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CheckWeather USSanta Ana
Forecast confidence: High · models disagree by 3°F

Santa Ana weather

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Cloudy,much the same tomorrow

NWS, the American and the European model agree on a high near 80° in Santa Ana today. Tomorrow looks cloudy around 81°, with a 0% chance of rain.

80°64°
81°63°
81°66°
78°66°
80°66°
84°68°
Todaymodels agreeTomorrowsplit ±5°Sundaysplit ±5°Mondaysplit ±5°Tuesdaysplit ±5°Wednesdaysplit ±8°
NWSNational Blend (NBM)
78°
Mostly clear
Today 78°·Low 65°·Rain 0%
AmericanNOAA GFS
80°
Cloudy
Today 80°·Low 65°·Rain 0%
EuropeanECMWF
81°
Cloudy
Today 81°·Low 63°·Rain 0%
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Santa Ana weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Santa Ana weather in numbers

from 30 years of measured normals

Santa Ana swings 39°F across the year, from 86°F highs in August to 47°F lows in January, and February is usually the wettest month in a year that brings about 21 in of precipitation.

Warmest month
August
86°F average high
Coldest month
January
47°F average low
Wettest month
February
21 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
January, March, April and May
Residents
310,000
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The weather map: all three models at once

NWS, American, European side by side around Santa Ana and nearby towns.Live rain radar →
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Santa Ana 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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Santa Ana 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Cloudy
80° 64°
models agree
Tomorrow
Cloudy
81° 63°
±5°
Sun
Cloudy
81° 66°
±5°
Mon
Partly cloudy
78° 66°
±5°
Tue
Partly cloudy
80° 66°
±5°
Wed
Mostly clear
84° 68°
±8°
Thu
Clear
83° 68°
models agree
Fri
Mostly clear
85° 69°
±11°
Sat
Partly cloudy
87° 70°
±15°
Sun
Cloudy
91° 73°
±16°
Mon
Mostly clear
89° 74°
±16°
Tue
Cloudy
91° 76°
models agree
Wed
Clear
82° 69°
±6°
Thu
Clear
79° 67°
±5°

Santa Ana, California (CA) is at its warmest in Aug (average highs near 86°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 Santa Ana 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.

Santa Ana climate by month

average daytime high and overnight low across a typical year
Jan
63°
47°
Feb
63°
47°
Mar
63°
48°
Apr
71°
51°
May
72°
55°
Jun
77°
58°
Jul
85°
61°
Aug
86°
64°
Sep
83°
63°
Oct
82°
58°
Nov
74°
53°
Dec
69°
50°

Which forecast is most accurate in Santa Ana?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
91
/100rank #1
80±2.0°F97±0.9 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
88
/100rank #2
84±1.6°F91±2.7 mph8994% hitNOAA / NCEP (United States)College Park, Maryland, USA

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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°78° to 81°models agree0% to 0% chance
Tomorrow±5°80° to 84°models agree0% to 0% chance
Sun±5°78° to 83°±1%1% to 2% chance
Mon±5°76° to 80°±4%2% to 6% chance
Tue±5°77° to 82°±1%0% to 1% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Santa Ana

today, local time
Sunrise
06:37
Sunset
18:53
Daylight
12h 16m

Common questions

What's the weather in Santa Ana today?
On this page we show what NWS, American, European each forecast for Santa Ana 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 Santa Ana today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Santa Ana 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 Santa Ana?
Over the last 30 days, the European model has been the most accurate for Santa Ana (CheckWeather Score 91/100), ahead of the American at 88. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Santa Ana?
August is typically the warmest month in Santa Ana, with average highs around 86°F.
How cold does Santa Ana get?
The coldest month in Santa Ana is January, when overnight lows average about 47°F.
How much rain does Santa Ana get?
Santa Ana sees roughly 21 in of precipitation a year, with February usually the wettest month.

Nearby

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