Weather Alert
Grassy Lake Trail Weather Warning NWS WEATHER ALERT FOR THE GRASSY LAKE TRAIL, MT AREA - FLASH FLOOD WATCH Issued: 1050 AM MDT Thu Aug 13 2026 Grassy Lake Trail Weather Warning

World > North America > United States > Montana > Grassy Lake Trail  

Grassy Lake Trail, MT Weather - Hour by Hour Forecast

Feedback E-mail the Weather

Quick Clicks

Grassy Lake Trail, MT Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 70°F21°C, dew point 50°F10°C, humidity 49%. Wind direction is SW at 12 mph19 km/h with visibility of 10.00 mi16 km. Barometric pressure is 29.8 in1009 mb.
Tonight - Smoke early in the evening. Patchy smoke in the late evening and overnight. Rain showers and chance of thunderstorms early in the .. Full Forecast
Friday - Chance of rain showers and slight chance of thunderstorms in the morning, then rain showers likely and chance of thunderstorms in .. Full Forecast

Grassy Lake Trail Hourly Weather

24 Hour Forecast Scroll
Thu, Aug 13
6:00 pm
Thu, Aug 13
7:00 pm
Thu, Aug 13
8:00 pm
Thu, Aug 13
9:00 pm
Thu, Aug 13
10:00 pm
Thu, Aug 13
11:00 pm
Fri, Aug 14
Midnight
Fri, Aug 14
1:00 am
Fri, Aug 14
2:00 am
Fri, Aug 14
3:00 am
Fri, Aug 14
4:00 am
Fri, Aug 14
5:00 am
Fri, Aug 14
6:00 am
Fri, Aug 14
7:00 am
Fri, Aug 14
8:00 am
Fri, Aug 14
9:00 am
Fri, Aug 14
10:00 am
Fri, Aug 14
11:00 am
Fri, Aug 14
Noon
Fri, Aug 14
1:00 pm
Fri, Aug 14
2:00 pm
Fri, Aug 14
3:00 pm
Fri, Aug 14
4:00 pm
Fri, Aug 14
5:00 pm
Grassy Lake Trail, MT Hourly Weather - Cloudy - 6:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 7:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 8:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 9:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 10:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 11:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 12:00 AM Grassy Lake Trail, MT Hourly Weather - Cloudy - 1:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 2:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 3:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 4:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 5:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 6:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 7:00 AM Grassy Lake Trail, MT Hourly Weather - Partly Cloudy - 8:00 AM Grassy Lake Trail, MT Hourly Weather - Partly Cloudy - 9:00 AM Grassy Lake Trail, MT Hourly Weather - Partly Cloudy - 10:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 11:00 AM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 12:00 PM Grassy Lake Trail, MT Hourly Weather - Mostly Cloudy - 1:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 2:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 3:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 4:00 PM Grassy Lake Trail, MT Hourly Weather - Cloudy - 5:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy
62°F17°C 60°F16°C 59°F15°C 57°F14°C 56°F13°C 55°F13°C 54°F12°C 54°F12°C 53°F12°C 53°F12°C 53°F12°C 52°F11°C 52°F11°C 53°F12°C 55°F13°C 56°F13°C 59°F15°C 61°F16°C 64°F18°C 66°F19°C 67°F19°C 69°F21°C 68°F20°C 68°F20°C
Rain Rain Rain Rain Rain Rain Rain - - - - - - - - - - - - Rain Rain Rain Rain Rain
74% 58% 58% 58% 58% 58% 58% 15% 15% 15% 15% 15% 15% 12% 12% 12% 12% 12% 12% 36% 36% 36% 36% 36%
55°F13°C 55°F13°C 55°F13°C 55°F13°C 54°F12°C 54°F12°C 53°F12°C 52°F11°C 52°F11°C 51°F11°C 51°F11°C 50°F10°C 50°F10°C 51°F11°C 51°F11°C 52°F11°C 52°F11°C 53°F12°C 53°F12°C 52°F11°C 51°F11°C 50°F10°C 50°F10°C 50°F10°C
78% 84% 87% 93% 93% 96% 96% 93% 96% 93% 93% 93% 93% 93% 86% 86% 78% 75% 67% 61% 56% 51% 53% 53%
ENE ENE ENE ENE E E ESE SE SSE S S S S S S S SSE SW SW SSE S SE E NE
9 mph 9 mph 9 mph 9 mph 9 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 8 mph 8 mph 8 mph 9 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (MDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KDLN model statistics.

Trending Headlines

Trending Entertainment Headlines

Grassy Lake Trail Radar Loop

Use the map search tool if you want to place a location marker on the radar map...
Prob Precip % = Probability of Precipitation.

Grassy Lake Trail 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

E-mail the Grassy Lake Trail Weather Forecast

Voice your opinion or tell us about page issues...

Grassy Lake Trail MT Weather - 8:15 pm

What are people saying?

Contact Us