J Lake, MT 14 Day Weather
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J Lake, MT Weather Forecast


J Lake, MT Weather Forecast Dated: 702 PM Mon Sep 21 2026
Expect a cool pattern with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Monday, September 21, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
69°F 21°C
Sunny
Pleasant near 68°F 20°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds out of the SSE at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.
Tuesday, September 22, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
74°F 23°C
Partly Cloudy
Comfortable with temperatures reaching 74°F 23°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the SE to the ESE at 5 mph 9 km/h.
Wednesday, September 23, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
76°F 25°C
Sunny
Early-Evening
74°F 23°C
Sunny
Enjoyable around 76°F 25°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds moving from the WNW to the E at 5 mph 7 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
79°F 26°C
Sunny
Mild temperatures up to 78°F 25°C, sunny throughout the day, with steady humidity and steady pressure. Winds picking up from NNE at 1 mph 1 km/h to SE at 9 mph 14 km/h.
Friday, September 25, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
73°F 23°C
Partly Cloudy
Very warm with a high of 85°F 29°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the ESE to the NW at 15 mph 24 km/h. Gusts up to 20 mph 32 km/h.
Saturday, September 26, 2026
Mid-Morning
41°F 5°C
Partly Cloudy
Mid-Afternoon
50°F 10°C
Partly Cloudy
Early-Evening
54°F 12°C
Sunny
Cool and brisk at 50°F 10°C, cloudy in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds decreasing from WNW 22 mph 36 km/h to NW 9 mph 15 km/h.
Sunday, September 27, 2026
Mid-Morning
45°F 7°C
Overcast
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
69°F 21°C
Overcast
Comfortable at 66°F 19°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds easing from SE 14 mph 22 km/h to ESE 6 mph 10 km/h.
Monday, September 28, 2026
Mid-Morning
49°F 10°C
Overcast
Mid-Afternoon
58°F 14°C
Partly Cloudy
Early-Evening
54°F 12°C
Cloudy
Cool with a high near 58°F 14°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the WNW at 22 mph 35 km/h. Gusts up to 23 mph 37 km/h.
Tuesday, September 29, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
55°F 13°C
Overcast
Brisk around 55°F 13°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the WNW to the SW at 9 mph 14 km/h.
Wednesday, September 30, 2026
Mid-Morning
42°F 6°C
Nearby Thunderstorms
Mid-Afternoon
46°F 8°C
Nearby Thunderstorms
Early-Evening
49°F 9°C
Cloudy
Cool and brisk at 46°F 8°C, periods of heavy thunderstorms, with lower humidity and barometric pressure rising. Winds shifting from the NW to the NNW at 12 mph 19 km/h.
Thursday, October 1, 2026
Mid-Morning
40°F 4°C
Sunny
Mid-Afternoon
52°F 11°C
Sunny
Early-Evening
55°F 13°C
Sunny
Chilly near 52°F 11°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SSE to the ESE at 8 mph 12 km/h.
Friday, October 2, 2026
Mid-Morning
42°F 5°C
Overcast
Mid-Afternoon
58°F 15°C
Overcast
Early-Evening
59°F 15°C
Overcast
Cool with a high near 58°F 15°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds SE at 22 mph 36 km/h. Gusts up to 30 mph 48 km/h.
Saturday, October 3, 2026
Mid-Morning
46°F 8°C
Overcast
Mid-Afternoon
60°F 16°C
Sunny
Early-Evening
59°F 15°C
Sunny
Refreshing around 60°F 16°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds picking up from NNE at 2 mph 3 km/h to NNW at 11 mph 17 km/h.
Sunday, October 4, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
63°F 17°C
Sunny
Mildly cool near 61°F 16°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the WNW to the WSW at 6 mph 9 km/h.
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