Climate averages 1991–2020
Redwood City weather
in July.
A warm, very dry month: the 3rd warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Redwood City: daytime highs average 24.2°C and nights cool to about 13.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
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 San Mateo (12 km away). In July its highs average 23.2°C, 1.0°C cooler than Redwood City, with almost no rain (under 1 mm).
Among the 498 cities listed in the United States, Redwood City ranks joint 480th of 498 for the warmest July highs and joint 21st of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Redwood City is 6.1°C cooler than that mean.
From July to August, average highs rise by 0.3°C to 24.5°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
Redwood City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.1°C6.9°C | 6.9°C | 99 | 9.4 | 9.910 h |
| February | 14.9°C7.6°C | 7.6°C | 107 | 9.5 | 10.811 h |
| March | 16.2°C8.6°C | 8.6°C | 82 | 9.1 | 11.912 h |
| April | 17.6°C9.4°C | 9.4°C | 41 | 5.6 | 13.113 h |
| May | 19.8°C10.9°C | 10.9°C | 20 | 3.3 | 14.214 h |
| June | 22.5°C12.4°C | 12.4°C | 3.9 | 0.9 | 14.715 h |
| July, selected | 24.2°C13.9°C | 13.9°C | 0.5 | 0.2 | 14.514 h |
| August | 24.5°C14.4°C | 14.4°C | 0.7 | 0.1 | 13.614 h |
| September | 24.6°C14.5°C | 14.5°C | 1.8 | 0.4 | 12.512 h |
| October | 22.1°C13.1°C | 13.1°C | 23 | 3.0 | 11.311 h |
| November | 17.2°C10.1°C | 10.1°C | 51 | 6.0 | 10.210 h |
| December | 13.8°C7.5°C | 7.5°C | 94 | 9.3 | 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
- San Mateo in JulyUnited States · 12 kmHigh 23.2°C · Low 13.7°C · 0.5 mm rain
- Mountain View in JulyUnited States · 17 kmHigh 26.0°C · Low 14.4°C · 0.9 mm rain
- Sunnyvale in JulyUnited States · 22 kmHigh 26.9°C · Low 14.5°C · 0.8 mm rain
- Union City in JulyUnited States · 23 kmHigh 27.9°C · Low 14.8°C · 0.9 mm rain
- Fremont in JulyUnited States · 23 kmHigh 27.5°C · Low 14.8°C · 0.9 mm rain
- Hayward in JulyUnited States · 25 kmHigh 26.5°C · Low 14.1°C · 0.7 mm rain
- Milpitas in JulyUnited States · 30 kmHigh 28.5°C · Low 15.3°C · 0.9 mm rain
- Daly City in JulyUnited States · 32 kmHigh 19.0°C · Low 12.1°C · 0.3 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 Redwood City) is explained once on the Redwood City year overview and on the Sources, method and limits page.
San Mateo lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.