National Weather Service Forecast for: Glasgow MT
Issued by: National Weather Service Glasgow, MT
Updated: 12:35 am MDT Aug 20, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 57. Light north northwest wind.
Partly Cloudy

 Thursday

Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 88. Light north northwest wind.
Becoming
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 59. Light and variable wind becoming east northeast 5 to 9 mph in the evening.
Mostly Clear

 Friday

Friday: Sunny, with a high near 87. Northeast wind 7 to 9 mph.
Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 58. Northeast wind 8 to 10 mph.
Mostly Clear

 Saturday

Saturday: Mostly sunny, with a high near 89. East southeast wind 10 to 18 mph, with gusts as high as 29 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 63. East southeast wind 15 to 20 mph, with gusts as high as 32 mph.
Mostly Cloudy
then Slight
Chance
T-storms
 Sunday

Sunday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 93. East southeast wind 10 to 13 mph, with gusts as high as 20 mph.
Slight Chance
Showers then
Sunny
 Sunday
Night
Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. West wind 8 to 10 mph becoming northeast in the evening.
Slight Chance
T-storms then
Partly Cloudy
Lo 57 °F Hi 88 °F Lo 59 °F Hi 87 °F Lo 58 °F Hi 89 °F Lo 63 °F Hi 93 °F Lo 61 °F

 

Overnight
 
 Partly cloudy, with a low around 57. Light north northwest wind.
Thursday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 88. Light north northwest wind.
Thursday Night
 
 Mostly clear, with a low around 59. Light and variable wind becoming east northeast 5 to 9 mph in the evening.
Friday
 
 Sunny, with a high near 87. Northeast wind 7 to 9 mph.
Friday Night
 
 Mostly clear, with a low around 58. Northeast wind 8 to 10 mph.
Saturday
 
 Mostly sunny, with a high near 89. East southeast wind 10 to 18 mph, with gusts as high as 29 mph.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 63. East southeast wind 15 to 20 mph, with gusts as high as 32 mph.
Sunday
 
 A 20 percent chance of showers before noon. Mostly sunny, with a high near 93. East southeast wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
 
 A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. West wind 8 to 10 mph becoming northeast in the evening.
Monday
 
 Sunny, with a high near 86. West northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Monday Night
 
 Mostly clear, with a low around 57. West northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Tuesday
 
 Sunny, with a high near 85.
Tuesday Night
 
 Mostly clear, with a low around 57.
Wednesday
 
 Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Glasgow MT.