Missoula weather by month

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

Temperature in Missoula (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
30°F maximum daytime temperature in January in Missoula30
37°F maximum daytime temperature in February in Missoula37
46°F maximum daytime temperature in March in Missoula46
57°F maximum daytime temperature in April in Missoula57
64°F maximum daytime temperature in May in Missoula64
73°F maximum daytime temperature in June in Missoula73
82°F maximum daytime temperature in July in Missoula82
82°F maximum daytime temperature in August in Missoula82
70°F maximum daytime temperature in September in Missoula70
57°F maximum daytime temperature in October in Missoula57
41°F maximum daytime temperature in November in Missoula41
30°F maximum daytime temperature in December in Missoula30
Min temperature (night-time)
16°F minimum night-time temperature in January in Missoula16
21°F minimum night-time temperature in February in Missoula21
25°F minimum night-time temperature in March in Missoula25
30°F minimum night-time temperature in April in Missoula30
37°F minimum night-time temperature in May in Missoula37
46°F minimum night-time temperature in June in Missoula46
50°F minimum night-time temperature in July in Missoula50
48°F minimum night-time temperature in August in Missoula48
39°F minimum night-time temperature in September in Missoula39
30°F minimum night-time temperature in October in Missoula30
23°F minimum night-time temperature in November in Missoula23
16°F minimum night-time temperature in December in Missoula16
Heat & Humidity
No heat & humidity in January in Missoula0
No heat & humidity in February in Missoula0
No heat & humidity in March in Missoula0
No heat & humidity in April in Missoula0
No heat & humidity in May in Missoula0
No heat & humidity in June in Missoula0
Low heat & humidity in July in MissoulaL
Low heat & humidity in August in MissoulaL
No heat & humidity in September in Missoula0
No heat & humidity in October in Missoula0
No heat & humidity in November in Missoula0
No heat & humidity in December in Missoula0

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

Sunshine & Daylight in Missoula

  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 Missoula9
10 hours of daylight per day in February in Missoula10
12 hours of daylight per day in March in Missoula12
14 hours of daylight per day in April in Missoula14
15 hours of daylight per day in May in Missoula15
16 hours of daylight per day in June in Missoula16
15 hours of daylight per day in July in Missoula15
14 hours of daylight per day in August in Missoula14
13 hours of daylight per day in September in Missoula13
11 hours of daylight per day in October in Missoula11
9 hours of daylight per day in November in Missoula9
9 hours of daylight per day in December in Missoula9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Missoula1
UV (maximum) index 2 (Low) in February in Missoula2
UV (maximum) index 3 (Moderate) in March in Missoula3
UV (maximum) index 5 (Moderate) in April in Missoula5
UV (maximum) index 7 (High) in May in Missoula7
UV (maximum) index 8 (Very High) in June in Missoula8
UV (maximum) index 8 (Very High) in July in Missoula8
UV (maximum) index 7 (High) in August in Missoula7
UV (maximum) index 5 (Moderate) in September in Missoula5
UV (maximum) index 3 (Moderate) in October in Missoula3
UV (maximum) index 1 (Low) in November in Missoula1
UV (maximum) index 1 (Low) in December in Missoula1

Rainfall in Missoula

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
14 days with some rainfall in January in Missoula14
11 days with some rainfall in February in Missoula11
12 days with some rainfall in March in Missoula12
11 days with some rainfall in April in Missoula11
12 days with some rainfall in May in Missoula12
11 days with some rainfall in June in Missoula11
7 days with some rainfall in July in Missoula7
8 days with some rainfall in August in Missoula8
8 days with some rainfall in September in Missoula8
8 days with some rainfall in October in Missoula8
11 days with some rainfall in November in Missoula11
13 days with some rainfall in December in Missoula13
Average monthly rainfall (inches)
1.3 inches monthly rainfall in January in Missoula1.3
0.8 inches monthly rainfall in February in Missoula0.8
1.0 inches monthly rainfall in March in Missoula1.0
1.0 inches monthly rainfall in April in Missoula1.0
1.9 inches monthly rainfall in May in Missoula1.9
1.9 inches monthly rainfall in June in Missoula1.9
0.9 inches monthly rainfall in July in Missoula0.9
1.2 inches monthly rainfall in August in Missoula1.2
1.2 inches monthly rainfall in September in Missoula1.2
0.8 inches monthly rainfall in October in Missoula0.8
0.9 inches monthly rainfall in November in Missoula0.9
1.1 inches monthly rainfall in December in Missoula1.1

More about Missoula

Missoula by month

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

Recommended for Montana

  • Explore best prices on Cosmos tours worldwide
  • Find deals on tour holidays in 2025/2026
  • Filter by price, destination, duration & more

The climate guide for Montana (Missoula) 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 Missoula?

Missoula has a cold semi arid climate with warm summers.

Missoula weather in January

Expect daytime maximum temperatures of 30°F in Missoula, Montana in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 14 days with some rainfall, which might fall as snow.

  • 30°F maximum daytime temperature in January in Missoula30
    30°F max day temperature
  • 3 hours of sunshine per day
  • 14 days with some rainfall in January in Missoula14
    14 days with some rainfall
  • 16°F minimum night-time temperature in January in Missoula16
    16°F min night temperature
  • 9 hours of daylight per day in January in Missoula9
    9 hours of daylight per day
  • No heat & humidity in January in Missoula0
    No heat & humidity
  • 1.3 inches monthly rainfall in January in Missoula1.3
    1.3 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Missoula1
    1 (Low) UV index

Back to months

Missoula weather in February

Expect daytime maximum temperatures of 37°F in Missoula, Montana in February based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

  • 37°F maximum daytime temperature in February in Missoula37
    37°F max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in February in Missoula11
    11 days with some rainfall
  • 21°F minimum night-time temperature in February in Missoula21
    21°F min night temperature
  • 10 hours of daylight per day in February in Missoula10
    10 hours of daylight per day
  • No heat & humidity in February in Missoula0
    No heat & humidity
  • 0.8 inches monthly rainfall in February in Missoula0.8
    0.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in February in Missoula2
    2 (Low) UV index

Back to months

Missoula weather in March

Expect daytime maximum temperatures of 46°F in Missoula, Montana in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall.

  • 46°F maximum daytime temperature in March in Missoula46
    46°F max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in March in Missoula12
    12 days with some rainfall
  • 25°F minimum night-time temperature in March in Missoula25
    25°F min night temperature
  • 12 hours of daylight per day in March in Missoula12
    12 hours of daylight per day
  • No heat & humidity in March in Missoula0
    No heat & humidity
  • 1.0 inches monthly rainfall in March in Missoula1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in March in Missoula3
    3 (Moderate) UV index

Back to months

Missoula weather in April

Expect daytime maximum temperatures of 57°F in Missoula, Montana in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall.

  • 57°F maximum daytime temperature in April in Missoula57
    57°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in April in Missoula11
    11 days with some rainfall
  • 30°F minimum night-time temperature in April in Missoula30
    30°F min night temperature
  • 14 hours of daylight per day in April in Missoula14
    14 hours of daylight per day
  • No heat & humidity in April in Missoula0
    No heat & humidity
  • 1.0 inches monthly rainfall in April in Missoula1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in April in Missoula5
    5 (Moderate) UV index

Back to months

Missoula weather in May

Expect daytime maximum temperatures of 64°F in Missoula, Montana 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 1.9 inches of rainfall in the month.

  • 64°F maximum daytime temperature in May in Missoula64
    64°F max day temperature
  • 9 hours of sunshine per day
  • 12 days with some rainfall in May in Missoula12
    12 days with some rainfall
  • 37°F minimum night-time temperature in May in Missoula37
    37°F min night temperature
  • 15 hours of daylight per day in May in Missoula15
    15 hours of daylight per day
  • No heat & humidity in May in Missoula0
    No heat & humidity
  • 1.9 inches monthly rainfall in May in Missoula1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 7 (High) in May in Missoula7
    7 (High) UV index

Back to months

Missoula weather in June

Expect daytime maximum temperatures of 73°F in Missoula, Montana in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 1.9 inches of rainfall in the month.

  • 73°F maximum daytime temperature in June in Missoula73
    73°F max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in June in Missoula11
    11 days with some rainfall
  • 46°F minimum night-time temperature in June in Missoula46
    46°F min night temperature
  • 16 hours of daylight per day in June in Missoula16
    16 hours of daylight per day
  • No heat & humidity in June in Missoula0
    No heat & humidity
  • 1.9 inches monthly rainfall in June in Missoula1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in June in Missoula8
    8 (Very High) UV index

Back to months

Missoula weather in July

Expect daytime maximum temperatures of 82°F in Missoula, Montana in July based on long-term weather averages. There are 13 hours of sunshine per day on average.

  • 82°F maximum daytime temperature in July in Missoula82
    82°F max day temperature
  • 13 hours of sunshine per day
  • 7 days with some rainfall in July in Missoula7
    7 days with some rainfall
  • 50°F minimum night-time temperature in July in Missoula50
    50°F min night temperature
  • 15 hours of daylight per day in July in Missoula15
    15 hours of daylight per day
  • Low heat & humidity in July in MissoulaL
    Low heat & humidity
  • 0.9 inches monthly rainfall in July in Missoula0.9
    0.9 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in July in Missoula8
    8 (Very High) UV index

Back to months

Missoula weather in August

Expect daytime maximum temperatures of 82°F in Missoula, Montana in August based on long-term weather averages. There are 11 hours of sunshine per day on average.

  • 82°F maximum daytime temperature in August in Missoula82
    82°F max day temperature
  • 11 hours of sunshine per day
  • 8 days with some rainfall in August in Missoula8
    8 days with some rainfall
  • 48°F minimum night-time temperature in August in Missoula48
    48°F min night temperature
  • 14 hours of daylight per day in August in Missoula14
    14 hours of daylight per day
  • Low heat & humidity in August in MissoulaL
    Low heat & humidity
  • 1.2 inches monthly rainfall in August in Missoula1.2
    1.2 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Missoula7
    7 (High) UV index

Back to months

Missoula weather in September

Expect daytime maximum temperatures of 70°F in Missoula, Montana in September based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 70°F maximum daytime temperature in September in Missoula70
    70°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Missoula8
    8 days with some rainfall
  • 39°F minimum night-time temperature in September in Missoula39
    39°F min night temperature
  • 13 hours of daylight per day in September in Missoula13
    13 hours of daylight per day
  • No heat & humidity in September in Missoula0
    No heat & humidity
  • 1.2 inches monthly rainfall in September in Missoula1.2
    1.2 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Missoula5
    5 (Moderate) UV index

Back to months

Missoula weather in October

Expect daytime maximum temperatures of 57°F in Missoula, Montana in October based on long-term weather averages. There are 6 hours of sunshine per day on average.

  • 57°F maximum daytime temperature in October in Missoula57
    57°F max day temperature
  • 6 hours of sunshine per day
  • 8 days with some rainfall in October in Missoula8
    8 days with some rainfall
  • 30°F minimum night-time temperature in October in Missoula30
    30°F min night temperature
  • 11 hours of daylight per day in October in Missoula11
    11 hours of daylight per day
  • No heat & humidity in October in Missoula0
    No heat & humidity
  • 0.8 inches monthly rainfall in October in Missoula0.8
    0.8 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Missoula3
    3 (Moderate) UV index

Back to months

Missoula weather in November

Expect daytime maximum temperatures of 41°F in Missoula, Montana in November based on long-term weather averages. There are 3 hours of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

  • 41°F maximum daytime temperature in November in Missoula41
    41°F max day temperature
  • 3 hours of sunshine per day
  • 11 days with some rainfall in November in Missoula11
    11 days with some rainfall
  • 23°F minimum night-time temperature in November in Missoula23
    23°F min night temperature
  • 9 hours of daylight per day in November in Missoula9
    9 hours of daylight per day
  • No heat & humidity in November in Missoula0
    No heat & humidity
  • 0.9 inches monthly rainfall in November in Missoula0.9
    0.9 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Missoula1
    1 (Low) UV index

Back to months

Missoula weather in December

Expect daytime maximum temperatures of 30°F in Missoula, Montana in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 13 days with some rainfall, which might fall as snow.

  • 30°F maximum daytime temperature in December in Missoula30
    30°F max day temperature
  • 3 hours of sunshine per day
  • 13 days with some rainfall in December in Missoula13
    13 days with some rainfall
  • 16°F minimum night-time temperature in December in Missoula16
    16°F min night temperature
  • 9 hours of daylight per day in December in Missoula9
    9 hours of daylight per day
  • No heat & humidity in December in Missoula0
    No heat & humidity
  • 1.1 inches monthly rainfall in December in Missoula1.1
    1.1 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Missoula1
    1 (Low) UV index

Back to months

More about Missoula

Missoula by month

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

Recommended for Montana

  • Save up to £900 per couple on 2026 tours worldwide
  • Discount varies by destination. T&Cs apply
  • Travel between 1st Jan & 31st Dec 2026 (inclusive)

Expires at 23:59 on Tuesday 30th Sep 2025 · View all Cosmos offers

CosmosTour deal finder

The climate guide for Montana (Missoula) 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.

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

Compare Missoula with the UK

Below the Missoula chart shows average maximum daytime temperature for Missoula, Montana, USA and the UK (London).

Maximum daytime temperature (°F)

Missoula, Montana, USA
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

Compare more Missoula weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^