Washam, WY climate
Washam has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 86°, a January night drops to 12°, and about 44 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Washam feels like
Winter
Spring
Summer
Fall
Washam 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 | 34° | 12° | 0.3" | 8.1" | 4 | 18 | 17° – 31° |
| February | 38° | 15° | 0.4" | 8.6" | 4 | 16 | 19° – 33° |
| March | 48° | 23° | 0.6" | 6.6" | 6 | 6 | 30° – 41° |
| April | 56° | 29° | 1.0" | 3.6" | 6 | 1 | 38° – 49° |
| May | 67° | 38° | 1.3" | 0.6" | 7 | 0 | 47° – 57° |
| June | 78° | 45° | 0.8" | 0 | 5 | 0 | 56° – 66° |
| July | 86° | 53° | 0.9" | 0 | 5 | 0 | 63° – 74° |
| August | 83° | 51° | 1.0" | 0 | 6 | 0 | 63° – 70° |
| September | 74° | 42° | 1.0" | 0.1" | 6 | 0 | 54° – 61° |
| October | 60° | 31° | 0.9" | 2.4" | 5 | 2 | 36° – 50° |
| November | 45° | 21° | 0.4" | 6.3" | 4 | 6 | 24° – 39° |
| December | 34° | 12° | 0.4" | 7.4" | 4 | 17 | 18° – 28° |
| Year | 58° | 31° | 9.0" | 43.7" | 63 | 66 |
“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 Washam
Washam gets 9 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 63 days a year. Snow covers the ground about 66 days of the year.
About 128 frost-free days a year
In half of years the last 32° night comes by May 22 and the first one by September 29. That leaves about 128 frost-free days for gardens, shorter than 95% of U.S. towns.
Heating and cooling a home in Washam
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Washam, 97% of that work is heating and 3% 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 Washam 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 Washam averaged 1.2° warmer than the 1900s. The biggest change is in March (+3.1°). The shift is larger than in 50% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Washam’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 24° to 39°. August is the most reliable, staying within 7°.
Common questions about Washam’s climate
What is the coldest month in Washam?
January, with a typical high of 34° and a low of 12°.
What is the hottest month in Washam?
July, with a typical high of 86° and a low of 53°. About 6 days a year reach 90°.
How much snow does Washam get?
About 44 inches in a normal winter, most of it in February.
When is the first frost in Washam?
In half of years the first 32° night comes by September 29, and the last spring frost by May 22.
What is the rainiest month in Washam?
May, with 1.3 inches of rain and melted snow. The year totals 9 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Washam itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Flaming Gorge, UT (16 mi, snow) and Manila, UT (2 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.