NWS, American, European side by side around Chula Vista and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Chula Vista, CA is at its warmest in Aug (average highs near 78°F) and coldest in Jan (lows around 47°F), with roughly 21 in of precipitation across the year. Below, compare what NWS, American, European forecast for Chula Vista right now, and see exactly where they disagree.
Chula Vista climate by month
average daytime high and overnight low across a typical year
Jan
62°
47°
Feb
62°
48°
Mar
62°
50°
Apr
65°
52°
May
67°
57°
Jun
71°
60°
Jul
76°
64°
Aug
78°
65°
Sep
76°
64°
Oct
75°
58°
Nov
71°
51°
Dec
66°
49°
Common questions
What's the weather in Chula Vista today?
On this page we show what NWS, American, European each forecast for Chula Vista 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 Chula Vista today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Chula Vista 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 Chula Vista?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Chula Vista 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 Chula Vista?
Aug is typically the warmest month in Chula Vista, with average highs around 78°F.
How cold does Chula Vista get?
The coldest month in Chula Vista is Jan, when overnight lows average about 47°F.
How much rain does Chula Vista get?
Chula Vista sees roughly 21 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.