2018 Long Range Weather Forecast for San Luis Obispo, 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

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)

November 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Nov 1-6Rainy north, sunny south; cool
Nov 7-8Sunny, cool
Nov 9-17Rainy periods, cool
Nov 18-21Showers, cool
Nov 22-24Rain, heavy north
Nov 25-30Sunny, cool
Novembertemperature 57° (1° below avg.)
precipitation 4.5" (3" above avg.)

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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October 5th 2019 in Camarillo

October 5th 2019 in Camarillo for a wedding, thoughts?


Should be a nice day for a wedding. Camarillo is beautiful!

Carmel ca weather March 30, 2019

What is expected 3/30/2019 in Carmel, CA ? For outdoor wedding?


Thoughts on weather for a wedding October 5, 2019 later afternoon in southern CA


It will be sunny with scattered clouds. High of 72F.

October- my favorite month of

October- my favorite month of the year. ..most likely warm and dry in the day and slightly cooler night, but not cold. Quite possibly Santa Ana winds and brush fires in the foothills.

This October (2018), however, has been incredibly uncharacteristic with two freak rain storms thus far.. no complaints here, though. I love heavy rain and lightening storms!

Weather in Laguna CA - April 6th 2019??

Having a wedding in Laguna Ca April 6th 2019. WEATHER??? Later afternoon into the evening outdoors.


Ya never know, April can be iffy in So Cal, even along the coastline. Though less chance of rain at the beach than if you were to get married further inland, I think.

Please lend your expertise

Can you help predict the weather forecast, especially for precipitation, in California's Capay Valley in late April/May 2019? Another outdoor wedding.

April 6 2019

Having an outdoor wedding April 6th. What is the weather forecast? Please please please tell me dry!