Boysen Reservoir

Boysen Reservoir

Shoshoni, Fremont County, WY
30mi²
1435.00ft
Directions
Lake Information

Boysen Reservoir is a man-made lake located in Fremont County, Wyoming. With a surface area of 19,501 acres, it is the largest reservoir in the state. The lake is a popular destination for outdoor enthusiasts, particularly those interested in fishing. Boysen Reservoir is known for its excellent fishing opportunities, particularly for Walleye and Rainbow Trout. Walleye are a popular game fish that are prized for their delicious taste and challenging nature. Boysen Reservoir is considered one of the best Walleye fishing destinations in Wyoming. The lake's Walleye population is maintained through stocking efforts and regulations that ensure the species' sustainability. Anglers can expect to catch Walleye ranging in size from 15 to 25 inches, with some individuals exceeding 30 inches. In addition to Walleye, Boysen Reservoir is also home to a healthy Rainbow Trout population. Rainbow Trout are a popular game fish known for their acrobatic jumps and challenging nature. The lake's Rainbow Trout population is maintained through stocking efforts, and anglers can expect to catch individuals ranging in size from 10 to 20 inches. Apart from its excellent fishing opportunities, Boysen Reservoir is also renowned for its natural beauty. The lake is surrounded by the Wind River Mountains, providing a stunning backdrop for outdoor enthusiasts. The lake is an excellent destination for boating, camping, hiking, and other recreational activities. The reservoir's size also provides ample space for water sports, including water skiing and wakeboarding. Boysen Reservoir is also significant from an ecological perspective. The lake provides a habitat for a variety of aquatic species, including fish, waterfowl, and other wildlife. The lake's water quality is monitored to ensure that it remains healthy and free of pollutants, making it a valuable resource for the local community.

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Current Conditions

66°F°
Feels like 70°F°
Clear
Today's High
74°F°
Today's Low
39°F°

Water Temperature

50°F
Updated: (May 1)
Sign in to contribute temps.

Current water temperature for Boysen Reservoir is 50°F.

Current Snapshot

Wind2 mph E (Gust 5 mph)
Pressure
29.85 inHg
Visibility36 mi
Humidity20%
Cloud Cover8%

Forecast: Saturday, May 3

Day 1 of 9

Hourly Insights

7 AM
40°F°
10 AM
53°F°
1 PM
66°F°
4 PM
73°F°

Temperature

High
74°F°
Low
39°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

3mph
Avg Speed
Gusts up to
9mph
CalmModerateStrong
Max Speed5 mph

Sun, Moon & UV

Sunrise12:02 PM
Sunset2:17 AM
Moon PhasewaxingCrescent
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)

12:37 AM - 3:07 AM

9:40 AM - 12:10 PM

Minor Times (Good)

4:45 PM - 6:15 PM

7:44 AM - 9:14 AM

Outlook for Saturday at Boysen Reservoir

Expect temperatures ranging from 39°F to 74°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 3 mph, with potential gusts reaching up to 9 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 12:37 AM and 9:40 AM, or try the minor windows near 4:45 PM and 7:44 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Boysen Reservoir.

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May 2nd 2025

Lake Information

Elevation
1435 ft
Area
30 mi²
Coordinates
43.331, -108.153

Weather Forecast

Saturday

74°F
39°F

Sunday

77°F
44°F

Monday

58°F
38°F

Tuesday

49°F
37°F

Wednesday

64°F
37°F

Thursday

72°F
42°F

Friday

75°F
46°F

Saturday

75°F
50°F

Sunday

78°F
51°F
Saturday - 5/3/2025
74°F
39°F
12am
48°F
50°F
29.89 hPa
2 mph
SSW
G: 3 mph
2am
45°F
50°F
29.90 hPa
3 mph
ENE
G: 4 mph
4am
42°F
50°F
29.88 hPa
5 mph
SE
G: 7 mph
6am
39°F
50°F
29.91 hPa
3 mph
E
G: 5 mph
8am
44°F
50°F
29.94 hPa
2 mph
SE
G: 6 mph
10am
53°F
50°F
29.90 hPa
2 mph
SSE
G: 7 mph
12pm
62°F
50°F
29.84 hPa
2 mph
S
G: 7 mph
2pm
70°F
50°F
29.78 hPa
3 mph
SSW
G: 7 mph
4pm
73°F
50°F
29.73 hPa
2 mph
SE
G: 9 mph
6pm
73°F
50°F
29.69 hPa
3 mph
ESE
G: 6 mph
8pm
66°F
50°F
29.68 hPa
3 mph
ENE
G: 5 mph
10pm
58°F
50°F
29.70 hPa
5 mph
ENE
G: 8 mph

Water Temperature History

Trends for Boysen Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

34°F

On Dec 22

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 (73°F).
  • Coolest avg: December (35°F).
  • Rapid warming often occurs: April → May (+21°F).
  • Sharpest cooling trend: September → October (-14°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm036912

Wind Direction

211°

Pressure

1012 mb

Cloud Cover

1%

Visibility

26 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
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Frequently Asked Questions About Boysen Reservoir

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