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Asteroid Lake Weather Warning NWS WEATHER ALERT FOR THE ASTEROID LAKE, MT AREA - FLOOD WATCH Issued: 1206 PM MDT Thu Sep 17 2026 Asteroid Lake Weather Warning

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Asteroid Lake, MT 7-Day Weather Forecast

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Asteroid Lake, MT 7-Day Weather Forecast

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Asteroid Lake MT weather - Mostly Clear - 70°F
Mostly Clear
70°F
Updated 4:25 pm
Feels Like 56°F
Humidity 45%
Wind SSW 9 mph
Barometer  30.11 in
Dew Point 48°F
Asteroid Lake MT weather - Mostly Clear - 21°C
Mostly Clear
21°C
Updated 4:25 pm
Feels Like 14°C
Humidity 45%
Wind SSW 14 km/h
Barometer  101.9 kPa
Dew Point 9°C
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Asteroid Lake Weather Forecast

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Asteroid Lake, MT Weather Forecast Date: 350 PM MDT Thu Sep 17 2026

Weather forecast for Asteroid Lake, MT


Tonight
Asteroid Lake MT Weather for Tonight - Chance Of T-Storm
Lo: 41°F
Lo: 5°C		 Tonight... Mostly cloudy. Slight chance of rain showers and isolated thunderstorms early in the evening. Slight chance of rain showers after 3 am. Patchy fog overnight. Lows in the lower 40s. Southwest winds 5 to 10 mph. Chance of precipitation 20%.
Fri
Asteroid Lake MT Weather for Friday - Chance Of T-Storm
Hi: 65°FHi: 18°C
Lo: 39°F
Lo: 4°C		 Friday... Patchy fog early in the morning. Chance of rain showers in the morning. Isolated thunderstorms late in the morning, then rain showers and scattered thunderstorms in the afternoon. Highs in the mid 60s. Southwest winds 5 to 10 mph. Chance of precipitation 80%.
Sat
Asteroid Lake MT Weather for Saturday - Thunderstorms
Hi: 55°FHi: 13°C
Lo: 35°F
Lo: 2°C		 Saturday... Patchy fog in the morning. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. Cooler. Some thunderstorms May produce heavy rainfall in the morning. Some thunderstorms May produce heavy rainfall in the afternoon. Highs in the mid 50s. West winds 5 to 10 mph. Chance of precipitation 90%.
Sun
Asteroid Lake MT Weather for Sunday - Chance Of T-Storm
Hi: 61°FHi: 16°C
Lo: 31°F
Lo: -1°C		 Sunday... Patchy fog early in the morning. Rain showers likely through the day. Isolated thunderstorms late in the morning, then chance of thunderstorms in the afternoon. Some thunderstorms May produce heavy rainfall late in the morning. Highs in the lower 60s. Chance of precipitation 60%.
Mon
Asteroid Lake MT Weather for Monday - Chance Of T-Storm
Hi: 65°FHi: 18°C
Lo: 35°F
Lo: 2°C		 Monday... Mostly sunny. A 20% chance of showers and thunderstorms in the afternoon. Highs in the mid 60s.
Tue
Asteroid Lake MT Weather for Tuesday - Rain Showers
Hi: 69°FHi: 21°C
Lo: 31°F
Lo: -1°C		 Tuesday... Mostly sunny. A 20% chance of rain showers in the afternoon. Highs in the upper 60s.
Wed
Asteroid Lake MT Weather for Wednesday - Sunny
Hi: 69°FHi: 21°C
Lo: 35°F
Lo: 2°C		 Wednesday... Sunny. Highs in the upper 60s.

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