2018 Long Range Weather Forecast for Sun Valley, NV

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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 Intermountain
DatesWeather Conditions
Jan 1-4Flurries, cold
Jan 5-11Showers, mild north; flurries south
Jan 12-17Sunny, mild north; snowstorm, then flurries, very cold central and south
Jan 18-24Snow showers, cold
Jan 25-28Showers and flurries
Jan 29-31Sunny north, snow south
Januarytemperature 31° (2° above avg. north, 4° below south)
precipitation 1.5" (avg.)

February 2018 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Feb 1-10Snowstorm, then flurries, cold
Feb 11-17Sunny, mild north; sunny, then snowstorm, cold south
Feb 18-28Showers, mild north; flurries south
Februarytemperature 35° (4° above avg. north, 2° below south)
precipitation 1.5" (avg.)

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.

Map showing Old Farmer's Almanac long range weather region number 13

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).

Intermountain Neighboring Regions

Here are the regions that neighbor the Intermountain long range weather region:

Temperature and Precipitation November 2017 to October 2018

Temperature and Precipitation Graph

Reader Comments

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Sorry but.... Wrong.

Yea I would be great if winter was like this, but it's January 18th and 51°f outside and we haven't had snow scince Christmas, and even then it wasn't much. Interesting prediction but incorrect, mabey next year.