Annual mean 13°C · wettest around March · prevailing wind SW
Warmest
28.9 °C
Coldest
1.2 °C
Wettest
42%
Windiest
5.1 m/s
Prevailing
SW
4.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Wyoming over the whole year is 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C. Wyoming has no sharply defined rainy season: the chance of rain on a given day runs from 29% in August, the driest month, to 38% in March, the wettest. Winds in Wyoming are highest in March, averaging 3.6 m/s (13 km/h), and lightest in August, at 2.0 m/s (7 km/h). The prevailing wind is from the SW. The clearest skies in Wyoming come in September, when the sky is typically 38% covered; January is the cloudiest month, at 67%.
Month by month Wyoming climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
2°C
-2°C
-3°C
37%
67%
3.4 m/s
1
0
11
February
6°C
0°C
1°C
37%
57%
3.5 m/s
5
0
22
March
11°C
4°C
6°C
38%
55%
3.6 m/s
15
0
40
April
16°C
8°C
12°C
37%
52%
3.4 m/s
38
4
60
May
22°C
14°C
20°C
36%
51%
2.8 m/s
59
26
53
June
27°C
19°C
27°C
33%
41%
2.5 m/s
55
51
25
July
28°C
21°C
30°C
32%
39%
2.2 m/s
28
65
6
August
28°C
20°C
29°C
29%
40%
2.0 m/s
38
61
12
September
25°C
16°C
25°C
29%
38%
2.0 m/s
58
46
34
October
19°C
10°C
16°C
32%
45%
2.4 m/s
50
14
64
November
11°C
3°C
6°C
34%
49%
2.8 m/s
14
1
44
December
5°C
1°C
1°C
34%
60%
3.1 m/s
2
0
21
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Wyoming weather by season
Year round, Wyoming has days of about 2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -2°C to 21°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around March and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Wyoming weather in winterDecember to February
High 4°CLow -0°CRain 36%
Winter in Wyoming has typical daily highs of about 4°C and lows of about -0°C, with a 36% chance of rain on a given day.
Wyoming weather in springMarch to May
High 16°CLow 9°CRain 37%
Spring in Wyoming has typical daily highs of about 16°C and lows of about 9°C, with a 37% chance of rain on a given day.
Wyoming weather in summerJune to August
High 28°CLow 20°CRain 31%
Summer in Wyoming has typical daily highs of about 28°C and lows of about 20°C, with a 31% chance of rain on a given day.
Wyoming weather in autumnSeptember to November
High 18°CLow 10°CRain 32%
Autumn in Wyoming has typical daily highs of about 18°C and lows of about 10°C, with a 32% chance of rain on a given day.
When is the rainy season in Wyoming?
Wyoming has no sharply defined rainy season: the chance of rain on a given day runs from 29% in August, the driest month, to 38% in March, the wettest.
What time of year is Wyoming windiest?
Winds in Wyoming are highest in March, averaging 3.6 m/s (13 km/h), and lightest in August, at 2.0 m/s (7 km/h). The prevailing wind is from the SW.
What is the average temperature in Wyoming year round?
The average temperature in Wyoming over the whole year is 13°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C.