Green River, UT climate
Green River has chilly winters and hot summers, with very little rain. A typical July afternoon reaches 99°, a January night drops to 17°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Green River feels like
Winter
Spring
Summer
Fall
Green River 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 | 41° | 17° | 0.5" | 2.3" | 4 | 8 | 18° – 39° |
| February | 50° | 24° | 0.5" | 0.1" | 5 | 1 | 31° – 43° |
| March | 63° | 33° | 0.5" | 0.8" | 4 | 0 | 43° – 53° |
| April | 71° | 39° | 0.5" | 0 | 4 | 0 | 51° – 62° |
| May | 81° | 48° | 0.6" | 0 | 4 | 0 | 59° – 69° |
| June | 93° | 58° | 0.3" | 0 | 2 | 0 | 69° – 82° |
| July | 99° | 65° | 0.5" | 0 | 3 | 0 | 77° – 86° |
| August | 95° | 63° | 0.7" | 0 | 5 | 0 | 75° – 85° |
| September | 86° | 53° | 0.9" | 0 | 5 | 0 | 65° – 74° |
| October | 71° | 40° | 0.9" | 0 | 4 | 0 | 49° – 60° |
| November | 55° | 27° | 0.4" | 0.1" | 3 | 0 | 35° – 47° |
| December | 41° | 18° | 0.4" | 1.5" | 3 | 2 | 22° – 36° |
| Year | 71° | 40° | 6.6" | 4.8" | 46 | 11 |
“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 Green River
Green River gets 7 inches of rain and melted snow a year. October is the wettest month and June the driest. Rain or snow falls on about 46 days a year. Snow covers the ground about 11 days of the year.
How Green River 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 Green River averaged 2.3° warmer than the 1900s. The biggest change is in January (+4.1°). The shift is larger than in 99% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Green River’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 18° to 39°. September is the most reliable, staying within 9°.
Common questions about Green River’s climate
What is the coldest month in Green River?
January, with a typical high of 41° and a low of 17°.
What is the hottest month in Green River?
July, with a typical high of 99° and a low of 65°.
How much snow does Green River get?
About 5 inches in a normal winter, most of it in January.
What is the rainiest month in Green River?
October, with 0.9 inches of rain and melted snow. The year totals 7 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Green River itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Green River Aviation, UT (1 mi, snow). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.