Rocky Mountain, OK climate
Rocky Mountain has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 91°, a January night drops to 27°, and about 4 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Rocky Mountain feels like
Winter
Spring
Summer
Fall
Rocky Mountain 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 | 48° | 27° | 2.8" | 1.7" | 5 | 2 | 34° – 46° |
| February | 53° | 32° | 2.6" | 1.5" | 5 | 1 | 35° – 51° |
| March | 62° | 40° | 4.1" | 0.5" | 7 | 0 | 44° – 60° |
| April | 70° | 48° | 5.1" | 0 | 8 | 0 | 54° – 65° |
| May | 78° | 57° | 6.1" | 0 | 9 | 0 | 64° – 74° |
| June | 86° | 65° | 4.9" | 0 | 9 | 0 | 71° – 81° |
| July | 91° | 69° | 4.2" | 0 | 7 | 0 | 74° – 87° |
| August | 90° | 68° | 4.0" | 0 | 5 | 0 | 72° – 85° |
| September | 83° | 60° | 4.5" | 0 | 6 | 0 | 68° – 79° |
| October | 72° | 49° | 4.5" | 0 | 7 | 0 | 55° – 67° |
| November | 60° | 39° | 4.1" | 0.3" | 7 | 0 | 43° – 57° |
| December | 50° | 31° | 3.4" | 0.3" | 5 | 0 | 29° – 46° |
| Year | 70° | 49° | 50.3" | 4.3" | 81 | 3 |
“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 Rocky Mountain
Rocky Mountain gets 50 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 81 days a year.
About 217 frost-free days a year
In half of years the last 32° night comes by March 31 and the first one by November 4. That leaves about 217 frost-free days for gardens, longer than 81% of U.S. towns.
Heating and cooling a home in Rocky Mountain
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Rocky Mountain, 71% of that work is heating and 29% 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.
Rocky Mountain and its neighbors
Rocky Mountain borders 2 towns with climate data. January nights across them vary by 0.8°. Tenkiller has both the coldest January nights (27°) and the hottest July afternoons (92°). Rocky Mountain’s January low is 27° and its July high 91°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Rocky Mountain 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 Rocky Mountain averaged 0.5° warmer than the 1900s. The biggest change is in February (+1.3°). The shift is smaller than in 97% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Rocky Mountain’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 29° to 46°. May is the most reliable, staying within 9°.
Common questions about Rocky Mountain’s climate
What is the coldest month in Rocky Mountain?
January, with a typical high of 48° and a low of 27°.
What is the hottest month in Rocky Mountain?
July, with a typical high of 91° and a low of 69°. About 43 days a year reach 90°.
How much snow does Rocky Mountain get?
About 4 inches in a normal winter, most of it in January.
When is the first frost in Rocky Mountain?
In half of years the first 32° night comes by November 4, and the last spring frost by March 31.
What is the rainiest month in Rocky Mountain?
May, with 6.1 inches of rain and melted snow. The year totals 50 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Rocky Mountain itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Tahlequah, OK (15 mi, snow) and Stilwell 5 Nnw, OK (10 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.