Arrowrock Reservoir

Arrowrock Reservoir

Neal, Boise County, ID
5mi²
957.00ft
Directions
Lake Information

Nestled in the scenic Boise County of Idaho, Arrowrock Reservoir is a true gem of the West. Covering an impressive 3,015 acres, this reservoir is a popular destination for anglers seeking to catch a variety of fish species. Visitors to Arrowrock Reservoir can expect to catch Kokanee, Rainbow Trout, Smallmouth Bass, and Yellow Perch. The lake is known for its abundant wildlife, making it a prime location for fishing enthusiasts to cast their lines and reel in a big catch. However, it's important to note that Arrowrock Reservoir's water levels can fluctuate widely, so it's crucial to check the current levels before heading out to the lake. But for those who are prepared, Arrowrock Reservoir offers a unique fishing experience unlike any other. Beyond fishing, Arrowrock Reservoir offers a range of other activities for visitors to enjoy. Boaters can take advantage of the lake's calm waters, perfect for water skiing, wakeboarding, and tubing. Kayakers and paddleboarders will also find plenty to explore on the lake's tranquil waters. And for those seeking a little more adventure, the surrounding area offers plenty of opportunities for hiking and mountain biking. With stunning views of the surrounding mountains and valleys, a hike around Arrowrock Reservoir is an experience not to be missed. In short, Arrowrock Reservoir is a must-visit destination for anyone seeking outdoor adventure and natural beauty in the heart of Idaho. With its expansive size, diverse wildlife, and range of activities, this 3,015-acre reservoir is sure to leave a lasting impression on all who visit.

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Current Conditions

71°F°
Feels like 74°F°
Clear
Today's High
71°F°
Today's Low
51°F°

Water Temperature

58°F
Updated: (May 7)
Sign in to contribute temps.

Current water temperature for Arrowrock Reservoir is 58°F.

Current Snapshot

Wind5 mph SSW (Gust 9 mph)
Pressure
29.90 inHg
Visibility36 mi
Humidity25%
Cloud Cover2%

Forecast: Thursday, May 8

Day 1 of 9

Hourly Insights

7 AM
52°F°
10 AM
61°F°
1 PM
68°F°
4 PM
71°F°

Temperature

High
71°F°
Low
51°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

5mph
Avg Speed
Gusts up to
15mph
CalmModerateStrong
Max Speed9 mph

Sun, Moon & UV

Sunrise12:26 PM
Sunset2:54 AM
Moon PhasewaxingGibbous
Max UV Index9 (Very High)

Solunar Fishing Forecast

Action Rating
2/5

Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

6:00 AM - 6:00 AM

12:50 PM - 3:20 PM

Minor Times (Good)

10:49 PM - 12:19 AM

10:08 AM - 11:38 AM

Outlook for Thursday at Arrowrock Reservoir

Expect temperatures ranging from 51°F to 71°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 5 mph, with potential gusts reaching up to 15 mph. The maximum UV index will be 9 (Very High), so plan sun protection accordingly. For anglers, today's fishing action is rated 2/5 (Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 6:00 AM and 12:50 PM, or try the minor windows near 10:49 PM and 10:08 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Arrowrock Reservoir.

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May 8th 2025

Lake Information

Elevation
957 ft
Area
5 mi²
Coordinates
43.610, -115.828

Weather Forecast

Thursday

71°F
51°F

Friday

80°F
51°F

Saturday

83°F
56°F

Sunday

75°F
56°F

Monday

57°F
45°F

Tuesday

55°F
39°F

Wednesday

57°F
40°F

Thursday

61°F
39°F

Friday

58°F
44°F
Thursday - 5/8/2025
71°F
51°F
12am
58°F
58°F
29.91 hPa
3 mph
E
G: 5 mph
2am
56°F
58°F
29.93 hPa
5 mph
E
G: 7 mph
4am
54°F
58°F
29.96 hPa
3 mph
E
G: 5 mph
6am
52°F
58°F
30.00 hPa
1 mph
ENE
G: 3 mph
8am
54°F
58°F
30.05 hPa
2 mph
SSE
G: 2 mph
10am
61°F
58°F
30.09 hPa
7 mph
W
G: 11 mph
12pm
67°F
58°F
30.10 hPa
8 mph
NW
G: 12 mph
2pm
70°F
58°F
30.10 hPa
9 mph
WNW
G: 15 mph
4pm
71°F
58°F
30.07 hPa
9 mph
W
G: 14 mph
6pm
71°F
58°F
30.06 hPa
6 mph
WNW
G: 11 mph
8pm
68°F
58°F
30.06 hPa
3 mph
N
G: 5 mph
10pm
61°F
58°F
30.08 hPa
5 mph
NE
G: 7 mph

Water Temperature History

Trends for Arrowrock Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

34°F

On Feb 16

Coldest point in the Last 12 Months.

Average in Period

52°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 (79°F).
  • Coolest avg: February (34°F).
  • Rapid warming often occurs: March → April (+16°F).
  • Sharpest cooling trend: September → October (-20°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm0481216

Wind Direction

98°

Pressure

1013 mb

Cloud Cover

1%

Visibility

30 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About Arrowrock Reservoir

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