Weather WorldCastle Lake, MT 14 Day Weather
Quick Weather Clicks
Settings
Sun & Moon
Castle Lake, MT Weather Forecast
Castle Lake, MT Weather Forecast Dated: 1152 PM Thu Oct 15 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.
Thursday, October 15, 2026
Mid-Morning
22°F -6°C
Cloudy
Mid-Afternoon
33°F 1°C
Sunny
Early-Evening
31°F -1°C
Sunny
Nippy around 33°F 1°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Friday, October 16, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
49°F 9°C
Sunny
Early-Evening
47°F 9°C
Sunny
Cool and brisk at 49°F 9°C, sunny throughout the day, with increasing humidity and steady pressure. Winds turning from the SSW to the SW at 15 mph 24 km/h.
Saturday, October 17, 2026
Mid-Morning
47°F 8°C
Overcast
Mid-Afternoon
48°F 9°C
Overcast
Early-Evening
48°F 9°C
Overcast
Chilly near 48°F 9°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SSW to the SW at 15 mph 24 km/h. Gusts up to 22 mph 35 km/h.
Sunday, October 18, 2026
Mid-Morning
40°F 4°C
Overcast
Mid-Afternoon
43°F 6°C
Sunny
Early-Evening
42°F 5°C
Sunny
Nippy around 43°F 6°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Monday, October 19, 2026
Mid-Morning
42°F 6°C
Sunny
Mid-Afternoon
47°F 8°C
Sunny
Early-Evening
48°F 9°C
Cloudy
Brisk around 47°F 8°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds SW at 5 mph 9 km/h.
Tuesday, October 20, 2026
Mid-Morning
38°F 4°C
Sunny
Mid-Afternoon
45°F 7°C
Sunny
Early-Evening
43°F 6°C
Scattered Showers
Cool and brisk at 45°F 7°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds out of the WSW at 6 mph 9 km/h.
Wednesday, October 21, 2026
Mid-Morning
38°F 4°C
Sunny
Mid-Afternoon
46°F 8°C
Cloudy
Early-Evening
45°F 7°C
Cloudy
Chilly near 46°F 8°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.
Thursday, October 22, 2026
Mid-Morning
42°F 6°C
Cloudy
Mid-Afternoon
46°F 8°C
Drizzle
Early-Evening
41°F 5°C
Heavy Snow & Thunder
Crisp with a high near 46°F 8°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure falling. Winds shifting from the SSW to the SW at 8 mph 12 km/h.
Friday, October 23, 2026
Mid-Morning
27°F -3°C
Heavy Snow & Thunder
Mid-Afternoon
23°F -5°C
Heavy Snow
Early-Evening
18°F -8°C
Snow
Frigid with highs around 23°F -5°C, on-and-off snow throughout the day, with steady humidity and barometric pressure rising. Snow accumulation up to 2 in. up to 5 cm.
Saturday, October 24, 2026
Mid-Morning
13°F -11°C
Overcast
Mid-Afternoon
21°F -6°C
Overcast
Early-Evening
22°F -6°C
Partly Cloudy
Freezing near 21°F -6°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.
Sunday, October 25, 2026
Mid-Morning
22°F -5°C
Sunny
Mid-Afternoon
26°F -4°C
Sunny
Early-Evening
28°F -3°C
Overcast
Freezing temperatures near 26°F -4°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds turning from the SW to the SSW at 11 mph 18 km/h.
Monday, October 26, 2026
Mid-Morning
17°F -8°C
Snow
Mid-Afternoon
20°F -7°C
Heavy Snow & Thunder
Early-Evening
16°F -9°C
Heavy Snow & Thunder
Frigid with highs around 20°F -7°C, on-and-off snow throughout the day, with increasing humidity and steady pressure. New snow accumulation of 3 to 6 in. 8 to 15 cm. Winds switching from the SW to the NNE at 6 mph 10 km/h.
Tuesday, October 27, 2026
Mid-Morning
22°F -6°C
Overcast
Mid-Afternoon
21°F -6°C
Freezing Rain
Early-Evening
24°F -5°C
Freezing Rain
Freezing near 21°F -6°C, drier morning followed by freezing rain lasting through evening, with steady humidity and steady pressure. Winds building from SW at 7 mph 11 km/h to SW at 15 mph 25 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, October 28, 2026
Mid-Morning
27°F -3°C
Partly Cloudy
Mid-Afternoon
24°F -5°C
Blizzard
Early-Evening
25°F -4°C
Patchy Heavy Snow
Freezing temperatures near 24°F -5°C, patchy blowing snow and gusty conditions, with steady humidity and steady pressure. Winds SW at 20 mph 32 km/h. Gusts up to 31 mph 51 km/h.
Castle Lake, MT Weather Radar Map
Use the map search tool if you want to place a location marker on the radar map...