Spring
70°F / 45°F
March, April, May: about 3.9 in of rain.
Plan a visit
Best time to visit San Ramon
May, June, October bring mild highs and the least rain.
San Ramon by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Good | 57°F / 38°F | 2.8 in | |
| February | Wet | 61°F / 40°F | 2.9 in | Valentine’s Day |
| March | Great | 65°F / 42°F | 2.2 in | St. Patrick’s Day |
| April | Great | 69°F / 45°F | 1.1 in | |
| May | Great | 75°F / 49°F | 0.60 in | |
| June | Great | 83°F / 54°F | 0.10 in | Fourth of July |
| July | Good | 88°F / 57°F | 0.00 in | Fourth of July |
| August | Good | 88°F / 57°F | 0.10 in | |
| September | Good | 85°F / 55°F | 0.10 in | Halloween |
| October | Great | 78°F / 49°F | 0.80 in | Halloween |
| November | Great | 66°F / 42°F | 1.7 in | Halloween, Thanksgiving, Christmas |
| December | Good | 58°F / 38°F | 2.8 in | Christmas, New Year’s Eve |
“Great” means highs between 65°F and 85°F with fewer than 10 wet days. Averages are NOAA’s 1991–2020 normals for the Livermore Muni Ap station, not a forecast.
Questions
What is the best month to visit San Ramon?
May, June, October: highs between 65°F and 85°F with the least rain.
What is the hottest month in San Ramon?
July, averaging 88°F highs.
What is the coldest month in San Ramon?
December, with average lows of 38°F.
What is the rainiest month in San Ramon?
February, averaging 2.9 in of precipitation.
When are the big holidays in San Ramon?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.