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Home Return to list Frost Advisory 0003 Issued by the Missoula Forecast Office
Action: New Issued At: 2026-05-16 09:31:47 743 WWUS75 KMSO 161431 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 831 AM MDT Sat May 16 2026 MTZ003-005-171445- /O.NEW.KMSO.FR.Y.0003.260518T0200Z-260518T1500Z/ /O.EXT.KMSO.FR.Y.0002.260517T0200Z-260517T1500Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 831 AM MDT Sat May 16 2026 ...FROST ADVISORY IN EFFECT FROM 8 PM SUNDAY TO 9 AM MDT MONDAY... ...FROST ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT SUNDAY... * WHAT...For the first Frost Advisory, temperatures as low as 32 will result in frost formation. For the second Frost Advisory, temperatures as low as 30 will result in frost formation. * WHERE...Flathead/Mission Valleys and Missoula/Bitterroot Valleys. * WHEN...For the first Frost Advisory, from 8 PM this evening to 9 AM MDT Sunday. For the second Frost Advisory, from 8 PM Sunday to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Action: Continued Issued At: 2026-05-17 10:04:17 440 WWUS75 KMSO 171504 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 904 AM MDT Sun May 17 2026 MTZ003-005-181500- /O.EXP.KMSO.FR.Y.0002.000000T0000Z-260517T1500Z/ /O.CON.KMSO.FR.Y.0003.260518T0200Z-260518T1500Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 904 AM MDT Sun May 17 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT MONDAY... * WHAT...Temperatures as low as 29 will result in frost formation. * WHERE...Flathead/Mission Valleys and Missoula/Bitterroot Valleys. * WHEN...From 8 PM this evening to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Action: Time and Area Extended Issued At: 2026-05-17 18:02:33 465 WWUS75 KMSO 172301 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 501 PM MDT Sun May 17 2026 MTZ001-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Kootenai/Cabinet Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Kootenai/Cabinet Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include: 31 to 35 degrees in Eureka, 25 to 28 in Olney, 32 to 36 Libby and Troy areas, 30 to 35 south of Libby to Happys Inn and 26 to 31 Marion and Yaak areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ004-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Lower Clark Fork Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Lower Clark Fork Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include:28 to 32 degrees in Thompson Falls, 30 to 34 degrees in Plains, 33 to 37 degrees in Noxon, 25 to 28 degrees in Haugan, 29 to 32 degrees in St. Regis, and 29 to 34 degrees in Alberton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ003-005-181500- /O.CON.KMSO.FR.Y.0003.260518T0200Z-260518T1500Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT MONDAY... * WHAT...Temperatures as low as 28 degrees will result in frost formation. * WHERE...Flathead/Mission Valleys and Missoula/Bitterroot Valleys. * WHEN...From 8 PM this evening to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Low-lying areas of the Bitterroot Valley could fall between 24 and 28 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Action: Continued Issued At: 2026-05-17 18:02:33 465 WWUS75 KMSO 172301 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 501 PM MDT Sun May 17 2026 MTZ001-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Kootenai/Cabinet Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Kootenai/Cabinet Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include: 31 to 35 degrees in Eureka, 25 to 28 in Olney, 32 to 36 Libby and Troy areas, 30 to 35 south of Libby to Happys Inn and 26 to 31 Marion and Yaak areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ004-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Lower Clark Fork Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Lower Clark Fork Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include:28 to 32 degrees in Thompson Falls, 30 to 34 degrees in Plains, 33 to 37 degrees in Noxon, 25 to 28 degrees in Haugan, 29 to 32 degrees in St. Regis, and 29 to 34 degrees in Alberton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ003-005-181500- /O.CON.KMSO.FR.Y.0003.260518T0200Z-260518T1500Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT MONDAY... * WHAT...Temperatures as low as 28 degrees will result in frost formation. * WHERE...Flathead/Mission Valleys and Missoula/Bitterroot Valleys. * WHEN...From 8 PM this evening to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Low-lying areas of the Bitterroot Valley could fall between 24 and 28 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Action: Time and Area Extended Issued At: 2026-05-17 18:02:33 465 WWUS75 KMSO 172301 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 501 PM MDT Sun May 17 2026 MTZ001-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Kootenai/Cabinet Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Kootenai/Cabinet Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include: 31 to 35 degrees in Eureka, 25 to 28 in Olney, 32 to 36 Libby and Troy areas, 30 to 35 south of Libby to Happys Inn and 26 to 31 Marion and Yaak areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ004-181400- /O.EXB.KMSO.FR.Y.0003.260518T0600Z-260518T1400Z/ Lower Clark Fork Region- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT MONDAY... * WHAT...Temperatures between 25 and 34 degrees will result in frost formation. * WHERE...Lower Clark Fork Region. * WHEN...From midnight tonight to 8 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Temperature ranges include:28 to 32 degrees in Thompson Falls, 30 to 34 degrees in Plains, 33 to 37 degrees in Noxon, 25 to 28 degrees in Haugan, 29 to 32 degrees in St. Regis, and 29 to 34 degrees in Alberton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MTZ003-005-181500- /O.CON.KMSO.FR.Y.0003.260518T0200Z-260518T1500Z/ Flathead/Mission Valleys-Missoula/Bitterroot Valleys- 501 PM MDT Sun May 17 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT MONDAY... * WHAT...Temperatures as low as 28 degrees will result in frost formation. * WHERE...Flathead/Mission Valleys and Missoula/Bitterroot Valleys. * WHEN...From 8 PM this evening to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Low-lying areas of the Bitterroot Valley could fall between 24 and 28 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||