Del Rio, TX climate
Del Rio has mild winters and hot summers, with very little rain. A typical July afternoon reaches 98°, a January night drops to 40°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Del Rio feels like
Winter
Spring
Summer
Fall
Del Rio 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 | 65° | 40° | 0.7" | 0.1" | 4 | 0 | 47° – 57° |
| February | 70° | 44° | 0.7" | 0.1" | 4 | 0 | 51° – 62° |
| March | 77° | 52° | 1.2" | 0 | 5 | 0 | 59° – 70° |
| April | 84° | 59° | 1.4" | 0 | 4 | 0 | 65° – 78° |
| May | 90° | 67° | 2.8" | 0 | 6 | 0 | 74° – 84° |
| June | 96° | 74° | 2.2" | 0 | 5 | 0 | 80° – 89° |
| July | 98° | 75° | 1.7" | 0 | 5 | 0 | 81° – 91° |
| August | 98° | 75° | 2.0" | 0 | 5 | 0 | 83° – 90° |
| September | 92° | 69° | 2.9" | 0 | 6 | 0 | 77° – 85° |
| October | 84° | 60° | 1.9" | 0 | 6 | 0 | 69° – 75° |
| November | 72° | 49° | 0.9" | 0 | 4 | 0 | 56° – 67° |
| December | 65° | 41° | 0.8" | 0 | 5 | 0 | 47° – 56° |
| Year | 83° | 59° | 19.2" | 0.2" | 59 | 0 |
“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 Del Rio
Del Rio gets 19 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 59 days a year.
About 290 frost-free days a year
In half of years the last 32° night comes by February 19 and the first one by December 4. That leaves about 290 frost-free days for gardens, longer than 94% of U.S. towns.
Heating and cooling a home in Del Rio
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Del Rio, 29% of that work is heating and 71% is cooling, so air conditioning is the bigger bill.
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.
Del Rio and its neighbors
Del Rio borders 3 towns with climate data. January nights across them vary by 0.8°. Cienegas Terrace has both the coldest January nights (40°) and the hottest July afternoons (98°). Del Rio’s January low is 40° and its July high 98°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Del Rio 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 Del Rio averaged 0.8° warmer than the 1900s. The biggest change is in March (+1.8°). The shift is smaller than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Del Rio’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 65° to 78°. October is the most reliable, staying within 6°.
Common questions about Del Rio’s climate
What is the coldest month in Del Rio?
January, with a typical high of 65° and a low of 40°.
What is the hottest month in Del Rio?
August, with a typical high of 98° and a low of 75°. About 137 days a year reach 90°.
How much snow does Del Rio get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Del Rio?
In half of years the first 32° night comes by December 4, and the last spring frost by February 19.
What is the rainiest month in Del Rio?
September, with 2.9 inches of rain and melted snow. The year totals 19 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Del Rio itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Del Rio 4nw, TX (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.