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Forecast confidence: Medium · models disagree by 5°F

Vacaville weather

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Clear,much the same tomorrow

NWS, the American and the European model put Vacaville's high today between 83° and 88°, a 5° split. Tomorrow looks cloudy around 88°, with a 0% chance of rain.

85°56°
88°58°
81°60°
82°58°
87°58°
97°60°
Todaysplit ±5°Tomorrowsplit ±5°Sundaysplit ±15°Mondaysplit ±14°Tuesdaysplit ±14°Wednesdaysplit ±6°
NWSNational Blend (NBM)
88°
Clear
Today 88°·Low 58°·Rain 0%
AmericanNOAA GFS
85°
Clear
Today 85°·Low 54°·Rain 0%
EuropeanECMWF
83°
Clear
Today 83°·Low 55°·Rain 0%
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Vacaville weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Vacaville weather in numbers

from 30 years of measured normals

Vacaville swings 52°F across the year, from 93°F highs in July to 41°F lows in February, and January is usually the wettest month in a year that brings about 35 in of precipitation.

Warmest month
July
93°F average high
Coldest month
February
41°F average low
Wettest month
January
35 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
3 months
April, May and November
Residents
97,000
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The weather map: all three models at once

NWS, American, European side by side around Vacaville and nearby towns.Live rain radar →
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Vacaville 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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Vacaville 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Clear
85° 56°
±5°
Tomorrow
Cloudy
88° 58°
±5°
Sun
Cloudy
81° 60°
±15°
Mon
Cloudy
82° 58°
±14°
Tue
Clear
87° 58°
±14°
Wed
Clear
97° 60°
±6°
Thu
Mostly clear
95° 66°
±5°
Fri
Cloudy
84° 63°
±17°
Sat
Cloudy
85° 62°
±24°
Sun
Mostly clear
86° 61°
±13°
Mon
Clear
86° 59°
±8°
Tue
Light rain
87° 56°
±5°
Wed
Mostly clear
83° 55°
±12°
Thu
Clear
81° 55°
models agree

Vacaville, California (CA) is at its warmest in Jul (average highs near 93°F) and coldest in Feb (lows around 41°F), with roughly 35 in of precipitation across the year. Below, compare what NWS, American, European forecast for Vacaville 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.

Vacaville climate by month

average daytime high and overnight low across a typical year
Jan
56°
42°
Feb
56°
41°
Mar
58°
42°
Apr
69°
46°
May
76°
50°
Jun
84°
55°
Jul
93°
60°
Aug
90°
59°
Sep
85°
57°
Oct
80°
56°
Nov
63°
47°
Dec
58°
44°

Which forecast is most accurate in Vacaville?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
86±1.4°F95±1.5 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
83
/100rank #2
62±3.8°F94±2.0 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±5°83° to 88°models agree0% to 0% chance
Tomorrow±5°85° to 91°models agree0% to 0% chance
Sun±15°73° to 88°models agree0% to 0% chance
Mon±14°75° to 89°models agree0% to 0% chance
Tue±14°80° to 94°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 Vacaville

today, local time
Sunrise
06:52
Sunset
19:10
Daylight
12h 18m

Common questions

What's the weather in Vacaville today?
On this page we show what NWS, American, European each forecast for Vacaville 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 Vacaville today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Vacaville 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 Vacaville?
Over the last 30 days, the European model has been the most accurate for Vacaville (CheckWeather Score 93/100), ahead of the American at 83. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Vacaville?
July is typically the warmest month in Vacaville, with average highs around 93°F.
How cold does Vacaville get?
The coldest month in Vacaville is February, when overnight lows average about 41°F.
How much rain does Vacaville get?
Vacaville sees roughly 35 in of precipitation a year, with January usually the wettest month.

Nearby

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