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How to Read Long Range Weather Forecasts
Our long-range forecasts show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area? Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.
Here on Almanac.com, we provide free long-range forecasts for the next 30 to 60 days covering U.S. and Canadian regions. Find all 12 months of predictions in the annual Old Farmer's Almanac.
Free 2-Month Weather Forecast
DECEMBER 2017: temperature 28° (5° below avg.); precipitation 2.5" (avg. north, 2" above south); Dec 1-4: Flurries north, snowstorm south; frigid; Dec 5-8: Snow showers, frigid; Dec 9-20: Rainy, mild north; flurries, cold south; Dec 21-26: Flurries, mild north; heavy snow, then flurries, cold south; Dec 27-31: Snow, then flurries, very cold.
JANUARY 2018: temperature 31° (2° above avg. north, 4° below south); precipitation 1.5" (avg.); Jan 1-4: Flurries, cold; Jan 5-11: Showers, mild north; flurries south; Jan 12-17: Sunny, mild north; snowstorm, then flurries, very cold central and south; Jan 18-24: Snow showers, cold; Jan 25-28: Showers and flurries; Jan 29-31: Sunny north, snow south.
Annual Weather Summary: November 2017 to October 2018
Winter will be colder than normal, especially in the south, with the coldest periods from late November into early December and in late December, mid-January, and early February. Precipitation will be slightly below normal in the north and above in the south, with above-normal snowfall in both. The snowiest periods will be in early and mid- to late December, mid-January, early and mid-February, and early March. April and May will be warmer and slightly drier than normal. Summer will be drier than normal, with temperatures warmer than normal in the north and cooler in the south. The hottest periods will be in late June, early and late July, and early and late August. September and October will be cooler than normal, with above-normal precipitation.
About the Intermountain Region
The Intermountain long range weather region includes all or part of the following states: ARIZONA (Flagstaff, Kayenta, Page, Tuba City, Winslow), CALIFORNIA (Cedarville, Davis Creek, Eagleville, Fort Bidwell, Lake City), COLORADO (Aurora, Colorado Springs, Denver, Fort Collins, Lakewood), IDAHO (Boise, Idaho Falls, Meridian, Nampa, Pocatello), MONTANA (Bozeman, Butte, Helena, Kalispell, Missoula), NEVADA (Carson City, Elko, Reno, Sparks, Sun Valley), NEW MEXICO (Angel Fire, Chama, Dulce, Questa, Springer), OREGON (Hermiston, La Grande, Ontario, Pendleton, The Dalles), UTAH (Ogden, Orem, Provo, Salt Lake City, West Valley City), WASHINGTON (Kennewick, Pasco, Richland, Spokane, Yakima), WYOMING (Casper, Evanston, Green River, Laramie, Rock Springs).