Grayrocks Reservoir

Grayrocks Reservoir

Wheatland, Platte County, WY
5mi²
1340.00ft
Directions
Lake Information

Grayrocks Reservoir is a 3,501-acre man-made lake situated near Wheatland, Wyoming. The reservoir is a popular destination for outdoor enthusiasts due to the variety of recreational activities available, including fishing, boating, hunting, camping, and hiking. The reservoir's abundant fish population is a major draw for anglers, with black crappie, channel catfish, freshwater drum, largemouth bass, smallmouth bass, tiger muskie, walleye, and yellow perch all found within its waters. These fish provide an opportunity for both sport and sustenance for locals and visitors alike. In addition to fishing, Grayrocks Reservoir offers ample opportunities for boating, with multiple boat ramps and docks available for public use. The reservoir's calm waters make it a popular spot for kayaking and paddleboarding, while larger boats can take advantage of the lake's expansive size to explore its numerous coves and inlets. Hunting is another popular activity at Grayrocks Reservoir, with opportunities for both big game and waterfowl hunting available in the surrounding area. The reservoir's location near the Laramie Mountain Range provides ample opportunities for hiking and camping, with numerous trails and campsites available for visitors. Overall, Grayrocks Reservoir is a significant landmark in Wyoming, providing a variety of recreational opportunities for visitors and locals alike. Its diverse fish population, calm waters, and stunning natural surroundings make it a must-visit destination for anyone seeking an outdoor adventure.

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Current Conditions

65°F°
Feels like 67°F°
Clear
Today's High
77°F°
Today's Low
34°F°

Water Temperature

52°F
Updated: (May 1)
Sign in to contribute temps.

Current water temperature for Grayrocks Reservoir is 52°F.

Current Snapshot

Wind6 mph NNE (Gust 14 mph)
Pressure
29.93 inHg
Visibility44 mi
Humidity17%
Cloud Cover1%

Forecast: Saturday, May 3

Day 1 of 9

Hourly Insights

7 AM
38°F°
10 AM
60°F°
1 PM
74°F°
4 PM
77°F°

Temperature

High
77°F°
Low
34°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

5mph
Avg Speed
Gusts up to
19mph
CalmModerateStrong
Max Speed10 mph

Sun, Moon & UV

Sunrise11:51 AM
Sunset2:00 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)

12:23 AM - 2:53 AM

9:54 AM - 12:24 PM

Minor Times (Good)

4:35 PM - 6:05 PM

7:25 AM - 8:55 AM

Outlook for Saturday at Grayrocks Reservoir

Expect temperatures ranging from 34°F to 77°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 5 mph, with potential gusts reaching up to 19 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 12:23 AM and 9:54 AM, or try the minor windows near 4:35 PM and 7:25 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Grayrocks Reservoir.

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May 2nd 2025

Lake Information

Elevation
1340 ft
Area
5 mi²
Coordinates
42.150, -104.712

Weather Forecast

Saturday

77°F
34°F

Sunday

77°F
41°F

Monday

69°F
46°F

Tuesday

48°F
38°F

Wednesday

65°F
36°F

Thursday

77°F
40°F

Friday

78°F
46°F

Saturday

79°F
49°F

Sunday

82°F
53°F
Saturday - 5/3/2025
77°F
34°F
12am
45°F
52°F
29.95 hPa
3 mph
SE
G: 6 mph
2am
41°F
52°F
29.92 hPa
4 mph
ESE
G: 6 mph
4am
37°F
52°F
29.93 hPa
1 mph
ESE
G: 2 mph
6am
34°F
52°F
29.94 hPa
3 mph
WNW
G: 4 mph
8am
44°F
52°F
29.93 hPa
2 mph
WNW
G: 6 mph
10am
60°F
52°F
29.89 hPa
1 mph
N
G: 3 mph
12pm
71°F
52°F
29.84 hPa
4 mph
ESE
G: 12 mph
2pm
76°F
52°F
29.78 hPa
6 mph
ESE
G: 13 mph
4pm
77°F
52°F
29.73 hPa
7 mph
ESE
G: 14 mph
6pm
75°F
52°F
29.71 hPa
10 mph
ESE
G: 14 mph
8pm
67°F
52°F
29.74 hPa
10 mph
ESE
G: 15 mph
10pm
59°F
52°F
29.78 hPa
10 mph
ESE
G: 18 mph

Water Temperature History

Trends for Grayrocks Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

34°F

On Apr 5

Coldest point in the Last 12 Months.

Average in Period

50°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 (35°F).
  • Rapid warming often occurs: April → May (+17°F).
  • Sharpest cooling trend: September → October (-15°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm05101520

Wind Direction

134°

Pressure

1014 mb

Cloud Cover

0%

Visibility

29 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
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Frequently Asked Questions About Grayrocks Reservoir

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