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CheckWeather USGarden Grove
Forecast confidence: Low · models disagree by 8°F

Garden Grove weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model put Garden Grove's high today between 82° and 90°, a 8° split. Tomorrow looks drizzle around 80°, with a 92% chance of rain, and the models disagree, so treat it as uncertain.

86°64°
80°71°
89°70°
90°73°
93°75°
89°76°
Todaysplit ±8°Tomorrowsplit ±11°Mondaysplit ±11°Tuesdaysplit ±11°Wednesdaysplit ±7°Thursdaysplit ±10°
NWSNational Blend (NBM)
85°
Mostly clear
Today 85°·Low 65°·Rain 1%
AmericanNOAA GFS
90°
Partly cloudy
Today 90°·Low 63°·Rain 1%
EuropeanECMWF
82°
Clear
Today 82°·Low 65°·Rain 31%

The weather map: all three models at once

NWS, American, European side by side around Garden Grove 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
86° 64°
±8°
Tomorrow
Drizzle
80° 71°
±11°
Mon
Mostly clear
89° 70°
±11°
Tue
Cloudy
90° 73°
±11°
Wed
Mostly clear
93° 75°
±7°
Thu
Mostly clear
89° 76°
±10°
Fri
Mostly clear
85° 73°
±6°
Sat
Mostly clear
81° 70°
±5°
Sun
Mostly clear
82° 69°
models agree
Mon
Clear
81° 69°
±6°
Tue
Light drizzle
84° 69°
±15°
Wed
Drizzle
84° 72°
±10°
Thu
Light drizzle
82° 71°
models agree
Fri
Mostly clear
83° 71°
models agree

Garden Grove, CA is at its warmest in Aug (average highs near 83°F) and coldest in Jan (lows around 47°F), with roughly 23 in of precipitation across the year. Below, compare what NWS, American, European forecast for Garden Grove 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.

Garden Grove climate by month

average daytime high and overnight low across a typical year
Jan
62°
47°
Feb
63°
47°
Mar
63°
49°
Apr
69°
52°
May
70°
56°
Jun
75°
59°
Jul
82°
62°
Aug
83°
64°
Sep
81°
63°
Oct
80°
59°
Nov
73°
53°
Dec
68°
51°

Which forecast is most accurate in Garden Grove?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
American logo
American ★ Best
91
/100rank #1
81±1.9°F95±1.5 mph100100% hitNOAA / NCEP (United States)College Park, Maryland, USA
European logo
European
82
/100rank #2
57±4.3°F98±0.5 mph100100% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±8°82° to 90°±30%1% to 31% chance
Tomorrow±11°75° to 86°±52%40% to 92% chance
Mon±11°84° to 95°±15%4% to 19% chance
Tue±11°85° to 96°±3%7% to 10% chance
Wed±7°90° to 98°models agree10% to 10% 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 Garden Grove

today, local time
Sunrise
06:28
Sunset
19:12
Daylight
12h 44m

Common questions

What's the weather in Garden Grove today?
On this page we show what NWS, American, European each forecast for Garden Grove 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 Garden Grove today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Garden Grove 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 Garden Grove?
Over the last 30 days, the American model has been the most accurate for Garden Grove (CheckWeather Score 91/100), ahead of the European at 82. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Garden Grove?
August is typically the warmest month in Garden Grove, with average highs around 83°F.
How cold does Garden Grove get?
The coldest month in Garden Grove is January, when overnight lows average about 47°F.
How much rain does Garden Grove get?
Garden Grove sees roughly 23 in of precipitation a year, with February usually the wettest month.

Nearby

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