O'Donnell, TX climate
O'Donnell has mild winters and hot summers, with very little rain. A typical July afternoon reaches 94°, a January night drops to 29°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in O'Donnell feels like
Winter
Spring
Summer
Fall
O'Donnell 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 | 56° | 29° | 0.7" | 1.0" | 3 | 1 | 38° – 49° |
| February | 61° | 33° | 0.7" | 1.4" | 4 | 1 | 40° – 53° |
| March | 69° | 40° | 1.1" | 0.1" | 4 | 0 | 49° – 60° |
| April | 77° | 47° | 1.2" | 0.1" | 4 | 0 | 56° – 68° |
| May | 85° | 57° | 2.6" | 0 | 7 | 0 | 67° – 78° |
| June | 92° | 66° | 2.6" | 0 | 7 | 0 | 74° – 86° |
| July | 94° | 69° | 1.9" | 0 | 6 | 0 | 77° – 86° |
| August | 93° | 68° | 2.1" | 0 | 6 | 0 | 75° – 86° |
| September | 85° | 61° | 2.8" | 0 | 6 | 0 | 68° – 78° |
| October | 76° | 50° | 1.5" | 0 | 5 | 0 | 59° – 68° |
| November | 65° | 38° | 1.0" | 0.7" | 4 | 1 | 45° – 57° |
| December | 57° | 31° | 0.7" | 1.3" | 4 | 1 | 38° – 47° |
| Year | 76° | 49° | 18.8" | 4.6" | 59 | 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 O'Donnell
O'Donnell gets 19 inches of rain and melted snow a year. September is the wettest month and January the driest. Rain or snow falls on about 59 days a year.
About 220 frost-free days a year
In half of years the last 32° night comes by April 2 and the first one by November 8. That leaves about 220 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in O'Donnell
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In O'Donnell, 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 O'Donnell 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 O'Donnell averaged 1.0° warmer than the 1900s. The biggest change is in March (+2.3°). The shift is smaller than in 66% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at O'Donnell’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. April swings the most: between 1991 and 2020 its average temperature ranged from 56° to 68°. October is the most reliable, staying within 9°.
Common questions about O'Donnell’s climate
What is the coldest month in O'Donnell?
January, with a typical high of 56° and a low of 29°.
What is the hottest month in O'Donnell?
July, with a typical high of 94° and a low of 69°. About 89 days a year reach 90°.
How much snow does O'Donnell get?
About 5 inches in a normal winter, most of it in February.
When is the first frost in O'Donnell?
In half of years the first 32° night comes by November 8, and the last spring frost by April 2.
What is the rainiest month in O'Donnell?
September, with 2.8 inches of rain and melted snow. The year totals 19 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for O'Donnell itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Tahoka, TX (14 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.