Clarke Lake

Clarke Lake

Wrightsville, Lancaster County, PA
10.98mi²
219ft
Directions
Lake Information

Clarke Lake is a man-made lake located in Lancaster County, Pennsylvania. The lake was created by the Safe Harbor Dam, a public works project built during the Great Depression in the 1930s. The dam was one of the electrification projects of the New Deal and was designed to harness the power of the Susquehanna River for electricity generation. The lake spans an area of 7,029 acres and is a popular destination for anglers seeking a unique and exciting fishing experience. The lake is home to several fish species, including Flathead Catfish, Channel Catfish, and Smallmouth Bass. These fish species are known to offer an exciting and challenging fishing experience for both novice and experienced anglers. Apart from fishing, Clarke Lake and the surrounding area offer visitors a range of outdoor recreational activities, including hiking, camping, and wildlife watching. The lake's picturesque surroundings and serene atmosphere make it a popular destination among nature enthusiasts and outdoor adventurers. Overall, Clarke Lake in Lancaster County, Pennsylvania, is a must-visit destination for anglers seeking a unique and exciting fishing experience. Its diverse fish population and range of recreational activities make it a popular destination for nature lovers and outdoor enthusiasts seeking a memorable experience. The lake's history as a New Deal public works project also adds an interesting historical dimension to the area's significance.

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Current Conditions

83°F
Feels like 84°F
MostlyClear
Today's High
87°F
Today's Low
73°F

Water Temperature

70°F
Updated: (Jul 5)
Sign in to contribute temps.

Latest Water Temperature Data: Current water temperature for Clarke Lake is 70° Fahrenheit - providing real-time thermal conditions for fishing, swimming, and water recreation planning.

Current Snapshot

Wind6 mph SE (Gust 10 mph)
Pressure
29.98 inHg
Visibility17 mi
Humidity69%
Cloud Cover37%

Forecast: Saturday, Jul 12

Day 1 of 9

Hourly Insights

7 AM
74°
10 AM
80°
1 PM
86°
4 PM
86°
7 PM
84°
52%

Temperature

High
87°F
Low
73°F

Precipitation

Chance52%
Amount0.08"
Typerain

Wind

6 mph
Avg Speed
Gusts up to
18 mph
CalmModerateStrong
Max Speed7 mph

Sun, Moon & UV

Sunrise9:47 AM
Sunset12:35 AM
Moon PhasewaningGibbous
Max UV Index8 (Very High)

Weather Forecast & Fishing Conditions at Clarke Lake

Today's weather at Clarke Lake features partly cloudy skies with temperatures ranging from 73°F to 87°F. Wind conditions will average 6 mph with gusts reaching up to 18 mph, creating excellent fishing conditions with calm waters. The UV index will reach 8 (Very High), and there's a 52% chance of precipitation. The current water temperature is 70°F (updated Jul 5), indicating that excellent conditions for bass and trout fishing. These conditions will significantly impact fish behavior and angling success throughout the day.

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July 3rd 2025

Weather Forecast

Saturday

87°F
73°F

Sunday

83°F
72°F

Monday

87°F
72°F

Tuesday

88°F
71°F

Wednesday

90°F
74°F

Thursday

90°F
75°F

Friday

90°F
75°F

Saturday

84°F
73°F

Sunday

86°F
70°F
Saturday - 7/12/2025
87°F
73°F
12am
76°F
70°F
30.02 hPa
4 mph
SSE
G: 6 mph
2am
76°F
70°F
30.03 hPa
4 mph
SSE
G: 5 mph
4am
73°F
70°F
30.03 hPa
4 mph
ESE
G: 5 mph
6am
73°F
70°F
30.04 hPa
5 mph
SE
G: 9 mph
8am
75°F
70°F
30.06 hPa
6 mph
SE
G: 10 mph
10am
80°F
70°F
30.06 hPa
5 mph
SE
G: 8 mph
12pm
85°F
70°F
30.06 hPa
7 mph
SE
G: 11 mph
2pm
87°F
70°F
30.03 hPa
6 mph
SSE
G: 11 mph
4pm
86°F
70°F
30.01 hPa
6 mph
SSE
G: 12 mph
6pm
85°F
70°F
29.99 hPa
7 mph
SE
G: 12 mph
8pm
81°F
70°F
30.00 hPa
5 mph
SE
G: 13 mph
10pm
77°F
70°F
30.03 hPa
6 mph
SSE
G: 16 mph

Water Temperature History

Trends for Clarke Lake

Current Temp

73°F

Measured on Jun 30

Latest recorded surface temperature.

Lowest in Period

33°F

On Jan 17

Coldest point in the Last 12 Months.

Average in Period

56°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 (78°F).
  • Coolest avg: December (36°F).
  • Rapid warming often occurs: April → May (+14°F).
  • Sharpest cooling trend: November → December (-11°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm05101520

Wind Direction

150°

Pressure

1017 mb

Cloud Cover

6%

Visibility

12 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
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Frequently Asked Questions About Clarke Lake

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