World > North America > United States > Montana > Thornton Lake  

Thornton Lake, MT Weather Forecast

Feedback E-mail the Weather

Quick Weather Clicks

Thornton Lake, MT Weather Forecast

Current Conditions

Settings
Thornton Lake MT weather - Mostly Cloudy - 74°F
Mostly Cloudy
74°F
Updated 6:34 pm
Feels Like 63°F
Humidity 36%
Wind S 13 mph
Barometer  30.04 in
Dew Point 46°F
Thornton Lake MT weather - Mostly Cloudy - 23°C
Mostly Cloudy
23°C
Updated 6:34 pm
Feels Like 17°C
Humidity 36%
Wind S 21 km/h
Barometer  101.7 kPa
Dew Point 8°C
WX Settings

Thornton Lake Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Thornton Lake, MT Weather - Tonight Chance Of T-Storm Thornton Lake, MT Weather - Saturday Chance Of T-Storm Thornton Lake, MT Weather - Saturday Night Chance Of T-Storm Thornton Lake, MT Weather - Sunday Chance Of T-Storm Thornton Lake, MT Weather - Sunday Night Mostly Clear Thornton Lake, MT Weather - Monday Sunny Thornton Lake, MT Weather - Monday Night Mostly Clear Thornton Lake, MT Weather - Tuesday Chance Of T-Storm Thornton Lake, MT Weather - Tuesday Night Chance Of T-Storm Thornton Lake, MT Weather - Wednesday Chance Of T-Storm Thornton Lake, MT Weather - Wednesday Night Chance Of Rain Thornton Lake, MT Weather - Thursday Chance Of Rain
Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Mostly Clear Sunny Mostly Clear Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Rain Chance of Rain
Lo: 46°FLo: 8°C Hi: 70°FHi: 21°C
 Lo: 36°FLo: 2°C Hi: 60°FHi: 16°C
 Lo: 35°FLo: 2°C Hi: 70°FHi: 21°C
 Lo: 40°FLo: 4°C Hi: 76°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 70°FHi: 21°C
 Lo: 36°FLo: 2°C Hi: 66°FHi: 19°C
POP: 40% POP: 90% POP: 70% POP: 60% POP: 30% POP: 50% POP: 40% POP: 20% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 PM MDT Fri Aug 28 2026 Thornton Lake, MT Weather - WeatherWorld.com

Trending Headlines

Thornton Lake Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Thornton Lake Quick Facts

National Two Day Weather Forecast


E-mail the Thornton Lake Weather Forecast

Voice your opinion or tell us about page issues...

Thornton Lake Forecast Discussion

Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 1254 PM MDT Fri Aug 28 2026

Discussion

...

KEY MESSAGES:
  • Isolated thunderstorms across southwest Montana and Lemhi County this evening. More widespread showers and thunderstorms Saturday.
  • Temperatures cooling through the weekend, running 10 degrees below normal by Sunday

The Northern Rockies remains sandwiched between a broad low pressure system over British Columbia and high pressure centered over the four corners region. The end result is southwest flow aloft over western Montana and north central Idaho. Another pulse of en...