Arnett, OK climate
Arnett has chilly winters and hot summers. A typical July afternoon reaches 93°, a January night drops to 23°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Arnett feels like
Winter
Spring
Summer
Fall
Arnett weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 49° | 23° | 0.8" | 30° – 44° |
| February | 53° | 27° | 0.9" | 33° – 48° |
| March | 62° | 35° | 1.7" | 42° – 58° |
| April | 71° | 43° | 2.3" | 51° – 63° |
| May | 79° | 54° | 3.4" | 61° – 75° |
| June | 88° | 63° | 3.7" | 70° – 83° |
| July | 93° | 68° | 2.6" | 77° – 88° |
| August | 92° | 66° | 3.0" | 73° – 85° |
| September | 84° | 58° | 1.9" | 67° – 79° |
| October | 72° | 46° | 2.5" | 53° – 66° |
| November | 60° | 34° | 1.0" | 40° – 54° |
| December | 49° | 25° | 1.1" | 30° – 41° |
| Year | 71° | 45° | 24.7" |
“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 Arnett
Arnett gets 25 inches of rain and melted snow a year. June is the wettest month and January the driest.
About 194 frost-free days a year
In half of years the last 32° night comes by April 15 and the first one by October 27. That leaves about 194 frost-free days for gardens, longer than 68% of U.S. towns.
Heating and cooling a home in Arnett
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Arnett, 75% of that work is heating and 25% 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 Arnett 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 Arnett averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.6°). The shift is smaller than in 75% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Arnett’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 42° to 58°. July is the most reliable, staying within 11°.
Common questions about Arnett’s climate
What is the coldest month in Arnett?
January, with a typical high of 49° and a low of 23°.
What is the hottest month in Arnett?
July, with a typical high of 93° and a low of 68°. About 62 days a year reach 90°.
When is the first frost in Arnett?
In half of years the first 32° night comes by October 27, and the last spring frost by April 15.
What is the rainiest month in Arnett?
June, with 3.7 inches of rain and melted snow. The year totals 25 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Arnett itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Arnett 3ne, OK (4 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.