Climate averages 1991–2020
Modesto weather
in July.
A very hot, very dry month: the warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a very hot month in Modesto: daytime highs average 35.1°C and nights cool to about 18.2°C. By daytime temperature it is the warmest month of the year.
Rain is very rare: less than 1 mm falls in a typical July (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 29 min on an average July day.
The nearest other city in this atlas is Turlock (21 km away). In July its highs average 35.7°C, 0.6°C warmer than Modesto, with almost no rain (under 1 mm).
Among the 498 cities listed in the United States, Modesto ranks 35th of 498 for the warmest July highs and joint 2nd of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Modesto is 4.8°C warmer than that mean.
From July to August, average highs fall by 1.0°C to 34.1°C, and monthly rainfall stays under 1 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
Modesto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.0°C4.9°C | 4.9°C | 92 | 8.4 | 9.910 h |
| February | 15.8°C6.1°C | 6.1°C | 85 | 8.8 | 10.811 h |
| March | 18.7°C7.7°C | 7.7°C | 72 | 8.3 | 11.912 h |
| April | 22.1°C9.6°C | 9.6°C | 36 | 4.7 | 13.113 h |
| May | 27.4°C12.9°C | 12.9°C | 20 | 3.0 | 14.214 h |
| June | 32.3°C16.0°C | 16.0°C | 3.6 | 0.8 | 14.715 h |
| July, selected | 35.1°C18.2°C | 18.2°C | 0.2 | 0.0 | 14.514 h |
| August | 34.1°C17.7°C | 17.7°C | 0.8 | 0.2 | 13.614 h |
| September | 31.3°C16.3°C | 16.3°C | 1.9 | 0.6 | 12.512 h |
| October | 25.5°C12.8°C | 12.8°C | 22 | 2.6 | 11.311 h |
| November | 18.3°C8.1°C | 8.1°C | 45 | 5.5 | 10.210 h |
| December | 13.7°C5.0°C | 5.0°C | 86 | 8.3 | 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
July in nearby cities
- Turlock in JulyUnited States · 21 kmHigh 35.7°C · Low 19.4°C · 0.4 mm rain
- Manteca in JulyUnited States · 26 kmHigh 33.4°C · Low 16.6°C · 0.1 mm rain
- Tracy in JulyUnited States · 39 kmHigh 33.6°C · Low 16.6°C · 0.7 mm rain
- Stockton in JulyUnited States · 44 kmHigh 32.8°C · Low 15.9°C · 0.2 mm rain
- Merced in JulyUnited States · 59 kmHigh 36.2°C · Low 20.2°C · 0.6 mm rain
- Livermore in JulyUnited States · 68 kmHigh 29.7°C · Low 14.7°C · 1.0 mm rain
- Pleasanton in JulyUnited States · 77 kmHigh 29.0°C · Low 14.7°C · 1.0 mm rain
- Antioch in JulyUnited States · 82 kmHigh 30.2°C · Low 15.1°C · 0.4 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 Modesto) is explained once on the Modesto year overview and on the Sources, method and limits page.