Grinnell Lake

Grinnell Lake

Glacier National Park, Glacier County, MT
0mi²
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Lake Information

Grinnell Lake is a beautiful and iconic natural landmark located in Glacier County, Montana. It spans over 79 acres and is surrounded by lush forest and towering mountain peaks. The lake is known for its crystal-clear waters, which are fed by the nearby glaciers and snowfields of the Continental Divide. These pristine waters are home to a variety of fish, including the brook trout. The lake is situated within the boundaries of the Glacier National Park, which is a protected area in the United States. It is part of the larger Crown of the Continent Ecosystem, which spans over 18 million acres of pristine wilderness in the United States and Canada. The area is rich in biodiversity and is home to a wide range of flora and fauna. Grinnell Lake is a popular destination for tourists and nature enthusiasts who come to admire the breathtaking views and experience the natural beauty of the region. Visitors can hike along the trails that lead to the lake, which offer stunning vistas of the surrounding landscape. The lake also offers opportunities for fishing and boating, which are popular activities among locals and tourists alike. Despite its popularity, Grinnell Lake remains a pristine and untouched natural wonder. The surrounding ecosystem is carefully managed and protected by park officials to ensure the preservation of its delicate balance. This commitment to conservation has made Grinnell Lake a beacon of hope for the future of our planet and a symbol of our responsibility to protect and preserve the natural world for future generations. In conclusion, Grinnell Lake is a stunning example of the natural beauty and biodiversity that can be found in Glacier County, Montana. Its crystal-clear waters and surrounding wilderness provide a haven for fish, wildlife, and nature enthusiasts alike. Its importance as a natural landmark and protected area is a testament to the value we place on our planet's ecosystems and the need to conserve them for future generations.

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Current Conditions

53°F°
Feels like 48°F°
Cloudy
Today's High
43°F°
Today's Low
34°F°

Water Temperature

39°F
Updated: (May 11)
Sign in to contribute temps.

Current water temperature for Grinnell Lake is 39°F.

Current Snapshot

Wind6 mph W (Gust 12 mph)
Pressure
29.60 inHg
Visibility18 mi
Humidity43%
Cloud Cover90%

Forecast: Monday, May 12

Day 1 of 9

Hourly Insights

7 AM
35°F°
8%
10 AM
37°F°
7%
1 PM
38°F°
11%
4 PM
42°F°
6%

Temperature

High
43°F°
Low
34°F°

Precipitation

Chance42%
Amount0.2"
Typerain

Wind

10mph
Avg Speed
Gusts up to
30mph
CalmModerateStrong
Max Speed15 mph

Sun, Moon & UV

Sunrise11:56 AM
Sunset3:06 AM
Moon PhasewaxingGibbous
Max UV Index5 (Moderate)

Solunar Fishing Forecast

Action Rating
4/5

Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

6:38 AM - 9:08 AM

3:45 PM - 6:15 PM

Minor Times (Good)

3:20 AM - 4:50 AM

10:58 AM - 12:28 PM

Outlook for Monday at Grinnell Lake

Expect temperatures ranging from 34°F to 43°F. There's a 42% chance of rain, potentially bringing around 0.2" snow. Winds will be averaging 10 mph, with potential gusts reaching up to 30 mph. The maximum UV index will be 5 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 4/5 (Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 6:38 AM and 3:45 PM, or try the minor windows near 3:20 AM and 10:58 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Grinnell Lake.

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May 12th 2025

Lake Information

Elevation
N/A
Area
0 mi²
Coordinates
48.765, -113.701

Weather Forecast

Monday

43°F
34°F

Tuesday

41°F
30°F

Wednesday

43°F
32°F

Thursday

40°F
31°F

Friday

39°F
32°F

Saturday

47°F
32°F

Sunday

44°F
35°F

Monday

44°F
34°F

Tuesday

45°F
35°F
Monday - 5/12/2025
43°F
34°F
12am
41°F
39°F
29.57 hPa
5 mph
ENE
G: 11 mph
2am
39°F
39°F
29.58 hPa
2 mph
SSW
G: 6 mph
4am
36°F
39°F
29.59 hPa
7 mph
WSW
G: 17 mph
6am
35°F
39°F
29.57 hPa
9 mph
SW
G: 21 mph
8am
35°F
39°F
29.59 hPa
11 mph
SW
G: 21 mph
10am
37°F
39°F
29.59 hPa
12 mph
SW
G: 23 mph
12pm
38°F
39°F
29.58 hPa
12 mph
WSW
G: 27 mph
2pm
40°F
39°F
29.57 hPa
14 mph
SW
G: 30 mph
4pm
42°F
39°F
29.56 hPa
14 mph
WSW
G: 27 mph
6pm
43°F
39°F
29.56 hPa
14 mph
WSW
G: 26 mph
8pm
40°F
39°F
29.56 hPa
10 mph
WSW
G: 24 mph
10pm
36°F
39°F
29.60 hPa
7 mph
WSW
G: 18 mph

Water Temperature History

Trends for Grinnell Lake

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

36°F

On Oct 20

Coldest point in the Last 12 Months.

Average in Period

44°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: August (58°F).
  • Coolest avg: March (40°F).
  • Rapid warming often occurs: June → July (+11°F).
  • Sharpest cooling trend: August → September (-8°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm08162432

Wind Direction

72°

Pressure

1001 mb

Cloud Cover

80%

Visibility

13 miles

Daily Pressure Forecast

MonTueWedThuFriSatSunMonTue0.008.8617.7226.5835.44
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Frequently Asked Questions About Grinnell Lake

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