San Ramon, CA Weather
San Ramon, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.
The warmest month of the year is July with an average maximum temperature of 85.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 39.30 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 26 degrees Fahrenheit, and fairly limited during winter with an average difference of 16 degrees Fahrenheit.
The annual average precipitation at San Ramon is 23.96 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 4.76 Inches.
Weather Data
Current Conditions
|
Fair, 45°F | Humidity: 77% | Dewpoint: 38°F |
| Wind Speed: CALM | Heat Index: 45°F | ||
| Barometer: 30.18 in. | Wind Chill: 45°F |
Weather Forecast
| Tonight: Partly cloudy. Lows in the mid 40s. West winds 5 to 10 mph...Becoming southwest after midnight. | |
| Lo: 45°F | ||
 | Hi: 70°F | Sunday: Partly cloudy in the morning then becoming mostly sunny. Highs around 70. West winds 5 to 10 mph. |
| Lo: 45°F | ||
 | Hi: 71°F | Monday: Partly cloudy. Patchy fog in the morning. Highs in the lower 70s. Northwest winds 5 to 10 mph. |
| Lo: 45°F | ||
 | Hi: 71°F | Tuesday: Mostly sunny. Highs in the lower 70s. |
| Lo: 49°F | ||
| Hi: 66°F | Wednesday: Mostly clear. Lows in the upper 40s. Highs in the mid 60s to lower 70s. |
| Lo: 49°F | ||
| Hi: 66°F | Wednesday: Mostly clear. Lows in the upper 40s. Highs in the mid 60s to lower 70s. |
| Lo: 49°F | ||
| Hi: 69°F | Thursday: Partly cloudy. Highs in the upper 60s. Lows in the upper 40s. |
| Lo: 49°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Crescent Moon | Civil Twilight: 6:43 AM PDT |
Sunrise: 7:09 AM PDT |
| Sunset: 7:20 PM PDT |
Civil Twilight: 7:47 PM PDT |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 55.6 | 57.2 | 59.2 | 64.8 | 70.8 | 78.7 | 85.2 | 85.1 | 82.2 | 74.4 | 61.9 | 56.2 | 69.3 |
| Mean °F | 47.5 | 49.0 | 50.0 | 54.1 | 59.1 | 66.0 | 72.4 | 72.3 | 69.9 | 63.1 | 52.8 | 48.0 | 58.7 |
| Min °F | 39.3 | 40.7 | 40.7 | 43.3 | 47.4 | 53.2 | 59.6 | 59.5 | 57.5 | 51.8 | 43.7 | 39.7 | 48.0 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.76 | 4.49 | 3.83 | 1.46 | 0.85 | 0.15 | 0.05 | 0.08 | 0.36 | 1.31 | 3.27 | 3.35 | 23.96 |
