Expires:202512211100;;950662
FPUS55 KRIW 210434
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
932 PM MST Sat Dec 20 2025


WYZ012-211100-
Teton and Gros Ventre Mountains-
932 PM MST Sat Dec 20 2025

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
MST MONDAY...

.TONIGHT...Mostly cloudy. Scattered snow showers late this
evening, then snow showers after midnight. Snow accumulation up
to 6 inches. Breezy, cold with lows 10 to 18. Temperature rising
into the mid 20s after midnight. Southwest winds 15 to 20 mph
with gusts up to 30 mph. Chance of snow 80 percent. 
.SUNDAY...Snow showers. Snow may be heavy at times. New snow
accumulation up to 18 inches. Breezy with highs in the mid 30s.
Southwest winds 15 to 20 mph. Gusts up to 40 mph in the
afternoon. Chance of snow near 100 percent. 
.SUNDAY NIGHT...Snow and rain showers. Snow may be heavy at
times. New snow accumulation up to 16 inches. Windy. Near steady
temperature in the lower 30s. Southwest winds 20 to 30 mph with
gusts up to 50 mph. Chance of precipitation near 100 percent. 
.MONDAY...Snow and rain showers in the morning, then snow showers
in the afternoon. New moderate snow accumulation. Windy with
highs in the mid 30s. Southwest winds 20 to 30 mph with gusts up
to 50 mph, diminishing to 10 to 15 mph with gusts up to 35 mph in
the afternoon. Chance of precipitation near 100 percent. 
.MONDAY NIGHT...Snow showers. New light snow accumulation. Near
steady temperature in the upper 20s. Southwest winds 10 to 15 mph
with gusts up to 25 mph. Chance of snow 90 percent. 
.TUESDAY...Cloudy. Snow showers, mainly in the morning. New
little or no snow accumulation. Highs in the mid 30s. Chance of
snow 80 percent. 
.TUESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. 
.WEDNESDAY...A chance of snow showers in the morning, then snow
and rain showers in the afternoon. Light snow accumulation.
Breezy with highs in the mid 30s. Chance of precipitation
80 percent. 
.WEDNESDAY NIGHT...Snow showers. Rain showers, mainly in the
evening. New moderate snow accumulation. Breezy with lows in the
mid 20s. Chance of precipitation near 100 percent. 
.CHRISTMAS DAY...Snow showers. New light snow accumulation. Highs
in the lower 30s. Chance of snow 80 percent. 
.THURSDAY NIGHT...Snow showers. New moderate snow accumulation.
Lows in the lower 20s. Chance of snow 90 percent. 
.FRIDAY...Snow showers in the morning, then snow showers with a
slight chance of thunderstorms in the afternoon. Snow may be
heavy at times in the morning. New moderate snow accumulation.
Breezy with highs in the upper 20s. Chance of snow 90 percent. 
.FRIDAY NIGHT...Cloudy. Snow showers likely, mainly in the
evening. New light snow accumulation possible. Cold with lows
15 to 20. Chance of snow 60 percent. 
.SATURDAY...Mostly cloudy in the morning, then clearing. A
40 percent chance of snow showers. Highs in the upper 20s. 

$$