2020-2021 Long Range Weather Forecast for San Luis Obispo, CA

Get the Long Range Weather for Your Location

See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of The 2021 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

August 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Aug 1-8Sunny, seasonable
Aug 9-11Scattered showers north, sunny south; cool
Aug 12-16Sunny, warm
Aug 17-25Sunny inland; am clouds, pm sun coast; cool
Aug 26-31Sunny, warm
Augusttemperature 69° (2° below avg.)
precipitation 0.2" (0.2" above avg. north, avg. south)

September 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Sep 1-3Showers, cool
Sep 4-8Sunny inland; am sprinkles, pm sun coast; cool
Sep 9-15Sunny; hot inland, cool coast
Sep 16-18Sunny, hot
Sep 19-27Sunny, warm
Sep 28-30Showers, cool
Septembertemperature 71° (1° above avg.)
precipitation 0.2" (avg.)

Annual Weather Summary
November 2020 to October 2021

Winter will be cooler and drier than normal, with below-normal mountain snows. The coldest temperatures will occur in late December, late January, and mid- to late February. The stormiest periods will be from late January into early February, mid- to late February, and late March into early April. April and May will be cooler than normal, with rainfall below normal in the north and above normal in the south. Summer temperatures will be cooler than normal inland and warmer near the coast, with slightly above-normal rainfall. The hottest periods will be in mid-June and mid- to late August. September and October will be warmer and rainier than normal.

Map showing Old Farmer's Almanac long range weather region number 16

About the Pacific Southwest Region

The Pacific Southwest long range weather region includes all or part of the following states: CALIFORNIA (Long Beach, Los Angeles, San Diego, San Francisco, San Jose).

Pacific Southwest Neighboring Regions

Here are the regions that neighbor the Pacific Southwest long range weather region:

Temperature and Precipitation November 2020 to October 2021

Temperature and Precipitation Chart, November 2020 to October 2021 for San Luis Obispo, CA

Reader Comments

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I agree. It needs to be

I agree. It needs to be updated for SoCal

Farmers Almanac Zones

I may be mistaken, but this zone SW has nothing to do with modern weather predictions.The Farmers Almanac has been predicting or fore casting based on the moon cycles for 100 years + or - My Grandfather born in 1907 died in 1993 followed this for planting schedules. I have continued to read it just because! I also measure the rain & temperatures as he did, just because.
I have found this to be fairly accurate.

Stop Whining!

They say that weather predictions beyond 10 days out are correct only 50% of the time. So, stop whining that SoCal is different than Nor
Cal. Beyond 10 days out, it's only for entertainment's sake. If you want an accurate 10-day forecast, go to NOAA.gov . . . and stop whining!

please stopping lumping So Cal with No Cal's weather!

Every year you guys lump So Cal, central coast and No Cal together in your predictions and it makes for very inaccurate forecasts. The Calif coast is hundreds of miles long and has very different topography and climates from north to south and west to east thus giving us everything from blazing hot and dry, to heavy snow to rainy and windy or foggy and all on the same day. Thank you!

Central California

There should be another region. Central California ( Santa BarbaraSan Luis Obispo County) has a whole different climate.

San Luis Obispo County

I agree, we need specfic forecast for San Luis Obisp County, in California. We have coastal areas and inland, very different climates.

Change your definition of Pacific SW

TOFA, you may want to change your definition of the Pacific SW. California has two distinct climate types. Southern California has a distinctly different climate from Northern California, which is more similar to the climate experienced by the Pacific NW. It would be far better to have a Northern California zone and a Southern California zone in your forecast rather than lumping them together as the Pacific SW.

Northern California

Middle California and Southern California have very different climates during the winter than Northern California. Starting at the Sutter Buttes and going to the Oregon border, is Northern California. Yes, we get the heat but, the mountains get more snow and the climate is cooler in the winter. Sacramento and the Delta/Bay areas get lots of fog. We are drier. Please don't lump Northern California with the rest of the state-so that we can have more accurate forecasts in the future.

You are wrong

California has four main climate regions and 3 climate zones. The zones are a subtropical climate zone, a hot tropical climate zone which is Southern California, and
the temperate climate zone Which is Northern California. The Climate regions are as follows Northern California, Pacific North West climate, Central Calfornia climate, Southern California climate, Pacific South West Climate. California also has a Mediterranean climate.

Northern & Southern Calif

I totally agree. Our Southern Calif climate is not like that of San Francisco and points farther north. In SoCal, we have a Mediterranean climate, and except for occasional heat during July to Sept, it is very pleasant.

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