FPUS65 KTFX 211030 SFPMT State Forecast For Montana National Weather Service Great Falls MT 430 AM MDT Sun Jun 21 2026 MTZ001>007-043-212200- West of the Continental Divide- National Weather Service Missoula MT 430 AM MDT Sun Jun 21 2026 .../NOTICE/ The Area Forecast Product (AFP) and State Forecast Product (SFP) for Montana will be discontinued June 29, 2026... .TODAY...Mostly sunny with a slight chance of rain. Highs in the mid 70s to lower 80s. .TONIGHT...Mostly clear. Lows in the 40s. .MONDAY...Mostly clear. Highs in the 70s to lower 80s. .TUESDAY...Mostly clear. Lows in the 40s. Highs in the upper 70s to mid 80s. .WEDNESDAY...Partly cloudy. Lows in the mid 40s to lower 50s. Highs in the 80s. .THURSDAY...Partly cloudy. Lows in the mid 40s to lower 50s. Highs in the 80s to lower 90s. $$ MTZ301>314-316>318-212200- Central Montana- National Weather Service Great Falls MT 430 AM MDT Sun Jun 21 2026 .TODAY...Sunny. Slight chance of rain showers in the afternoon. Highs 65 to 75...60 to 70 in the mountains. .TONIGHT...Increasing clouds. Chance of rain showers and slight chance of thunderstorms through the night. Lows 45 to 50...40 to 45 in the mountains. .MONDAY...Mostly cloudy then clearing. Chance of rain showers. Slight chance of thunderstorms in the afternoon and evening. Highs 60 to 70...50 to 60 in the mountains. .TUESDAY...Mostly clear. Lows 40 to 45. Highs 65 to 75. .WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 70 to 80. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows around 50. Highs 75 to 85. $$ MTZ315-319>330-212200- Southwest Montana- National Weather Service Great Falls MT 430 AM MDT Sun Jun 21 2026 .TODAY...Sunny. Highs 70 to 80...60 to 70 in the mountains. .TONIGHT...Partly cloudy. Slight chance of rain showers. Lows 40 to 50. .MONDAY...Mostly clear. Slight chance of showers and thunderstorms in the afternoon and evening. Highs 65 to 75... 60 to 70 in the mountains. .TUESDAY...Mostly clear. Lows 40 to 45. Highs 65 to 75. .WEDNESDAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80. .THURSDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 45 to 50. Highs 75 to 85. $$ MTZ016>027-059>062-212200- Northeast Montana- National Weather Service Glasgow MT 430 AM MDT Sun Jun 21 2026 .TODAY...Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower to mid 70s. .TONIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Lows near 50. .MONDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the mid 60s to lower 70s. .TUESDAY...Partly cloudy. Highs near 70. Lows in the upper 40s. .WEDNESDAY...Partly cloudy. Highs in the lower to mid 70s. Lows in the mid to upper 40s. .THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the mid 70s to lower 80s. Lows near 50. $$ MTZ028>042-056>058-063>068-212200- South Central and Southeast Montana- National Weather Service Billings MT 430 AM MDT Sun Jun 21 2026 .TODAY...Partly sunny. Chance of showers west...and patchy fog east...and chance of showers and slight chance of thunderstorms east. Highs in the upper 60s to the upper 70s. .TONIGHT...Mostly cloudy. Chance of showers and slight chance of thunderstorms west...and patchy fog east...and slight chance of showers east. Lows in the mid 40s to the mid 50s. .MONDAY...Mostly cloudy. Chance of thunderstorms. Highs in the mid 60s to the mid 70s. .MONDAY NIGHT...Partly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows in the lower 40s to the lower 50s. .TUESDAY...Sunny. Highs around 70 to the mid 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 40s to the mid 50s. Highs in the lower 70s to around 80. .THURSDAY...Mostly sunny. Slight chance of thunderstorms. Highs in the upper 70s to the upper 80s. $$