2018 Long Range Weather Forecast for Idaho Falls, ID

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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 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

July 2018 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Jul 1-5Sunny, hot
Jul 6-13Sunny, warm north; t-storms, cool south
Jul 14-18Sunny, cool
Jul 19-31Sunny north, a few t-storms south; hot
Julytemperature 73.5° (4° above avg. north, 3° below south)
precipitation 0.3" (0.2" below avg.)

August 2018 Long Range Weather Forecast for Intermountain
DatesWeather Conditions
Aug 1-2Sunny, hot
Aug 3-8Isolated t-storms, hot
Aug 9-13Sunny, cool north; scattered t-storms south
Aug 14-22Sunny, warm
Aug 23-26T-storms, then sunny, cool
Aug 27-31Sunny, hot
Augusttemperature 72° (avg.)
precipitation 0.5" (0.5" below 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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June

I am farming lavender in the Mission Valley 45 miles north of Missoula. My harvest season is over a week late to start compared to previous years because of the cool and very rainy weather. It feels like Portland!

Above Average

States this week it's supposed to be sunny:cool. Our local weather is predicting 101-106F for the next 3 days straight. No relief in sight for the Reno, Nevada area.

A Memorable Memorial Weekend

In Butte, MT we are seeing a first, lilacs opening by Memorial Day; typically have our last snow storm this weekend.

Above Average

Here in Reno, we are seeing 5-10 degrees above normal temps. Today is supposed to hit 90F. We see no clouds, or precipitation in sight.

Flagstaff snow dayz

Got 5” snow May 2, 2018 in Flagstaff AZ. We’re at 7000 ft elev. but on the volcano above they got 2 ft. 80 today, weird weird beginning of spring.

Wisconsin snow April 2010

Wow snow and more snow. parts of Wisconsin look like December instead of April... farmers watching out for birthing calves and others watching the fruit trees and grapes.. will we have Spring only Mother Nature knows for sure..

Snowed “south hill” Spokane

Cold, lighter snow less then 1/4 inch, just a dusting all around the area today. Currently 32* with high of 42* expected.

Under 4 feet of snow here

North Idaho, Mar 5,2018, 13f last night, 4ft snow on ground, snowed 1 inch last night. We has rain and sping like conditions 3 weeks ago only to get hammered with more snow.

Looks right to me.

In my area this is completely accurate. I love the Farmer's Almanac and have relied on it for decades. Thanks!

Feb weather

if I read this right it shows Feb 2018 as a bit warmer than usual?? On Feb 20th we are shattering the record low temp set back in the 50's....tonight's forecast -26.....hurry up summer??

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