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Weather in Acton, CA · National Weather Service + NOAA

Acton has hot summers

Acton has mild winters and hot summers, with very little rain. A typical July afternoon reaches 93°, a January night drops to 37°, and snow is almost unheard of. A typical November afternoon reaches 66°, and nights fall to 41°.

Winter 58°/37°Spring 71°/45°Summer 91°/61°Fall 77°/50°
Right now
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Sunrise 6:14 am · sunset 4:58 pm

Getting the latest forecast from the National Weather Service…

What stands out about Acton’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Hot summersJuly afternoons average 93°, hotter than 92% of U.S. towns.Snow is rareNo measurable snow in a normal year.Warming faster than mostThe last 30 years averaged 2.0° warmer than the 1900s, a bigger shift than 94% of U.S. towns.A dry climateJust 11 inches of rain and melted snow a year, less than 98% of U.S. towns.
A normal year

Where today sits in Acton’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
58° / 37°
Snow is rare
Spring
71° / 45°
Last frost around Mar 10
Summer
91° / 61°
118 days reach 90° in a normal year
Fall now
77° / 50°
First frost around Nov 19
17 daysuntil the usual first frost (Nov 19)
Best months to be outside
MarAprMayOctNov
Highs of 62–84° and lows of 40° or more
How much snow does Acton get?Almost none.When is it wettest?February, with 2.6 inches.Is it warmer than it used to be?+2.0° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Acton.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Acton itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Acton Escondido Fc261, CA (5 mi, snow) and Palmdale, CA (8 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.