2020 Long Range Weather Forecast for Pacific Southwest

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

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.)

October 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Oct 1-4Rainy periods, cool
Oct 5-12Sunny, turning warm
Oct 13-17Showers, then sunny, cool
Oct 18-23Rainy periods, cool
Oct 24-31Sunny, cool
Octobertemperature 63° (2° below avg.)
precipitation 0.8" (1" 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 Pacific Southwest Region

Reader Comments

Leave a Comment

RE: Rain Wanted

I am with you Susan. We live in Fremont and I am dying for some rain. I really do not like this warm/hot/humid weather we have right now going into November. I want the rain and the cold!

Outdoor fundraising event April 20 or May 4?

I'm concerned about rain on April 20 for an outdoor event. I'm trying to figure out if we should change it to May 4.

April 27th for a wedding in Camarillo

How will the weather be for April 27, 2019 for a wedding in Camarillo, CA?

Weather

There is no way anybody can predict what the weathers going to be that far out. I hope you have a nice wedding though.statistically speaking it should be dry in that area on April 27

Sonoma weather February 3rd

My divorce is final Feb 3rd and I'm planning a big outdoor party. What are the chances of rain?

Really??? "Big outdoor party

Really??? "Big outdoor party" after a divorce? Pathetic.

Bitter sweet.

Pathetic????
You must be his X-Wife.

Nancy!!

Be nice now Nancy. Simmer down.

Really??? "Big outdoor party

I think this is a perfect way to get through a divorce. What fun.

BIG OUTDOOR DIVORCE PARTY

Now, what in the world is pathetic about having a big outdoor party after a divorce?! I would like to know because each and every year since 1990, I celebrate "my" Divorce Day! I cannot see myself mourning over a marriage we both found out was not meant to be. Therefore, hibernating in my room drenched in tears is not going to happen. Note that you posted a hater comment, and hater comments are only made by someone feeling envy for something they wish they were bold enough to do their very own self... (It's ok, we understand.)

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