2019-2020 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 2020 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

August 2019 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Aug 1-6Sunny, seasonable
Aug 7-13Sunny, cool
Aug 14-19Sunny, hot inland; A.M. clouds, P.M. sun coast
Aug 20-25Sunny inland, A.M. clouds coast; cool
Aug 26-31Sunny; turning hot inland, warm coast
Augusttemperature 70° (1° below avg.)
precipitation 0.1" (avg.)

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)

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

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Riverside County

What kind of weather can the Riverside county expect from October 2019 into January 2020? Last year we had a very nice and unusually chilly Thanksgiving holiday. I was just wondering if we should expect the same this year. Please advise/thank you!!!

Up coming 2019 & 2020 rainfall

Can't you give us an idea of our 2019 & 2020 rainfall for San Francisco Calif.? Just an idea---
Thank You

Winter 2018-2019 rainfall

Winter rainfall for the south turned out to be inaccurate and just the opposite of what you predicted. Rainfall in California was actually ABOVE normal, so much so that it ended the drought all over the state.

Innacurate

We are heading into a record setting long term heatwave and your forecast is for warm and rain. Totally missed and mis forecasted this years summer completely

Accurate prediction

It Rained last night pretty heavily
And yes it’s hot
I hope August prediction is accurate

Weather?

More like smeather. Ben Franklin would be very upset. This is awful and horribly inaccurate. I have a big pee pee, seeing how inaccurate this is makes my pee pee bigger and stronger. Cower before my exuberantly gargantuan pee pee, you plebeian troglodyte scum.

https://www.almanac.com/weather/longrange/CA/Sacramento

March is the sole month without data representation, and we've having rain or showers five days out of seven. Why no forecast???

Number of Days it has rained

Does anyone know where I can find a comparison of the average number of days it rains versus the actual number of days it has rained? Example: November, 2018: 8 Rain Days on Average/XX Actual Rain Days. Thanks.

3 Years Drought Now This?

I think I might take back my wishes for rain!

Rain

Right??!! So agree! Enough already. Hard to be a beach bum with all this madness. I long for 90 to 100 degree heat!! Looove it.

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