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

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)

November 2020 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Nov 1-8Rain, then sunny, cool north; sunny, turning warm south
Nov 9-15Scattered showers, cool
Nov 16-19Sunny, warm
Nov 20-30Rain, then sunny, cool
Novembertemperature 56° (2° below avg.)
precipitation 0.5" (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 Pacific Southwest Region

Reader Comments

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No longer so easy to forecast, is it? This prediction is way off. Last week the SF bay area and northern CA had record breaking heat.

If you’re in Temecula here’s the reason it may not snow

So if it’s not snowing in your area the reasoning is 1. It is a hot place 2. It’s not cold enough 3. It needs to rain but if it’s at 100° it will not rain. That’s the reasoning don’t be mad because of that if the weather lies it doesn’t mean you can say Ugh Here’s what you should do if you really want it to snow 1. Go to a cold city or The mountains 2. Wait until December The weather can change 3. Fix your issues and just have fun with your day. That’s how If you say I’m lying I’m just giving you an example Bye.

In my city it might snow, But

In my city it might snow, But if it’s true I’m going to freak outs And play in the snow but if you are all in a different country like Los Angeles or New Mexico That’s all right I hope you all get snow to And if you get snow I wish you the best of luck And don’t be mad if it doesn’t snow I want to make your day happy an unique and flexible so yeah. Farmers Is a great Website And it tells the truth on whether it will be snowing Or diff kinds but I hope you enjoy the snow when it comes byee.

yay its gonna snow

yay its gonna snow


Change is just that, change. Climate change doesn’t mean hotter. It means more extreme. Extremes are not good for flora and fauna that have co-evolved with a “normal” climate. What we experience today is not normal, thus why we are seeing the greatest mass extinction in the history of our planet. I realize most of you are not scientists, that said you should listen to the people who are. Science does get public funding, but I can attest that no scientist gets rich on gi ring the most grime news. Science has no agenda except fact. Take it for what it is. You would not tell your doctor he is wrong about your cancer diagnosis, you’d ask for another opinion. Just realize you have to ask another qualified person. Science is credible wether you understand it or not. In closing, your belief is irrelevant to fact. Just because your beliefs are compromised by fact does not change fact....

weather is normal for here

Our weather is a little crazy in the campfire area. and we are northern california. in the foothills. because all the trees are gone. the valley heat and smog now come up the mountain. makes it gritty. which we are not use to. But our weather her is normal for what the almanac predicts and what we have seen in other years. ( I'm third generation.). as to climate change. in the 70s when I studied weather in college. we called it the urban Island effect. and it is reversible, with forethought. look how the air cleared in Japan, and china, when the factories were slowed down due to the virus. Don't be afraid. things change, But they stay the same. get involved, stay positive. Keep up the good work, farmers almanac. thanks from the moutain. Debra

Thank you, Farmers Almanac!

As usual, you are so right on! It was actually COLD way further into the season than usual this year. I'm in the Southern Central valley and usually my heavy blanket is exchanged for just a sheet in early June. This year I needed my blanket until only a couple weeks ago, early July! I really hope your forecast continues to be correct and it is cooler than usual in September and October. I can't stand the heat!

For those trying to use the cooler weather here to discredit "Global warming," please educate yourselves. The earth in general is heating up consistently. That change is causing CLIMATE CHANGE, which is causing major weather and climate disruptions. Those are facts, like it or not.

Pretty accurate as usual

They are pretty spot on for north of San Diego inland. It did rain A. LOT at the end of Feb into early March and then some mire in late March. We were all stuck inside anyway that’s to COVUD but the rain made it seem more dire. But I love the rain so bring it on! So far they are on target for summer and mid July does look to be a hot one. Hopefully they are right about Sept and Oct being cooler. I hate the Indian Summers out here.

yea, it's been cold

I also agree that Los Angeles has been far colder than it used to be. Some parts of L.A got snow for the first time in 50 years just last year in February 2019. Not to mention the bomb cyclone that came through in November and dropped nearly half a foot of snow in Lancaster and elevated parts of L.A. 2020 so far has just been fairly dry rather than hot, May and June did have some heatwaves but nothing like some summers have done. While global warming may be a threat it's definitely not this world ending catastrophe many alarmists make it out be. In fact Co2 doesn't even hold heat for that long. But either way winter 2020-2021 doesn't look like it's going to be much warmer. We will have to wait and see.


I've lived in LA for over 30 years. I've noticed the temperature getting colder, not warmer. In fact, we've had record breaking long cold spells in the past decade. We're into July and I'm still waiting for summer to arrive. The almanac confirms we've been experiencing below average temperatures. I'm still waiting for global warming to happen. We could use a little of it now.