Weather WorldJohnson Lake, MT 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Johnson Lake, MT Weather Forecast
Johnson Lake, MT Weather Forecast Date: 1141 PM MDT Wed Oct 21 2026
The area/counties/county of: Sheridan, including the cities of: Plentywood and Medicine Lake.or toggle through each period.
Tonight... Clear this evening, then becoming partly cloudy. Lows in the lower 40s. Southeast wind 10 to 15 mph.
Thursday... Sunny. Highs in the lower 70s. South wind around 5 mph.
Thursday Night... Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 40s. East wind around 5 mph.
Friday... Cloudy in the morning, then becoming partly sunny. Highs in the lower 70s. Southeast wind 5 to 10 mph.
Friday Night... Rain likely. Windy with lows in the lower 30s. West wind 20 to 30 mph, becoming northwest 25 to 30 mph after midnight. Gusts up to 45 mph. Chance of rain 60%.
Saturday... Partly cloudy and windy. Highs in the lower 40s. Lows in the mid 20s.
Sunday... Partly cloudy and windy. Highs in the lower 40s. Lows in the mid 20s.
Sunday Night... Mostly cloudy. Lows in the mid 20s. Highs in the mid 40s.
Monday... Mostly cloudy. Lows in the mid 20s. Highs in the mid 40s.
Tuesday... Mostly cloudy. Lows in the mid 20s. Highs in the mid 40s.
Tuesday Night... A slight chance of rain and snow. Lows in the upper 20s. Highs in the mid 40s.
POP = Probability of Precipitation
Johnson Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...