Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USVallejo
Forecast confidence: Low · models disagree by 15°F

Vallejo weather

Loading live data…

Cloudy,much the same tomorrow

NWS, the American and the European model put Vallejo's high today between 65° and 80°, a 15° split. Tomorrow looks mostly clear around 73°, with a 0% chance of rain, and the models disagree, so treat it as uncertain.

74°54°
73°55°
80°55°
83°61°
91°67°
86°69°
Todaysplit ±15°Tomorrowsplit ±13°Mondaysplit ±18°Tuesdaysplit ±19°Wednesdaysplit ±20°Thursdaysplit ±21°
NWSNational Blend (NBM)
65°
Mostly clear
Today 65°·Low 55°·Rain 0%
AmericanNOAA GFS
80°
Cloudy
Today 80°·Low 54°·Rain 0%
EuropeanECMWF
77°
Cloudy
Today 77°·Low 55°·Rain 0%

The weather map: all three models at once

NWS, American, European side by side around Vallejo 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
Cloudy
74° 54°
±15°
Tomorrow
Mostly clear
73° 55°
±13°
Mon
Mostly clear
80° 55°
±18°
Tue
Cloudy
83° 61°
±19°
Wed
Cloudy
91° 67°
±20°
Thu
Mostly clear
86° 69°
±21°
Fri
Clear
74° 62°
±10°
Sat
Partly cloudy
71° 60°
±10°
Sun
Partly cloudy
71° 59°
±12°
Mon
Mostly clear
73° 60°
±16°
Tue
Mostly clear
75° 59°
±17°
Wed
Cloudy
85° 59°
±9°
Thu
Partly cloudy
81° 60°
models agree
Fri
Clear
77° 58°
models agree

Vallejo, 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 Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
92
/100rank #1
83±1.7°F96±1.4 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
86
/100rank #2
68±3.2°F95±1.4 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±15°65° to 80°models agree0% to 0% chance
Tomorrow±13°65° to 77°models agree0% to 0% chance
Mon±18°69° to 87°models agree0% to 0% chance
Tue±19°71° to 91°models agree2% to 2% chance
Wed±20°78° to 98°±2%4% to 6% 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
06:42
Sunset
19:32
Daylight
12h 50m

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 92/100), ahead of the American at 86. 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

More US weather