Casper Weather Year-Round — Best Time to Visit
Casper, United States has cool weather year-round. The best time to visit is August (score: 94/100). Annual average high: 13.9°C, total rainfall: 374mm.
When is the best time to visit Casper?
94
August is the best month to visit Casper with a travel score of 94/100 (Excellent).
Expect highs of 29.7°C, 3 rain days, and 12.9 hours of daily sunshine.
View August weather details →Travel Score by Month
49
Jan
51
Feb
60
Mar
64
Apr
74
May
88
Jun
94
Jul
94
Aug
87
Sep
72
Oct
61
Nov
49
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Casper each month?
13.9°C
Avg High
1.4°C
Avg Low
374mm
Annual Rain
How much rain does Casper get?
Casper receives 374mm of rain annually. The wettest month is typically May with 64mm, while August is the driest.
What is the weather like each month in Casper?
January
49
-1°C
Low: -11°C
5 rain days
Mixed
February
51
0°C
Low: -11°C
6 rain days
Mixed
March
60
6°C
Low: -5°C
7 rain days
Good
April
64
12°C
Low: -1°C
10 rain days
Good
May
74
18°C
Low: 5°C
10 rain days
Good
June
88
26°C
Low: 11°C
6 rain days
Excellent
July
94
31°C
Low: 16°C
3 rain days
Excellent
August
Best time to visit94
30°C
Low: 15°C
3 rain days
Excellent
September
87
24°C
Low: 10°C
5 rain days
Excellent
October
72
14°C
Low: 2°C
6 rain days
Good
November
61
6°C
Low: -4°C
5 rain days
Good
December
49
0°C
Low: -10°C
5 rain days
Mixed
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What cities are near Casper?
Data based on 1994–2024 averages · Last updated: 2024-12-31