Fort Supply, OK climate
Fort Supply has chilly winters and hot summers. A typical July afternoon reaches 95°, a January night drops to 22°, and about 12 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fort Supply feels like
Winter
Spring
Summer
Fall
Fort Supply 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 49° | 22° | 0.8" | 2.7" | 4 | 29° – 44° |
| February | 53° | 25° | 0.8" | 1.9" | 4 | 32° – 47° |
| March | 62° | 35° | 1.7" | 3.5" | 6 | 41° – 58° |
| April | 71° | 43° | 2.3" | 0.1" | 7 | 51° – 63° |
| May | 80° | 54° | 3.2" | 0 | 8 | 60° – 76° |
| June | 89° | 64° | 3.8" | 0 | 7 | 71° – 83° |
| July | 95° | 68° | 2.5" | 0 | 6 | 77° – 88° |
| August | 93° | 67° | 3.0" | 0 | 7 | 74° – 85° |
| September | 85° | 58° | 1.8" | 0 | 5 | 67° – 79° |
| October | 73° | 45° | 2.5" | 0.1" | 6 | 52° – 65° |
| November | 60° | 33° | 1.0" | 0.4" | 4 | 39° – 53° |
| December | 49° | 24° | 1.1" | 3.7" | 4 | 28° – 40° |
| Year | 71° | 45° | 24.5" | 12.4" | 69 |
“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 Fort Supply
Fort Supply gets 24 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 69 days a year.
About 179 frost-free days a year
In half of years the last 32° night comes by April 21 and the first one by October 19. That leaves about 179 frost-free days for gardens, longer than 51% of U.S. towns.
Heating and cooling a home in Fort Supply
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fort Supply, 74% of that work is heating and 26% is cooling.
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 Fort Supply 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 Fort Supply averaged 0.6° warmer than the 1900s. The biggest change is in March (+2.3°). The shift is smaller than in 93% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fort Supply’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 41° to 58°. July is the most reliable, staying within 11°.
Common questions about Fort Supply’s climate
What is the coldest month in Fort Supply?
January, with a typical high of 49° and a low of 22°.
What is the hottest month in Fort Supply?
July, with a typical high of 95° and a low of 68°. About 77 days a year reach 90°.
How much snow does Fort Supply get?
About 12 inches in a normal winter, most of it in December.
When is the first frost in Fort Supply?
In half of years the first 32° night comes by October 19, and the last spring frost by April 21.
What is the rainiest month in Fort Supply?
June, with 3.8 inches of rain and melted snow. The year totals 24 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fort Supply itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ft Supply 3se, OK (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.