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CheckWeather USSanta Ana
Forecast confidence: Medium · models disagree by 7°F

Santa Ana weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model put Santa Ana's high today between 86° and 93°, a 7° split. Tomorrow looks heavy drizzle around 82°, with a 94% chance of rain, and the models disagree, so treat it as uncertain.

89°64°
82°72°
91°72°
93°75°
97°77°
94°78°
Todaysplit ±7°Tomorrowsplit ±8°Mondaysplit ±7°Tuesdaysplit ±7°Wednesdaysplit ±10°Thursdaysplit ±11°
NWSNational Blend (NBM)
86°
Mostly clear
Today 86°·Low 65°·Rain 1%
AmericanNOAA GFS
90°
Partly cloudy
Today 90°·Low 63°·Rain 1%
EuropeanECMWF
93°
Light drizzle
Today 93°·Low 64°·Rain 49%

The weather map: all three models at once

NWS, American, European side by side around Santa Ana and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Mostly clear
89° 64°
±7°
Tomorrow
Heavy drizzle
82° 72°
±8°
Mon
Light drizzle
91° 72°
±7°
Tue
Cloudy
93° 75°
±7°
Wed
Mostly clear
97° 77°
±10°
Thu
Clear
94° 78°
±11°
Fri
Clear
88° 73°
±6°
Sat
Mostly clear
83° 70°
models agree
Sun
Mostly clear
84° 69°
±8°
Mon
Clear
85° 69°
±5°
Tue
Light drizzle
87° 69°
±10°
Wed
Drizzle
89° 73°
models agree
Thu
Light drizzle
86° 72°
±8°
Fri
Mostly clear
87° 72°
±13°

Santa Ana, 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 Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
91
/100rank #1
79±2.1°F97±0.9 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
91
/100rank #2
83±1.7°F92±2.6 mph100100% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±7°86° to 93°±48%1% to 49% chance
Tomorrow±8°78° to 87°±54%40% to 94% chance
Mon±7°88° to 95°±22%4% to 26% chance
Tue±7°89° to 96°±3%7% to 10% chance
Wed±10°92° to 102°±5%4% to 9% 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
06:28
Sunset
19:11
Daylight
12h 43m

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 91. 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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