Yellowstone National Park Forecast

FPUS55 KRIW 151704

ZFPRIW



Zone Forecast Product for Western and Central Wyoming

National Weather Service Riverton WY

1002 AM MST Mon Dec 15 2025



WYZ020-152300-

Natrona County Lower Elevations-

WYZ001-152300-

Yellowstone National Park-

Including the cities of Lake, Mammoth, and Old Faithful

1002 AM MST Mon Dec 15 2025



.TODAY...Sunny this morning, then becoming partly cloudy. Breezy

with highs in the mid 30s. South winds around 10 mph with gusts

up to 20 mph, becoming southwest 15 to 20 mph with gusts up to

35 mph this afternoon. 

.TONIGHT...Mostly cloudy. Scattered snow showers after midnight.

Breezy with lows in the mid 20s. Southwest winds 15 to 20 mph

with gusts up to 40 mph. Chance of snow 30 percent. 

.TUESDAY...Mostly cloudy. Scattered snow showers in the morning,

then numerous snow showers in the afternoon. Snow accumulation up

to 3 inches. Breezy with highs in the mid 30s. Southwest winds

15 to 25 mph with gusts up to 40 mph. Chance of snow 60 percent. 

.TUESDAY NIGHT...Patchy blowing snow in the evening. Snow

showers. Light snow accumulation. Breezy. Near steady temperature

around 30. Southwest winds 20 to 25 mph with gusts up to 50 mph.

Chance of snow near 100 percent. 

.WEDNESDAY...Snow and rain showers in the morning, then snow

showers in the afternoon. Snow may be heavy at times in the

morning. New moderate snow accumulation. Windy with highs in the

mid 30s. Temperature falling into the lower 20s in the afternoon.

West winds 20 to 30 mph with gusts up to 55 mph. Chance of

precipitation near 100 percent. 

.WEDNESDAY NIGHT...Partly cloudy with a chance of snow showers in

the evening, then mostly cloudy after midnight. Breezy, cold with

lows 10 to 15. Chance of snow 30 percent. 

.THURSDAY...A chance of snow showers in the morning, then snow

showers in the afternoon. Moderate snow accumulation. Highs

around 30. Chance of snow 80 percent. 

.THURSDAY NIGHT...Snow showers. Snow may be heavy at times in the

evening. New moderate snow accumulation. Breezy with lows in the

lower 20s. Chance of snow 90 percent. 

.FRIDAY...Snow showers. New moderate snow accumulation. Breezy

with highs in the lower 30s. Chance of snow 80 percent. 

.FRIDAY NIGHT...Mostly cloudy with snow showers. New moderate

snow accumulation. Breezy, cold with lows 14 to 20. Chance of

snow 80 percent. 

.SATURDAY...Mostly cloudy with snow showers likely. New light

snow accumulation possible. Highs in the upper 20s. Chance of

snow 70 percent. 

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

mostly cloudy. A 30 percent chance of snow showers. Cold with

lows 10 to 20. 

.SUNDAY...Mostly cloudy with snow showers likely. Light snow

accumulation possible. Highs in the upper 20s. Chance of snow

70 percent. 



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