Manderson, WY climate
Manderson has cold winters and warm summers, with very little rain. A typical July afternoon reaches 91°, a January night drops to 7°, and about 21 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Manderson feels like
Winter
Spring
Summer
Fall
Manderson 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 | 31° | 7° | 0.2" | 3.8" | 3 | 22 | 8° – 31° |
| February | 38° | 13° | 0.3" | 3.7" | 3 | 17 | 12° – 36° |
| March | 52° | 24° | 0.3" | 2.4" | 3 | 4 | 28° – 47° |
| April | 61° | 32° | 0.8" | 2.1" | 5 | 1 | 41° – 52° |
| May | 71° | 42° | 1.5" | 0.2" | 8 | 0 | 51° – 61° |
| June | 82° | 51° | 1.1" | 0 | 7 | 0 | 59° – 74° |
| July | 91° | 57° | 0.6" | 0 | 5 | 0 | 65° – 79° |
| August | 89° | 54° | 0.4" | 0 | 4 | 0 | 66° – 75° |
| September | 77° | 44° | 1.0" | 0.4" | 5 | 0 | 56° – 66° |
| October | 61° | 32° | 0.8" | 1.7" | 5 | 1 | 39° – 53° |
| November | 45° | 19° | 0.4" | 3.1" | 3 | 6 | 19° – 42° |
| December | 33° | 9° | 0.3" | 3.8" | 3 | 15 | 11° – 27° |
| Year | 61° | 32° | 7.7" | 21.2" | 55 | 65 |
“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 Manderson
Manderson gets 8 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 55 days a year. Snow covers the ground about 65 days of the year.
About 164 frost-free days a year
In half of years the last 32° night comes by April 28 and the first one by October 10. That leaves about 164 frost-free days for gardens, shorter than 67% of U.S. towns.
Heating and cooling a home in Manderson
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Manderson, 88% of that work is heating and 12% 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 Manderson 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 Manderson averaged 1.9° warmer than the 1900s. The biggest change is in January (+4.7°). The shift is larger than in 92% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Manderson’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 12° to 36°. August is the most reliable, staying within 9°.
Common questions about Manderson’s climate
What is the coldest month in Manderson?
January, with a typical high of 31° and a low of 7°.
What is the hottest month in Manderson?
July, with a typical high of 91° and a low of 57°. About 49 days a year reach 90°.
How much snow does Manderson get?
About 21 inches in a normal winter, most of it in January.
When is the first frost in Manderson?
In half of years the first 32° night comes by October 10, and the last spring frost by April 28.
What is the rainiest month in Manderson?
May, with 1.5 inches of rain and melted snow. The year totals 8 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Manderson itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Rairden 2wsw, WY (6 mi, snow) and Basin, WY (8 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.