Guest, Sign inJoin

Post to South Monrovia Island

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 South Monrovia Island, CA · National Weather Service + NOAA

It hardly ever freezes in South Monrovia Island

South Monrovia Island has warm winters and warm summers, with very little rain. A typical July afternoon reaches 89°, a January night drops to 45°, and snow is almost unheard of. In November, a normal day reaches 75° and a normal night drops to 48°.

Winter 69°/45°Spring 75°/51°Summer 88°/62°Fall 82°/55°
Right now
—
Loading conditions…
Sunrise 9:22 am · sunset 7:50 pm

Getting the latest forecast from the National Weather Service…

What stands out about South Monrovia Island’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 2.6° warmer than the 1900s, a bigger shift than 100% of U.S. towns.A dry climateJust 17 inches of rain and melted snow a year, less than 93% of U.S. towns.
A normal year

Where today sits in South Monrovia Island’s year

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

Full climate →
Winter
69° / 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 South Monrovia Island get?Almost none.When is it wettest?February, with 4.4 inches.Is it warmer than it used to be?+2.6° vs. the 20th century.

Weather talk

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

Town Square →
Weigh in
Is winter the best season in South Monrovia Island?

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 South Monrovia Island itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at San Gabriel Canyon Ph, CA (5 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.