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Weather in Monrovia, CA · National Weather Service + NOAA

It hardly ever freezes in Monrovia

Monrovia has warm winters and warm summers, with very little rain. A typical July afternoon reaches 90°, a January night drops to 45°, and snow is almost unheard of. In November, a normal day reaches 74° and a normal night drops to 49°.

Winter 68°/45°Spring 75°/51°Summer 88°/62°Fall 82°/55°
Right now
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Sunrise 9:12 am · sunset 7:58 pm

Getting the latest forecast from the National Weather Service…

What stands out about Monrovia’s weather

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

Climate →
It hardly ever freezesOnly 13% of years see a night at 32° or below.Snow is rareNo measurable snow in a normal year.Warming faster than mostThe last 30 years averaged 2.5° warmer than the 1900s, a bigger shift than 100% of U.S. towns.A dry climateJust 19 inches of rain and melted snow a year, less than 90% of U.S. towns.
A normal year

Where today sits in Monrovia’s year

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

Full climate →
Winter
68° / 45°
Snow is rare
Spring
75° / 51°
Frost is rare by spring
Summer
88° / 62°
74 days reach 90° in a normal year
Fall now
82° / 55°
Mild well into the fall
Best months to be outside
JanFebMarAprMayJunOctNovDec
Highs of 62–84° and lows of 40° or more
How much snow does Monrovia get?Almost none.When is it wettest?February, with 4.8 inches.Is it warmer than it used to be?+2.5° vs. the 20th century.

Weather talk

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

Town Square →
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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 Monrovia itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at San Gabriel Canyon Ph, CA (4 mi, snow) and Pasadena, CA (9 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.