2019 Long Range Weather Forecast for San Diego, CA

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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 annual Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

September 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Sep 1-4Sunny, warm
Sep 5-17Sunny inland; am sprinkles, pm sun coast; cool
Sep 18-21Sunny, hot
Sep 22-28Sunny, turning cool
Sep 29-30Rainy north, sprinkles south; cool
Septembertemperature 69° (1° below avg.)
precipitation 0.5" (0.5" above avg. north, avg. south)

October 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Oct 1-5Rain then sunny, cool
Oct 6-13Sunny, turning warm
Oct 14-18Rain, then sunny, cool
Oct 19-24Sunny, turning warm
Oct 25-28Sunny, cool
Oct 29-31Rain north; sunny, cool south
Octobertemperature 66° (1° above avg.)
precipitation 1.5" (2" above avg. north, 0.5" below south)

Annual Weather Summary: November 2018 to October 2019

Winter temperatures will be near or cooler than normal, with rainfall above normal in the north and slightly below normal in the south. The coldest periods will occur in late December, mid-January, and early February. Mountain snows will be near normal, with the stormiest periods in late November, late December, and early January. April and May will be cooler and drier than normal. Summer will be warmer than normal, with near-normal rainfall. The hottest periods will be in mid- to late June, mid-July, and late August. September and October will see temperatures above normal in the northeast and below normal in the southwest. Rainfall will be slightly above normal.

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 2018 to October 2019

Temperature and Precipitation Chart, November 2018 to October 2019 for San Diego, CA

Reader Comments

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News Flash for SoCal - you’re NOT the only area on the map!!

Yet again SoCal thinks they ARE the only region in California included in the Farmers Almanac weather guide for Pacific Southwest Region. You might just get crazy and look at the entire region included in the Pacific Southwest map before you toss out your criticism. Farmers is generally accurate within a week or so - close enough to plan your garden planting. I know this because it has been my weather guide in superior California (meaning far northern Sacramento Valley - you know it’s where you get your WATER!!) for many, many years. Cut these guys some slack and acknowledge that geographically SoCal is just a fraction of this very important farming region. You probably need to stick with the Weather Channel.

Psychological Reasons for SoCal Negative Comments

I think a lot of these comments aren't really from frustration with the Farmer's Almanac, but with global warming and what it's doing to Southern California. The fact is, we're concerned, deeply concerned, when we don't see rain in January and February, and by extension, an end to global warming in our lifetimes. It leaves one, who lives in California, with a feeling of doom. Wishing for it to get better does not solve the problem. Governments, including our federal one, have to start taking this "new normal," as officials are calling it more often, much more seriously, and so do we, the average citizens. It's no longer a liberal left issue; the reality is here.

your predictions are ridiculously wrong

There will be no rain in California through most of February, yet you predict a lot of rain. What is your excuse for being absolutely wrong on a regular basis?

accuracy

We do not calculate our accuracy until at least the end of a season (not weekly, not monthly). And this season (winter) is not over yet. Traditionally our predictions are 80 percent accurate; sometimes more, sometimes less. If the ocean temps, jet stream/s, oscillations, and other factors would conform to our expectations, we—and every other weather prognosticator—would be 100 percent accurate all the time.

Well...not ridiculously wrong...sheeesh

I think your comment must refer to the graft at the head of these comments,
which says that February will be near NORMAL - not less, not more.

Why I moved

I was born and raised in Long Beach. After 50 years, two years ago I moved to the Portland area, I will never move back to LA! The traffic, (I drove the 405/10 interchange everyday) the people suck now and everything is brown and dead. I remember Big Bear having three feet of snow in October, they don't even get three feet in a year now. When I was a kid it used to rain and hail, not anymore. It is so green and beautiful here in Portland. We've got more rain the in last two weeks than LA in the last year!

Southern Cali

California weather, especially SoCal, is being controlled by geo-engineering. It creates these incessant high pressure domes and steers the storms (rain) up further north of our state.

I completely agree with Connie's comments.

You hit the nail on the head, Connie. Here in San Diego we are going on a year and a month without decent rainfall. The climate mafia has sealed SoCal's fate. Just look up, we get sprayed here every day, especially when precipitation should be moving in. Just look around at all of the dead and dying vegetation. A direct result of aluminum, barium, etc. poisoning from above. No more trees or animals. Many think this region is paradise. Let me say that hell might also have sunshine and palm trees, but that does not make it a nice place.

Really?

“Stormiest periods in early and late January”? Right. It’s like 65 and sunny. No rain in sight. It’s not just a problem with forecasts in So Cal, I’m in Redwood City, 20 miles south of San Francisco and north of San Jose.

SO WRONG - AGAIN

Why can't this site do a better job of predicting for SOUTHERN California? They always seem to lump us together with No Cal making our forecasts in the southland so wrong! LA, OC, San Diego, Riverside, etc. are all way far south of San Francisco, San Jose, etc. yet they keep forecasting us as one region, even though it's hundreds of miles and a very different climate...obviously.

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