2020-2021 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 2021 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

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)

September 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Sep 1-3Showers, cool
Sep 4-8Sunny inland; am sprinkles, pm sun coast; cool
Sep 9-15Sunny; hot inland, cool coast
Sep 16-18Sunny, hot
Sep 19-27Sunny, warm
Sep 28-30Showers, cool
Septembertemperature 71° (1° above avg.)
precipitation 0.2" (avg.)

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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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.

Climate change

I have to first say Cathy's comment above about her sister really made my day. I am a liberal leftie type and I am heart warmed my your feelings. I like seeing people come together instead of letting things divide them. We live in such a climate of division and I always do what I can to not make it worse. Now about climate of the weather variety: I live in San Francisco and not on a farm, but weather is important to me because hot sunny days make me very cranky...I have no idea why, I only know that when it's cloudy and raining, I feel good. I have lived here in the Bay Area since 1983 and have watched the climate change. Back then, it used to be thickly foggy almost every morning and it rained pretty much year round though less in the summer. Now, we don't have that tule fog in the morning except around Christmas time and then it just goes away. And it goes many months without a drop of rain from late spring to November or so. The area to our north has been plagued with horrible fires for the past few years and the air pollution is hideous. I start thinking I should move to Seattle. Whatever caused it, there's no question in my mind that climate change is real.

It is what it is....

Greetings! I was born in California in the 1950’s and I have noticed the weather pattern changes in the 1980’s. My father comes from long line of farmers and always stressed to study and pay attention to the skies and weather. He loved Farmer’s Almanac &studied and read and followed the suggestions. The weather patterns since 1980’s are very inconsistent at times no distinctions from one season to another.
We seriously need to work together as a team on this instead of pointing fingers and calling names. Political views have no tolerance in this Country now which is most unfortunate—I have big sister who is Liberal Left and myself Independent Republican, so you could imagine what conflicts this starts. But getting older both of us with health issues i have decided bury the hatchet be more tolerant and Life is easier for me. Let folks speak their minds get it out Freedom of Speech and i don't have to have the last word . Yes the weather isn’t always what i hoped or expected but this is the New Normal. I don’t have to like it But i can work on making the World a place of love and tolerance. Thank you

Calif weather

Certainly won't complain about the beautiful California weather & rain. But, PLEASE give me 1 or 2 good hard freeze days, purely for spring/summerinsect control purposes!

Complaining about the weather... All Weather is Good Weather

This is written as a response to a female writer from San Diego, who around Thanksgiving complained about it being too warm in our area for the holidays:

I think you ought to consider moving, too! Or just start embracing what you have and be grateful!

Climate change is real!
Therefore, not the first time it is happening in recorded history!
Just contemplate why Greenland is called what it is!

And for the record: I am an immigrant, a naturalized citizen and a San Diego County resident for almost 37 years. Danish native, psychologist, and linguist. But most importantly daughter and granddaughter of farmers. If there is anyone out there that knows the importance of weather and hard work, it's those folks!

That is also why I am so happy having just found this invaluable resource, searching the web for info. about the weather prediction for the Rose Parade in Pasadena, CA on Jan. 1st, 2020.

Hoping to go and take in the wonders of what can be created out of what is grown in the soil in this magnificent state! Especially after having watched Nan Sterman's A Growing Passion on KPBS yesterday morning, documenting the preparations, efforts, and accomplishments of a recent parade. Highly recommendable for anyone who wants to learn about gardening and growing our own food.

Best wishes to you all from


Jeffs comment on cal weather in Bay area.

Jeff. You can blame it on the Bosinova, or because you're in San Francisco, you can blame it on the Pelosi's, I do.
Merry Christmas. Any other belly aching blame it on Gavin, another Pelosi family stooge.


We had snow in Yucca Valley on Thanksgiving. The local mountains were covered and it was SO beautiful ! The only problem is my dogs refused to go outside- it was COLD ! Still very thankful we live in such a beautiful area.

OOPS! We had a White Thanksgiving (in Calif)!

We had a White Thanksgiving here in Pinon Hills, CA. 12" of snow. Melting down enough for me to get out for work tomorrow morning. :-(
OOPS! Don't mean to rub it in!! LOL