2018 Long Range Weather Forecast for Antioch, CA

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See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our 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. If your city is located inside a region, the region's forecast will apply to you.

Free 2-Month Weather Forecast

January 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Jan 1-7Rain north, some heavy; showers, warm south
Jan 8-14Rainy periods, cool
Jan 15-17Sunny, cool
Jan 18-26Rainy periods, cool
Jan 27-31Rain, some heavy; mild
Januarytemperature 53° (1° below avg.)
precipitation 4" (3" above avg. north, 1" below south)

February 2018 Long Range Weather Forecast for Pacific Southwest
DatesWeather Conditions
Feb 1-8Rainy periods, cool
Feb 9-15Sunny, turning warm
Feb 16-28Rainy periods; warm, then cool
Februarytemperature 55° (avg.)
precipitation 3.5" (2" above avg. north, 1" below south)

Annual Weather Summary: November 2017 to October 2018

Winter will be cooler than normal, with rainfall above normal in the north and near normal in the south. The coldest periods will occur from late November into early December and in early February. Mountain snows will be above normal, with the stormiest periods in early to mid-November and early and late January. April and May will be slightly drier than normal. Temperatures will be below normal near the coast and above normal inland. Summer will be cooler than normal, with near-normal rainfall. The hottest periods will be from late May into early June and in mid-June and mid-July. September and October will have near-normal temperatures, 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 2017 to October 2018

Temperature and Precipitation Graph

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