Montana Department of Transportation

Main Content

Accidents and Incidents Report

Yellowstone National Park Forecast

FPUS55 KRIW 181724
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
1023 AM MST Mon Dec 18 2017

WYZ020-182300-
Natrona County Lower Elevations-
WYZ001-182300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1023 AM MST Mon Dec 18 2017

.REST OF TODAY...Breezy. Cloudy with scattered snow showers.
Highs 21 to 27. Southwest winds 15 to 25 mph. Chance of snow
40 percent. 
.TONIGHT...Cloudy with scattered snow showers. Snow accumulation
of 1 to 2 inches. Lows 16 to 22. Southwest winds around 15 mph.
Chance of snow 50 percent. 
.TUESDAY...Cloudy with a 50 percent chance of snow. Snow
accumulation up to 1 inch. Highs 26 to 32. Southwest winds around
15 mph. 
.TUESDAY NIGHT...Cloudy. Chance of snow in the evening, then snow
likely after midnight. Snow accumulation up to 1 inch. Lows 18 to
24. Southwest winds around 15 mph. Chance of snow 70 percent. 
.WEDNESDAY...Snow. Snow accumulation of 3 to 5 inches. Highs
25 to 31. Southwest winds around 15 mph. Chance of snow
80 percent. 
.WEDNESDAY NIGHT...Colder, cloudy. Snow likely in the evening,
then chance of snow after midnight. Light snow accumulations.
Lows 2 to 8. Chance of snow 70 percent. 
.THURSDAY...Partly cloudy. Highs 14 to 20. 
.THURSDAY NIGHT...Partly cloudy with slight chance of snow in the
evening, then mostly cloudy with snow likely after midnight. Lows
1 to 7. Chance of snow 60 percent. 
.FRIDAY...Snow likely. Highs 11 to 17. Chance of snow 60 percent.
Wind chill readings 16 below to 26 below zero. 
.FRIDAY NIGHT...Colder. Cloudy with a 30 percent chance of snow.
Lows 3 below to 11 below zero. Wind chill readings 24 below to
34 below zero. 
.SATURDAY...Mostly cloudy. Highs 2 to 8. Wind chill readings
25 below to 35 below zero. 
.SATURDAY NIGHT...Colder. Partly cloudy. Lows 7 below to 17 below
zero. Wind chill readings 29 below to 39 below zero. 
.SUNDAY...Partly cloudy. Highs 3 to 9. Lowest wind chill readings
30 below to 40 below zero in the morning. 

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