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California Polytechnic State University, CA weather and climate

San Luis Obispo County, CA · population 7,529 · about 335 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at California Polytechnic State University's own coordinates.

The year at a glance

Sunny days
293
clear or partly cloudy, per year
Precipitation
17 in
per year
Wet days
39
rain or snow per year
Snowfall
0 in
per year
Hot days
18
above 90 °F
Freezing nights
2
at or below 32 °F
Humidity
71%
average relative
Average temperature
61 °F
year round

Monthly temperatures

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

Daily highDaily low
6080JanMarMayJulSepNovDaily high, Jan: 65 °FDaily high, Feb: 65 °FDaily high, Mar: 67 °FDaily high, Apr: 69 °FDaily high, May: 72 °FDaily high, Jun: 76 °FDaily high, Jul: 78 °FDaily high, Aug: 80 °FDaily high, Sep: 80 °FDaily high, Oct: 78 °FDaily high, Nov: 71 °FDaily high, Dec: 64 °FDaily low, Jan: 44 °FDaily low, Feb: 44 °FDaily low, Mar: 46 °FDaily low, Apr: 47 °FDaily low, May: 49 °FDaily low, Jun: 52 °FDaily low, Jul: 54 °FDaily low, Aug: 55 °FDaily low, Sep: 54 °FDaily low, Oct: 51 °FDaily low, Nov: 47 °FDaily low, Dec: 44 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high656567697276788080787164
Daily low444446474952545554514744

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovCalifornia Polytechnic State University, Jan: 3.9 inCalifornia Polytechnic State University, Feb: 3.7 inCalifornia Polytechnic State University, Mar: 2.8 inCalifornia Polytechnic State University, Apr: 1.0 inCalifornia Polytechnic State University, May: 0.4 inCalifornia Polytechnic State University, Jun: 0.1 inCalifornia Polytechnic State University, Jul: 0.0 inCalifornia Polytechnic State University, Aug: 0.0 inCalifornia Polytechnic State University, Sep: 0.0 inCalifornia Polytechnic State University, Oct: 0.8 inCalifornia Polytechnic State University, Nov: 1.3 inCalifornia Polytechnic State University, Dec: 3.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
California Polytechnic State University3.93.72.81.00.40.10.00.00.00.81.33.0

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovCalifornia Polytechnic State University, Jan: 19 daysCalifornia Polytechnic State University, Feb: 18 daysCalifornia Polytechnic State University, Mar: 21 daysCalifornia Polytechnic State University, Apr: 24 daysCalifornia Polytechnic State University, May: 26 daysCalifornia Polytechnic State University, Jun: 28 daysCalifornia Polytechnic State University, Jul: 29 daysCalifornia Polytechnic State University, Aug: 30 daysCalifornia Polytechnic State University, Sep: 29 daysCalifornia Polytechnic State University, Oct: 27 daysCalifornia Polytechnic State University, Nov: 23 daysCalifornia Polytechnic State University, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
California Polytechnic State University191821242628293029272321

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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).