2018-2019 Long Range Weather Forecast for San Francisco, CA

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

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

Free 2-Month Weather Forecast

December 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Dec 1-3Sunny; cool north, warm south
Dec 4-10Rainy periods north, sunny south; mild
Dec 11-18A few showers, mild
Dec 19-23Rain north, sprinkles south; mild
Dec 24-31Rain, some heavy; chilly
Decembertemperature 55° (0.5° below avg. coast, 2° above inland)
precipitation 1" (1" below avg.)

January 2019 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Jan 1-3Rainy periods, cool
Jan 4-11Rainy periods north, sunny south; mild
Jan 12-13Showers
Jan 14-23Sunny, cool
Jan 24-31Rain, then sunny, mild
Januarytemperature 54° (avg.)
precipitation 4" (3.5" above avg. north, 1.5" 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 Francisco, CA

Reader Comments

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Climate change

We they say man made climate change what they really mean is military industrial complex geoengineering. If they don't
stop soon we are all screwed. If it's not already to late.

Rain in Northern California

Holy mackerel! This is the driest fall/winter I’ve seen for a very long time. I’m afraid we are in big trouble with our lack of rain. The animals, forrest and Human survival depends on rain. Can’t they ‘chem-trail’ clouds that will produce rain here?! They’re doing the trails anyway. Why not HELP us all out?! Any answer on this would be appreciated. It’s doable- it’s been proven!

Rain and Water

Be prepared for paying much more for water in the future. I like to keep everything green, unlike many of my neighbors who have let all landscaping just die--GROSS, and such an eyesore!! If you do not want to pay for water--just move to a place where it is just hot and dry and only cactus, rocks, and tumbleweeds! I am a San Diego native, and I have just bcome accustomed to the fact, the weather is changing-- hotter and drier. I wish others would just accept this sad fact--and stop allowing everything to just die all around them, waiting for rain!

Chem-trail

I think you are confusing “chem-trail” for cloud seeding. Chem-trails are water vapors reacting with the heat and chemical exhaust from the airplane’s engine, while cloud seeding is the dispersion of silver iodide or dry ice in the air to affect change in the clouds to produce more rain in a specific region.

Hey y'all! El nino or el Nina really going to hit San Diego?

Ok I'm a weather junkie! I love crazy weather I hate how sunny it is in San Diego! My question is......... do we have a el nino really coming up? Like I need rain! Is San Diego going to get before or after thanksgiving? I seen on Facebook San Diego isn't looking good for a el nino or el Nina. I have my fingers crossed we have a strong el nino making it's way! Please let me know if anyone has a time frame or know if it's even going to happen. Thanks:)

Niña is a feminine word, “La

Niña is a feminine word, “La niña” not el.

El Niño

We, and the National Weather Service, are predicting a weak El Niño.

No rain in the valley

No rain in October and we're now in November I live in Modesto California and it hasn't rained I'm kind of worried. My question is, is the government messing with our weather? Or are we going through major climate change? It seems to me like the whole world is changing and not for the good

Any rain between Nov 28th and

Any rain between Nov 28th and Dec 4th for Los Angeles/Hollywood area ?

The weather and climate change

Our weather is normal cycling. We’ve had several ice ages. For 5 billion years we’ve had cycles. Don’t buy in to all the hysteria. You’ll be dead and long forgotten before humanity is challenged by weather changes.

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