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Atascadero weather

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Atascadero weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Atascadero weather in numbers

measured normals and 10 years of recorded weather

Atascadero swings 42°F across the year, from 83°F highs in July to 41°F lows in December, and January is usually the wettest month in a year that brings about 21 in of precipitation. Over 10 years of recorded weather it averages 112 days a year at 77°F or above, 42 of them at 86°F or above, 2 frost nights, and rain on 43 days.

Warmest month
July
83°F average high
Coldest month
December
41°F average low
Wettest month
January
21 in a year
Comfortable
4 months
February, March, April and May
Residents
30,000
share this forecast
Most accurate here
European
97/100 CheckWeather Score
Warm days
112 days
a year at 77°F or above
Frost nights
2 nights
a year below 32°F
Rain days
43 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Atascadero’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

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

where the models agree, and where they split

Atascadero, California (CA) is at its warmest in Jul (average highs near 83°F) and coldest in Dec (lows around 41°F), with roughly 21 in of precipitation across the year. Below, compare what NWS, American, European forecast for Atascadero 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.

Atascadero climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
58°
42°
Feb
60°
42°
Mar
61°
45°
Apr
67°
46°
May
69°
49°
Jun
76°
54°
Jul
83°
56°
Aug
83°
57°
Sep
80°
56°
Oct
77°
50°
Nov
66°
45°
Dec
59°
41°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Atascadero has changed since 1995

Atascadero sits in the same roughly 50 km square of NASA's reanalysis as San Luis Obispo. That square ran 1.0°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the San Luis Obispo page.

Which forecast is most accurate in Atascadero?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
97
/100rank #1
94±0.6°F98±0.8 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
84
/100rank #2
66±3.4°F89±3.5 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.

Common questions

What's the weather in Atascadero today?
On this page we show what NWS, American, European each forecast for Atascadero 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 Atascadero today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Atascadero 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 Atascadero?
Over the last 30 days, the European model has been the most accurate for Atascadero (CheckWeather Score 97/100), ahead of the American at 84. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Atascadero?
July is typically the warmest month in Atascadero, with average highs around 83°F.
How cold does Atascadero get?
The coldest month in Atascadero is December, when overnight lows average about 41°F.
How much rain does Atascadero get?
Atascadero sees roughly 21 in of precipitation a year, with January usually the wettest month.

Nearby

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