Dewey, OK climate
Dewey has chilly winters and hot summers. A typical July afternoon reaches 92°, a January night drops to 25°, and about 8 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Dewey feels like
Winter
Spring
Summer
Fall
Dewey 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 | 46° | 25° | 1.5" | 1.9" | 6 | 1 | 31° – 45° |
| February | 52° | 28° | 1.8" | 1.6" | 6 | 1 | 34° – 48° |
| March | 61° | 38° | 3.0" | 1.5" | 9 | 0 | 43° – 60° |
| April | 71° | 47° | 4.4" | 0 | 9 | 0 | 53° – 65° |
| May | 78° | 57° | 6.3" | 0 | 11 | 0 | 64° – 74° |
| June | 87° | 66° | 5.3" | 0 | 9 | 0 | 72° – 81° |
| July | 92° | 70° | 3.6" | 0 | 8 | 0 | 76° – 88° |
| August | 92° | 69° | 3.6" | 0 | 8 | 0 | 74° – 85° |
| September | 84° | 60° | 3.7" | 0 | 8 | 0 | 68° – 79° |
| October | 73° | 48° | 3.6" | 0 | 8 | 0 | 54° – 66° |
| November | 60° | 36° | 2.4" | 0.2" | 7 | 0 | 42° – 56° |
| December | 49° | 28° | 2.0" | 3.0" | 6 | 2 | 26° – 43° |
| Year | 70° | 48° | 41.1" | 8.2" | 95 | 4 |
“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 Dewey
Dewey gets 41 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 95 days a year.
About 192 frost-free days a year
In half of years the last 32° night comes by April 12 and the first one by October 21. That leaves about 192 frost-free days for gardens, longer than 66% of U.S. towns.
Heating and cooling a home in Dewey
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Dewey, 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.
How Dewey 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 Dewey averaged 0.6° warmer than the 1900s. The biggest change is in March (+1.9°). The shift is smaller than in 94% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Dewey’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 26° to 43°. June is the most reliable, staying within 9°.
Common questions about Dewey’s climate
What is the coldest month in Dewey?
January, with a typical high of 46° and a low of 25°.
What is the hottest month in Dewey?
July, with a typical high of 92° and a low of 70°. About 71 days a year reach 90°.
How much snow does Dewey get?
About 8 inches in a normal winter, most of it in December.
When is the first frost in Dewey?
In half of years the first 32° night comes by October 21, and the last spring frost by April 12.
What is the rainiest month in Dewey?
May, with 6.3 inches of rain and melted snow. The year totals 41 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Dewey itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Bartlesville F P Fld, OK (5 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.