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Second Rock Lake, MT Weather Forecast

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Second Rock Lake, MT Weather Forecast

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Second Rock Lake MT weather - Clear - 55°F
Clear
55°F
Updated 11:16 am
Feels Like 52°F
Humidity 50%
Wind VRB 7 mph
Barometer  29.98 in
Dew Point 37°F
Second Rock Lake MT weather - Clear - 13°C
Clear
13°C
Updated 11:16 am
Feels Like 11°C
Humidity 50%
Wind VRB 11 km/h
Barometer  101.5 kPa
Dew Point 3°C
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Second Rock Lake Weather Forecast

REST OF TODAY TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT
Second Rock Lake, MT Weather - Rest Of Today Rain Showers Second Rock Lake, MT Weather - Tonight Snow Showers Second Rock Lake, MT Weather - Monday Mostly Sunny Second Rock Lake, MT Weather - Monday Night Partly Cloudy Second Rock Lake, MT Weather - Tuesday Sunny Second Rock Lake, MT Weather - Tuesday Night Partly Cloudy Second Rock Lake, MT Weather - Wednesday Mostly Sunny Second Rock Lake, MT Weather - Wednesday Night Partly Cloudy Second Rock Lake, MT Weather - Thursday Chance Of T-Storm Second Rock Lake, MT Weather - Thursday Night Chance Of T-Storm Second Rock Lake, MT Weather - Friday Rain Showers Second Rock Lake, MT Weather - Friday Night Mostly Clear
Rain Showers Snow Showers Mostly Sunny Partly Cloudy Sunny Partly Cloudy Mostly Sunny Partly Cloudy Chance of T-Storm Chance of T-Storm Rain Showers Mostly Clear
Hi: 71°FHi: 22°C
 Lo: 29°FLo: -2°C Hi: 55°FHi: 13°C
 Lo: 25°FLo: -4°C Hi: 65°FHi: 18°C
 Lo: 29°FLo: -2°C Hi: 65°FHi: 18°C
 Lo: 29°FLo: -2°C Hi: 65°FHi: 18°C
 Lo: 30°FLo: -1°C Hi: 65°FHi: 18°C
 Lo: 30°FLo: -1°C
POP: 20% POP: 30% POP: 40% POP: 40% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 847 AM MDT Sun Sep 13 2026 Second Rock Lake, MT Weather - WeatherWorld.com

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Issued: 543 AM MDT Sun Sep 13 2026

Key Messages

  • Below average temperatures through the middle of next week.
  • Chance of showers (mainly light) through Monday. Isolated thunderstorms possible in southeast Montana this evening and overnight, possibly strong.
  • Brisk west winds Monday; gusts over 50 mph possible from Big Timber to Harlowton.

Discussion

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Next 7 days (Through Saturday)...

Short wave ridging today ahead of an approaching upper low over the Pacific NW will lead to warmer and mainly dry conditions across our CWA today. Highs w...