McCanaughy Lake

McCanaughy Lake

Lewellen, Keith County, NE
47mi²
ft
Directions
Lake Information

Nearly everything about Lake McConaughy is big. At 30,000 surface acres it is Nebraska’s largest reservoir, its dam is among the largest of its type in the world and its fish grow to trophy proportions, accounting for several state records. Even its nickname, “Big Mac,” reflects its size. Lake Mac’s white sand beaches and clear waters are a favorite with campers, boaters, wind surfers, swimmers, water skiers, picnickers, scuba divers, hunters, anglers and others seeking outdoor fun. Fishing has long been a favorite activity at Lake McConaughy, with its cool, clear, deep waters. Game fish species include walleye, channel catfish, Northern pike, wiper, smallmouth and white bass, among others.

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Current Conditions

72°F°
Feels like 71°F°
Clear
Today's High
74°F°
Today's Low
45°F°

Water Temperature

46°F
Updated: (May 3)
Sign in to contribute temps.

Current water temperature for McCanaughy Lake is 46°F.

Current Snapshot

Wind11 mph SE (Gust 15 mph)
Pressure
29.83 inHg
Visibility43 mi
Humidity22%
Cloud Cover0%

Forecast: Sunday, May 4

Day 1 of 9

Hourly Insights

7 AM
49°F°
10 AM
63°F°
1 PM
72°F°
4 PM
74°F°

Temperature

High
74°F°
Low
45°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

14mph
Avg Speed
Gusts up to
28mph
CalmModerateStrong
Max Speed21 mph

Sun, Moon & UV

Sunrise11:40 AM
Sunset1:47 AM
Moon PhasefirstQuarter
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)

12:59 AM - 3:29 AM

10:59 AM - 1:29 PM

Minor Times (Good)

5:36 PM - 7:06 PM

7:44 AM - 9:14 AM

Outlook for Sunday at McCanaughy Lake

Expect temperatures ranging from 45°F to 74°F. Skies look partly cloudy with little chance of precipitation. Winds will be averaging 14 mph, with potential gusts reaching up to 28 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 12:59 AM and 10:59 AM, or try the minor windows near 5:36 PM and 7:44 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for McCanaughy Lake.

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May 4th 2025

Lake Information

Elevation
N/A
Area
47 mi²
Coordinates
41.208, -101.673

Weather Forecast

Sunday

74°F
45°F

Monday

73°F
48°F

Tuesday

69°F
51°F

Wednesday

67°F
51°F

Thursday

70°F
47°F

Friday

76°F
47°F

Saturday

79°F
52°F

Sunday

80°F
49°F

Monday

85°F
58°F
Sunday - 5/4/2025
74°F
45°F
12am
51°F
46°F
29.90 hPa
8 mph
ESE
G: 17 mph
2am
49°F
46°F
29.90 hPa
7 mph
SE
G: 14 mph
4am
46°F
46°F
29.90 hPa
7 mph
SE
G: 13 mph
6am
45°F
46°F
29.91 hPa
5 mph
SE
G: 10 mph
8am
53°F
46°F
29.91 hPa
10 mph
SSE
G: 21 mph
10am
63°F
46°F
29.87 hPa
17 mph
SSE
G: 25 mph
12pm
69°F
46°F
29.85 hPa
19 mph
SSE
G: 25 mph
2pm
73°F
46°F
29.80 hPa
20 mph
SSE
G: 26 mph
4pm
74°F
46°F
29.76 hPa
21 mph
SE
G: 27 mph
6pm
72°F
46°F
29.76 hPa
21 mph
SE
G: 28 mph
8pm
64°F
46°F
29.80 hPa
17 mph
SE
G: 28 mph
10pm
59°F
46°F
29.85 hPa
15 mph
SE
G: 26 mph

Water Temperature History

Trends for McCanaughy Lake

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

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 (77°F).
  • Coolest avg: February (34°F).
  • Rapid warming often occurs: May → June (+14°F).
  • Sharpest cooling trend: September → October (-12°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm07142128

Wind Direction

117°

Pressure

1013 mb

Cloud Cover

0%

Visibility

21 miles

Daily Pressure Forecast

SunMonTueWedThuFriSatSunMon0.008.8617.7226.5835.44
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Frequently Asked Questions About McCanaughy Lake

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