Climate averages 1991–2020
Durham weather
in July.
A hot, wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Durham: daytime highs average 31.4°C and nights cool to about 21.9°C. By daytime temperature it is the warmest month of the year.
Expect about 110 mm of rain on roughly 15 days, which makes July a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 21 min on an average July day.
The nearest other city in this atlas is Cary (25 km away). In July its highs average 31.0°C, about as warm as Durham, with 116 mm of rain.
Among the 498 cities listed in the United States, Durham ranks joint 167th of 498 for the warmest July highs and 429th of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Durham is 1.1°C warmer than that mean.
From July to August, average highs fall by 1.2°C to 30.2°C, and monthly rainfall falls from 110 mm to 99 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
Durham climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C0.1°C | 0.1°C | 92 | 9.4 | 10.010 h |
| February | 11.6°C1.2°C | 1.2°C | 81 | 8.9 | 10.911 h |
| March | 15.8°C4.6°C | 4.6°C | 108 | 10.5 | 11.912 h |
| April | 21.1°C9.7°C | 9.7°C | 89 | 9.3 | 13.113 h |
| May | 25.4°C14.7°C | 14.7°C | 88 | 10.6 | 14.114 h |
| June | 29.4°C19.4°C | 19.4°C | 98 | 12.0 | 14.615 h |
| July, selected | 31.4°C21.9°C | 21.9°C | 110 | 14.9 | 14.314 h |
| August | 30.2°C21.0°C | 21.0°C | 99 | 11.6 | 13.514 h |
| September | 26.9°C17.9°C | 17.9°C | 112 | 9.4 | 12.412 h |
| October | 21.4°C11.6°C | 11.6°C | 79 | 7.5 | 11.311 h |
| November | 15.5°C5.6°C | 5.6°C | 85 | 7.7 | 10.310 h |
| December | 11.1°C1.9°C | 1.9°C | 89 | 9.1 | 9.810 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
- Cary in JulyUnited States · 25 kmHigh 31.0°C · Low 22.0°C · 116 mm rain
- Raleigh in JulyUnited States · 34 kmHigh 31.3°C · Low 22.3°C · 116 mm rain
- Greensboro in JulyUnited States · 81 kmHigh 30.9°C · Low 21.2°C · 101 mm rain
- High Point in JulyUnited States · 100 kmHigh 30.9°C · Low 21.1°C · 102 mm rain
- Fayetteville in JulyUnited States · 105 kmHigh 31.9°C · Low 22.8°C · 118 mm rain
- Winston-Salem in JulyUnited States · 122 kmHigh 31.1°C · Low 21.0°C · 93 mm rain
- Greenville in JulyUnited States · 145 kmHigh 30.9°C · Low 22.6°C · 136 mm rain
- Lynchburg in JulyUnited States · 159 kmHigh 30.8°C · Low 20.8°C · 82 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 Durham) is explained once on the Durham year overview and on the Sources, method and limits page.