Atlantic, WY climate
Atlantic has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 77°, a January night drops to 11°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Atlantic feels like
Winter
Spring
Summer
Fall
Atlantic weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 30° | 11° | 1.0" | 13° – 27° |
| February | 31° | 11° | 1.0" | 16° – 28° |
| March | 39° | 17° | 1.2" | 22° – 34° |
| April | 47° | 24° | 1.5" | 30° – 42° |
| May | 57° | 33° | 2.2" | 39° – 49° |
| June | 68° | 41° | 1.3" | 47° – 60° |
| July | 77° | 48° | 0.9" | 55° – 67° |
| August | 75° | 47° | 0.7" | 57° – 65° |
| September | 65° | 39° | 1.2" | 48° – 56° |
| October | 51° | 28° | 1.4" | 31° – 46° |
| November | 37° | 17° | 0.9" | 17° – 36° |
| December | 29° | 10° | 1.0" | 13° – 23° |
| Year | 50° | 27° | 14.5" |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Atlantic
Atlantic gets 14 inches of rain and melted snow a year. May is the wettest month and August the driest.
How Atlantic compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Atlantic averaged 1.9° warmer than the 1900s. The biggest change is in January (+4.0°). The shift is larger than in 92% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Atlantic’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 17° to 36°. August is the most reliable, staying within 8°.
Common questions about Atlantic’s climate
What is the coldest month in Atlantic?
December, with a typical high of 29° and a low of 10°.
What is the hottest month in Atlantic?
July, with a typical high of 77° and a low of 48°.
What is the rainiest month in Atlantic?
May, with 2.2 inches of rain and melted snow. The year totals 14 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Atlantic itself (about a 3-mile square). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.