2019 Long Range Weather Forecast for San Luis Obispo, CA

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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 annual Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

August 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Aug 1-4Sunny, cool inland; am sprinkles, pm sun coast
Aug 5-10Isolated showers, cool
Aug 11-15Sunny, cool north; sprinkles, warm south
Aug 16-21Sunny inland, am clouds coast; cool
Aug 22-31Sunny inland; am sprinkles, pm sun coast; cool
Augusttemperature 69° (2° below avg.)
precipitation 0.1" (avg.)

September 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Sep 1-4Sunny, warm
Sep 5-17Sunny inland; am sprinkles, pm sun coast; cool
Sep 18-21Sunny, hot
Sep 22-28Sunny, turning cool
Sep 29-30Rainy north, sprinkles south; cool
Septembertemperature 69° (1° below avg.)
precipitation 0.5" (0.5" above avg. north, avg. south)

Annual Weather Summary: November 2018 to October 2019

Winter temperatures will be near or cooler than normal, with rainfall above normal in the north and slightly below normal in the south. The coldest periods will occur in late December, mid-January, and early February. Mountain snows will be near normal, with the stormiest periods in late November, late December, and early January. April and May will be cooler and drier than normal. Summer will be warmer than normal, with near-normal rainfall. The hottest periods will be in mid- to late June, mid-July, and late August. September and October will see temperatures above normal in the northeast and below normal in the southwest. Rainfall will be slightly above 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 2018 to October 2019

Temperature and Precipitation Chart, November 2018 to October 2019 for San Luis Obispo, CA

Reader Comments

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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

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.

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

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