Montana Department of Transportation

Malcolm “Mack” Long, Director

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Accidents and Incidents Report

Western Montana Zone Forecast

FPUS55 KMSO 200934

ZFPMSO



Zone Forecast Product

National Weather Service Missoula MT

333 AM MDT Mon Sep 20 2021



MTZ001-202200-

Kootenai/Cabinet Region-

Including the cities of Libby and Eureka

333 AM MDT Mon Sep 20 2021



.TODAY...Partly cloudy with a 20 percent chance of rain showers.

Patchy fog in the morning. Highs in the upper 50s to mid 60s. 

.TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the

mid 30s to lower 40s. 

.TUESDAY...Mostly sunny. Patchy fog and frost in the morning.

Highs in the mid 60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.WEDNESDAY...Mostly sunny in the morning then becoming mostly

cloudy. Highs in the upper 60s to mid 70s. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid

40s. 

.THURSDAY...Partly cloudy. Patchy fog in the morning. Highs in

the upper 60s to mid 70s. 

.THURSDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s.

.FRIDAY...Mostly sunny. Patchy fog in the morning. Highs in the

upper 60s to mid 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the 40s. 

.SATURDAY...Mostly sunny. Highs in the 70s to lower 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s.

.SUNDAY...Partly cloudy. Highs in the 70s. 



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MTZ002-202200-

West Glacier Region-

Including the city of Swan Lake

333 AM MDT Mon Sep 20 2021



.TODAY...Slight chance of thunderstorms until late afternoon.

Rain showers likely in the morning, then chance of rain showers

in the afternoon. Chance of precipitation 70 percent. Highs in

the mid 40s to lower 50s. Southwest winds to 15 mph. 

.TONIGHT...Partly cloudy. Patchy frost after midnight. Lows in

the 30s. Southwest winds to 15 mph. 

.TUESDAY...Mostly sunny. Areas of frost and patchy fog in the

morning. Highs in the mid 50s to lower 60s. Southwest winds to

15 mph. 

.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.WEDNESDAY...Partly cloudy. Highs in the 60s to lower 70s.

Southwest winds 15 to 20 mph with gusts to around 30 mph. 

.WEDNESDAY NIGHT...Mostly cloudy in the evening then clearing.

Lows in the upper 30s to mid 40s. 

.THURSDAY...Partly cloudy. Highs in the upper 50s to mid 60s. 

.THURSDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s.

.FRIDAY...Mostly sunny. Highs in the 60s. 

.FRIDAY NIGHT...Mostly clear. Lows in the 40s. 

.SATURDAY...Mostly sunny. Highs in the mid 60s to lower 70s. 

.SATURDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s.

.SUNDAY...Partly cloudy. Highs in the 60s to lower 70s. 



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MTZ003-202200-

Flathead/Mission Valleys-

Including the cities of Kalispell, Polson, and St. Ignatius

333 AM MDT Mon Sep 20 2021



.TODAY...Slight chance of thunderstorms until late afternoon.

Rain showers likely in the morning, then slight chance of rain

showers in the afternoon. Chance of precipitation 60 percent.

Highs in the mid 50s to lower 60s. 

.TONIGHT...Mostly clear. Patchy frost after midnight. Lows in the

30s. 

.TUESDAY...Mostly sunny. Patchy frost in the morning. Highs in

the mid 60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.WEDNESDAY...Partly cloudy. Highs in the 70s. 

.WEDNESDAY NIGHT...Mostly cloudy in the evening then clearing.

Lows in the upper 30s to mid 40s. 

.THURSDAY...Partly cloudy. Highs in the mid 60s to lower 70s. 

.THURSDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s.

.FRIDAY...Mostly sunny. Highs in the upper 60s to mid 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.SATURDAY...Mostly sunny. Highs in the mid 70s to lower 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s. 

.SUNDAY...Partly cloudy. Highs in the 70s. 



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MTZ004-202200-

Lower Clark Fork Region-

Including the cities of Noxon, Thompson Falls, and Superior

333 AM MDT Mon Sep 20 2021



.TODAY...Mostly cloudy with a chance of rain showers. Slight

chance of thunderstorms until late afternoon. Chance of

precipitation 50 percent. Highs in the 50s. 

.TONIGHT...Mostly clear. Patchy fog and frost after midnight.

Lows in the 30s. 

.TUESDAY...Mostly sunny. Areas of frost and patchy fog in the

morning. Highs in the mid 60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.WEDNESDAY...Partly cloudy. Highs in the 70s. Southwest winds to

15 mph. 

.WEDNESDAY NIGHT...Mostly cloudy in the evening then clearing.

Lows in the upper 30s to mid 40s. 

.THURSDAY...Partly cloudy. Highs in the mid 60s to lower 70s. 

.THURSDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s.

.FRIDAY...Mostly sunny. Highs in the upper 60s to mid 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the 40s. 

.SATURDAY...Mostly sunny. Highs in the 70s to lower 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s to lower 50s. 

.SUNDAY...Partly cloudy. Highs in the 70s. 



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MTZ005-202200-

Missoula/Bitterroot Valleys-

Including the cities of Hamilton and Darby

333 AM MDT Mon Sep 20 2021



.TODAY...Slight chance of thunderstorms until late afternoon.

Rain showers likely in the morning, then slight chance of rain

showers in the afternoon. Chance of precipitation 60 percent.

Highs in the mid 50s to lower 60s. 

.TONIGHT...Mostly clear. Areas of frost after midnight. Lows in

the lower to mid 30s. 

.TUESDAY...Mostly sunny. Widespread frost in the morning. Highs

in the lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows near 40. 

.WEDNESDAY...Mostly sunny. Highs in the mid to upper 70s. 

.WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming

partly cloudy. Lows in the lower to mid 40s. 

.THURSDAY...Partly cloudy. Highs in the lower 70s. 

.THURSDAY NIGHT...Mostly clear. Lows near 40. 

.FRIDAY...Mostly sunny. Highs in the 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the lower to mid 40s. 

.SATURDAY...Mostly sunny. Highs near 80. 

.SATURDAY NIGHT...Mostly clear. Lows in the mid to upper 40s. 

.SUNDAY...Partly cloudy. Highs in the mid to upper 70s. 



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MTZ006-202200-

Bitterroot/Sapphire Mountains-

Including the city of Sula

333 AM MDT Mon Sep 20 2021



.TODAY...Mostly cloudy with a chance of rain showers. Chance of

snow showers and a slight chance of thunderstorms in the morning,

then slight chance of thunderstorms early in the afternoon.

Chance of precipitation 50 percent. Highs in the upper 40s to mid

50s. 

.TONIGHT...Mostly clear. Widespread frost through the night. Lows

in the mid 20s to lower 30s. 

.TUESDAY...Sunny. Widespread frost in the morning. Highs in the

60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.WEDNESDAY...Mostly sunny. Highs in the upper 60s to mid 70s.

Southwest winds to 15 mph. 

.WEDNESDAY NIGHT...Mostly cloudy in the evening then becoming

partly cloudy. Lows in the mid 30s to lower 40s. 

.THURSDAY...Mostly sunny. Highs in the 60s. 

.THURSDAY NIGHT...Mostly clear. Areas of frost after midnight.

Lows in the 30s to lower 40s. 

.FRIDAY...Mostly sunny. Widespread frost in the morning. Highs in

the upper 60s to mid 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.SATURDAY...Mostly sunny. Highs in the 70s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s. 

.SUNDAY...Partly cloudy. Highs in the upper 60s to mid 70s. 



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MTZ007-202200-

Butte/Blackfoot Region-

Including the cities of Anaconda, Deer Lodge, and Drummond

333 AM MDT Mon Sep 20 2021



.TODAY...Chance of rain showers. Chance of showers 60 percent.

Little or no new snow accumulation. Highs in the upper 40s to mid

50s. West winds to 15 mph in the afternoon. 

.TONIGHT...Mostly clear. Areas of frost in the evening, then

widespread frost after midnight. Lows in the mid 20s to lower

30s. Southwest winds to 15 mph. 

.TUESDAY...Sunny. Widespread frost in the morning. Highs in the

60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.WEDNESDAY...Mostly sunny. Highs in the upper 60s to mid 70s.

Southwest winds to 15 mph. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower

40s. 

.THURSDAY...Mostly sunny. Highs in the 60s. 

.THURSDAY NIGHT...Mostly clear. Areas of frost after midnight.

Lows in the 30s to lower 40s. 

.FRIDAY...Mostly sunny. Areas of frost in the morning. Highs in

the upper 60s to mid 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.SATURDAY...Mostly sunny. Highs in the 70s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s. 

.SUNDAY...Mostly sunny. Highs in the upper 60s to mid 70s. 



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MTZ043-202200-

Potomac/Seeley Lake Region-

Including the cities of East Missoula, Seeley Lake, and Clinton

333 AM MDT Mon Sep 20 2021



.TODAY...Rain showers likely in the morning. Slight chance of

thunderstorms in the late morning and early afternoon. Chance of

rain showers in the afternoon. Chance of precipitation

70 percent. Highs in the upper 40s to mid 50s. 

.TONIGHT...Mostly clear. Areas of frost and patchy fog after

midnight. Lows in the upper 20s to mid 30s. 

.TUESDAY...Mostly sunny. Widespread frost and patchy fog in the

morning. Highs in the 60s. 

.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.WEDNESDAY...Mostly sunny. Highs in the upper 60s to mid 70s.

Southwest winds to 15 mph. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s to mid

40s. 

.THURSDAY...Partly cloudy. Highs in the 60s. 

.THURSDAY NIGHT...Mostly clear. Areas of frost after midnight.

Lows in the mid 30s to lower 40s. 

.FRIDAY...Mostly sunny. Highs in the mid 60s to lower 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.SATURDAY...Mostly sunny. Highs in the 70s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s. 

.SUNDAY...Partly cloudy. Highs in the upper 60s to mid 70s. 



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IDZ005-202200-

Northern Clearwater Mountains-

Including the cities of Pierce and Elk River

233 AM PDT Mon Sep 20 2021



.TODAY...Mostly cloudy until late afternoon then clearing. A

50 percent chance of rain showers in the morning. Highs in the

mid 50s to lower 60s. 

.TONIGHT...Mostly clear. Widespread frost after midnight. Lows in

the mid 20s to lower 30s. 

.TUESDAY...Sunny. Widespread frost in the morning. Highs in the

upper 60s to mid 70s. 

.TUESDAY NIGHT...Mostly clear. Areas of frost after midnight.

Lows in the 30s. 

.WEDNESDAY...Mostly sunny. Areas of frost in the morning. Highs

in the 70s. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the 30s to lower 40s. 

.THURSDAY...Mostly sunny. Patchy fog and frost in the morning.

Highs in the mid 60s to lower 70s. 

.THURSDAY NIGHT...Mostly clear. Patchy frost after midnight. Lows

in the 30s. 

.FRIDAY...Mostly sunny. Patchy frost in the morning. Highs in the

70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.SATURDAY...Mostly sunny. Highs in the mid 70s to lower 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s.

.SUNDAY...Mostly sunny. Highs in the 70s. 



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IDZ006-202200-

Southern Clearwater Mountains-

Including the cities of Powell, Elk City, and Dixie

233 AM PDT Mon Sep 20 2021



.TODAY...Mostly cloudy. Chance of rain and snow showers early in

the morning, then chance of rain showers late in the morning.

Patchy fog in the morning. Chance of precipitation 50 percent.

Highs 48 to 63. 

.TONIGHT...Mostly clear. Patchy frost in the evening. Widespread

frost after midnight. Lows 25 to 40. 

.TUESDAY...Sunny. Widespread frost in the morning. Highs 62 to

77. 

.TUESDAY NIGHT...Mostly clear. Widespread frost after midnight.

Lows 33 to 48. 

.WEDNESDAY...Mostly sunny. Widespread frost in the morning. Highs

65 to 80. 

.WEDNESDAY NIGHT...Partly cloudy. Widespread frost after

midnight. Lows 32 to 47. 

.THURSDAY...Mostly sunny. Widespread frost in the morning. Highs

59 to 74. 

.THURSDAY NIGHT...Mostly clear. Widespread frost after midnight.

Lows 31 to 46. 

.FRIDAY...Mostly sunny. Widespread frost in the morning. Highs

65 to 80. 

.FRIDAY NIGHT...Mostly clear. Areas of frost after midnight. Lows

35 to 50. 

.SATURDAY...Mostly sunny. Areas of frost in the morning. Highs

68 to 83. 

.SATURDAY NIGHT...Mostly clear. Lows 37 to 52. 

.SUNDAY...Partly cloudy. Patchy frost in the morning. Highs 64 to

79. 



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IDZ007-202200-

Orofino/Grangeville Region-

Including the city of Kooskia

233 AM PDT Mon Sep 20 2021



.TODAY...Partly cloudy. A 20 percent chance of rain showers in

the morning. Highs in the 50s to upper 60s. 

.TONIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.TUESDAY...Mostly sunny. Highs in the 70s to lower 80s. 

.TUESDAY NIGHT...Mostly clear. Lows in the 40s to lower 50s. 

.WEDNESDAY...Partly cloudy. Highs in the mid 70s to lower 80s. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the 40s to lower 50s. 

.THURSDAY...Mostly sunny. Highs in the 60s to upper 70s. 

.THURSDAY NIGHT...Mostly clear. Lows in the 40s. 

.FRIDAY...Mostly sunny. Highs in the 70s to lower 80s. 

.FRIDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. 

.SATURDAY...Mostly sunny. Highs in the upper 70s to mid 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.

.SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. 



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IDZ008-202200-

Lower Hells Canyon/Salmon River Region-

Including the cities of Riggins and White Bird

233 AM PDT Mon Sep 20 2021



.TODAY...Mostly cloudy in the morning then clearing. Highs 57 to

70. 

.TONIGHT...Mostly clear. Lows in the 40s. 

.TUESDAY...Sunny. Highs in the 70s to lower 80s. South winds to

15 mph. 

.TUESDAY NIGHT...Mostly clear. Lows in the 50s. South winds to

15 mph. 

.WEDNESDAY...Mostly sunny. Highs 72 to 85. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid

50s. 

.THURSDAY...Mostly sunny. Highs in the upper 60s to lower 80s. 

.THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.

.FRIDAY...Mostly sunny. Highs 74 to 87. 

.FRIDAY NIGHT...Mostly clear. Lows in the 50s. 

.SATURDAY...Mostly sunny. Highs 77 to 90. 

.SATURDAY NIGHT...Mostly clear. Lows in the 50s. 

.SUNDAY...Mostly sunny. Highs in the 70s to mid 80s. 



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IDZ009-010-202200-

Western Lemhi County-Eastern Lemhi County-

Including the cities of Shoup, Salmon, and Leadore

333 AM MDT Mon Sep 20 2021



.TODAY...Partly cloudy. Chance of rain and snow showers in the

morning, then slight chance of rain showers in the afternoon.

Widespread frost early in the morning. Chance of precipitation

50 percent. Highs in the 50s. Northwest winds to 15 mph in the

afternoon. 

.TONIGHT...Mostly clear. Widespread frost after midnight. Lows in

the upper 20s to mid 30s. 

.TUESDAY...Sunny. Widespread frost in the morning. Highs in the

mid 60s to lower 70s. 

.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s. 

.WEDNESDAY...Mostly sunny. Highs in the 70s. Southwest winds to

15 mph. 

.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower

40s. 

.THURSDAY...Mostly sunny. Highs in the mid 60s to lower 70s. 

.THURSDAY NIGHT...Mostly clear. Lows in the mid 30s to lower 40s.

.FRIDAY...Mostly sunny. Highs in the 70s. 

.FRIDAY NIGHT...Mostly clear. Lows in the upper 30s to mid 40s. 

.SATURDAY...Sunny. Highs in the 70s to lower 80s. 

.SATURDAY NIGHT...Mostly clear. Lows in the 40s. 

.SUNDAY...Mostly sunny. Highs in the 70s. 



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