2019-2020 Long Range Weather Forecast for Rock Springs, WY

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 2020 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

December 2019 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Dec 1-10Periods of rain and snow north, sunny south; mild
Dec 11-15Rain and snow showers, mild
Dec 16-25Snowy periods, cold
Dec 26-31Snowy north, sunny south; turning milder
Decembertemperature 33° (3° above avg. north, 3° below south)
precipitation 1.5" (avg.)

January 2020 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Jan 1-7Snowstorm, then flurries, cold
Jan 8-13Sunny, mild
Jan 14-19Snowy periods north, sunny south; mild
Jan 20-24Snow showers, cold
Jan 25-31Snowy periods, cold
Januarytemperature 30° (2° below avg.)
precipitation 1.5" (1" above avg. north, 0.5" below south)

Annual Weather Summary
November 2019 to October 2020

Winter temperatures will be above normal, on average, in the north and below average in central and southern portions of the region, with the coldest periods in mid- to late December and early January and from late January through the first half of February. Precipitation and snowfall will be above normal, with the snowiest periods in mid- to late December, early and late January, early February, and early and late March. April and May will be cooler than normal, with near-normal precipitation. Summer will be slightly cooler and rainier than normal, with the hottest period from late June through early July. September and October will be warmer than normal, with below-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 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Rock Springs, WY

Reader Comments

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Snow

I live in the Tri-Cities, and the first time it snowed was on Dec. 1. None of these predictions are really right.

Snow

Any chance for snow for Christmas????

Winter 2019/2020

I hear on tv that calif.ariz.nev.utah.oregon.wash state. Others will not see winter it is expected to alot warmer than normal above average no rain or snow in forecast at all mostly sunny clear skies eastern part of u.s. will be below average colder.. warmer here. In the west it will start getting cool at nights but has been on 20s at night will push Into low 40s warm means west could see Indian summer returns to states due to no el nino or la nina it's dead wont produce anything stay clear skies all the way into summer 2020 not a drop of bv rain or snow at all

So. Cal. Mountains

I live in southern California, but 7000 feet up, in the mountains. It helps to know the rainfall expected "down the hill," but I'd love to see what we're expecting in regards to snow up here--not specific inches, or anything, but whether to expect a "bad winter" or not. Any way to judge our snowfall from the rainfall down below us???

NOAA and this were wrong again for fall in the intermountain reg

So far so wrong. Both NOAA and Farmers Almanac had September- first week of October totally wrong and it's going to continue to be wrong. Both predicted warmer and drier than normal in the Pacific Northwest and the Rocky mountain ( inner mountain regions including Montana) and it's been anything but. Montana, Idaho, parts of Washington, Wyoming and the Dakota's are in a deep freeze as of October 8th and have had two record breaking winter storms already. Totally wrong.Why bother?

NOAA and Farmers Almanac are accurate

Frank Fontaine I am not sure where you are getting your info. I am not sure where you live either. I am here in Idaho I wish winter was starting as in snow coming and not just high in the mountains. We are having rainy days. No snow here yet, we have had a few frosts but nothing more than that. I have gone by Farmers Almanac and NOAA for my weather I have gotten accurate weather. I am not sure of this deep freeze you are talking about maybe it is happening in a different part of Idaho than what I am in. The northern part is still green and beautiful.

Early winter storms

Where in Idaho are you is the question. Here in Spokane we got snow in September and again in October and had freezes as low as 13°f. North Idaho got same. Frank's information is coming from his direct experience, which matches mine.

Frank I AGREE

Frank your comment was 100% correct!!

Beaver Dams

I went camping earlier (A few months back) and saw a beaver house by the water, it's layers were super thick this year, will it be a harsh winter this year?
- Jayden Smith

In North Idaho, the weather

In North Idaho, the weather was exactly how Frank Fontaine described. Two snow storms, one in late September and the other just a week and a half later. I’ve heard anywhere from expecting 200” of snow for Coeur d Alene area, to warmer than normal temps, to average precipitation. It really is just a guessing game at this point.

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