Expires:202512211100;;963968
FPUS55 KRIW 210934
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
232 AM MST Sun Dec 21 2025


WYZ022-211100-
Casper Mountain-
232 AM MST Sun Dec 21 2025

.REST OF TONIGHT...Mostly cloudy and breezy. Lows in the lower
20s. Southwest winds 15 to 20 mph with gusts up to 35 mph. 
.SUNDAY...Mostly cloudy with a chance of snow showers in the
morning, then partly cloudy in the afternoon. Windy with highs in
the upper 40s. Southwest winds 25 to 35 mph. Gusts up to 50 mph,
increasing to 60 mph in the afternoon. Chance of snow 30 percent.
.SUNDAY NIGHT...Partly cloudy and windy. Lows in the upper 30s.
Southwest winds 25 to 35 mph with gusts up to 60 mph. 
.MONDAY...Mostly sunny and windy. Highs in the upper 40s.
Southwest winds 20 to 30 mph. Gusts up to 55 mph, decreasing to
45 mph in the afternoon. 
.MONDAY NIGHT...Partly cloudy and breezy. Lows in the upper 30s.
Southwest winds 15 to 20 mph with gusts up to 35 mph. 
.TUESDAY...Partly cloudy and breezy. Highs in the lower 50s. 
.TUESDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Breezy with lows around 40. 
.WEDNESDAY...Mostly sunny in the morning, then becoming partly
cloudy. Windy with highs around 50. 
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then partly
cloudy with a slight chance of rain showers after midnight. Windy
with lows in the upper 30s. Chance of rain 20 percent. 
.CHRISTMAS DAY...Partly cloudy in the morning, then clearing. A
slight chance of rain and snow showers. Breezy with highs in the
mid 40s. Chance of precipitation 20 percent. 
.THURSDAY NIGHT...Partly cloudy with a slight chance of rain and
snow showers. Breezy with lows in the mid 30s. Chance of
precipitation 20 percent. 
.FRIDAY...Partly cloudy in the morning, then becoming mostly
cloudy. A slight chance of rain showers in the morning. A slight
chance of snow showers. Breezy with highs in the lower 40s.
Chance of precipitation 20 percent. 
.FRIDAY NIGHT...Mostly cloudy with a 20 percent chance of snow
showers. Breezy with lows in the upper 20s. 
.SATURDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 40. 

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