Fort Smith weather by month

Check out Fort Smith weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Fort Smith (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
9°C maximum daytime temperature in January in Fort Smith9
12°C maximum daytime temperature in February in Fort Smith12
17°C maximum daytime temperature in March in Fort Smith17
23°C maximum daytime temperature in April in Fort Smith23
27°C maximum daytime temperature in May in Fort Smith27
31°C maximum daytime temperature in June in Fort Smith31
34°C maximum daytime temperature in July in Fort Smith34
34°C maximum daytime temperature in August in Fort Smith34
29°C maximum daytime temperature in September in Fort Smith29
24°C maximum daytime temperature in October in Fort Smith24
17°C maximum daytime temperature in November in Fort Smith17
11°C maximum daytime temperature in December in Fort Smith11
Min temperature (night-time)
-4°C minimum night-time temperature in January in Fort Smith-4
-1°C minimum night-time temperature in February in Fort Smith-1
4°C minimum night-time temperature in March in Fort Smith4
9°C minimum night-time temperature in April in Fort Smith9
14°C minimum night-time temperature in May in Fort Smith14
19°C minimum night-time temperature in June in Fort Smith19
21°C minimum night-time temperature in July in Fort Smith21
20°C minimum night-time temperature in August in Fort Smith20
16°C minimum night-time temperature in September in Fort Smith16
9°C minimum night-time temperature in October in Fort Smith9
3°C minimum night-time temperature in November in Fort Smith3
-2°C minimum night-time temperature in December in Fort Smith-2
Heat & Humidity
No heat & humidity in January in Fort Smith0
No heat & humidity in February in Fort Smith0
No heat & humidity in March in Fort Smith0
No heat & humidity in April in Fort Smith0
Low heat & humidity in May in Fort SmithL
High heat & humidity in June in Fort SmithH
Very high heat & humidity in July in Fort SmithVH
Very high heat & humidity in August in Fort SmithVH
Moderate heat & humidity in September in Fort SmithM
No heat & humidity in October in Fort Smith0
No heat & humidity in November in Fort Smith0
No heat & humidity in December in Fort Smith0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Fort Smith

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Fort Smith10
11 hours of daylight per day in February in Fort Smith11
12 hours of daylight per day in March in Fort Smith12
13 hours of daylight per day in April in Fort Smith13
14 hours of daylight per day in May in Fort Smith14
15 hours of daylight per day in June in Fort Smith15
14 hours of daylight per day in July in Fort Smith14
13 hours of daylight per day in August in Fort Smith13
12 hours of daylight per day in September in Fort Smith12
11 hours of daylight per day in October in Fort Smith11
10 hours of daylight per day in November in Fort Smith10
10 hours of daylight per day in December in Fort Smith10
UV Index (Maximum)
UV (maximum) index 3 (Moderate) in January in Fort Smith3
UV (maximum) index 4 (Moderate) in February in Fort Smith4
UV (maximum) index 6 (High) in March in Fort Smith6
UV (maximum) index 8 (Very High) in April in Fort Smith8
UV (maximum) index 9 (Very High) in May in Fort Smith9
UV (maximum) index 10 (Very High) in June in Fort Smith10
UV (maximum) index 10 (Very High) in July in Fort Smith10
UV (maximum) index 9 (Very High) in August in Fort Smith9
UV (maximum) index 8 (Very High) in September in Fort Smith8
UV (maximum) index 5 (Moderate) in October in Fort Smith5
UV (maximum) index 3 (Moderate) in November in Fort Smith3
UV (maximum) index 2 (Low) in December in Fort Smith2

Rainfall in Fort Smith

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
7 days with some rainfall in January in Fort Smith7
7 days with some rainfall in February in Fort Smith7
10 days with some rainfall in March in Fort Smith10
10 days with some rainfall in April in Fort Smith10
11 days with some rainfall in May in Fort Smith11
8 days with some rainfall in June in Fort Smith8
7 days with some rainfall in July in Fort Smith7
7 days with some rainfall in August in Fort Smith7
8 days with some rainfall in September in Fort Smith8
7 days with some rainfall in October in Fort Smith7
7 days with some rainfall in November in Fort Smith7
8 days with some rainfall in December in Fort Smith8
Average monthly rainfall (mm)
57 mm monthly rainfall in January in Fort Smith57
71 mm monthly rainfall in February in Fort Smith71
105 mm monthly rainfall in March in Fort Smith105
111 mm monthly rainfall in April in Fort Smith111
147 mm monthly rainfall in May in Fort Smith147
98 mm monthly rainfall in June in Fort Smith98
88 mm monthly rainfall in July in Fort Smith88
80 mm monthly rainfall in August in Fort Smith80
107 mm monthly rainfall in September in Fort Smith107
93 mm monthly rainfall in October in Fort Smith93
100 mm monthly rainfall in November in Fort Smith100
82 mm monthly rainfall in December in Fort Smith82

More about Fort Smith

Fort Smith by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Arkansas (Fort Smith) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Fort Smith?

Fort Smith has a temperate climate with hot summers and some rainfall in all months.

Fort Smith weather in January

Expect daytime maximum temperatures of 9°C in Fort Smith, Arkansas in January based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 57 mm of rainfall in the month.

  • 9°C maximum daytime temperature in January in Fort Smith9
    9°C max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in January in Fort Smith7
    7 days with some rainfall
  • -4°C minimum night-time temperature in January in Fort Smith-4
    -4°C min night temperature
  • 10 hours of daylight per day in January in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in January in Fort Smith0
    No heat & humidity
  • 57 mm monthly rainfall in January in Fort Smith57
    57 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in Fort Smith3
    3 (Moderate) UV index

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Fort Smith weather in February

Expect daytime maximum temperatures of 12°C in Fort Smith, Arkansas in February based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 71 mm of rainfall in the month.

  • 12°C maximum daytime temperature in February in Fort Smith12
    12°C max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in February in Fort Smith7
    7 days with some rainfall
  • -1°C minimum night-time temperature in February in Fort Smith-1
    -1°C min night temperature
  • 11 hours of daylight per day in February in Fort Smith11
    11 hours of daylight per day
  • No heat & humidity in February in Fort Smith0
    No heat & humidity
  • 71 mm monthly rainfall in February in Fort Smith71
    71 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in February in Fort Smith4
    4 (Moderate) UV index

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Fort Smith weather in March

Expect daytime maximum temperatures of 17°C in Fort Smith, Arkansas in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 105 mm of rainfall in the month.

  • 17°C maximum daytime temperature in March in Fort Smith17
    17°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in March in Fort Smith10
    10 days with some rainfall
  • 4°C minimum night-time temperature in March in Fort Smith4
    4°C min night temperature
  • 12 hours of daylight per day in March in Fort Smith12
    12 hours of daylight per day
  • No heat & humidity in March in Fort Smith0
    No heat & humidity
  • 105 mm monthly rainfall in March in Fort Smith105
    105 mm of monthly rainfall
  • UV (maximum) index 6 (High) in March in Fort Smith6
    6 (High) UV index

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Fort Smith weather in April

Expect daytime maximum temperatures of 23°C in Fort Smith, Arkansas in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 111 mm of rainfall in the month.

  • 23°C maximum daytime temperature in April in Fort Smith23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Fort Smith10
    10 days with some rainfall
  • 9°C minimum night-time temperature in April in Fort Smith9
    9°C min night temperature
  • 13 hours of daylight per day in April in Fort Smith13
    13 hours of daylight per day
  • No heat & humidity in April in Fort Smith0
    No heat & humidity
  • 111 mm monthly rainfall in April in Fort Smith111
    111 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in April in Fort Smith8
    8 (Very High) UV index

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Fort Smith weather in May

Expect daytime maximum temperatures of 27°C in Fort Smith, Arkansas in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 147 mm of rainfall in the month.

  • 27°C maximum daytime temperature in May in Fort Smith27
    27°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Fort Smith11
    11 days with some rainfall
  • 14°C minimum night-time temperature in May in Fort Smith14
    14°C min night temperature
  • 14 hours of daylight per day in May in Fort Smith14
    14 hours of daylight per day
  • Low heat & humidity in May in Fort SmithL
    Low heat & humidity
  • 147 mm monthly rainfall in May in Fort Smith147
    147 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Fort Smith9
    9 (Very High) UV index

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Fort Smith weather in June

Expect daytime maximum temperatures of 31°C in Fort Smith, Arkansas in June and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 98 mm of rainfall in the month.

  • 31°C maximum daytime temperature in June in Fort Smith31
    31°C max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in June in Fort Smith8
    8 days with some rainfall
  • 19°C minimum night-time temperature in June in Fort Smith19
    19°C min night temperature
  • 15 hours of daylight per day in June in Fort Smith15
    15 hours of daylight per day
  • High heat & humidity in June in Fort SmithH
    High heat & humidity
  • 98 mm monthly rainfall in June in Fort Smith98
    98 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in June in Fort Smith10
    10 (Very High) UV index

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Fort Smith weather in July

Expect daytime maximum temperatures of 34°C in Fort Smith, Arkansas in July and very high heat and humidity based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 88 mm of rainfall in the month.

  • 34°C maximum daytime temperature in July in Fort Smith34
    34°C max day temperature
  • 11 hours of sunshine per day
  • 7 days with some rainfall in July in Fort Smith7
    7 days with some rainfall
  • 21°C minimum night-time temperature in July in Fort Smith21
    21°C min night temperature
  • 14 hours of daylight per day in July in Fort Smith14
    14 hours of daylight per day
  • Very high heat & humidity in July in Fort SmithVH
    Very High heat & humidity
  • 88 mm monthly rainfall in July in Fort Smith88
    88 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Fort Smith10
    10 (Very High) UV index

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Fort Smith weather in August

Expect daytime maximum temperatures of 34°C in Fort Smith, Arkansas in August and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 80 mm of rainfall in the month.

  • 34°C maximum daytime temperature in August in Fort Smith34
    34°C max day temperature
  • 10 hours of sunshine per day
  • 7 days with some rainfall in August in Fort Smith7
    7 days with some rainfall
  • 20°C minimum night-time temperature in August in Fort Smith20
    20°C min night temperature
  • 13 hours of daylight per day in August in Fort Smith13
    13 hours of daylight per day
  • Very high heat & humidity in August in Fort SmithVH
    Very High heat & humidity
  • 80 mm monthly rainfall in August in Fort Smith80
    80 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Fort Smith9
    9 (Very High) UV index

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Fort Smith weather in September

Expect daytime maximum temperatures of 29°C in Fort Smith, Arkansas in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 107 mm of rainfall in the month.

  • 29°C maximum daytime temperature in September in Fort Smith29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Fort Smith8
    8 days with some rainfall
  • 16°C minimum night-time temperature in September in Fort Smith16
    16°C min night temperature
  • 12 hours of daylight per day in September in Fort Smith12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Fort SmithM
    Moderate heat & humidity
  • 107 mm monthly rainfall in September in Fort Smith107
    107 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Fort Smith8
    8 (Very High) UV index

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Fort Smith weather in October

Expect daytime maximum temperatures of 24°C in Fort Smith, Arkansas in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 93 mm of rainfall in the month.

  • 24°C maximum daytime temperature in October in Fort Smith24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in October in Fort Smith7
    7 days with some rainfall
  • 9°C minimum night-time temperature in October in Fort Smith9
    9°C min night temperature
  • 11 hours of daylight per day in October in Fort Smith11
    11 hours of daylight per day
  • No heat & humidity in October in Fort Smith0
    No heat & humidity
  • 93 mm monthly rainfall in October in Fort Smith93
    93 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Fort Smith5
    5 (Moderate) UV index

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Fort Smith weather in November

Expect daytime maximum temperatures of 17°C in Fort Smith, Arkansas in November based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 100 mm of rainfall in the month.

  • 17°C maximum daytime temperature in November in Fort Smith17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in November in Fort Smith7
    7 days with some rainfall
  • 3°C minimum night-time temperature in November in Fort Smith3
    3°C min night temperature
  • 10 hours of daylight per day in November in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in November in Fort Smith0
    No heat & humidity
  • 100 mm monthly rainfall in November in Fort Smith100
    100 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in November in Fort Smith3
    3 (Moderate) UV index

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Fort Smith weather in December

Expect daytime maximum temperatures of 11°C in Fort Smith, Arkansas in December based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 82 mm of rainfall in the month.

  • 11°C maximum daytime temperature in December in Fort Smith11
    11°C max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in December in Fort Smith8
    8 days with some rainfall
  • -2°C minimum night-time temperature in December in Fort Smith-2
    -2°C min night temperature
  • 10 hours of daylight per day in December in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in December in Fort Smith0
    No heat & humidity
  • 82 mm monthly rainfall in December in Fort Smith82
    82 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Fort Smith2
    2 (Low) UV index

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More about Fort Smith

Fort Smith by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Arkansas

  • Save EXTRA 5% on airport transfers worldwide
  • Book private taxis & shuttle buses with discount code
  • Enter in coupon box on 'Reservations' page
Show discount codeShow discount code ******WEB

Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Arkansas (Fort Smith) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Tropical storm risk: Fort Smith, Arkansas hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
<1%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare Fort Smith weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Fort Smith, Arkansas, USA and the UK (London).

Maximum daytime temperature (°C)

Fort Smith, Arkansas, USA
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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