2020 Long Range Weather Forecast for Gillette, 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

July 2020 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Jul 1-9Isolated t-storms; turning hot north, warm south
Jul 10-15A few t-storms, warm
Jul 16-19Sunny, hot north; t-storms south
Jul 20-23Scattered t-storms, hot
Jul 24-28Sunny north, t-storms south; cool
Jul 29-31Sunny, hot
Julytemperature 71° (1° above avg. north, 3° below south)
precipitation 1.5" (0.5" below avg.)

August 2020 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Aug 1-5Sunny, warm
Aug 6-11Rainy periods, cool
Aug 12-19A few showers, cool north; sunny, hot south
Aug 20-31Sunny, hot east; scattered t-storms, cool west
Augusttemperature 72° (1° above avg.)
precipitation 1" (1" below avg.)

Annual Weather Summary
November 2019 to October 2020

Winter will be milder than normal in the north and colder than normal in the south, with slightly above-normal precipitation. The coldest periods will be in mid-December and early January and from late January into mid-February. Snowfall will be above normal in the north and below normal in the south, with the snowiest periods in early January, early to mid-February, and early March. April and May will be cooler than normal, with precipitation mostly above normal. Summer temps will be above normal in the north and below normal in the south, with the hottest spells in late June, mid- and late July, and mid-August. It will be drier than normal. September and October will have above-normal temperatures and below-normal precipitation.

Map showing Old Farmer's Almanac long range weather region number 12

About the High Plains Region

The High Plains long range weather region includes all or part of the following states: COLORADO (Aurora, Colorado Springs, Denver, Fort Collins, Lakewood), KANSAS (Dodge City, Garden City, Liberal), MONTANA (Billings, Great Falls), NEBRASKA (Kearney, Lexington, North Platte, Scottsbluff), NEW MEXICO (Clovis, Portales), NORTH DAKOTA (Bismarck, Dickinson, Mandan, Minot, Williston), OKLAHOMA (Guymon), SOUTH DAKOTA (Pierre, Rapid City), TEXAS (Amarillo, Borger, Dumas, Hereford, Pampa), WYOMING (Casper, Cheyenne, Gillette, Sheridan).

High Plains Neighboring Regions

Here are the regions that neighbor the High Plains long range weather region:

Temperature and Precipitation November 2019 to October 2020

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

Reader Comments

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April wedding

We are getting married April 20th around pikes peak area. I assume there will probably be some snow, what are the temperatures going to be like? Thank you so much!

Hail - Denver

What does the hail season 2020 look like for Colorado ? More / larger hail?

Flying to Denver airport on

Flying to Denver airport on the 18th to the 22nd? How is driving conditions looking for that area?

Northern and Southern High Plains

Which states do you consider to be North High Plains and which are South? I am in Scottsbluff, NE area and not sure where we fit into the forecasts for this winter.

Wedding May 17 2020 for wedding?

Hi, what do you think the weather will be like May 17th? We can pick May 9th too. Thanks!

Weather February 7, 2020 week Lakewood co

I'm having surgery the week of February 5th, what will weather be?

Laporte , CO April 3-6, 2020

Weather for those dates? Wedding will be then!! TIA

Nov 26-Dec 2

I'm making a round trip from St Louis to Salt Lake City, via Denver, and back on Dec 2nd. Expected weather between Denver and SLC both ways? Thanks!

November 2019 in Colorado

Hi. My family is planning it's first ever vacation out west beginning around November 21 through the end of the month. We would like to do a road trip between Denver and Las Vegas, but are unsure which city to start in without knowing what kind of weather to expect. If the weather in Colorado is going to be rough, we thought we would just us LV as a starting point and go in a different direction. Can you tell me what to expect in and around Denver in late November? Many thanks.

March 2020 Wedding

Hi There! I am getting married March 14, 2020 in Littleton, what do you think the weather will be like? Thanks!

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