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Every US forecast, compared
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CheckWeather USRiverside
Forecast confidence: Medium · models disagree by 6°F

Riverside weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model put Riverside's high today between 90° and 96°, a 6° split. Tomorrow looks light rain around 80°, with a 95% chance of rain.

93°62°
80°71°
93°70°
95°75°
102°79°
101°80°
Todaysplit ±6°Tomorrowsplit ±5°Mondaysplit ±8°Tuesdaysplit ±8°Wednesdaysplit ±9°Thursdaysplit ±8°
NWSNational Blend (NBM)
90°
Mostly clear
Today 90°·Low 65°·Rain 1%
AmericanNOAA GFS
96°
Mostly clear
Today 96°·Low 59°·Rain 1%
EuropeanECMWF
94°
Light drizzle
Today 94°·Low 63°·Rain 45%

The weather map: all three models at once

NWS, American, European side by side around Riverside 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
93° 62°
±6°
Tomorrow
Light rain
80° 71°
±5°
Mon
Cloudy
93° 70°
±8°
Tue
Cloudy
95° 75°
±8°
Wed
Cloudy
102° 79°
±9°
Thu
Clear
101° 80°
±8°
Fri
Clear
95° 77°
models agree
Sat
Clear
89° 71°
models agree
Sun
Clear
91° 69°
±6°
Mon
Clear
92° 72°
±7°
Tue
Light drizzle
94° 73°
±13°
Wed
Cloudy
97° 77°
models agree
Thu
Light drizzle
94° 75°
±6°
Fri
Clear
92° 74°
±9°

Riverside, CA is at its warmest in Jul (average highs near 97°F) and coldest in Jan (lows around 42°F), with roughly 22 in of precipitation across the year. Below, compare what NWS, American, European forecast for Riverside 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.

Riverside climate by month

average daytime high and overnight low across a typical year
Jan
62°
42°
Feb
62°
43°
Mar
63°
45°
Apr
74°
48°
May
78°
53°
Jun
85°
58°
Jul
97°
65°
Aug
95°
66°
Sep
89°
62°
Oct
86°
57°
Nov
73°
48°
Dec
70°
46°

Which forecast is most accurate in Riverside?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
95
/100rank #1
94±0.6°F97±1.0 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
92
/100rank #2
88±1.2°F95±1.6 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±6°90° to 96°±44%1% to 45% chance
Tomorrow±5°78° to 83°±52%43% to 95% chance
Mon±8°90° to 98°±12%5% to 17% chance
Tue±8°92° to 100°±1%9% to 10% chance
Wed±9°97° to 106°±8%10% to 18% 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 Riverside

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

Common questions

What's the weather in Riverside today?
On this page we show what NWS, American, European each forecast for Riverside 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 Riverside today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Riverside 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 Riverside?
Over the last 30 days, the European model has been the most accurate for Riverside (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 Riverside?
July is typically the warmest month in Riverside, with average highs around 97°F.
How cold does Riverside get?
The coldest month in Riverside is January, when overnight lows average about 42°F.
How much rain does Riverside get?
Riverside sees roughly 22 in of precipitation a year, with February usually the wettest month.

Nearby

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