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

July 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Jul 1-14Sunny inland; am sprinkles, pm sun coast; warm, then cool
Jul 15-20Sunny, turning hot
Jul 21-23Sunny inland; am clouds, pm sun coast; cool
Jul 24-31Sunny, warm
Julytemperature 71° (avg.)
precipitation 0" (avg.)

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)

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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Farmers almanac ain’t what it used to be

Farmers almanac ain’t what it used to be. You’re right Andy it’s those white lines in the sky they are spraying chemicals... it absorbs the moisture in the air, causes a high pressure system, and the aluminum lands on the ground making fires spark more easily. It’s called “Geoengineering”.
There are side effects to this… It causes other parts of the country to have severe opposite weather, like flooding etc.
humans are controlling the weather now, and have been for about 40 years.
Have you noticed the clouds in the sky do not look the same as they did when we were kids in the 1960s

We Need The Rain!!!!

I’m tired of this heat in February, this is ridiculous. We need weeks of rain and thunderstorms. I always wonder what those tiny jets in the sky are doing spewing out that smoke up high in the sky, putting all kinds of chemicals up there possibly changing the climate and weather patterns. That’s why everyone wants to move here to California because it’s always sunny, no rain, no thunderstorms, no tornadoes, no hurricanes, no snow storms. California beaches suck, it’s always hazy, mountains are always bone dry, wildfires, and earthquakes. On the other hand for the East and Midwest at least you know those storms are coming and your prepared but not with earthquakes or wildfires.

Pretty good

The rain is on point but the temp is way off

weather report

The Editors's picture

We appreciate your letting us know.

Not accurate

This is far from accurate


The Editors's picture

Thanks for taking the time to write and for having the faith to hope it might be. We aim for 80 percent accuracy, then Mother Nature does something different.

This sucks!!

This long-range forecast is consistently wrong every year. I don't think I've ever experienced a February this hot, and yes I say HOT...ever. Forget mild. Forget warm. It's freaking HOT!! We're having weather we shouldn't even see before May or June at the earliest. Not a drop of rain since way back in December. We had a couple weeks in Jan that felt sort of seasonal and that literally ended overnight. We just came out of Indian summer right before Thanksgiving and now we're experiencing temperatures so far above average it's nearly a crime. Parts of Antarctica hit a high of 65 degrees just back on 2/13, the hottest temperature ever recorded on the continent. If I could strangle that jet stream, I would. I am getting so tired of reading articles about how the east is FINALLY getting cold and about to experience a dip in the jet stream, while this lousy side of the country is already BAKING, so guess what, we get to bake even more, no thanks to that horrible UGLY, H H H H H H High pressure system that literally sits over the west coast like a weather version of amoebic dysentery week after week after week spinning in an endless groundhog day of hell never to loosen its grip.

Ok, my apologies for the rant. I would just like to experience more than a week of 52-degree highs and less than 8-9 solid months of humid sky vomit and increasingly oppressive heat that used to be real tule fog. I'm sorry but it should NOT be 74 degrees in San Francisco around Valentines Day. I know that in previous years it wasn't unusual to have a few warm days in February, but I agree with Ronald that this is beyond ridiculous. The entire month has been over 65 I think.

Oh and I'm almost certain that prediction for a "cooler than average" summer actually means (in reality speak) that we'll probably see temps in the 100s again this year. I swear...this plus the thought of another 4 years of this bogus administration under an orange retarded primate is enough to make me want to move to Canada.

California's winter

The Editors's picture

If you were depending on our forecast to change things … we only wish that we could. Our meteorologist makes his predictions on reliable information/data, and then—sometimes quite literally—the wind, e.g., the jet stream, blows a different way. We sincerely appreciate your trust in our predictions. FWIW, in New England, we have had some oddly warm days—pleasant, but decidedly unseasonable—and some people just wanted a return to winter, at least for a short while. So we know what you mean.

WTF?? Wheres the rain I'm sick of this sun! >:(

Seriously this is getting ridiculous, if there is another drought I'm moving for good, California is a beautiful state and I really don't want to leave but if it's going to be constantly sunny then its not healthy for your skin, we've had an uptick of skin cancer and many people are dying from the cancer due to the constant sun, this weather is deadly it is KILLING PEOPLE AND IT NEEDS TO END NOW!!

Climate Change

As our world wobbles thru the solar system, the 7 billion of us "highly evolved ?? "apes, struggle to stay atop the leader-board as a species supposedly at the top of the food chain. I marvel that we look out into the universe and see other worlds, am fascinated by and hope to live long enough to watch a human set foot on Mars(or at least back to the moon again??) But we also need to realize that this gem of a blue planet we live on is all we have right now. I am wholly convinced that we are witnesses to a period of change in the climate of our plant. We can argue back and forth about the anthropogenic contribution to any measured and scientifically understood change in climate, but our world has been both a proverbial steam bath at times as well as a giant Popsicle in its 4 billion years of existence. We can measure changes we have made that contribute to changes in climate but , well the climate is destined to alter with or without our input.... always has... always will. What we NEED to think about (WITHOUT ALL THE DARN POLITICS!!!)is the fact that there are finite resources on this planet. We must do a better job of stewardship of those resources and think long term about the generations to come after we who are here now are dust.