Expires:202512230300;;023377
FPUS55 KBYZ 221118
ZFPBYZ

Zone Forecast Product for South Central and Southeast Montana
National Weather Service Billings MT
416 AM MST Mon Dec 22 2025

Spot temperatures and probabilities of measurable precipitation
are for today, tonight, and Tuesday.



MTZ173-230300-
Northeastern Yellowstone-
Including the cities of Custer and Pompeys Pillar
417 AM MST Mon Dec 22 2025

.TODAY...Mostly cloudy. Warmer. Chance of rain early in the
morning, then slight chance of snow late in the morning. Slight
chance of rain in the late morning and afternoon. Highs around
50. Southwest winds 5 to 10 mph. Chance of precipitation
30 percent. 
.TONIGHT...Mostly cloudy. A 20 percent chance of rain and snow
late in the evening. Lows around 30. Light and variable winds. 
.TUESDAY...Mostly cloudy. Highs in the mid 40s. Light and
variable winds. 
.TUESDAY NIGHT...Mostly cloudy. Lows in the upper 20s. Light and
variable winds. 
.WEDNESDAY...Partly sunny. Highs in the lower 50s. South winds
5 to 10 mph. 
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain showers
overnight. Slight chance of rain and snow showers after 3 am.
Lows in the lower 30s. Chance of precipitation 20 percent. 
.CHRISTMAS DAY...Mostly cloudy with a 40 percent chance of rain
and snow showers. Colder. Highs in the lower 40s. 
.THURSDAY NIGHT...Mostly cloudy. Lows in the upper 20s. 
.FRIDAY...Partly sunny. A 20 percent chance of rain showers in
the afternoon. Highs around 50. 
.FRIDAY NIGHT...Partly cloudy. Slight chance of rain showers
early in the evening, then slight chance of rain and snow showers
late in the evening. Lows in the lower 20s. Chance of
precipitation 20 percent. 
.SATURDAY...Mostly sunny. Highs in the lower 40s. 
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 20s. 
.SUNDAY...Mostly sunny. Highs in the upper 40s. 

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