FPUS65 KTFX 132138
AFPTFX

Central and Southwest Montana Area Forecast
National Weather Service Great Falls MT
337 PM MDT Wed May 13 2026

MTZ301>314-316>318-141200-
Central Montana-
National Weather Service Great Falls MT
337 PM MDT Wed May 13 2026

...SEVERE THUNDERSTORM WATCH 199 IN EFFECT UNTIL 9 PM MDT THIS
EVENING FOR East Glacier Park Region...Northern High
Plains...Eastern Glacier, Western Toole, and Central
Pondera...Eastern Toole and Liberty...Hill County...Northern
Blaine County...Southern Rocky Mountain Front...Southern High
Plains...Eastern Pondera and Eastern Teton...Western and Central
Chouteau County...Bears Paw Mountains and Southern
Blaine...Cascade County below 5000ft...Judith Basin County and
Judith Gap...Fergus County below 4500ft...Gates of the
Mountains...Little Belt and Highwood Mountains...Snowy and Judith
Mountains...

.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of showers and thunderstorms in the evening.
Slight chance of rain showers after midnight. Some thunderstorms
may be severe with gusty winds. Lows 40 to 45...30 to 40 in the
mountains. West winds 25 to 40 mph with gusts to 60 mph.
.THURSDAY...Sunny. Highs 55 to 65...45 to 55 in the mountains.
West winds 35 to 50 mph with gusts to 65 mph.
.THURSDAY NIGHT...Increasing clouds. Lows 40 to 45...30 to 40 in
the mountains. West winds 25 to 35 mph with gusts to 50 mph
decreasing to 20 to 25 mph with gusts to 40 mph after midnight.
.FRIDAY...Mostly clear. Highs 55 to 65. West winds 20 to 30 mph
with gusts to 45 mph.
.SATURDAY...Mostly cloudy. Chance of rain. Lows 35 to 40. Highs
55 to 65.
.SUNDAY...Mostly cloudy. Cooler. Chance of rain and snow. Lows
30 to 35. Highs 40 to 50.
.MONDAY...Mostly cloudy. Chance of rain and snow. Lows 25 to 35.
Highs 45 to 55.

$$

MTZ315-319>330-141200-
Southwest Montana-
National Weather Service Great Falls MT
337 PM MDT Wed May 13 2026

...SEVERE THUNDERSTORM WATCH 199 IN EFFECT UNTIL 9 PM MDT THIS
EVENING FOR Upper Blackfoot and MacDonald Pass...Helena
Valley...Meagher County Valleys...Elkhorn and Boulder
Mountains...
...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING FOR Big Belt, Bridger and Castle Mountains...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...

.TONIGHT...Partly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Some thunderstorms may be
severe with gusty winds. Lows 30 to 40. West winds 25 to 35 mph
shifting to the southwest 20 to 25 mph after midnight. Gusts up
to 55 mph.
.THURSDAY...Sunny. Highs 60 to 70...50 to 60 in the mountains.
West winds 20 to 30 mph with gusts to 55 mph.
.THURSDAY NIGHT...Mostly cloudy in the evening then clearing.
Lows 30 to 40. West winds 20 to 25 mph with gusts to 45 mph in
the evening.
.FRIDAY...Mostly clear. Highs 55 to 65. West winds 20 to 25 mph
with gusts to 40 mph.
.SATURDAY...Mostly cloudy. Chance of snow. Lows 30 to 35. Highs
50 to 60.
.SUNDAY...Colder. Snow showers likely and slight chance of
thunderstorms. Lows 25 to 30. Highs 30 to 40.
.MONDAY...Mostly cloudy. Slight chance of snow. Lows 25 to 30.
Highs 40 to 50.

$$