2020 Long Range Weather Forecast for San Diego, 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

April 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Apr 1-6Sunny, cool
Apr 7-10Rainy, cool
Apr 11-15Sunny, cool
Apr 16-25Rain, then sunny, cool
Apr 26-30Scattered showers, cool
Apriltemperature 56° (4° below avg.)
precipitation 1.3" (0.5" below avg. north, 1" above south)

May 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
May 1-4Sunny, warm inland; am sprinkles, pm sun coast
May 5-6Sunny; warm coast, hot inland
May 7-12Sunny, hot inland; am sprinkles, cool coast
May 13-23Sunny, turning hot
May 24-31Sunny inland; am sprinkles, pm sun coast; warm
Maytemperature 65.5° (2° above avg.)
precipitation 0.4" (0.1" below avg.)

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 Diego, CA

Reader Comments

Leave a Comment

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.

April 6 2019

Having an outdoor wedding April 6th. What is the weather forecast? Please please please tell me dry!

Rainfall in April

Well, the old saying "April showers bring May flowers" is not so true for Northern California. I suggest you check online for the history of April rainfall, specifically in the North Bay but I wouldn't be at all surprised if you learn it's less than an inch. Having said all that if it turns out that 2019 is a rainy year it's pretty much stopped all together by April. Also, we're in the 5th year of a pretty bad drought. Great for outdoor weddings bad for farmers and ranchers. Especially when one considers the fact that California's agriculture feeds one quarter of the world's population!
I think you'll be fine. But in case it does turn out that it's going to rain the slightest amount for a very short time on the most important day of your life make sure you have plenty of tarps, stakes and rope/lines to rig up tents for you guests and food. Congratulations and the best of luck!

Rainfall in April revised response

Oh, for heavens sake LOL, I didn't realize it's in Pasadena! Sorry I went on and on about No Cal. Well, your guess is as good as mine re Pasadena. But I bet if you ask God to not let it rain that day, he'll be cool about it and not let it rain. But in case it does, I stand by my suggestion that you have make sure your wedding planner sets up enough tents. They can actually be very lovely if done right. Best of Luck!

"Please please please tell me dry!"

Dry.

weather for the mnth. of april 2019

significant rain and or cold?

San Jose CA Long Range Forecast 2018-2019

I firmly believe that from San Jose CA south we will see a drier and warmer than normal Winter/Spring as Fall will be warmer and drier than normal. My theory is if summer has been warm and with the major wildfires CA has had and with predictions of more fires for the Fall the warming from the fires and particles could lead to a higher chance of a drought.

I think that CA from San Jose south may be in for another long stretch of dry weather despite the El Nino forecast. The resilant ridge of High Pressure that was in effect during our last multi-year drought and the lack of sunspots may constitute for the Old Farmers Almanac to rethink their Long Range Forecast.

If we have a lot fo sunspots during an El NIno/La Nina Year think 1998 more flooding will occur due to the Pineapple Express.

Do you predecct above normal percipitation in the form of major Pineapple Expresses with mudslides along Highway 1?

Will San Jose CA be in for a drier than normal winter/spring for 2018-2019?

April 6 2019

The wedding is in Pasadena ca

Will there be higher than

Will there be higher than normal rainfall for the High Desert of Southern California this coming Winter?

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