Armstrong, OK climate
Armstrong has mild winters and hot summers. A typical July afternoon reaches 94°, a January night drops to 31°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Armstrong feels like
Winter
Spring
Summer
Fall
Armstrong 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 | 53° | 31° | 2.5" | 0.7" | 6 | 0 | 39° – 51° |
| February | 58° | 35° | 2.5" | 0.4" | 6 | 0 | 39° – 54° |
| March | 66° | 44° | 3.8" | 0.5" | 7 | 0 | 50° – 62° |
| April | 74° | 50° | 4.0" | 0 | 7 | 0 | 57° – 68° |
| May | 81° | 60° | 5.8" | 0 | 9 | 0 | 67° – 76° |
| June | 90° | 69° | 4.4" | 0 | 6 | 0 | 76° – 84° |
| July | 94° | 72° | 2.9" | 0 | 5 | 0 | 79° – 90° |
| August | 94° | 71° | 2.5" | 0 | 4 | 0 | 76° – 91° |
| September | 87° | 63° | 3.9" | 0 | 6 | 0 | 71° – 82° |
| October | 77° | 52° | 4.5" | 0 | 6 | 0 | 58° – 70° |
| November | 64° | 41° | 3.2" | 0 | 5 | 0 | 46° – 59° |
| December | 55° | 33° | 3.2" | 0.4" | 5 | 0 | 35° – 49° |
| Year | 74° | 52° | 43.1" | 2.0" | 73 | 1 |
“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 Armstrong
Armstrong gets 43 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 73 days a year.
About 221 frost-free days a year
In half of years the last 32° night comes by March 31 and the first one by November 5. That leaves about 221 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Armstrong
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Armstrong, 57% of that work is heating and 43% 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 Armstrong 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 Armstrong averaged 0.6° warmer than the 1900s. The biggest change is in March (+1.8°). The shift is smaller than in 95% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Armstrong’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. August swings the most: between 1991 and 2020 its average temperature ranged from 76° to 91°. May is the most reliable, staying within 9°.
Common questions about Armstrong’s climate
What is the coldest month in Armstrong?
January, with a typical high of 53° and a low of 31°.
What is the hottest month in Armstrong?
August, with a typical high of 94° and a low of 71°. About 82 days a year reach 90°.
How much snow does Armstrong get?
About 2 inches in a normal winter, most of it in January.
When is the first frost in Armstrong?
In half of years the first 32° night comes by November 5, and the last spring frost by March 31.
What is the rainiest month in Armstrong?
May, with 5.8 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Armstrong itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Durant, OK (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.