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Forecast confidence: Low · models disagree by 13°F

Vallejo weather

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Cloudy,much the same tomorrow

NWS, the American and the European model put Vallejo's high today between 68° and 80°, a 13° split. Tomorrow looks partly cloudy around 75°, with a 0% chance of rain, and the models disagree, so treat it as uncertain.

75°55°
75°57°
67°57°
68°58°
71°58°
83°59°
Todaysplit ±13°Tomorrowsplit ±10°Sundaysplit ±10°Mondaysplit ±10°Tuesdaysplit ±10°Wednesdaysplit ±16°
NWSNational Blend (NBM)
68°
Fog
Today 68°·Low 58°·Rain 0%
AmericanNOAA GFS
77°
Cloudy
Today 77°·Low 54°·Rain 0%
EuropeanECMWF
80°
Cloudy
Today 80°·Low 55°·Rain 0%
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Vallejo weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Vallejo…

Vallejo weather in numbers

from 30 years of measured normals

Vallejo swings 41°F across the year, from 83°F highs in July to 42°F lows in February, and January is usually the wettest month in a year that brings about 34 in of precipitation.

Warmest month
July
83°F average high
Coldest month
February
42°F average low
Wettest month
January
34 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
April, May, June and September
Residents
122,000
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The weather map: all three models at once

NWS, American, European side by side around Vallejo and nearby towns.Live rain radar →
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Vallejo hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Vallejo 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Cloudy
75° 55°
±13°
Tomorrow
Partly cloudy
75° 57°
±10°
Sun
Cloudy
67° 57°
±10°
Mon
Cloudy
68° 58°
±10°
Tue
Cloudy
71° 58°
±10°
Wed
Partly cloudy
83° 59°
±16°
Thu
Mostly clear
80° 62°
±20°
Fri
Mostly clear
72° 60°
±8°
Sat
Cloudy
74° 60°
±18°
Sun
Mostly clear
75° 60°
±18°
Mon
Mostly clear
76° 59°
±21°
Tue
Drizzle
77° 59°
±6°
Wed
Cloudy
79° 58°
±12°
Thu
Clear
77° 57°
±5°

Vallejo, California (CA) is at its warmest in Jul (average highs near 83°F) and coldest in Feb (lows around 42°F), with roughly 34 in of precipitation across the year. Below, compare what NWS, American, European forecast for Vallejo 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.

Vallejo climate by month

average daytime high and overnight low across a typical year
Jan
56°
44°
Feb
56°
42°
Mar
58°
44°
Apr
65°
47°
May
70°
52°
Jun
75°
55°
Jul
83°
57°
Aug
81°
59°
Sep
78°
57°
Oct
77°
55°
Nov
63°
47°
Dec
58°
46°

Which forecast is most accurate in Vallejo?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
89
/100rank #1
80±2.0°F94±1.9 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
87
/100rank #2
69±3.1°F96±1.3 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.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±13°68° to 80°models agree0% to 0% chance
Tomorrow±10°68° to 78°models agree0% to 0% chance
Sun±10°62° to 72°±1%0% to 1% chance
Mon±10°63° to 73°models agree0% to 0% chance
Tue±10°65° to 75°models agree0% to 0% 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 Vallejo

today, local time
Sunrise
06:53
Sunset
19:12
Daylight
12h 19m

Common questions

What's the weather in Vallejo today?
On this page we show what NWS, American, European each forecast for Vallejo 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 Vallejo today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Vallejo 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 Vallejo?
Over the last 30 days, the European model has been the most accurate for Vallejo (CheckWeather Score 89/100), ahead of the American at 87. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Vallejo?
July is typically the warmest month in Vallejo, with average highs around 83°F.
How cold does Vallejo get?
The coldest month in Vallejo is February, when overnight lows average about 42°F.
How much rain does Vallejo get?
Vallejo sees roughly 34 in of precipitation a year, with January usually the wettest month.

Nearby

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