Wyoming's Halloween forecast doesn't look so scary this year. Instead of bone-chilling cold and howling winds, All Hallows' Eve is shaping up to be the perfect end to a month of mild weather in the Cowboy State — and on a Friday, no less.
When trick-or-treaters step into the night, they might want a jacket that matches and goes over their costumes, but the weather won't scare them. There's no rain or snow in the forecast, no strong winds, and temperatures will be at or slightly above normal.
"Trick-or-treaters may have to dress up a little bit, especially in eastern Wyoming, to stay warm, but there's no looming Halloween storm," said Cowboy State Daily meteorologist Don Day. "So, that's not a bad Halloween."
Not-So-Wicked Weather
The overall forecast for Wyoming on Friday calls for sunny skies and temperatures in the high 40s and low 50s. When the sun sets around 5:55 p.m., temperatures will drop into the 20s and 30s, and the skies will start to cloud up.
"High temperatures on Halloween are within 5 degrees of normal, give or take," said Molly Gerhard with the National Weather Service office in Riverton. "Overnight lows are above normal for the entire state."
Overnight temperatures in the mid-30s are actually slightly warmer than average for Oct. 31. Even if it doesn't feel very warm, it's actually a reprieve from recent years.
Gerhard also noted that this Halloween will be drier than average. That's a stark difference from last year, when much of Wyoming saw a few inches of snow.
"You can expect temperatures to quickly drop into the 40s by 8 p.m., but that's really the main thing of note,” she said. "We don't really have any precipitation chances until Saturday morning, and that's mainly across the western mountains."
Not The Best Or The Worst
Day echoed the assessment that the weather won't be scary this Halloween. More often than not, Halloween looks more like winter than fall.
"If you look at climatology statistics, it has snowed more around Halloween than Christmas in some parts of the state," he said. "We've had a good run of mild Halloween weather in the last three or four years."
The best Halloween that Day could remember was a definite anomaly for Wyoming. Daytime highs were in the 60s with sunny skies, and trick-or-treating temperatures were still a bit chilly but far from bone-chilling.
"More often than not, we've seen bad weather on Halloween," he said. "We've had several fairly good snowstorms that may not have fallen on Halloween, but close to it. This year, we're going to be able to avoid that."
Remember November
Following Halloween, the first weekend of November should also be pretty mild weather-wise.
Gerhard said the extended forecast for the first days of November shows above-average temperatures and a higher chance of wet weather.
"The incoming wet pattern is more favorable across Yellowstone National Park and northwest Wyoming, but the milder temperatures will continue into mid-November," she said.
Wyoming's warmer than usual weather will inevitably change. Day anticipates that change will happen around mid-November, which could affect travel during the next major holiday.
"I am expecting the middle to end of November to be colder, which would include the Thanksgiving period," he said. "Based on the long-range weather models that I trust most, it'll start feeling more like winter than fall after Nov. 10."
Day's long-range forecast for the 2025-2026 winter season calls for a colder, snowier winter that could persist into spring. That should start manifesting in November.
"There should be more snow and cold this winter than last on both sides of the Continental Divide," he said. "We haven't had a good, old-fashioned Wyoming winter in a while, and this season has the potential to be that."
In the meantime, enjoy the tricks while Wyoming provides the treat of mild weather this Halloween.
"All in all, I think this is going to come together to be a pretty good Halloween," Day said. "And with it being on a Friday, I would suspect that there'll be a lot of Halloween activities going deep into the night."
This Is Halloween
Here's a sampling of what the NWS is expecting Wyoming's weather to be on Halloween night. Aside from a few windy spots and some overnight lows in the high 20s, there's nothing to be scared of in these forecasts.
• Afton: Mostly sunny to mostly cloudy, with a daytime high near 51 and an overnight low around 27
• Buffalo: Mostly sunny to partly cloudy, with a daytime high near 47 and an overnight low around 31
• Casper: Partly sunny to partly cloudy, with a daytime high near 51 and an overnight low around 32
• Cheyenne: Partly sunny to partly cloudy, with a daytime high near 49 and an overnight low around 29
• Cody: Mostly sunny to mostly cloudy, with a daytime high near 51 and an overnight low around 37
• Douglas: Partly sunny to partly cloudy, with a daytime high near 49 and an overnight low around 26
• Encampment: Partly sunny to partly cloudy, with a daytime high near 47 and an overnight low around 29
• Evanston: Mostly sunny to mostly cloudy, with a daytime high near 54 and an overnight low around 30
• Gillette: Mostly sunny to partly cloudy, with a daytime high near 45 and an overnight low around 28, with wind gusts as high as 16 mph
• Jackson: Mostly sunny to mostly cloudy, with a daytime high near 50 and an overnight low around 25
• Laramie: Partly sunny to partly cloudy, with a daytime high near 47 and an overnight low around 29
• Lusk: Partly sunny to partly cloudy, with a daytime high near 45 and an overnight low around 25
• Pinedale: Mostly sunny to partly cloudy, with a daytime high near 50 and an overnight low around 23
• Rawlins: Partly sunny to mostly cloudy, with a daytime high near 49 and an overnight low around 32
• Rock Springs: Mostly sunny to mostly cloudy, with a daytime high near 55 and an overnight low around 33 and wind gusts as high as 28 mph
• Saratoga: Partly sunny to partly cloudy, with a daytime high near 50 and an overnight low around 29
• Sheridan: Mostly sunny to mostly cloudy, with a daytime high near 49 and an overnight low around 27
• Thermopolis: Mostly sunny to partly cloudy, with a daytime high near 52 and an overnight low around 31
• Wamsutter: Mostly sunny to partly cloudy, with a daytime high near 50 and an overnight low around 30, with wind gusts as high as 21 mph
Andrew Rossi can be reached at arossi@cowboystatedaily.com.
