Island Park Reservoir

Island Park Reservoir

Island Park, Fremont County, ID
12mi²
1920.00ft
Directions
Lake Information

Island Park Reservoir is a vast and scenic lake located in Fremont County, Idaho. Anglers who visit the lake can expect to catch a variety of fish species, including Rainbow Trout, Cutthroat Trout, Kokanee Salmon, Yellow Perch, and Bluegill. This lake covers an area of 7,545 acres, providing ample space for fishing enthusiasts to explore and enjoy the breathtaking views. With its crystal clear waters and serene surroundings, Island Park Reservoir is an ideal destination for anyone who loves fishing or wants to escape the hustle and bustle of city life. Whether you're an experienced angler or a beginner, Island Park Reservoir offers an excellent opportunity to catch a variety of fish and enjoy a peaceful atmosphere. So, pack your fishing gear and head to this magnificent lake for a memorable fishing experience. You're sure to have a great time.

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Current Conditions

56°F°
Feels like 48°F°
Cloudy
Today's High
45°F°
Today's Low
32°F°

Water Temperature

50°F
Updated: (May 4)
Sign in to contribute temps.

Current water temperature for Island Park Reservoir is 50°F.

Current Snapshot

Wind10 mph S (Gust 19 mph)
Pressure
29.58 inHg
Visibility26 mi
Humidity44%
Cloud Cover100%

Forecast: Monday, May 5

Day 1 of 9

Hourly Insights

7 AM
38°F°
8%
10 AM
43°F°
15%
1 PM
36°F°
23%
4 PM
37°F°
30%

Temperature

High
45°F°
Low
32°F°

Precipitation

Chance96%
Amount0.8"
Typerain

Wind

11mph
Avg Speed
Gusts up to
41mph
CalmModerateStrong
Max Speed18 mph

Sun, Moon & UV

Sunrise12:10 PM
Sunset2:35 AM
Moon PhasewaxingGibbous
Max UV Index4 (Moderate)

Solunar Fishing Forecast

Action Rating
3/5

Todays action is rated a 3 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

2:24 AM - 4:54 AM

11:05 AM - 1:35 PM

Minor Times (Good)

7:18 PM - 8:48 PM

8:57 AM - 10:27 AM

Outlook for Monday at Island Park Reservoir

Expect temperatures ranging from 32°F to 45°F. There's a 96% chance of rain, potentially bringing around 0.8" snow. Winds will be averaging 11 mph, with potential gusts reaching up to 41 mph. The maximum UV index will be 4 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 3/5 (Todays action is rated a 3 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 2:24 AM and 11:05 AM, or try the minor windows near 7:18 PM and 8:57 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Island Park Reservoir.

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May 4th 2025

Lake Information

Elevation
1920 ft
Area
12 mi²
Coordinates
44.421, -111.402

Weather Forecast

Monday

45°F
32°F

Tuesday

58°F
32°F

Wednesday

63°F
36°F

Thursday

66°F
40°F

Friday

68°F
39°F

Saturday

72°F
42°F

Sunday

68°F
45°F

Monday

62°F
44°F

Tuesday

55°F
38°F
Monday - 5/5/2025
45°F
32°F
12am
45°F
50°F
29.78 hPa
4 mph
N
G: 7 mph
2am
44°F
50°F
29.80 hPa
3 mph
N
G: 15 mph
4am
40°F
50°F
29.81 hPa
4 mph
NE
G: 13 mph
6am
38°F
50°F
29.84 hPa
6 mph
N
G: 17 mph
8am
41°F
50°F
29.87 hPa
8 mph
NNE
G: 19 mph
10am
43°F
50°F
29.87 hPa
11 mph
N
G: 23 mph
12pm
39°F
50°F
29.89 hPa
12 mph
N
G: 27 mph
2pm
35°F
50°F
29.92 hPa
14 mph
N
G: 29 mph
4pm
37°F
50°F
29.93 hPa
15 mph
NNE
G: 36 mph
6pm
33°F
50°F
29.99 hPa
16 mph
NNE
G: 40 mph
8pm
33°F
50°F
30.01 hPa
16 mph
NNE
G: 39 mph
10pm
33°F
50°F
30.03 hPa
17 mph
NNE
G: 39 mph

Water Temperature History

Trends for Island Park Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

34°F

On Jan 22

Coldest point in the Last 12 Months.

Average in Period

48°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: July (70°F).
  • Coolest avg: January (34°F).
  • Rapid warming often occurs: June → July (+10°F).
  • Sharpest cooling trend: September → October (-17°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

Wind Direction

Pressure

1009 mb

Cloud Cover

97%

Visibility

9 miles

Daily Pressure Forecast

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Frequently Asked Questions About Island Park Reservoir

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