Grover, WY climate
Grover has cold, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 82°, a January night drops to 7°, and about 88 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grover feels like
Winter
Spring
Summer
Fall
Grover weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 29° | 7° | 1.6" | 21.8" | 12 | 31 | 12° – 25° |
| February | 33° | 9° | 1.4" | 15.0" | 11 | 27 | 16° – 28° |
| March | 43° | 17° | 1.4" | 12.2" | 9 | 23 | 25° – 36° |
| April | 52° | 25° | 1.8" | 5.0" | 10 | 6 | 32° – 44° |
| May | 63° | 33° | 2.2" | 0.8" | 11 | 1 | 42° – 53° |
| June | 73° | 38° | 1.7" | 0.2" | 8 | 0 | 51° – 61° |
| July | 82° | 44° | 0.9" | 0 | 7 | 0 | 53° – 68° |
| August | 81° | 42° | 1.1" | 0 | 6 | 0 | 57° – 65° |
| September | 72° | 35° | 1.5" | 0.2" | 7 | 0 | 50° – 57° |
| October | 57° | 26° | 1.6" | 3.7" | 9 | 2 | 33° – 48° |
| November | 41° | 17° | 1.5" | 11.4" | 10 | 11 | 21° – 36° |
| December | 30° | 8° | 1.6" | 17.5" | 13 | 29 | 14° – 25° |
| Year | 55° | 25° | 18.3" | 87.8" | 111 | 130 |
“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 Grover
Grover gets 18 inches of rain and melted snow a year. May is the wettest month and July the driest. Rain or snow falls on about 111 days a year. Snow covers the ground about 130 days of the year.
A year-round growing season
Heating and cooling a home in Grover
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grover, 100% of that work is heating and 0% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Grover 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 Grover averaged 1.2° warmer than the 1900s. The biggest change is in March (+2.9°). The shift is larger than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grover’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 21° to 36°. September is the most reliable, staying within 7°.
Common questions about Grover’s climate
What is the coldest month in Grover?
January, with a typical high of 29° and a low of 7°.
What is the hottest month in Grover?
July, with a typical high of 82° and a low of 44°. About 2 days a year reach 90°.
How much snow does Grover get?
About 88 inches in a normal winter, most of it in January.
When is the first frost in Grover?
Frost is uncommon. Only 100% of years see a night at 32° or below.
What is the rainiest month in Grover?
May, with 2.2 inches of rain and melted snow. The year totals 18 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grover itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Afton, WY (5 mi, snow) and Bedford 3 Se, WY (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.