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

July 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Jul 1-14Sunny inland; am sprinkles, pm sun coast; warm, then cool
Jul 15-20Sunny, turning hot
Jul 21-23Sunny inland; am clouds, pm sun coast; cool
Jul 24-31Sunny, warm
Julytemperature 71° (avg.)
precipitation 0" (avg.)

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)

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

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Tired of rain

It's getting pretty tiring for those of us in Sonoma too

RE: Rain

Stop whining. It rarely rains in the summer, and would you like the dust bowl to come back? The rains will alllow a sense of normalcy for activities in the summer. You are welcome!


Good stuff!

I would like to know what the

I would like to know what the weather will be on Thursday February 21,2019 will be in Modesto California 95351?


February 26, 2019 and March 2, 2019


Green is nice, but wind turbines and solar arrays kill thousands of migrating birds, ducks and other small animals that come in contact with these wonderful contraptions. Streamers is what they call birds that are cooked when flying over the solar panels. I never see any birds when traveling on Highway 10 on my way to Phoenix. they become chopped chicken. They also have to use hydraulic fluid and oil to work. Many of them leak those oils and fluids. Green is nice, but not always good. Also where do you think the power comes from when you plug in your Tesla, yes, oil !!


People be very careful what you ask for and desire, you just might get it. Actually, we are continously being assaulted daily in various clandestine ways unbeknownst to us. We are considered "Sheeple-Not People"! However, It is still mind blowing that there are still masses of us, that are not even remotely-aware of the methods being used. "Chemtrails","Weather-Manipulation", "Weather-Modification", "Crops and Fields", (Real-Occurance!), being sprayed with lethal chemicals at night by anonymous planes and every crop dying within 3-days! How then is Organic still Organic?, aka "Silent Weapons".

December rainfall

I personally witnessed (and saw measured) a little over 3'' of rain on December 6 here in San Diego. That rain happened during a 3 hour period. That's the most rain we've had ever without having to do much research at all (ok, april 5 1926 might have been a tiny bit more). I know now more than ever its impossible to predict the weather and it's also not possible to change it. Farmers almanac predicted less than average for this month. I've been here. If you can't prove or disprove, or can't actually remember for yourself this so called "climate change" then why torture yourself that "we" are causing it? I've been her since since 89 an there has been no climate change out of ordinary. Sea level is not going up, I can see it for myself. Sure when they re-pave the street in front of your house its hot then. Plants thrive on co2 and create oxygen. Catch rainwater, plant plants, water plants. 1000 sq. ft. collects 600 gallons of water for every 1" of rain! Even in San Diego that's plenty to keep us green with no imported water. Are we all scientists or do we just want to believe those so called scientists? Lets get off our asses and stop counting on the rest of the world to do it for us!

The Sun and Science

I find it Important to recognized how the Sun is the great provider and taketh away of all things that occur on Earth. Remember it is a fixed hot planet or Star of erupting Hydrogen that we the Earth revolve around 365 days a year and our orbit is never the same each year. So when its hotter than normal we are obviously closer to the sun and the sun is radiating more solar radiation. when its is colder than normal we are obviously farther away from the sun and its is radiating less solar radiation ( in theory.) The Earth has had great ice ages and may again. So what cases great freezings of the Planet Earth.?? Lack of Sun and or Lack of Solar Radiation. Therefore What causes the heating of the The Planet Earth....?? More Sun or Solar Radiation. Be cautious of falling into the gap of mans doing of all the climate change particular the heating of the Planet, when in fact maybe we are circling the sun or are in a closer orbit now than ever before. And if we are not careful she might just freeze again.

Climate Change is about more than the weather

A recent entry from San Deigo confused regional weather with climate change, and decided that we aren't getting warmer and the "so called science isn't right. Many people have this misperceptions. I wish science explained the difference in readable laymen language. Explain how weather has been charted for decades & comparing one year to another may be conversation, but it isn't science. Talk about the confusion migratory birds are experiencing and are attacking each other in competition for food. Tell them over development, and poor agriculture practices have and continues destroy habitats. Comment on the value and need for bio-diversity is, for example the need for pollinators in order to produce food, and for example bees are great pollinators and how reduced their populations are. Briefly describe how insects, mammals, retiles and birds are important in different their different 'jobs', and losing any affects everything. Tell them this isn't a local problem but world wide and the rate of change will differ. Explain about sea temperatures over decades and globally, and how it has started to get warmer faster than expected. Tell them as simply as possible how warmer sea temperatures deplete the planets ability to cool itself. That this heat is melting glaciers. Explain that commercial fishing is depleating sea life and some important creatures are starving to death because humans are greedy. Talk about how we need the glaciers to feed our streams and rivers, and because manufacturing has polluted our water sources our farming food productions is threatened as well as our own drinking water. And that we buy too much, and throw away too much and the earth and oceans have limited space for our trash. Maybe throw in the example of South west Australia where it is so hot birds & bats are dying and falling out of trees. Let them know that bats consume insects like mosoquitoes to the rate of 7,000 a night for one little bat. People don't understand that climate change isn't just about warmer but also colder like the Midwest and Northeast this winter. Since hurricanes feed off of warmer water it could be the reason we have had many severe storms, and there are more and they are coming earlier. You might throw in that people who get profits from high carbon producing substances have different concerns than most and have created a political problem. When everything becomes political it's bad news for everyone. You might explain this, but some are willfully ignorant. Thanks. I wrote this in 20 minutes. There is no editing or checking for spelling, but you, the weather people, can sort it out.