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Forecast confidence: High · models disagree by 2°F

Walnut Creek weather

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Clear,much the same tomorrow

NWS, the American and the European model agree on a high near 82° in Walnut Creek today. Tomorrow looks cloudy around 84°, with a 0% chance of rain.

82°55°
84°57°
75°57°
77°57°
82°57°
94°58°
Todaymodels agreeTomorrowmodels agreeSundaysplit ±10°Mondaysplit ±7°Tuesdaysplit ±7°Wednesdaymodels agree
NWSNational Blend (NBM)
82°
Clear
Today 82°·Low 56°·Rain 0%
AmericanNOAA GFS
81°
Fog
Today 81°·Low 55°·Rain 0%
EuropeanECMWF
83°
Cloudy
Today 83°·Low 54°·Rain 0%
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Walnut Creek weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Walnut Creek weather in numbers

from 30 years of measured normals

Walnut Creek swings 47°F across the year, from 89°F highs in July to 42°F lows in February, and January is usually the wettest month in a year that brings about 27 in of precipitation.

Warmest month
July
89°F average high
Coldest month
February
42°F average low
Wettest month
January
27 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
3 months
April, May and November
Residents
69,000
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Clear
82° 55°
models agree
Tomorrow
Cloudy
84° 57°
models agree
Sun
Cloudy
75° 57°
±10°
Mon
Cloudy
77° 57°
±7°
Tue
Mostly clear
82° 57°
±7°
Wed
Mostly clear
94° 58°
models agree
Thu
Mostly clear
90° 63°
±14°
Fri
Mostly clear
82° 62°
±10°
Sat
Cloudy
82° 60°
±16°
Sun
Mostly clear
82° 58°
±10°
Mon
Mostly clear
83° 57°
±9°
Tue
Light drizzle
83° 58°
±13°
Wed
Cloudy
79° 57°
±18°
Thu
Clear
79° 55°
models agree

Walnut Creek, California (CA) is at its warmest in Jul (average highs near 89°F) and coldest in Feb (lows around 42°F), with roughly 27 in of precipitation across the year. Below, compare what NWS, American, European forecast for Walnut Creek 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.

Walnut Creek climate by month

average daytime high and overnight low across a typical year
Jan
57°
44°
Feb
58°
42°
Mar
59°
44°
Apr
68°
46°
May
73°
51°
Jun
80°
55°
Jul
89°
60°
Aug
86°
60°
Sep
82°
58°
Oct
80°
57°
Nov
64°
48°
Dec
59°
46°

Which forecast is most accurate in Walnut Creek?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
94
/100rank #1
91±0.9°F97±0.8 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
89
/100rank #2
76±2.4°F96±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.

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±2°81° to 83°models agree0% to 0% chance
Tomorrow±1°84° to 85°models agree0% to 0% chance
Sun±10°70° to 80°models agree0% to 0% chance
Mon±7°73° to 80°models agree0% to 0% chance
Tue±7°79° to 86°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 Walnut Creek

today, local time
Sunrise
06:52
Sunset
19:11
Daylight
12h 19m

Common questions

What's the weather in Walnut Creek today?
On this page we show what NWS, American, European each forecast for Walnut Creek 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 Walnut Creek today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Walnut Creek 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 Walnut Creek?
Over the last 30 days, the European model has been the most accurate for Walnut Creek (CheckWeather Score 94/100), ahead of the American at 89. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Walnut Creek?
July is typically the warmest month in Walnut Creek, with average highs around 89°F.
How cold does Walnut Creek get?
The coldest month in Walnut Creek is February, when overnight lows average about 42°F.
How much rain does Walnut Creek get?
Walnut Creek sees roughly 27 in of precipitation a year, with January usually the wettest month.

Nearby

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