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San Marino, CA weather and climate

Los Angeles County, CA · population 12,279 · about 568 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at San Marino's own coordinates.

The year at a glance

Sunny days
291
clear or partly cloudy, per year
Precipitation
14 in
per year
Wet days
34
rain or snow per year
Snowfall
0 in
per year
Hot days
68
above 90 °F
Freezing nights
0
at or below 32 °F
Humidity
59%
average relative
Average temperature
66 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
6080JanMarMayJulSepNovDaily high, Jan: 68 °FDaily high, Feb: 69 °FDaily high, Mar: 72 °FDaily high, Apr: 75 °FDaily high, May: 77 °FDaily high, Jun: 82 °FDaily high, Jul: 87 °FDaily high, Aug: 89 °FDaily high, Sep: 88 °FDaily high, Oct: 82 °FDaily high, Nov: 74 °FDaily high, Dec: 67 °FDaily low, Jan: 46 °FDaily low, Feb: 47 °FDaily low, Mar: 49 °FDaily low, Apr: 52 °FDaily low, May: 56 °FDaily low, Jun: 60 °FDaily low, Jul: 64 °FDaily low, Aug: 64 °FDaily low, Sep: 63 °FDaily low, Oct: 57 °FDaily low, Nov: 50 °FDaily low, Dec: 45 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high686972757782878988827467
Daily low464749525660646463575045

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.01.02.03.0JanMarMayJulSepNovSan Marino, Jan: 3.3 inSan Marino, Feb: 3.5 inSan Marino, Mar: 2.2 inSan Marino, Apr: 0.9 inSan Marino, May: 0.4 inSan Marino, Jun: 0.1 inSan Marino, Jul: 0.1 inSan Marino, Aug: 0.0 inSan Marino, Sep: 0.1 inSan Marino, Oct: 0.6 inSan Marino, Nov: 0.8 inSan Marino, Dec: 2.2 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Marino3.33.52.20.90.40.10.10.00.10.60.82.2

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovSan Marino, Jan: 19 daysSan Marino, Feb: 18 daysSan Marino, Mar: 21 daysSan Marino, Apr: 23 daysSan Marino, May: 24 daysSan Marino, Jun: 27 daysSan Marino, Jul: 29 daysSan Marino, Aug: 30 daysSan Marino, Sep: 28 daysSan Marino, Oct: 27 daysSan Marino, Nov: 24 daysSan Marino, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Marino191821232427293028272421

Compare San Marino with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered California city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).

Citing this page

Writing about San Marino's climate in a report or paper? Cite this page directly. The reference period is part of the citation, so it stays accurate even as individual numbers are refined; add an access date in whatever citation style you use.

VSWeather. San Marino, CA weather and climate: 1991-2020 climate normals. https://vsweather.com/weather/san-marino-ca/. Computed from Open-Meteo historical reanalysis, station-calibrated against NOAA NCEI climate normals.

BibTeX entry
@misc{vsweather_san_marino_ca,
  author = {{VSWeather}},
  title = {San Marino, CA weather and climate: 1991-2020 climate normals},
  howpublished = {\url{https://vsweather.com/weather/san-marino-ca/}},
  note = {Computed from Open-Meteo historical reanalysis, station-calibrated against NOAA NCEI climate normals}
}

How to cite VSWeather explains the sources and verification behind these numbers.