PNS25-72: Soliciting Comments through December 19, 2025 on the Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices.

Hazardous Weather Conditions

Winter Storm Watch in effect from December 12, 12:00 AM MST until December 13, 05:00 AM MST
Winter Weather Advisory in effect from December 11, 09:00 AM MST until December 11, 11:00 PM MST

Current conditions at

PORPHYRY (PHYM8)

Lat: 46.83821°NLon: 110.71813°WElev: 8232.0ft.

36°F

2°C

Humidity	70%
Wind Speed	SW 18 MPH
Barometer	NA
Dewpoint	27°F (-3°C)
Visibility	NA
Wind Chill	26°F (-3°C)
Last update	11 Dec 01:05 AM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

8 Miles S Neihart MT

Winter Storm Watch December 12, 12:00am until December 13, 05:00am

Winter Weather Advisory December 11, 09:00am until December 11, 11:00pm

Click here for hazard details and duration

Winter Storm Watch

Winter Weather Advisory

Overnight
Low: 35 °F
Chance
Rain/Snow and
Breezy
Thursday
High: 36 °F⇓
Breezy.
Snow/Sleet
then Snow
Thursday Night
Low: 26 °F
Heavy Snow
Friday
High: 32 °F
Heavy Snow
Friday Night
Low: 23 °F
Chance Snow
Saturday
High: 34 °F
Chance Snow
then Partly
Sunny
Saturday Night
Low: 27 °F
Partly Cloudy
Sunday
High: 38 °F
Partly Sunny
Sunday Night
Low: 27 °F
Mostly Cloudy

Detailed Forecast

Overnight

A slight chance of rain and snow between 2am and 3am, then a chance of snow. Cloudy, with a low around 35. Breezy, with a west southwest wind around 26 mph, with gusts as high as 41 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Thursday

Snow before 11am, then snow, possibly mixed with sleet between 11am and noon, then snow after noon. Temperature falling to around 28 by 5pm. Breezy, with a west wind 20 to 25 mph decreasing to 14 to 19 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 3 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 26. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Friday

Snow. The snow could be heavy at times. High near 32. West wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Friday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 23. West wind 10 to 13 mph, with gusts as high as 31 mph. New snow accumulation of less than one inch possible.

Saturday

A 30 percent chance of snow before 11am. Partly sunny, with a high near 34. West southwest wind 8 to 10 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 27. Southwest wind around 10 mph, with gusts as high as 22 mph.

Sunday

Partly sunny, with a high near 38. Southwest wind around 11 mph, with gusts as high as 25 mph.

Sunday Night

Mostly cloudy, with a low around 27.

Monday

Partly sunny, with a high near 37.

Monday Night

A slight chance of snow. Mostly cloudy, with a low around 28.

Tuesday

A chance of snow. Partly sunny, with a high near 34.