Guest, Sign inJoin

Post to Castaic

We’ll email a one-tap link to publish your post. No password, and nothing is public until you click it.
Already a member? Sign in
Weather in Castaic, CA · National Weather Service + NOAA

It hardly ever freezes in Castaic

Castaic has warm winters and hot summers, with very little rain. A typical July afternoon reaches 93°, a January night drops to 41°, and snow is almost unheard of. In November, a normal day reaches 71° and a normal night drops to 45°.

Winter 64°/41°Spring 74°/47°Summer 92°/60°Fall 80°/52°
Right now
—
Loading conditions…
Sunrise 9:15 am · sunset 8:00 pm

Getting the latest forecast from the National Weather Service…

What stands out about Castaic’s weather

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

Climate →
It hardly ever freezesOnly 37% of years see a night at 32° or below.Hot summersJuly afternoons average 93°, hotter than 93% of U.S. towns.Snow is rareAbout 0.1 inches in a normal year, so most winters see none.Warming faster than mostThe last 30 years averaged 2.3° warmer than the 1900s, a bigger shift than 99% of U.S. towns.
A normal year

Where today sits in Castaic’s year

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

Full climate →
Winter
64° / 41°
Snow is rare
Spring
74° / 47°
Frost is rare by spring
Summer
92° / 60°
87 days reach 90° in a normal year
Fall now
80° / 52°
Mild well into the fall
Best months to be outside
JanFebMarAprMayOctNov
Highs of 62–84° and lows of 40° or more
How much snow does Castaic get?Almost none.When is it wettest?February, with 5.1 inches.Is it warmer than it used to be?+2.3° vs. the 20th century.

Weather talk

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

Town Square →
Weigh in
Is spring the best season in Castaic?

Your answer becomes a post in Town Square.

Start the conversation

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 Castaic itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Newhall 5nw, CA (6 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.