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

Wedding weather

What is expected Nov 2nd in Amador County?

October 5th 2019 in Camarillo

October 5th 2019 in Camarillo for a wedding, thoughts?

Wedding

Should be a nice day for a wedding. Camarillo is beautiful!

Carmel ca weather March 30, 2019

What is expected 3/30/2019 in Carmel, CA ? For outdoor wedding?

Wedding

Thoughts on weather for a wedding October 5, 2019 later afternoon in southern CA

Sunny

It will be sunny with scattered clouds. High of 72F.

October- my favorite month of

October- my favorite month of the year. ..most likely warm and dry in the day and slightly cooler night, but not cold. Quite possibly Santa Ana winds and brush fires in the foothills.

This October (2018), however, has been incredibly uncharacteristic with two freak rain storms thus far.. no complaints here, though. I love heavy rain and lightening storms!

Weather in Laguna CA - April 6th 2019??

Having a wedding in Laguna Ca April 6th 2019. WEATHER??? Later afternoon into the evening outdoors.

Laguna

Ya never know, April can be iffy in So Cal, even along the coastline. Though less chance of rain at the beach than if you were to get married further inland, I think.

Please lend your expertise

Can you help predict the weather forecast, especially for precipitation, in California's Capay Valley in late April/May 2019? Another outdoor wedding.

Pages