Climate averages 1991–2020
Manteca weather
in August.
A hot, very dry month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Manteca: daytime highs average 32.6°C and nights cool to about 16.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 1.2 mm of rain on fewer than one day, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 37 min on an average August day.
The nearest other city in this atlas is Stockton (19 km away). In August its highs average 32.1°C, about as warm as Manteca, with 1.3 mm of rain.
Among the 498 cities listed in the United States, Manteca ranks joint 113th of 498 for the warmest August highs and 70th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Manteca is 2.7°C warmer than that mean.
From August to September, average highs fall by 2.3°C to 30.3°C, and monthly rainfall rises from 1.2 mm to 1.9 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
Manteca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.8°C4.7°C | 4.7°C | 84 | 8.6 | 9.910 h |
| February | 15.5°C5.8°C | 5.8°C | 78 | 8.6 | 10.811 h |
| March | 18.3°C7.4°C | 7.4°C | 65 | 8.2 | 11.912 h |
| April | 21.4°C9.2°C | 9.2°C | 34 | 4.8 | 13.113 h |
| May | 26.3°C12.3°C | 12.3°C | 18 | 3.0 | 14.214 h |
| June | 30.9°C15.0°C | 15.0°C | 3.3 | 0.8 | 14.715 h |
| July | 33.4°C16.6°C | 16.6°C | 0.1 | 0.0 | 14.515 h |
| August, selected | 32.6°C16.2°C | 16.2°C | 1.2 | 0.1 | 13.614 h |
| September | 30.3°C15.3°C | 15.3°C | 1.9 | 0.6 | 12.512 h |
| October | 24.9°C12.2°C | 12.2°C | 20 | 2.4 | 11.311 h |
| November | 17.9°C7.7°C | 7.7°C | 39 | 5.2 | 10.210 h |
| December | 13.5°C4.7°C | 4.7°C | 74 | 7.9 | 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
- Stockton in AugustUnited States · 19 kmHigh 32.1°C · Low 15.8°C · 1.3 mm rain
- Tracy in AugustUnited States · 20 kmHigh 32.9°C · Low 16.3°C · 1.9 mm rain
- Modesto in AugustUnited States · 26 kmHigh 34.1°C · Low 17.7°C · 0.8 mm rain
- Turlock in AugustUnited States · 47 kmHigh 34.7°C · Low 18.9°C · 1.0 mm rain
- Livermore in AugustUnited States · 50 kmHigh 29.5°C · Low 14.8°C · 2.1 mm rain
- Antioch in AugustUnited States · 57 kmHigh 30.0°C · Low 15.4°C · 1.5 mm rain
- Pleasanton in AugustUnited States · 60 kmHigh 28.9°C · Low 14.8°C · 2.1 mm rain
- San Ramon in AugustUnited States · 67 kmHigh 28.1°C · Low 14.7°C · 1.4 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 Manteca) is explained once on the Manteca year overview and on the Sources, method and limits page.