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Weather in Hercules, CA · National Weather Service + NOAA

It hardly ever freezes in Hercules

Hercules has warm winters and cool summers, with very little rain. A typical July afternoon reaches 75°, a January night drops to 43°, and snow is almost unheard of. Normal November highs come to 64°, and lows to 47°.

Winter 58°/44°Spring 67°/49°Summer 75°/55°Fall 71°/52°
Right now
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Sunrise 6:36 am · sunset 5:09 pm

Getting the latest forecast from the National Weather Service…

What stands out about Hercules’s weather

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

Climate →
It hardly ever freezesOnly 27% of years see a night at 32° or below.Cool summersJuly afternoons average 75°, cooler than 98% of U.S. towns.Snow is rareNo measurable snow in a normal year.
A normal year

Where today sits in Hercules’s year

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

Full climate →
Winter
58° / 44°
Snow is rare
Spring
67° / 49°
Frost is rare by spring
Summer
75° / 55°
6 days reach 90° in a normal year
Fall now
71° / 52°
Mild well into the fall
Best months to be outside
MarAprMayJunJulAugSepOctNov
Highs of 62–84° and lows of 40° or more
How much snow does Hercules get?Almost none.When is it wettest?January, with 4.6 inches.Is it warmer than it used to be?+1.6° vs. the 20th century.

Weather talk

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

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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 Hercules itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Berkeley, CA (10 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.