Climate averages 1991–2020
Richardson weather
in July.
A very hot, moderately wet month: one of the warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a very hot month in Richardson: daytime highs average 34.0°C and nights cool to about 24.9°C. By daytime temperature it is one of the warmest months of the year.
Expect about 46 mm of rain on roughly 6 days, which makes July a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 06 min on an average July day.
The nearest other city in this atlas is Plano (8 km away). In July its highs average 33.8°C, about as warm as Richardson, with 46 mm of rain.
Among the 498 cities listed in the United States, Richardson ranks joint 64th of 498 for the warmest July highs and joint 199th of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Richardson is 3.7°C warmer than that mean.
From July to August, average highs stay level at 34.0°C, and monthly rainfall rises from 46 mm to 53 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Richardson climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.7°C3.4°C | 3.4°C | 70 | 6.8 | 10.210 h |
| February | 15.1°C5.3°C | 5.3°C | 73 | 7.5 | 11.011 h |
| March | 19.1°C9.1°C | 9.1°C | 100 | 9.2 | 12.012 h |
| April | 23.5°C13.4°C | 13.4°C | 110 | 8.4 | 13.013 h |
| May | 27.4°C18.3°C | 18.3°C | 138 | 11.1 | 13.814 h |
| June | 31.4°C22.6°C | 22.6°C | 86 | 8.4 | 14.314 h |
| July, selected | 34.0°C24.9°C | 24.9°C | 46 | 5.9 | 14.114 h |
| August | 34.0°C25.0°C | 25.0°C | 53 | 5.3 | 13.413 h |
| September | 30.2°C21.1°C | 21.1°C | 71 | 6.2 | 12.412 h |
| October | 24.7°C15.2°C | 15.2°C | 99 | 7.8 | 11.411 h |
| November | 18.3°C9.2°C | 9.2°C | 93 | 7.0 | 10.510 h |
| December | 13.6°C4.6°C | 4.6°C | 91 | 7.1 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Plano in JulyUnited States · 8 kmHigh 33.8°C · Low 24.9°C · 46 mm rain
- Garland in JulyUnited States · 9 kmHigh 34.0°C · Low 24.9°C · 46 mm rain
- Carrollton in JulyUnited States · 15 kmHigh 34.3°C · Low 25.3°C · 45 mm rain
- Allen in JulyUnited States · 18 kmHigh 33.8°C · Low 24.9°C · 46 mm rain
- Dallas in JulyUnited States · 20 kmHigh 34.5°C · Low 25.3°C · 41 mm rain
- Mesquite in JulyUnited States · 24 kmHigh 34.2°C · Low 25.0°C · 43 mm rain
- Frisco in JulyUnited States · 24 kmHigh 33.8°C · Low 24.8°C · 47 mm rain
- Irving in JulyUnited States · 25 kmHigh 34.5°C · Low 25.3°C · 41 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Richardson) is explained once on the Richardson year overview and on the Sources, method and limits page.
Plano, Garland and Allen lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.