Yellowstone National Park Forecast

FPUS55 KRIW 222007

ZFPRIW



Zone Forecast Product for Western and Central Wyoming

National Weather Service Riverton WY

204 PM MDT Wed Apr 22 2026



WYZ020-222200-

Natrona County Lower Elevations-

WYZ001-222200-

Yellowstone National Park-

Including the cities of Lake, Mammoth, and Old Faithful

204 PM MDT Wed Apr 22 2026



...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MDT

THURSDAY...



.THIS AFTERNOON...Snow showers with a chance of thunderstorms.

Snow accumulation up to 3 inches. Breezy and much cooler with

highs in the mid 30s. Southwest winds 20 to 25 mph with gusts up

to 45 mph. Chance of snow 80 percent. 

.TONIGHT...Snow showers with a slight chance of thunderstorms in

the evening, then snow showers after midnight. New snow

accumulation up to 13 inches. Breezy with lows in the upper 20s.

Southwest winds 15 to 25 mph with gusts up to 45 mph. Chance of

snow 90 percent. 

.THURSDAY...Snow showers in the morning, then snow showers with a

slight chance of thunderstorms in the afternoon. New snow

accumulation up to 3 inches. Breezy with highs in the lower 30s.

West winds 15 to 20 mph with gusts up to 35 mph. Chance of snow

90 percent. 

.THURSDAY NIGHT...Mostly cloudy. Snow showers with a slight

chance of thunderstorms in the evening, then snow showers likely

after midnight. New light snow accumulation. Cold with lows 12 to

18. Northwest winds 10 to 15 mph with gusts up to 30 mph,

becoming west after midnight. Chance of snow 90 percent. 

.FRIDAY...Snow showers. A slight chance of thunderstorms in the

afternoon. New light snow accumulation. Highs in the upper 20s.

West winds 10 to 15 mph with gusts up to 30 mph. Chance of snow

90 percent. 

.FRIDAY NIGHT...Mostly cloudy in the evening, then becoming

partly cloudy. A 40 percent chance of snow showers. Cold with

lows 10 to 15. 

.SATURDAY...Partly cloudy with a 40 percent chance of snow

showers. Highs in the upper 30s. 

.SATURDAY NIGHT...Partly cloudy in the evening, then becoming

mostly cloudy. A 40 percent chance of snow showers. Cold with

lows 16 to 22. 

.SUNDAY...Mostly cloudy. A chance of snow showers in the morning,

then snow showers with a slight chance of thunderstorms in the

afternoon. Light snow accumulation. Highs in the upper 30s.

Chance of snow 80 percent. 

.SUNDAY NIGHT...Mostly cloudy. Snow showers likely with a slight

chance of thunderstorms in the evening, then a chance of snow

showers after midnight. New light snow accumulation possible.

Lows in the lower 20s. Chance of snow 60 percent. 

.MONDAY...Mostly cloudy. Snow showers likely in the morning, then

snow showers with a slight chance of thunderstorms in the

afternoon. New light snow accumulation. Highs in the upper 30s.

Chance of snow 80 percent. 

.MONDAY NIGHT...Mostly cloudy with a chance of snow showers in

the evening, then partly cloudy after midnight. Lows in the lower

20s. Chance of snow 30 percent. 

.TUESDAY...Mostly cloudy in the morning, then becoming partly

cloudy. A chance of snow showers. A slight chance of

thunderstorms in the afternoon. Highs in the lower 40s. Chance of

snow 40 percent. 



--------------------------------