2018-2019 Long Range Weather Forecast for San Luis Obispo, 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 Luis Obispo, CA

Reader Comments

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Really??? "Big outdoor party

Really??? "Big outdoor party" after a divorce? Pathetic.

Bitter sweet.

Pathetic????
You must be his X-Wife.

Nancy!!

Be nice now Nancy. Simmer down.

Really??? "Big outdoor party

I think this is a perfect way to get through a divorce. What fun.

BIG OUTDOOR DIVORCE PARTY

Now, what in the world is pathetic about having a big outdoor party after a divorce?! I would like to know because each and every year since 1990, I celebrate "my" Divorce Day! I cannot see myself mourning over a marriage we both found out was not meant to be. Therefore, hibernating in my room drenched in tears is not going to happen. Note that you posted a hater comment, and hater comments are only made by someone feeling envy for something they wish they were bold enough to do their very own self... (It's ok, we understand.)

What will the weather be like in Santa cruz California the first

What Will the weather be like the first week of January 2019 in Santa cruz California

Wedding in April versus July in Berkeley, CA

Hi,

We are planning a wedding for either April 18th or July 3rd, 2019 in Berkeley, CA. This seems to say that the summer months may be warmer than normal. Do you think it will be too hot in July for our guests who are from Ireland? As you know, many homes and buildings in the Bay Area don't have air conditioning. So we are wondering if we should switch from our July date to April. The wedding is at an outdoor/indoor venue and I'm not sure if the indoor hall has air conditioning.

Thanks for your thoughts,
Brooke

Berkeley Weather

Berkeley never gets 'hot'. Very few days in the 80's and super rare would be in the 90's. Either month is great weather. Congratulations!!

Berkeley weather

Also depends on venue. I went to a wedding at the Brazilian room in July during a heat wave. No AC. No fun, especially since i was 8 months pregnant. If there’s AC, July should be fine. April would be nice as well.

Weather in Berkeley

There is a lot less fog in April than July. We were overseas guests may appreciate sightseeing without the heavy fog

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