Richardson, TX climate
Richardson has mild winters and hot summers. A typical July afternoon reaches 95°, a January night drops to 35°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Richardson feels like
Winter
Spring
Summer
Fall
Richardson 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° | 35° | 2.6" | 0.1" | 7 | 0 | 41° – 54° |
| February | 60° | 39° | 3.0" | 0.9" | 7 | 0 | 41° – 59° |
| March | 67° | 47° | 3.7" | 0.3" | 8 | 0 | 52° – 64° |
| April | 75° | 54° | 3.5" | 0 | 7 | 0 | 60° – 70° |
| May | 82° | 63° | 4.8" | 0 | 9 | 0 | 69° – 78° |
| June | 90° | 71° | 3.9" | 0 | 7 | 0 | 77° – 85° |
| July | 95° | 74° | 2.1" | 0 | 5 | 0 | 80° – 90° |
| August | 95° | 74° | 2.4" | 0 | 5 | 0 | 78° – 92° |
| September | 88° | 67° | 3.1" | 0 | 6 | 0 | 73° – 84° |
| October | 78° | 56° | 4.9" | 0 | 7 | 0 | 62° – 72° |
| November | 66° | 45° | 3.1" | 0.1" | 7 | 0 | 50° – 62° |
| December | 57° | 37° | 3.3" | 0.3" | 7 | 0 | 39° – 52° |
| Year | 76° | 55° | 40.4" | 1.7" | 82 | 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 Richardson
Richardson gets 40 inches of rain and melted snow a year. October is the wettest month and July the driest. Rain or snow falls on about 82 days a year.
About 259 frost-free days a year
In half of years the last 32° night comes by March 7 and the first one by November 21. That leaves about 259 frost-free days for gardens, longer than 92% of U.S. towns.
Heating and cooling a home in Richardson
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Richardson, 47% of that work is heating and 53% 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.
Richardson and its neighbors
Richardson borders 4 towns with climate data. January nights across them vary by 1.2°. Murphy has the coldest January nights (35°) and Dallas the hottest July afternoons (95°). Richardson’s January low is 35° and its July high 95°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Richardson 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 Richardson averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.0°). The shift is smaller than in 75% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Richardson’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 41° to 59°. June is the most reliable, staying within 8°.
Common questions about Richardson’s climate
What is the coldest month in Richardson?
January, with a typical high of 56° and a low of 35°.
What is the hottest month in Richardson?
August, with a typical high of 95° and a low of 74°. About 93 days a year reach 90°.
How much snow does Richardson get?
About 2 inches in a normal winter, most of it in February.
When is the first frost in Richardson?
In half of years the first 32° night comes by November 21, and the last spring frost by March 7.
What is the rainiest month in Richardson?
October, with 4.9 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Richardson itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Dallas Love Fld, TX (12 mi, snow) and Richardson, TX (3 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.