Wyoming weather by month
Average highs run from 31°F in January to 83°F in July, and January nights average 19°F. It gets 39 inches of rain and melted snow a year and 78 inches of snow. Nights drop below freezing about 133 times a year. The most comfortable months are May to September.
Best time to visit Wyoming
For comfortable weather, go in May to September. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 31°F | 19°F | 2.5 in | 22.6 in | 7 | 0 | 28 | very cold |
| February | 34°F | 20°F | 2.1 in | 17.2 in | 6 | 0 | 25 | very cold |
| March | 45°F | 27°F | 2.4 in | 7.6 in | 6 | 0 | 23 | cold |
| April | 58°F | 37°F | 4.0 in | 2.0 in | 8 | 0 | 10 | cool |
| May | 70°F | 49°F | 4.0 in | 0.0 in | 8 | 0 | 1 | mild |
| June | 79°F | 58°F | 3.9 in | 0.0 in | 6 | 3 | 0 | warm |
| July | 83°F | 63°F | 3.9 in | 0.0 in | 6 | 4 | 0 | warm |
| August | 81°F | 61°F | 3.6 in | 0.0 in | 6 | 2 | 0 | warm |
| September | 74°F | 53°F | 3.4 in | 0.0 in | 6 | 1 | 0 | mild |
| October | 61°F | 42°F | 4.0 in | 0.3 in | 8 | 0 | 4 | cool |
| November | 47°F | 33°F | 3.1 in | 7.1 in | 7 | 0 | 16 | cold |
| December | 36°F | 25°F | 2.5 in | 20.8 in | 7 | 0 | 26 | cold |
| Year | 58°F avg | 40°F avg | 39.4 in | 77.6 in | 81 | 10 | 133 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Grand Rapids, MI (USW00094860), 8.2 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Wyoming
The shortest day is December 21, with 9h 00m of daylight; the longest is June 21, with 15h 21m. The earliest sunset comes around December 2 (5:08 pm) and the latest around June 22 (9:25 pm). The sun sets after 8 pm on 170 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 8:11 am | 5:33 pm | 9h 23m |
| February | 7:40 am | 6:14 pm | 10h 34m |
| March | 7:54 am | 7:49 pm | 11h 54m |
| April | 7:01 am | 8:25 pm | 13h 24m |
| May | 6:20 am | 8:58 pm | 14h 39m |
| June | 6:03 am | 9:23 pm | 15h 20m |
| July | 6:17 am | 9:19 pm | 15h 01m |
| August | 6:49 am | 8:44 pm | 13h 55m |
| September | 7:22 am | 7:52 pm | 12h 29m |
| October | 7:56 am | 6:59 pm | 11h 03m |
| November | 7:35 am | 5:19 pm | 9h 44m |
| December | 8:07 am | 5:08 pm | 9h 02m |
Calculated for 2026 at the center of Wyoming with NOAA's solar equations, in local clock time (Eastern Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Wyoming getting warmer?
The last 10 years averaged 2.6°F warmer than the 20th century. See the climate stripes for Wyoming.Frequently asked questions
What is the warmest month in Wyoming?
July is the warmest month, with an average high of 83°F and an average low of 63°F (NOAA 1991-2020 normals).
What is the coldest month in Wyoming?
January is the coldest, with average lows of 19°F and highs of 31°F.
What is the rainiest month in Wyoming?
October gets the most precipitation, 4.0 inches on average. February is the driest at 2.1 inches.
Does it snow in Wyoming?
Yes. Wyoming averages 78 inches of snow a year.
When is the best time to visit Wyoming?
For comfortable weather, May to September. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Wyoming?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Wyoming profile.
Compare the weather: Wyoming vs Grand Rapids, Wyoming vs Lansing, Wyoming vs South Bend, Wyoming vs Flint.