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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Polar ice caps? Is that your

Polar ice caps? Is that your scientific proof? Nothing will stay frozen forever. Temperatures are rising because as the ice melts, like it has been doing since its formation, the total mass of ice becomes less, therefore, temperatures rise. This is basic physics. I learned these principles in elementary school. Cause and effect...

Rain in Northern California

Holy mackerel! This is the driest fall/winter I’ve seen for a very long time. I’m afraid we are in big trouble with our lack of rain. The animals, forrest and Human survival depends on rain. Can’t they ‘chem-trail’ clouds that will produce rain here?! They’re doing the trails anyway. Why not HELP us all out?! Any answer on this would be appreciated. It’s doable- it’s been proven!

Rain and Water

Be prepared for paying much more for water in the future. I like to keep everything green, unlike many of my neighbors who have let all landscaping just die--GROSS, and such an eyesore!! If you do not want to pay for water--just move to a place where it is just hot and dry and only cactus, rocks, and tumbleweeds! I am a San Diego native, and I have just bcome accustomed to the fact, the weather is changing-- hotter and drier. I wish others would just accept this sad fact--and stop allowing everything to just die all around them, waiting for rain!

Chem-trail

I think you are confusing “chem-trail” for cloud seeding. Chem-trails are water vapors reacting with the heat and chemical exhaust from the airplane’s engine, while cloud seeding is the dispersion of silver iodide or dry ice in the air to affect change in the clouds to produce more rain in a specific region.

Chem not con

Correction - chem trails are silver or aluminum nano particles

Con trails are condensation trails due to the pressures around the wing of a plane.

chem-trails

Not actually an active thing

That's actually not the case.

That's actually not the case. According to UN tapings. Try investigating something without blocks and filters on the content made available to your specific region. You can do this by downloading TOR from the app store.

You assume.

You assume they are waiting. I guess technically, but probably don't think it's worth the wasted water and bills to keep it up. Hopefully they will switch to draught resistant, because though you suggest they should move, you have to remember most of San Diego is an arrid climate and getting more so by the decade (well that may be yearly now).

Plastic

Plastic in our fresh water and oceans is a far greater problem

Hey y'all! El nino or el Nina really going to hit San Diego?

Ok I'm a weather junkie! I love crazy weather I hate how sunny it is in San Diego! My question is......... do we have a el nino really coming up? Like I need rain! Is San Diego going to get before or after thanksgiving? I seen on Facebook San Diego isn't looking good for a el nino or el Nina. I have my fingers crossed we have a strong el nino making it's way! Please let me know if anyone has a time frame or know if it's even going to happen. Thanks:)

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