Climate averages 1991–2020
Fresno weather
in August.
A very hot, very dry month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Fresno: daytime highs average 35.9°C and nights cool to about 21.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical August (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average August day.
The nearest other city in this atlas is Clovis (11 km away). In August its highs average 35.8°C, about as warm as Fresno, with almost no rain (under 1 mm).
Among the 498 cities listed in the United States, Fresno ranks joint 23rd of 498 for the warmest August highs and joint 13th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Fresno is 6.0°C warmer than that mean.
From August to September, average highs fall by 3.3°C to 32.6°C, and monthly rainfall rises from under 1 mm to 1.8 mm.
The annual picture
August 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
Fresno climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.5°C4.2°C | 4.2°C | 89 | 7.5 | 10.010 h |
| February | 16.4°C5.6°C | 5.6°C | 75 | 8.1 | 10.811 h |
| March | 19.4°C7.8°C | 7.8°C | 74 | 7.3 | 11.912 h |
| April | 23.0°C10.2°C | 10.2°C | 35 | 4.4 | 13.113 h |
| May | 28.2°C14.1°C | 14.1°C | 17 | 2.7 | 14.114 h |
| June | 33.3°C18.1°C | 18.1°C | 4.8 | 0.6 | 14.615 h |
| July | 36.6°C21.6°C | 21.6°C | 1.5 | 0.2 | 14.414 h |
| August, selected | 35.9°C21.0°C | 21.0°C | 0.4 | 0.2 | 13.614 h |
| September | 32.6°C18.2°C | 18.2°C | 1.8 | 0.5 | 12.512 h |
| October | 26.2°C13.2°C | 13.2°C | 22 | 2.1 | 11.311 h |
| November | 19.0°C7.9°C | 7.9°C | 36 | 4.3 | 10.210 h |
| December | 14.2°C4.3°C | 4.3°C | 71 | 6.9 | 9.710 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
August in nearby cities
- Clovis in AugustUnited States · 11 kmHigh 35.8°C · Low 20.4°C · 0.4 mm rain
- Visalia in AugustUnited States · 63 kmHigh 36.2°C · Low 21.2°C · 0.6 mm rain
- Merced in AugustUnited States · 88 kmHigh 35.3°C · Low 19.6°C · 0.6 mm rain
- Turlock in AugustUnited States · 126 kmHigh 34.7°C · Low 18.9°C · 1.0 mm rain
- Modesto in AugustUnited States · 147 kmHigh 34.1°C · Low 17.7°C · 0.8 mm rain
- Bakersfield in AugustUnited States · 167 kmHigh 35.0°C · Low 21.6°C · 0 mm rain
- Salinas in AugustUnited States · 168 kmHigh 23.5°C · Low 13.6°C · 1.4 mm rain
- Manteca in AugustUnited States · 173 kmHigh 32.6°C · Low 16.2°C · 1.2 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 Fresno) is explained once on the Fresno year overview and on the Sources, method and limits page.
Clovis lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.