Custer weather by month

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

Temperature in Custer (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
0°C maximum daytime temperature in January in Custer0
3°C maximum daytime temperature in February in Custer3
7°C maximum daytime temperature in March in Custer7
13°C maximum daytime temperature in April in Custer13
19°C maximum daytime temperature in May in Custer19
24°C maximum daytime temperature in June in Custer24
29°C maximum daytime temperature in July in Custer29
28°C maximum daytime temperature in August in Custer28
22°C maximum daytime temperature in September in Custer22
16°C maximum daytime temperature in October in Custer16
7°C maximum daytime temperature in November in Custer7
1°C maximum daytime temperature in December in Custer1
Min temperature (night-time)
-12°C minimum night-time temperature in January in Custer-12
-10°C minimum night-time temperature in February in Custer-10
-7°C minimum night-time temperature in March in Custer-7
-2°C minimum night-time temperature in April in Custer-2
4°C minimum night-time temperature in May in Custer4
9°C minimum night-time temperature in June in Custer9
13°C minimum night-time temperature in July in Custer13
11°C minimum night-time temperature in August in Custer11
6°C minimum night-time temperature in September in Custer6
0°C minimum night-time temperature in October in Custer0
-7°C minimum night-time temperature in November in Custer-7
-11°C minimum night-time temperature in December in Custer-11
Heat & Humidity
No heat & humidity in January in Custer0
No heat & humidity in February in Custer0
No heat & humidity in March in Custer0
No heat & humidity in April in Custer0
No heat & humidity in May in Custer0
No heat & humidity in June in Custer0
Low heat & humidity in July in CusterL
Low heat & humidity in August in CusterL
No heat & humidity in September in Custer0
No heat & humidity in October in Custer0
No heat & humidity in November in Custer0
No heat & humidity in December in Custer0

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

Sunshine & UV index in Custer

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Custer9
11 hours of daylight per day in February in Custer11
12 hours of daylight per day in March in Custer12
13 hours of daylight per day in April in Custer13
15 hours of daylight per day in May in Custer15
15 hours of daylight per day in June in Custer15
15 hours of daylight per day in July in Custer15
14 hours of daylight per day in August in Custer14
12 hours of daylight per day in September in Custer12
11 hours of daylight per day in October in Custer11
10 hours of daylight per day in November in Custer10
9 hours of daylight per day in December in Custer9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Custer1
UV (maximum) index 2 (Low) in February in Custer2
UV (maximum) index 4 (Moderate) in March in Custer4
UV (maximum) index 6 (High) in April in Custer6
UV (maximum) index 8 (Very High) in May in Custer8
UV (maximum) index 9 (Very High) in June in Custer9
UV (maximum) index 10 (Very High) in July in Custer10
UV (maximum) index 8 (Very High) in August in Custer8
UV (maximum) index 6 (High) in September in Custer6
UV (maximum) index 4 (Moderate) in October in Custer4
UV (maximum) index 2 (Low) in November in Custer2
UV (maximum) index 1 (Low) in December in Custer1

Rainfall in Custer

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
8 days with some rainfall in January in Custer8
8 days with some rainfall in February in Custer8
10 days with some rainfall in March in Custer10
10 days with some rainfall in April in Custer10
12 days with some rainfall in May in Custer12
12 days with some rainfall in June in Custer12
10 days with some rainfall in July in Custer10
9 days with some rainfall in August in Custer9
8 days with some rainfall in September in Custer8
6 days with some rainfall in October in Custer6
6 days with some rainfall in November in Custer6
8 days with some rainfall in December in Custer8
Average monthly rainfall (mm)
10 mm monthly rainfall in January in Custer10
14 mm monthly rainfall in February in Custer14
23 mm monthly rainfall in March in Custer23
45 mm monthly rainfall in April in Custer45
76 mm monthly rainfall in May in Custer76
75 mm monthly rainfall in June in Custer75
59 mm monthly rainfall in July in Custer59
42 mm monthly rainfall in August in Custer42
32 mm monthly rainfall in September in Custer32
24 mm monthly rainfall in October in Custer24
14 mm monthly rainfall in November in Custer14
12 mm monthly rainfall in December in Custer12

More about Custer

Custer 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 South Dakota (Custer) 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 Custer?

Custer has a cold climate with warm summers and some rainfall in all months.

Custer weather in January

Expect daytime maximum temperatures of 0°C in Custer, South Dakota in January based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

  • 0°C maximum daytime temperature in January in Custer0
    0°C max day temperature
  • 6 hours of sunshine per day
  • 8 days with some rainfall in January in Custer8
    8 days with some rainfall
  • -12°C minimum night-time temperature in January in Custer-12
    -12°C min night temperature
  • 9 hours of daylight per day in January in Custer9
    9 hours of daylight per day
  • No heat & humidity in January in Custer0
    No heat & humidity
  • 10 mm monthly rainfall in January in Custer10
    10 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Custer1
    1 (Low) UV index

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Custer weather in February

Expect daytime maximum temperatures of 3°C in Custer, South Dakota in February based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

  • 3°C maximum daytime temperature in February in Custer3
    3°C max day temperature
  • 6 hours of sunshine per day
  • 8 days with some rainfall in February in Custer8
    8 days with some rainfall
  • -10°C minimum night-time temperature in February in Custer-10
    -10°C min night temperature
  • 11 hours of daylight per day in February in Custer11
    11 hours of daylight per day
  • No heat & humidity in February in Custer0
    No heat & humidity
  • 14 mm monthly rainfall in February in Custer14
    14 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in February in Custer2
    2 (Low) UV index

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Custer weather in March

Expect daytime maximum temperatures of 7°C in Custer, South Dakota in March based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall, which might fall as snow.

  • 7°C maximum daytime temperature in March in Custer7
    7°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in March in Custer10
    10 days with some rainfall
  • -7°C minimum night-time temperature in March in Custer-7
    -7°C min night temperature
  • 12 hours of daylight per day in March in Custer12
    12 hours of daylight per day
  • No heat & humidity in March in Custer0
    No heat & humidity
  • 23 mm monthly rainfall in March in Custer23
    23 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in Custer4
    4 (Moderate) UV index

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Custer weather in April

Expect daytime maximum temperatures of 13°C in Custer, South Dakota 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 45 mm of rainfall in the month.

  • 13°C maximum daytime temperature in April in Custer13
    13°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Custer10
    10 days with some rainfall
  • -2°C minimum night-time temperature in April in Custer-2
    -2°C min night temperature
  • 13 hours of daylight per day in April in Custer13
    13 hours of daylight per day
  • No heat & humidity in April in Custer0
    No heat & humidity
  • 45 mm monthly rainfall in April in Custer45
    45 mm of monthly rainfall
  • UV (maximum) index 6 (High) in April in Custer6
    6 (High) UV index

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Custer weather in May

Expect daytime maximum temperatures of 19°C in Custer, South Dakota in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 76 mm of rainfall in the month.

  • 19°C maximum daytime temperature in May in Custer19
    19°C max day temperature
  • 9 hours of sunshine per day
  • 12 days with some rainfall in May in Custer12
    12 days with some rainfall
  • 4°C minimum night-time temperature in May in Custer4
    4°C min night temperature
  • 15 hours of daylight per day in May in Custer15
    15 hours of daylight per day
  • No heat & humidity in May in Custer0
    No heat & humidity
  • 76 mm monthly rainfall in May in Custer76
    76 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Custer8
    8 (Very High) UV index

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Custer weather in June

Expect daytime maximum temperatures of 24°C in Custer, South Dakota in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 12 days with some rainfall and typically 75 mm of rainfall in the month.

  • 24°C maximum daytime temperature in June in Custer24
    24°C max day temperature
  • 10 hours of sunshine per day
  • 12 days with some rainfall in June in Custer12
    12 days with some rainfall
  • 9°C minimum night-time temperature in June in Custer9
    9°C min night temperature
  • 15 hours of daylight per day in June in Custer15
    15 hours of daylight per day
  • No heat & humidity in June in Custer0
    No heat & humidity
  • 75 mm monthly rainfall in June in Custer75
    75 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Custer9
    9 (Very High) UV index

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Custer weather in July

Expect daytime maximum temperatures of 29°C in Custer, South Dakota in July based on long-term weather averages. There are 11 hours of sunshine per day on average with 10 days with some rainfall and typically 59 mm of rainfall in the month.

  • 29°C maximum daytime temperature in July in Custer29
    29°C max day temperature
  • 11 hours of sunshine per day
  • 10 days with some rainfall in July in Custer10
    10 days with some rainfall
  • 13°C minimum night-time temperature in July in Custer13
    13°C min night temperature
  • 15 hours of daylight per day in July in Custer15
    15 hours of daylight per day
  • Low heat & humidity in July in CusterL
    Low heat & humidity
  • 59 mm monthly rainfall in July in Custer59
    59 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Custer10
    10 (Very High) UV index

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Custer weather in August

Expect daytime maximum temperatures of 28°C in Custer, South Dakota in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 42 mm of rainfall in the month.

  • 28°C maximum daytime temperature in August in Custer28
    28°C max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in August in Custer9
    9 days with some rainfall
  • 11°C minimum night-time temperature in August in Custer11
    11°C min night temperature
  • 14 hours of daylight per day in August in Custer14
    14 hours of daylight per day
  • Low heat & humidity in August in CusterL
    Low heat & humidity
  • 42 mm monthly rainfall in August in Custer42
    42 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Custer8
    8 (Very High) UV index

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Custer weather in September

Expect daytime maximum temperatures of 22°C in Custer, South Dakota in September based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 22°C maximum daytime temperature in September in Custer22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Custer8
    8 days with some rainfall
  • 6°C minimum night-time temperature in September in Custer6
    6°C min night temperature
  • 12 hours of daylight per day in September in Custer12
    12 hours of daylight per day
  • No heat & humidity in September in Custer0
    No heat & humidity
  • 32 mm monthly rainfall in September in Custer32
    32 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Custer6
    6 (High) UV index

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Custer weather in October

Expect daytime maximum temperatures of 16°C in Custer, South Dakota in October based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 16°C maximum daytime temperature in October in Custer16
    16°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in October in Custer6
    6 days with some rainfall
  • 0°C minimum night-time temperature in October in Custer0
    0°C min night temperature
  • 11 hours of daylight per day in October in Custer11
    11 hours of daylight per day
  • No heat & humidity in October in Custer0
    No heat & humidity
  • 24 mm monthly rainfall in October in Custer24
    24 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Custer4
    4 (Moderate) UV index

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Custer weather in November

Expect daytime maximum temperatures of 7°C in Custer, South Dakota in November based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

  • 7°C maximum daytime temperature in November in Custer7
    7°C max day temperature
  • 5 hours of sunshine per day
  • 6 days with some rainfall in November in Custer6
    6 days with some rainfall
  • -7°C minimum night-time temperature in November in Custer-7
    -7°C min night temperature
  • 10 hours of daylight per day in November in Custer10
    10 hours of daylight per day
  • No heat & humidity in November in Custer0
    No heat & humidity
  • 14 mm monthly rainfall in November in Custer14
    14 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in November in Custer2
    2 (Low) UV index

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Custer weather in December

Expect daytime maximum temperatures of 1°C in Custer, South Dakota in December based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

  • 1°C maximum daytime temperature in December in Custer1
    1°C max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in December in Custer8
    8 days with some rainfall
  • -11°C minimum night-time temperature in December in Custer-11
    -11°C min night temperature
  • 9 hours of daylight per day in December in Custer9
    9 hours of daylight per day
  • No heat & humidity in December in Custer0
    No heat & humidity
  • 12 mm monthly rainfall in December in Custer12
    12 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Custer1
    1 (Low) UV index

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More about Custer

Custer by month

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

Recommended for South Dakota

  • 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 South Dakota (Custer) 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.

Compare Custer weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Custer, South Dakota, USA and the UK (London).

Maximum daytime temperature (°C)

Custer, South Dakota, 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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