Geronimo, OK climate
Geronimo has mild winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 29°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Geronimo feels like
Winter
Spring
Summer
Fall
Geronimo 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° | 29° | 1.3" | 0.4" | 4 | 0 | 37° – 48° |
| February | 58° | 33° | 1.5" | 0.7" | 4 | 0 | 39° – 52° |
| March | 66° | 42° | 2.5" | 0.1" | 4 | 0 | 48° – 60° |
| April | 75° | 49° | 3.1" | 0 | 5 | 0 | 56° – 69° |
| May | 83° | 59° | 4.5" | 0 | 6 | 0 | 67° – 77° |
| June | 91° | 68° | 3.8" | 0 | 6 | 0 | 76° – 87° |
| July | 96° | 72° | 2.5" | 0 | 4 | 0 | 80° – 92° |
| August | 96° | 71° | 2.7" | 0 | 4 | 0 | 77° – 92° |
| September | 87° | 63° | 3.2" | 0 | 5 | 0 | 70° – 83° |
| October | 76° | 51° | 3.0" | 0 | 5 | 0 | 58° – 68° |
| November | 64° | 40° | 2.0" | 0.3" | 4 | 0 | 46° – 57° |
| December | 54° | 31° | 1.8" | 0.7" | 4 | 0 | 35° – 46° |
| Year | 75° | 51° | 31.8" | 2.2" | 53 | 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 Geronimo
Geronimo gets 32 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 53 days a year.
About 217 frost-free days a year
In half of years the last 32° night comes by April 1 and the first one by November 5. That leaves about 217 frost-free days for gardens, longer than 81% of U.S. towns.
Heating and cooling a home in Geronimo
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Geronimo, 58% of that work is heating and 42% 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 Geronimo 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 Geronimo averaged 0.8° warmer than the 1900s. The biggest change is in January (+2.0°). The shift is smaller than in 86% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Geronimo’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 77° to 92°. May is the most reliable, staying within 10°.
Common questions about Geronimo’s climate
What is the coldest month in Geronimo?
January, with a typical high of 53° and a low of 29°.
What is the hottest month in Geronimo?
July, with a typical high of 96° and a low of 72°. About 102 days a year reach 90°.
How much snow does Geronimo get?
About 2 inches in a normal winter, most of it in February.
When is the first frost in Geronimo?
In half of years the first 32° night comes by November 5, and the last spring frost by April 1.
What is the rainiest month in Geronimo?
May, with 4.5 inches of rain and melted snow. The year totals 32 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Geronimo itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Walters, OK (10 mi, snow) and Lawton Municipal Airport, OK (5 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.