WeatherArchive / Compare cities / Dallas vs Washington, D.C.
Dallas vs Washington, D.C. weather: climate comparison
Dallas is the warmer of the two, averaging 67°F (20°C) over the year against 57°F (14°C) in Washington, D.C.. Washington, D.C. is wetter, with 45.5 in (1157 mm) of precipitation a year to Dallas's 43.0 in (1092 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 19.7°C Dallas
14.0°C Washington, D.C. - Annual precipitation
- 1091.9 mm Dallas
1156.6 mm Washington, D.C. - Rainy days a year
- 94 Dallas
120 Washington, D.C. - Sunshine per day
- 9.4 h Dallas
8.9 h Washington, D.C.
Month by month
| Month | Dallas | Washington, D.C. |
|---|---|---|
| January | 13.4°C | 5.9°C |
| February | 15.5°C | 8.1°C |
| March | 20.1°C | 12.8°C |
| April | 24.2°C | 18.8°C |
| May | 28.3°C | 23.5°C |
| June | 32.2°C | 28.6°C |
| July | 34.7°C | 30.9°C |
| August | 34.9°C | 29.6°C |
| September | 31.2°C | 25.9°C |
| October | 25.7°C | 19.7°C |
| November | 19.3°C | 13.4°C |
| December | 14.6°C | 8.2°C |
Year at a glance
| Measure | Dallas | Washington, D.C. |
|---|---|---|
| Mean annual temperature | 19.7°C | 14.0°C |
| Warmest month (avg high) | Aug · 35°C | Jul · 31°C |
| Coldest month (avg low) | Jan · 4°C | Jan · -2°C |
| Annual range (warmest high − coldest low) | 31°C | 33°C |
| Annual precipitation | 1091.9 mm | 1156.6 mm |
| Rainy days per year | 94 | 120 |
| Wettest / driest month | May / Jul | Jul / Nov |
| Average sunshine per day | 9.4 h | 8.9 h |
In short: Dallas is the warmest overall (19.7°C mean); Washington, D.C. gets the most precipitation (1156.6 mm a year); Dallas is the sunniest (9.4 h a day on average); Dallas has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Dallas 42.9°C (2023-08-18), Washington, D.C. 41.1°C (2012-07-07). Record low: Dallas -18.9°C (2021-02-16), Washington, D.C. -23.3°C (1996-02-05).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Dallas (32.79, -96.82) and Washington, D.C. (38.91, -77.07).
Which months differ most?
The gap in average highs is widest in January, when Dallas runs 14°F / 8°C warmer, and narrowest in June (7°F / 4°C apart). The biggest rainfall difference is in July: Washington, D.C. gets 2.8 in (72 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Dallas climate and Washington, D.C. climate pages.
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Questions people ask
Is Dallas warmer than Washington, D.C.?
Dallas is warmer on average: its mean annual temperature is 67°F (20°C) against 57°F (14°C) in Washington, D.C. (ERA5, 1996–2025).
Which gets more rain, Dallas or Washington, D.C.?
Washington, D.C., with about 45.5 in (1157 mm) of precipitation a year and 120 days with at least 1 mm, compared with 43.0 in (1092 mm) and 94 days in Dallas.
Which is sunnier, Dallas or Washington, D.C.?
Dallas averages more sunshine: 9.4 h a day against 8.9 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.