Climate averages 1991–2020
Merced weather
in August.
A very hot, very dry month: the 2nd warmest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Merced: daytime highs average 35.3°C and nights cool to about 19.6°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 (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 13 h 36 min on an average August day.
The nearest other city in this atlas is Turlock (39 km away). In August its highs average 34.7°C, 0.6°C cooler than Merced, with 1.0 mm of rain.
Among the 498 cities listed in the United States, Merced ranks 28th of 498 for the warmest August highs and joint 26th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Merced is 5.4°C warmer than that mean.
From August to September, average highs fall by 3.1°C to 32.2°C, and monthly rainfall rises from under 1 mm to 1.7 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
Merced climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.2°C4.3°C | 4.3°C | 90 | 8.1 | 9.910 h |
| February | 16.0°C5.6°C | 5.6°C | 80 | 8.5 | 10.811 h |
| March | 18.9°C7.6°C | 7.6°C | 71 | 7.7 | 11.912 h |
| April | 22.5°C9.9°C | 9.9°C | 32 | 4.7 | 13.113 h |
| May | 27.8°C13.7°C | 13.7°C | 19 | 2.8 | 14.114 h |
| June | 32.9°C17.3°C | 17.3°C | 3.6 | 0.6 | 14.715 h |
| July | 36.2°C20.2°C | 20.2°C | 0.6 | 0.2 | 14.514 h |
| August, selected | 35.3°C19.6°C | 19.6°C | 0.6 | 0.1 | 13.614 h |
| September | 32.2°C17.3°C | 17.3°C | 1.7 | 0.4 | 12.512 h |
| October | 26.0°C12.7°C | 12.7°C | 21 | 2.3 | 11.311 h |
| November | 18.7°C7.6°C | 7.6°C | 37 | 4.8 | 10.210 h |
| December | 13.9°C4.4°C | 4.4°C | 75 | 7.4 | 9.610 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
- Turlock in AugustUnited States · 39 kmHigh 34.7°C · Low 18.9°C · 1.0 mm rain
- Modesto in AugustUnited States · 59 kmHigh 34.1°C · Low 17.7°C · 0.8 mm rain
- Manteca in AugustUnited States · 85 kmHigh 32.6°C · Low 16.2°C · 1.2 mm rain
- Clovis in AugustUnited States · 87 kmHigh 35.8°C · Low 20.4°C · 0.4 mm rain
- Fresno in AugustUnited States · 88 kmHigh 35.9°C · Low 21.0°C · 0.4 mm rain
- Tracy in AugustUnited States · 96 kmHigh 32.9°C · Low 16.3°C · 1.9 mm rain
- Stockton in AugustUnited States · 102 kmHigh 32.1°C · Low 15.8°C · 1.3 mm rain
- Livermore in AugustUnited States · 121 kmHigh 29.5°C · Low 14.8°C · 2.1 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 Merced) is explained once on the Merced year overview and on the Sources, method and limits page.