CheckWeather US›San Bruno
San Bruno weather
Loading live data…The weather map: all three models at once
NWS, American, European side by side around San Bruno and nearby towns.Live rain radar →Loading the three model maps…
Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitSan Bruno, CA is at its warmest in Oct (average highs near 71°F) and coldest in Feb (lows around 44°F), with roughly 31 in of precipitation across the year. Below, compare what NWS, American, European forecast for San Bruno right now, and see exactly where they disagree.
San Bruno climate by month
average daytime high and overnight low across a typical yearJan
56°
46°
Feb
55°
44°
Mar
55°
46°
Apr
58°
47°
May
62°
50°
Jun
64°
52°
Jul
69°
54°
Aug
68°
56°
Sep
69°
56°
Oct
71°
55°
Nov
61°
49°
Dec
58°
48°
Which forecast is most accurate in the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
Common questions
What's the weather in San Bruno today?
On this page we show what NWS, American, European each forecast for San Bruno 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 Bruno today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for San Bruno 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 Bruno?
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 Bruno 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 Bruno?
Oct is typically the warmest month in San Bruno, with average highs around 71°F.
How cold does San Bruno get?
The coldest month in San Bruno is Feb, when overnight lows average about 44°F.
How much rain does San Bruno get?
San Bruno sees roughly 31 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.