2020 Long Range Weather Forecast for Casper, 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 2021 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

September 2020 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Sep 1-2Sunny, hot
Sep 3-10A few t-storms, cool
Sep 11-18Sunny; warm north, cool south
Sep 19-24Showers, cool
Sep 25-30Sunny, warm
Septembertemperature 60° (1° below avg.)
precipitation 0.5" (1" below avg.)

October 2020 Long Range Weather Forecast for High Plains
DatesWeather Conditions
Oct 1-7Rain and snow showers, chilly north; sunny, warm south
Oct 8-12Sunny, warm
Oct 13-16Rain and snow
Oct 17-23Sunny, mild
Oct 24-25Sunny north, rain south; mild
Oct 26-31Sunny, warm
Octobertemperature 53° (4° above avg.)
precipitation 1" (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 Casper, WY

Reader Comments

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DRIVING through MOUNTAINS early NOV 2020m

I’m helping someone move from Denver CO to Los Angeles CA in NOVEMBER 2020. Are you able to tell me what to expect as we’re driving thru mountains?

lighting bugs

Is there any folk lore about a profusion on lighting bugs this summer?

Lady Bugs

Is there any old wives tales about a profusion of lady bugs this summer?

Weather

Planning a wedding for the end of September 2020 located in Clark, WY! Any thoughts on what the weather will be like? Any wind or precipitation? Thanks!

Wedding Thoughts

James...October in Denver is Heavenly!!! Warm 80's daytime and mild nights around 50 degrees. The days are sunny! I love Denver weather...I have lived here for 45 yrs. The fall in Denver is magical. The leaves are turning is it always nice and dry. It almost never rains in October. Now towards the end of the month you can get a snow storm. It will almost always freeze once before the end of October, which ruins my gardening. Then it goes right back to Sunny days and gradual cooling of days to the 70s by Thanksgiving. But...you can get snow any time. When it does snow, it will normally go right back to sunny days. Honestly... it kind of gets boring. But it is beautiful here in the fall. Colorado Springs I know it can be a bit cooler because the city is right up against the mountains. But...pick Denver!!! You will love it here!
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TO: Wedding Thoughts

Well, you know this winter 2019-2020 has been extremely mild in Denver so this year is an anomaly from the normal. With that being said, NORMALLY it is still hot until about November 1st. Around November 1st, it starts getting cold and sometimes REALLY COLD when snowstorms begin to come through in November. In November, it is a mixture of mildly cold days and super cold days..

Wedding Thoughts

Hello all! My fiancé and I are trying to plan a wedding in Colorado (littleton/Colorado springs area) and are wondering what y'all think the weather will be like in October and November? Thank you so much!

Getting married outdoors April 19, 2020

The location is Castlewood Canyon State Park between Denver and Colorado Springs, CO (NOT mountainous). Can you give me an idea of what to expect in terms of temperature and precipitation? Thanks!

Getting married February 29, 2020

I’m getting married outside by The Royal Gorge on February 29, 2020. Will there be snow and what kind of temperature should we expect to see?

Mid march Denver

First time to Colorado, will be in Denver mid-march for about 5-6 days. What are the chances of snow (Florida girl here, need to be prepared!)?

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