Geronimo reaches 100° on about 31 days a year, more than 98% of U.S. towns
Nights in January average 29°. Precipitation peaks in May and eases off in January. It is a dry place: less rain and snow fall here than on 84% of U.S. towns. Radiators earn their keep from December to February, the months that average under 50°.
A year in Geronimo at a glance
Each month’s typical high and low, and what it brings.
What stands out about Geronimo’s climate
Compared with towns across the U.S., with Geronimo’s place in Oklahoma beside it.
What a year in Geronimo feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 217 frost-free days a year
In half of years the last 32° night comes by April 1 and the first by November 5. Frost and day counts come from NOAA’s station at Lawton Muni Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Geronimo’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 2 inches of snow a winter
Snow, measured at Walters, OK, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 32 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 53 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Geronimo
58% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Lawton Muni Airport.
Living with Geronimo’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
217 frost-free days in zone 7b. The last frost comes by Apr 1 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 5.
Months with highs of 62–84° and lows of 40° or more: March, April, May and October.
Parks & trails →Of the yearly building losses FEMA expects in Geronimo from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 15%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Geronimo and similar climates
TownRatings has no climate map of the towns around Geronimo yet.
Climates most like Geronimo’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Geronimo, OK | 29° | 96° | 32" | 2.2" |
| Brownwood, TX | 33° | 96° | 29" | 1.3" |
| Oakhurst, CA | 34° | 95° | 29" | 2.5" |
| Wellington, KS | 23° | 93° | 36" | 9.2" |
| Central Point, OR | 32° | 93° | 22" | 3.4" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
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°).
A smaller shift than in 91% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Geronimo compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Geronimo’s place among Oklahoma’s.
Geronimo weather by month
Highs, lows and precipitation from NOAA’s grid at Geronimo’s center; snow, wet days and snow on the ground from Walters, OK. 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" | 0.0" | 5 | 0 | 56° – 69° |
| May | 83° | 59° | 4.5" | 0.0" | 6 | 0 | 67° – 77° |
| June | 91° | 68° | 3.8" | 0.0" | 6 | 0 | 76° – 87° |
| July | 96° | 72° | 2.5" | 0.0" | 4 | 0 | 80° – 92° |
| August | 96° | 71° | 2.7" | 0.0" | 4 | 0 | 77° – 92° |
| September | 87° | 63° | 3.2" | 0.0" | 5 | 0 | 70° – 83° |
| October | 76° | 51° | 3.0" | 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 |
How much a month can swing
A normal is an average. August swings the most: from 1991 to 2020 its average ranged from 77° to 92°. May is the most reliable, staying within 10°.
Where Geronimo’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Geronimo’s center.
- Snow: Walters, OK.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lawton Muni Airport, 5 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Geronimo’s climate
What is the weather like in Geronimo?
A typical July afternoon reaches 96°, a January night drops to 29°, and about 2 inches of snow falls in a normal winter. Milder January nights than 71% of U.S. towns; hotter July afternoons than 97% of U.S. towns.
How cold does it get in Geronimo in winter?
January nights average 29°. About 79 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 37°.
How much snow does Geronimo get?
About 2.2 inches in a normal winter at Walters, OK, most of it in February and December, with snow on the ground about 1 days a year.
How hot does it get in Geronimo?
July, with a typical high of 96° and a low of 72°. About 102 days a year reach 90° and 31 reach 100° (Lawton Muni Airport).
When is the first and last frost in Geronimo?
In half of years the last spring frost (32°) comes by April 1 and the first fall frost by November 5, about 217 frost-free days, at Lawton Muni Airport.
What growing zone is Geronimo in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 10°.
What is the best time of year to visit Geronimo?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Geronimo getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 91% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Geronimo.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.