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

Leave a Comment

your predictions are ridiculously wrong

There will be no rain in California through most of February, yet you predict a lot of rain. What is your excuse for being absolutely wrong on a regular basis?

accuracy

The Editors's picture

We do not calculate our accuracy until at least the end of a season (not weekly, not monthly). And this season (winter) is not over yet. Traditionally our predictions are 80 percent accurate; sometimes more, sometimes less. If the ocean temps, jet stream/s, oscillations, and other factors would conform to our expectations, we—and every other weather prognosticator—would be 100 percent accurate all the time.

Well...not ridiculously wrong...sheeesh

I think your comment must refer to the graft at the head of these comments,
which says that February will be near NORMAL - not less, not more.

Why I moved

I was born and raised in Long Beach. After 50 years, two years ago I moved to the Portland area, I will never move back to LA! The traffic, (I drove the 405/10 interchange everyday) the people suck now and everything is brown and dead. I remember Big Bear having three feet of snow in October, they don't even get three feet in a year now. When I was a kid it used to rain and hail, not anymore. It is so green and beautiful here in Portland. We've got more rain the in last two weeks than LA in the last year!

Southern Cali

California weather, especially SoCal, is being controlled by geo-engineering. It creates these incessant high pressure domes and steers the storms (rain) up further north of our state.

I completely agree with Connie's comments.

You hit the nail on the head, Connie. Here in San Diego we are going on a year and a month without decent rainfall. The climate mafia has sealed SoCal's fate. Just look up, we get sprayed here every day, especially when precipitation should be moving in. Just look around at all of the dead and dying vegetation. A direct result of aluminum, barium, etc. poisoning from above. No more trees or animals. Many think this region is paradise. Let me say that hell might also have sunshine and palm trees, but that does not make it a nice place.

Really?

“Stormiest periods in early and late January”? Right. It’s like 65 and sunny. No rain in sight. It’s not just a problem with forecasts in So Cal, I’m in Redwood City, 20 miles south of San Francisco and north of San Jose.

SO WRONG - AGAIN

Why can't this site do a better job of predicting for SOUTHERN California? They always seem to lump us together with No Cal making our forecasts in the southland so wrong! LA, OC, San Diego, Riverside, etc. are all way far south of San Francisco, San Jose, etc. yet they keep forecasting us as one region, even though it's hundreds of miles and a very different climate...obviously.

California forecasts

The Editors's picture

As you probably know, a key driver of Southern Cal weather is the Pacific Ocean: The water temp (El Niño, La Niña, and their cousin Neutral) and other currents, as well as the jet stream conspire to change conditions dramatically and quickly. We distinguish portions of the region (north and south, and near the coast vs inland) to indicate differences in the forecast. So you know, each region’s shape, or area, is based on the climatological movement of weather systems (that is, wind and other patterns). Similar weather can occur in your region’s disparate areas. (Consider this: Readers on the East Coast often wonder when Richmond, Virginia, and Boston, Massachusetts, are in the same region; it’s because in a similar way, weather—storms, often—travels up the coast affecting all areas between the two cities.)
 

Almanac has been trusted for years

I imagine climate change has made weather much more difficult to predict these days. It doesn’t make sense for the Almanac to deliberately make errors in their predictions. I live in So Cal and while it would be helpful
to have local information I can turn on the 11:00p news for that; and even Dallas Raines is off once in awhile. The Farmers Almanac has a rich history in America. Keep up the meaningful work. It’s appreciated.

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