Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USTustin
Forecast confidence: Medium · models disagree by 6°F

Tustin weather

Loading live data…

Mostly clear,rain likely tomorrow

NWS, the American and the European model put Tustin's high today between 86° and 93°, a 6° split. Tomorrow looks light rain around 82°, with a 94% chance of rain, and the models disagree, so treat it as uncertain.

90°64°
82°72°
92°72°
93°75°
98°78°
96°78°
Todaysplit ±6°Tomorrowsplit ±9°Mondaysplit ±8°Tuesdaysplit ±7°Wednesdaysplit ±9°Thursdaysplit ±10°
NWSNational Blend (NBM)
86°
Mostly clear
Today 86°·Low 65°·Rain 1%
AmericanNOAA GFS
91°
Partly cloudy
Today 91°·Low 62°·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 Tustin 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
90° 64°
±6°
Tomorrow
Light rain
82° 72°
±9°
Mon
Light drizzle
92° 72°
±8°
Tue
Cloudy
93° 75°
±7°
Wed
Mostly clear
98° 78°
±9°
Thu
Clear
96° 78°
±10°
Fri
Clear
89° 74°
±5°
Sat
Mostly clear
84° 70°
models agree
Sun
Mostly clear
86° 69°
models agree
Mon
Clear
86° 69°
±5°
Tue
Light drizzle
89° 70°
±13°
Wed
Light drizzle
90° 74°
±4°
Thu
Mostly clear
87° 72°
±6°
Fri
Mostly clear
88° 72°
±11°

Tustin, CA is at its warmest in Jul (average highs near 84°F) and coldest in Feb (lows around 46°F), with roughly 23 in of precipitation across the year. Below, compare what NWS, American, European forecast for Tustin 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.

Tustin climate by month

average daytime high and overnight low across a typical year
Jan
63°
47°
Feb
63°
46°
Mar
63°
48°
Apr
70°
51°
May
71°
55°
Jun
76°
58°
Jul
84°
61°
Aug
84°
62°
Sep
82°
62°
Oct
81°
58°
Nov
74°
52°
Dec
68°
50°

Which forecast is most accurate in Tustin?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
American logo
American ★ Best
88
/100rank #1
75±2.5°F93±2.2 mph100100% hitNOAA / NCEP (United States)College Park, Maryland, USA
European logo
European
84
/100rank #2
62±3.8°F98±0.7 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±6°86° to 93°±48%1% to 49% chance
Tomorrow±9°78° to 87°±54%40% to 94% chance
Mon±8°89° to 97°±22%4% to 26% chance
Tue±7°90° to 97°±3%7% to 10% chance
Wed±9°93° 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 Tustin

today, local time
Sunrise
06:28
Sunset
19:11
Daylight
12h 43m

Common questions

What's the weather in Tustin today?
On this page we show what NWS, American, European each forecast for Tustin 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 Tustin today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Tustin 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 Tustin?
Over the last 30 days, the American model has been the most accurate for Tustin (CheckWeather Score 88/100), ahead of the European at 84. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Tustin?
July is typically the warmest month in Tustin, with average highs around 84°F.
How cold does Tustin get?
The coldest month in Tustin is February, when overnight lows average about 46°F.
How much rain does Tustin get?
Tustin sees roughly 23 in of precipitation a year, with February usually the wettest month.

Nearby

More US weather