FPUS65 KTFX 130509
AFPTFX

Central and Southwest Montana Area Forecast
National Weather Service Great Falls MT
1108 PM MDT Tue May 12 2026

MTZ301>314-316>318-131200-
Central Montana-
National Weather Service Great Falls MT
1108 PM MDT Tue May 12 2026

...HIGH WIND WATCH NOW IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY EVENING FOR East Glacier Park Region...Northern High
Plains...Eastern Glacier, Western Toole, and Central
Pondera...Southern Rocky Mountain Front...Southern High Plains...
...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH THURSDAY AFTERNOON FOR Eastern Toole and
Liberty...Cascade County below 5000ft...Judith Basin County and
Judith Gap...
...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH THURSDAY EVENING FOR Hill County...Northern Blaine
County...Western and Central Chouteau County...Bears Paw
Mountains and Southern Blaine...Fergus County below
4500ft...Snowy and Judith Mountains...

.REST OF TONIGHT...Partly cloudy. Slight chance of rain showers
after midnight. Lows 45 to 50.
.WEDNESDAY...Mostly cloudy. Chance of rain showers through the
day. Chance of thunderstorms in the afternoon. Some thunderstorms
may be severe with damaging winds. Highs 85 to 95...70 to 80 in
the mountains. Southwest winds 20 to 25 mph with gusts to 45 mph
in the afternoon.
.WEDNESDAY NIGHT...Mostly cloudy. Colder. Thunderstorms likely
and chance of rain showers. Some thunderstorms may be severe with
damaging winds. Lows 40 to 50...30 to 40 in the mountains. West
winds 25 to 35 mph increasing to 30 to 45 mph after midnight.
Gusts up to 65 mph.
.THURSDAY...Mostly clear. Cooler. Highs 60 to 70. West winds
30 to 45 mph with gusts to 65 mph.
.FRIDAY...Mostly clear. Lows 40 to 45. Highs 55 to 65.
.SATURDAY...Mostly cloudy. Lows 35 to 40. Highs 50 to 60.
.SUNDAY...Mostly cloudy. Chance of rain and snow showers. Lows
30 to 35. Highs 45 to 55.

$$

MTZ315-319>330-131200-
Southwest Montana-
National Weather Service Great Falls MT
1108 PM MDT Tue May 12 2026

...HIGH WIND WATCH NOW IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY EVENING FOR Upper Blackfoot and MacDonald Pass...
...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH THURSDAY AFTERNOON FOR Helena Valley...
...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING FOR Canyon Ferry Area...Missouri
Headwaters...Madison River Valley...Gallatin Valley...Northwest
Beaverhead County...Beaverhead and Western Madison below
6000ft...Ruby Mountains and Southern Beaverhead
Mountains...Gallatin and Madison County Mountains and Centennial
Mountains...

.REST OF TONIGHT...Partly cloudy. Lows 45 to 50.
.WEDNESDAY...Increasing clouds. Chance of thunderstorms in the
afternoon. Some thunderstorms may produce damaging winds in the
afternoon. Highs 80 to 90...65 to 75 in the mountains. Southwest
winds 20 to 30 mph with gusts to 60 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly cloudy in the evening then clearing.
Colder. Chance of showers and thunderstorms. Some thunderstorms
may produce damaging winds. Lows 30 to 40. West winds 25 to
35 mph decreasing to 20 to 25 mph after midnight. Gusts up to
55 mph.
.THURSDAY...Mostly clear. Highs 55 to 65. West winds 20 to 30 mph
with gusts to 55 mph.
.FRIDAY...Mostly clear. Lows 35 to 40. Highs 55 to 65.
.SATURDAY...Mostly cloudy. Slight chance of rain and snow
showers. Lows 30 to 35. Highs 45 to 55.
.SUNDAY...Mostly cloudy. Chance of snow showers, rain showers and
slight chance of thunderstorms. Lows 25 to 30. Highs 40 to 50.

$$