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CheckWeather USRialto
Forecast confidence: Medium · models disagree by 5°F

Rialto weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model put Rialto's high today between 89° and 95°, a 5° split. Tomorrow looks light rain around 80°, with a 97% chance of rain.

92°62°
80°70°
92°69°
94°74°
101°78°
100°80°
Todaysplit ±5°Tomorrowmodels agreeMondaysplit ±7°Tuesdaysplit ±7°Wednesdaysplit ±8°Thursdaysplit ±7°
NWSNational Blend (NBM)
89°
Mostly clear
Today 89°·Low 65°·Rain 0%
AmericanNOAA GFS
93°
Mostly clear
Today 93°·Low 60°·Rain 0%
EuropeanECMWF
95°
Light drizzle
Today 95°·Low 62°·Rain 45%

The weather map: all three models at once

NWS, American, European side by side around Rialto and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Mostly clear
92° 62°
±5°
Tomorrow
Light rain
80° 70°
models agree
Mon
Partly cloudy
92° 69°
±7°
Tue
Cloudy
94° 74°
±7°
Wed
Mostly clear
101° 78°
±8°
Thu
Clear
100° 80°
±7°
Fri
Clear
95° 77°
models agree
Sat
Clear
89° 71°
models agree
Sun
Clear
91° 69°
±8°
Mon
Clear
93° 72°
±6°
Tue
Light drizzle
95° 74°
±13°
Wed
Cloudy
97° 78°
models agree
Thu
Light drizzle
92° 74°
±8°
Fri
Clear
91° 73°
±12°

Rialto, CA is at its warmest in Jul (average highs near 98°F) and coldest in Jan (lows around 42°F), with roughly 29 in of precipitation across the year. Below, compare what NWS, American, European forecast for Rialto 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.

Rialto climate by month

average daytime high and overnight low across a typical year
Jan
59°
42°
Feb
59°
42°
Mar
60°
44°
Apr
72°
48°
May
76°
52°
Jun
84°
59°
Jul
98°
70°
Aug
95°
69°
Sep
88°
63°
Oct
84°
58°
Nov
70°
48°
Dec
68°
47°

Which forecast is most accurate in Rialto?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
95
/100rank #1
91±0.9°F95±1.4 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
92
/100rank #2
90±1.0°F89±3.5 mph9597% 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±5°89° to 95°±45%0% to 45% chance
Tomorrow±3°78° to 82°±47%50% to 97% chance
Mon±7°89° to 96°±16%4% to 20% chance
Tue±7°92° to 99°±2%8% to 10% chance
Wed±8°96° to 104°±1%11% to 12% 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 Rialto

today, local time
Sunrise
06:26
Sunset
19:10
Daylight
12h 44m

Common questions

What's the weather in Rialto today?
On this page we show what NWS, American, European each forecast for Rialto 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 Rialto today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Rialto 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 Rialto?
Over the last 30 days, the European model has been the most accurate for Rialto (CheckWeather Score 95/100), ahead of the American at 92. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Rialto?
July is typically the warmest month in Rialto, with average highs around 98°F.
How cold does Rialto get?
The coldest month in Rialto is January, when overnight lows average about 42°F.
How much rain does Rialto get?
Rialto sees roughly 29 in of precipitation a year, with February usually the wettest month.

Nearby

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