2019-2020 Long Range Weather Forecast for Idaho Falls, ID

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

September 2019 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Sep 1-5Showers, cool north; sunny, hot south
Sep 6-9Sunny, cool
Sep 10-18Sunny, warm north; scattered t-storms, cool south
Sep 19-24Isolated t-storms, warm
Sep 25-30Sunny, chilly
Septembertemperature 62° (avg.)
precipitation 0.5" (0.5" below avg.)

October 2019 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Oct 1-5A few showers, cool
Oct 6-13Sunny, warm
Oct 14-19Sunny north, showers south; warm
Oct 20-23Showers north, snowstorm south
Oct 24-31Rainy periods, cool
Octobertemperature 53° (2° above avg.)
precipitation 1.5" (0.5" above avg.)

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 Idaho Falls, ID

Reader Comments

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Well I guess we shouldn't listen to your forcast

Intermountain precipitation for September "0.5" Actual: 10/09/19 1.78"; 10/ 11/ 2019 3.56" OOOOPS missed that one!

Snow

I love the farmers almanac weather predictions but the only thing I wish it had was a prediction for the amount of snow we might get. That would be awesome.

Snow Know

The Editors's picture

Hi, Chelsea: Thanks for this comment. With our forecasts, you can find out when we expect the heaviest snows to fall, but we have no way to predict the actual totals—right now. But you can be sure that if there is a way, we will find it, and you will be the first to know! Well, you and 3 million others. Thanks again—that would indeed be awesome!

Intermountain region

I have a real concern about your weather forecasts for the intermountain region. Back in the 1800s perhaps people in New England simply looked at this area as an amorphous "out west" and were not concerned with what may be happening to a few Indians and trappers 2000 miles away. So, to your early editors there was no difference between Fort Boise and Fort Tuscon. But this needs to change. The climactic difference between Flagstaff and Ontario, Oregon are never even remotely similar. Northern Idaho has completely different climate than Virginia City. Your forcast map covers an area over 1000 miles long and 800 miles wide. What you have now was "the Intermountain Region" needs to be divided into at least 4 different regions to even approach a scintilla of accuracy. Thanks for listening.

Mountain Man

The Editors's picture

Hi, Steve: Thank you for this observation. Your points are very well taken and apply to many more regions than just the Intermountain, as you no doubt realize. We are constantly looking at ways to make our forecasts more localized, and comments like yours are always taken to heart and appreciated. Thanks again!

Change in Weather Spokane/ Inland NW

My office faces huge Oak trees. Today I noticed the tops of the trees are changing for fall. Our weather has been mild & we've had more rain than normal so the trees aren't dry. There is a fir tree that's loaded with pine cones...It hasn't been this loaded for min of 5 years. My coworker went outside & noticed that the tops several oak trees are changing too. This change normally occurs September / October. I wonder if we're going to have a harsh winter??

OFA Services

Thank You, OFA! I truly appreciate your endeavour to provide weather data, gardening info, & all the wonderful information OFA shares! I agree people should not use OFA as a complaint board! The people complaining, have they paid for a specific service, that can be disputed in a litigation forum? I think NOT! OFA is not a platform to waste time, reading a ridiculous complaint! Respectfully, R.M. Villa, Blackfoot~Cree Nations Elder, Missoula, MT, USA.

forecasts

I love weather watching! My Dad was a farmer and weather watcher. He's gone and how I miss sharing Nature's awesome power and the many lessons she brings with weather. His first lesson if you want to know what's happening with the weather for the day just look out the window and remember betting your life on a forecast is like jumping off a bridge and not knowing if the water deep enough. We can't complain about the changing weather because Nature is like us ladies, entitled to change our minds at any given moment. We so enjoy visiting your beautiful Blackfoot Nation in Montana, where we can truly see powerful and rapid weather changes. We've been visiting twice a year for decades.

forecasts

I love weather watching! My Dad was a farmer and weather watcher. He's gone and how I miss sharing Nature's awesome power and the many lessons she brings with weather. His first lesson if you want to know what's happening with the weather for the day just look out the window and remember betting your life on a forecast is like jumping off a bridge and not knowing if the water deep enough. We can't complain about the changing weather because Nature is like us ladies, entitled to change our minds at any given moment. We so enjoy visiting your beautiful Blackfoot Nation in Montana, where we can truly see powerful and rapid weather changes. We've been visiting twice a year for decades.

forecasts

I love weather watching! My Dad was a farmer and weather watcher. He's gone and how I miss sharing Nature's awesome power and the many lessons she brings with weather. His first lesson if you want to know what's happening with the weather for the day just look out the window and remember betting your life on a forecast is like jumping off a bridge and not knowing if the water deep enough. We can't complain about the changing weather because Nature is like us ladies, entitled to change our minds at any given moment. We so enjoy visiting your beautiful Blackfoot Nation in Montana, where we can truly see powerful and rapid weather changes. We've been visiting twice a year for decades.

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