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CheckWeather USSan Juan Capistrano

San Juan Capistrano weather

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San Juan Capistrano weather alerts and warnings

active National Weather Service watches, warnings and advisories

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San Juan Capistrano weather in numbers

from 30 years of measured normals

San Juan Capistrano swings 35°F across the year, from 81°F highs in August to 46°F lows in February, and February is usually the wettest month in a year that brings about 24 in of precipitation.

Warmest month
August
81°F average high
Coldest month
February
46°F average low
Wettest month
February
24 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
January, March, April and May
Residents
36,000
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The weather map: all three models at once

NWS, American, European side by side around San Juan Capistrano and nearby towns.Live rain radar →
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San Juan Capistrano hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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San Juan Capistrano 10-day forecast, out to 14 days

where the models agree, and where they split

San Juan Capistrano, California (CA) is at its warmest in Aug (average highs near 81°F) and coldest in Feb (lows around 46°F), with roughly 24 in of precipitation across the year. Below, compare what NWS, American, European forecast for San Juan Capistrano right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

San Juan Capistrano climate by month

average daytime high and overnight low across a typical year
Jan
61°
47°
Feb
61°
46°
Mar
61°
48°
Apr
66°
50°
May
67°
55°
Jun
72°
58°
Jul
79°
62°
Aug
81°
64°
Sep
79°
63°
Oct
78°
58°
Nov
71°
51°
Dec
67°
49°

Which forecast is most accurate in San Juan Capistrano?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
American logo
American ★ Best
86
/100rank #1
72±2.8°F95±1.7 mph9597% hitNOAA / NCEP (United States)College Park, Maryland, USA
European logo
European
78
/100rank #2
50±5.0°F97±0.9 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in San Juan Capistrano today?
On this page we show what NWS, American, European each forecast for San Juan Capistrano 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 Juan Capistrano today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for San Juan Capistrano 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 Juan Capistrano?
Over the last 30 days, the American model has been the most accurate for San Juan Capistrano (CheckWeather Score 86/100), ahead of the European at 78. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in San Juan Capistrano?
August is typically the warmest month in San Juan Capistrano, with average highs around 81°F.
How cold does San Juan Capistrano get?
The coldest month in San Juan Capistrano is February, when overnight lows average about 46°F.
How much rain does San Juan Capistrano get?
San Juan Capistrano sees roughly 24 in of precipitation a year, with February usually the wettest month.

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