2019-2020 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 2020 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

September 2019 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Sep 1-4Sunny; hot north, warm south
Sep 5-10Sunny, cool
Sep 11-20Sunny, hot inland; A.M. sprinkles, P.M. sun coast
Sep 21-23Sunny; turning hot north, warm south
Sep 24-30Scattered showers, cool
Septembertemperature 70.5° (2° above avg. coast, 1° below inland)
precipitation 0.5" (0.5" above avg. north, avg. south)

October 2019 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Oct 1-4Sunny, cool
Oct 5-11Sunny, turning warm
Oct 12-19Sunny, warm north; A.M. sprinkles, P.M. sun south
Oct 20-25Rainy periods, cool
Oct 26-31Sunny, cool
Octobertemperature 65° (1° above avg. north, 1° below south)
precipitation 1.5" (2" above avg. north, 0.5" below south)

Annual Weather Summary
November 2019 to October 2020

Winter will be cooler than normal. Rainfall will be below normal in the north and above normal in the south, with below-normal mountain snows. The coolest temperatures will occur in mid- and late December, mid- to late January, early to mid-February, and early and late March. The stormiest periods will be in late November, mid- to late December, and early February; from late February into early March; and in mid- and late March. April and May will be cooler than normal, on average, with rainfall below normal in the north and above normal in the south. Summer will be cooler than normal, with rainfall slightly above normal. The hottest periods will be in mid-July and late August. September and October will be slightly cooler than normal, on average, with rainfall above normal in the north and below normal in the south.

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 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for San Luis Obispo, CA

Reader Comments

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Socal weather

The main reason it's impossible to predict weather in socal is because wait for it
Because most of socal is located in a basin. It has mountains to the north east and south those mountains cause high pressure to form and stay and as long as the presure is high water producing clouds will have a hard time moving in over land.

So Cal rain forecast - SO WRONG

This site is often way off for rain forecasts for So Cal because it lumps Los Angeles and other areas south of Santa Barbara together with areas as far north as San Francisco - a distance of hundreds of miles - and as we know, up north is WAY wetter than we are, and consistently so. It looks like you can just plug in your zip code and get a more accurate forecast, but it really doesn't seem to work that way. I really wish they separated the north and south more accurately. Obviously they are WAY OFF once again!!

Rain???

The fact is Southern California feels Doomed to NO RAIN

So wrong

Is it winter or summer? Nearly 90° in JANUARY?!?! We havent gotten a winter at all!!

Rain forecast for January

Wrong wrong wrong!!! No rain I'm sight as a matter of fact heat heat heat!!! Please don't forecast rain for Southern California that's a joke.

Hehe

I'm not entirely sure it is their fault that it's not raining. Perhaps a local news stations website would be a better choice for up to the minute forecasts. I just use farmers for trying to narrow down planting times for the garden and other seasonal planning. I've always found them to be reliable in general. But long range weather forecasts are difficult at best as their are many unknown variables to account for. I would suggest wunderground.com for local up to date weather.

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