A combination of a very cold airmass, a clear sky and fresh snow cover brought very cold temperatures to portions of western and central Wyoming. Many record lows for the date were set. Some all time monthly record lows were also set. Most impressive was at Worland, Wyoming, where the temperatures fell to 18 below zero, breaking the old monthly record by 14 degrees.

Cold/Wind Chill in TETON & GROS VENTRE MOUNTAINS, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures in the Jackson Valley fell as low as 19 below zero.

Cold/Wind Chill in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures in the lower elevations fell as low as 15 below zero.

Cold/Wind Chill in SOUTHEAST BIG HORN BASIN, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Worland, Wyoming airport reported a record low temperature of 18 below zero. This broke the all time October monthly record low by 14 degrees. Temperatures near Ten Sleep, Wyoming fell as low as 21 below zero.

Cold/Wind Chill in EAST SWEETWATER COUNTY, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Sweetwater County, Wyoming airport had a record low temperature of 10 below zero. This broke the all time October monthly low temperature of 8 below zero. Other temperatures further east along Interstate 80 fell as low as 19 below zero.

Cold/Wind Chill in WIND RIVER BASIN, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Riverton, Wyoming airport had a record low temperatures of 9 below zero. This tied the all time October monthly record low. Hudson, Wyoming had a low temperature of 14 below zero and Pavillion, Wyoming fell to 15 below zero.

Cold/Wind Chill in NORTH BIG HORN BASIN, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Greybull, Wyoming airport had a record low temperature of 8 below zero. This broke the all time October record low temperature of 3 degrees.

Cold/Wind Chill in LANDER FOOTHILLS, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Lander, Wyoming airport set a daily record low temperature of 8 below zero.

Cold/Wind Chill in CODY FOOTHILLS, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures in the lower elevations of Park County, Wyoming fell as low as 12 below zero, which was recorded at the Cody, Wyoming airport.

Cold/Wind Chill in SOUTHWEST BIG HORN BASIN, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Temperatures fell as low as minus 15 in the lower elevations of Hot Springs County, Wyoming, including 14 below at the Hot Springs County, Wyoming airport.

Cold/Wind Chill in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Temperatures fell as low as 13 below zero in the lower elevations of Natrona County, Wyoming, including minus 8 at the Natrona County, Wyoming airport.

Cold/Wind Chill in UPPER GREEN RIVER BASIN FOOTHILLS, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell as low as 19 below zero at Daniel, Wyoming.

Cold/Wind Chill in UPPER GREEN RIVER BASIN, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Big Piney, Wyoming airport set a record low temperature of 12 below zero.

Cold/Wind Chill in ROCK SPRINGS & GREEN RIVER, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures around western Sweetwater County, Wyoming fell to below 10 and 17 degrees below zero.

Cold/Wind Chill in SOUTH LINCOLN COUNTY, WYOMING
From 26-OCT-20 00:00:00 to 26-OCT-20 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Temperatures fell as low as 17 degrees below zero across southern Lincoln County, Wyoming.