2020-2021 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

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)

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.)

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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the Best time to see the Falls is May to June... I would go in May... the will be flowing well after that is get less very quickly. there is a website for Yosemite that will have more information and lots of pictures... Don't forget to see the Giant Sequoias, They are in the same area just a short distance away. Also in Kings Canyon Nation Park.. Grant Grove. Enjoy...

Weather, climate, change/no change man made or not

I read lots of stuff from all sorts of sources, from "shlock" to peer reviewed journals, and while I think this came out about a year ago in "Nature", I am not positive as I tossed the magazine before I copied the article; but the article stated that at least five planets are warming - Mercury, Venus, Earth, Mars and Jupiter. Because the first two are sunward of us and solar winds blow out from the sun past them to Earth, etc., I think that is pretty good proof that, while we are not the best stewards of the planet, and can/must do better, we are not the primary cause of global warming. By the way the easiest way to cool the planet (which as an asthmatic, who loves warm weather I do not want) is just to pollute the air more, see studies on temperature drops after major volcanic eruptions. The most easily researched is the early 19th century "Year without a Summer", following the relatively small eruption of an Italian volcano. We are also in a dither about carbon dioxide, which people and animals exhale, we just need to plant more greenery as plants take in CO2 and release oxygen. Also, despite the rantings about methane levels it appears from the most recent studies that that is a result of warming, not a cause, and methane deteriorates rapidly, anyway. By the way, when did cows become the bad guys, I have found most of them to be very sweet.

I think it should not be raining so much for so long for four mo

I think it should not be raining for so many days. It is getting very tiring for people in Modesto California....

Love/hate rain

I agree that the rain for us here in California is at irritating levels now but thank God for the 2 inches above normal because 3 years ago I can not tell you how sad, with tears, I was when I saw the docks hanging down the side of the embankments of the lake as we were going past Mt. Shasta's area. The water levels were 15 to 20 feet from the end of the dock to the actual water line. I grew and lived in Washington state,say no more...

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 !!