Photo: Bobak Ha'Eri · CC BY 3.0Green River’s winters are colder but less snowy than most of the U.S.
A typical July afternoon reaches 99°, a January night drops to 17°, and about 5 inches of snow falls in a normal winter.
A year in Green River at a glance
Each month’s typical high and low, and what it brings.
What stands out about Green River’s climate
Compared with towns across the U.S., with Green River’s place in Utah beside it.
What a year in Green River feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 5 inches of snow a winter
Snow, measured at Green River Aviation, UT, falls mostly in January. Precipitation (rain plus melted snow) adds up to 7 inches a year; October is the wettest month and June the driest. Rain or snow falls on about 46 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Living with Green River’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 6b.
Months with highs of 62–84° and lows of 40° or more: May. 20 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Green River from natural hazards, river flooding is the largest share (47%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Green River and similar climates
TownRatings has no climate map of the towns around Green River yet.
Climates most like Green River’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Green River, UT | 17° | 99° | 7" | 4.8" |
| Fallon, NV | 22° | 96° | 4" | 4.5" |
| Shiprock, NM | 21° | 95° | 7" | 8.6" |
| Page, AZ | 28° | 99° | 7" | 0.6" |
| Kermit, TX | 30° | 98° | 12" | 1.9" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
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°).
A bigger shift than in 98% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Green River compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Green River’s place among Utah’s.
Green River weather by month
Highs, lows and precipitation from NOAA’s grid at Green River’s center; snow, wet days and snow on the ground from Green River Aviation, UT. 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" | 0.0" | 4 | 0 | 51° – 62° |
| May | 81° | 48° | 0.6" | 0.0" | 4 | 0 | 59° – 69° |
| June | 93° | 58° | 0.3" | 0.0" | 2 | 0 | 69° – 82° |
| July | 99° | 65° | 0.5" | 0.0" | 3 | 0 | 77° – 86° |
| August | 95° | 63° | 0.7" | 0.0" | 5 | 0 | 75° – 85° |
| September | 86° | 53° | 0.9" | 0.0" | 5 | 0 | 65° – 74° |
| October | 71° | 40° | 0.9" | 0.0" | 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 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 18° to 39°. September is the most reliable, staying within 9°.
Where Green River’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Green River’s center.
- Snow: Green River Aviation, UT (NOAA station in town).
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Green River’s climate
What is the weather like in Green River?
A typical July afternoon reaches 99°, a January night drops to 17°, and about 5 inches of snow falls in a normal winter. Colder January nights than 75% of U.S. towns; hotter July afternoons than all but 162 U.S. towns.
How cold does it get in Green River in winter?
January nights average 17°. In the coldest January of the last 30 years the month averaged 18°.
How much snow does Green River get?
About 4.8 inches in a normal winter at Green River Aviation, UT, most of it in January, with snow on the ground about 11 days a year.
How hot does it get in Green River?
July, with a typical high of 99°. 90° days are rare.
What growing zone is Green River in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Green River?
By one simple rule (highs of 62–84° and lows of 40° or more), May. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Green River getting warmer?
Yes: 1991–2020 averaged 2.3° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 98% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Green River.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.