Castle, OK climate
Castle has chilly winters and hot summers. A typical July afternoon reaches 93°, a January night drops to 28°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Castle feels like
Winter
Spring
Summer
Fall
Castle 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 | 50° | 28° | 1.8" | 2.9" | 6 | 34° – 49° |
| February | 55° | 32° | 2.0" | 0.4" | 6 | 37° – 52° |
| March | 63° | 40° | 3.1" | 0.6" | 8 | 46° – 61° |
| April | 72° | 48° | 4.3" | 0 | 7 | 54° – 67° |
| May | 79° | 58° | 5.7" | 0 | 9 | 66° – 76° |
| June | 87° | 66° | 5.1" | 0 | 9 | 73° – 83° |
| July | 93° | 70° | 3.5" | 0 | 6 | 77° – 89° |
| August | 92° | 69° | 3.5" | 0 | 6 | 74° – 88° |
| September | 84° | 62° | 4.4" | 0 | 7 | 68° – 80° |
| October | 74° | 50° | 3.8" | 0 | 7 | 56° – 68° |
| November | 62° | 39° | 2.8" | 0.3" | 6 | 44° – 57° |
| December | 52° | 31° | 2.4" | 0.8" | 6 | 30° – 46° |
| Year | 72° | 49° | 42.5" | 5.0" | 84 |
“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 Castle
Castle gets 42 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 84 days a year.
About 229 frost-free days a year
In half of years the last 32° night comes by March 24 and the first one by November 9. That leaves about 229 frost-free days for gardens, longer than 86% of U.S. towns.
Heating and cooling a home in Castle
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Castle, 61% of that work is heating and 39% 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 Castle compares
Compared with every U.S. town and city on TownTapestry, each counted once.
About as warm as it used to be
The last 30 years in Castle averaged 0.1° warmer than the 1900s. The biggest change is in January (+1.3°). The shift is smaller than in 100% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Castle’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 30° to 46°. June is the most reliable, staying within 10°.
Common questions about Castle’s climate
What is the coldest month in Castle?
January, with a typical high of 50° and a low of 28°.
What is the hottest month in Castle?
July, with a typical high of 93° and a low of 70°. About 75 days a year reach 90°.
How much snow does Castle get?
About 5 inches in a normal winter, most of it in January.
When is the first frost in Castle?
In half of years the first 32° night comes by November 9, and the last spring frost by March 24.
What is the rainiest month in Castle?
May, with 5.7 inches of rain and melted snow. The year totals 42 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Castle itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Okemah, OK (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.