Casper weather by month

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

Temperature in Casper (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
34°F maximum daytime temperature in January in Casper34
39°F maximum daytime temperature in February in Casper39
46°F maximum daytime temperature in March in Casper46
57°F maximum daytime temperature in April in Casper57
66°F maximum daytime temperature in May in Casper66
79°F maximum daytime temperature in June in Casper79
88°F maximum daytime temperature in July in Casper88
84°F maximum daytime temperature in August in Casper84
73°F maximum daytime temperature in September in Casper73
61°F maximum daytime temperature in October in Casper61
46°F maximum daytime temperature in November in Casper46
36°F maximum daytime temperature in December in Casper36
Min temperature (night-time)
12°F minimum night-time temperature in January in Casper12
16°F minimum night-time temperature in February in Casper16
21°F minimum night-time temperature in March in Casper21
30°F minimum night-time temperature in April in Casper30
37°F minimum night-time temperature in May in Casper37
46°F minimum night-time temperature in June in Casper46
54°F minimum night-time temperature in July in Casper54
50°F minimum night-time temperature in August in Casper50
41°F minimum night-time temperature in September in Casper41
32°F minimum night-time temperature in October in Casper32
23°F minimum night-time temperature in November in Casper23
14°F minimum night-time temperature in December in Casper14
Heat & Humidity
No heat & humidity in January in Casper0
No heat & humidity in February in Casper0
No heat & humidity in March in Casper0
No heat & humidity in April in Casper0
No heat & humidity in May in Casper0
Low heat & humidity in June in CasperL
Moderate heat & humidity in July in CasperM
Moderate heat & humidity in August in CasperM
No heat & humidity in September in Casper0
No heat & humidity in October in Casper0
No heat & humidity in November in Casper0
No heat & humidity in December in Casper0

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

Sunshine & Daylight in Casper

  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 Casper9
11 hours of daylight per day in February in Casper11
12 hours of daylight per day in March in Casper12
13 hours of daylight per day in April in Casper13
15 hours of daylight per day in May in Casper15
15 hours of daylight per day in June in Casper15
15 hours of daylight per day in July in Casper15
14 hours of daylight per day in August in Casper14
12 hours of daylight per day in September in Casper12
11 hours of daylight per day in October in Casper11
10 hours of daylight per day in November in Casper10
9 hours of daylight per day in December in Casper9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Casper2
UV (maximum) index 2 (Low) in February in Casper2
UV (maximum) index 4 (Moderate) in March in Casper4
UV (maximum) index 6 (High) in April in Casper6
UV (maximum) index 8 (Very High) in May in Casper8
UV (maximum) index 9 (Very High) in June in Casper9
UV (maximum) index 10 (Very High) in July in Casper10
UV (maximum) index 9 (Very High) in August in Casper9
UV (maximum) index 7 (High) in September in Casper7
UV (maximum) index 4 (Moderate) in October in Casper4
UV (maximum) index 2 (Low) in November in Casper2
UV (maximum) index 1 (Low) in December in Casper1

Rainfall in Casper

  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 Casper8
8 days with some rainfall in February in Casper8
9 days with some rainfall in March in Casper9
10 days with some rainfall in April in Casper10
11 days with some rainfall in May in Casper11
9 days with some rainfall in June in Casper9
9 days with some rainfall in July in Casper9
6 days with some rainfall in August in Casper6
7 days with some rainfall in September in Casper7
7 days with some rainfall in October in Casper7
7 days with some rainfall in November in Casper7
8 days with some rainfall in December in Casper8
Average monthly rainfall (inches)
0.5 inches monthly rainfall in January in Casper0.5
0.6 inches monthly rainfall in February in Casper0.6
0.9 inches monthly rainfall in March in Casper0.9
1.6 inches monthly rainfall in April in Casper1.6
2.2 inches monthly rainfall in May in Casper2.2
1.6 inches monthly rainfall in June in Casper1.6
1.3 inches monthly rainfall in July in Casper1.3
0.7 inches monthly rainfall in August in Casper0.7
0.9 inches monthly rainfall in September in Casper0.9
0.9 inches monthly rainfall in October in Casper0.9
0.7 inches monthly rainfall in November in Casper0.7
0.6 inches monthly rainfall in December in Casper0.6

More about Casper

Casper by month

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

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The climate guide for Wyoming (Casper) 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 Casper?

Casper has a cold semi arid climate with hot summers.

Metric (°C)  |  Imperial (°F)

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More about the USA

Compare Casper with the USA

Below the Casper chart shows average maximum daytime temperature for Casper, Wyoming, USA and the USA (Washington).

Maximum daytime temperature (°F)

Casper, Wyoming, USA
USA (Washington)
34
41
39
45
46
55
57
66
66
75
79
84
88
88
84
86
73
79
61
68
46
57
36
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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