NWS, American, European side by side around San Ramon and nearby towns.Live rain radar →
Loading the three model maps…
Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
San Ramon, CA is at its warmest in Jul (average highs near 81°F) and coldest in Feb (lows around 40°F), with roughly 35 in of precipitation across the year. Below, compare what NWS, American, European forecast for San Ramon right now, and see exactly where they disagree.
San Ramon climate by month
average daytime high and overnight low across a typical year
Jan
57°
42°
Feb
57°
40°
Mar
57°
42°
Apr
64°
44°
May
68°
49°
Jun
73°
52°
Jul
81°
55°
Aug
79°
56°
Sep
77°
55°
Oct
77°
53°
Nov
64°
44°
Dec
60°
43°
Common questions
What's the weather in San Ramon today?
On this page we show what NWS, American, European each forecast for San Ramon today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in San Ramon today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for San Ramon and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for San Ramon?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the San Ramon forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in San Ramon?
Jul is typically the warmest month in San Ramon, with average highs around 81°F.
How cold does San Ramon get?
The coldest month in San Ramon is Feb, when overnight lows average about 40°F.
How much rain does San Ramon get?
San Ramon sees roughly 35 in of precipitation a year, with Jan usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.