Water Temperature of Lake Mendota in Madison, WI

Current Water Temperature

66.0°F

Measurement Time: Monday, June 1, 2026, 7:15 AM CDT

Temperature Locations

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Local Points of Interest

Maple Bluff, WI; Shorewood Hills, WI; Middleton, WI; Waunakee, WI

Lake Mendota

Station Name: Madison 2NW
Data Source: USGS

Elevation Above Sea Level: 847 feet

Nearest Address:
Howard Temin Lakeshore Path
Madison, WI 53706
Dane County

GPS Coordinates: 43.0994, -89.4044

Nearby Water Temperatures

Lake Monona, Madison, WI (2.5 mi)
Pheasant Branch, Middleton, WI (5.4 mi)
Swan Creek, Fitchburg, WI (7.2 mi)
Yahara River, Windsor, WI (8 mi)
Badger Mill Creek, Verona, WI (10.9 mi)
Brewery Creek, Cross Plains, WI (11.8 mi)
Black Earth Creek, Cross Plains, WI (11.9 mi)
Sugar River, Verona, WI (12.6 mi)
Black Earth Creek, Cross Plains, WI (13.1 mi)
Black Earth Creek, Black Earth, WI (16.7 mi)
Eagle Spring Lake, Mukwonago, WI (51.8 mi)
Wisconsin River, Muscoda, WI (52.8 mi)
Fox River, Berlin, WI (63.2 mi)
Fond Du Lac River, Fond Du Lac, WI (67.7 mi)
Rock River, Byron, IL (67.9 mi)

Weather for Madison, Wisconsin

Current Weather

87.8°F
Cloudy
Cloudy
89.6°F
96.6°F
66%
SW 13.4 mph
22.8 mph
92.1°F
66.6°F
0 in
75%
10 mi
973 mbar
0.3

Five Day Weather Forecast

Sunny
Mon
H: 100°F
L: 75°F
Sunny
Tue
H: 82°F
L: 64°F
Sunny
Wed
H: 87°F
L: 60°F
Sunny
Thu
H: 89°F
L: 66°F
Light rain
Fri
H: 75°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 3.7 μg/m3
Carbon Monoxide: 132 μg/m3
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 42 mins
Moonrise: 7:41 PM
Moon Transit: 12:00 AM
Moonset: 3:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:10 AM - 1:40 PM

Minor Periods

7:11 PM - 8:41 PM
2:53 AM - 4:23 AM

Action Rating: 3 out of 5

Severe Thunderstorm Watch issued July 27 at 2:23PM CDT until July 27 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon July 27, 2026, 2:23 PM
Expires: Mon July 27, 2026, 7:00 PM

SEVERE THUNDERSTORM WATCH 520 REMAINS VALID UNTIL 7 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 9 COUNTIES IN SOUTHEAST WISCONSIN DODGE JEFFERSON KENOSHA MILWAUKEE OZAUKEE RACINE WALWORTH WASHINGTON WAUKESHA THIS INCLUDES THE CITIES OF BEAVER DAM, BROOKFIELD, CEDARBURG, DELAVAN, EAST TROY, ELKHORN, FORT ATKINSON, GERMANTOWN, GRAFTON, HARTFORD, JEFFERSON, KENOSHA, LAKE GENEVA, MAYVILLE, MENOMONEE FALLS, MEQUON, MILWAUKEE, MUSKEGO, NEW BERLIN, RACINE, WATERTOWN, WAUKESHA, WAUPUN, WEST BEND, AND WHITEWATER.


Severe Thunderstorm Watch issued July 27 at 12:50PM CDT until July 27 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon July 27, 2026, 12:50 PM
Expires: Mon July 27, 2026, 7:00 PM

THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 520 TO INCLUDE THE FOLLOWING AREAS UNTIL 7 PM CDT THIS EVENING IN WISCONSIN THIS WATCH INCLUDES 7 COUNTIES IN SOUTHEAST WISCONSIN DODGE JEFFERSON KENOSHA MILWAUKEE RACINE WALWORTH WAUKESHA THIS INCLUDES THE CITIES OF BEAVER DAM, BROOKFIELD, DELAVAN, EAST TROY, ELKHORN, FORT ATKINSON, JEFFERSON, KENOSHA, LAKE GENEVA, MAYVILLE, MENOMONEE FALLS, MILWAUKEE, MUSKEGO, NEW BERLIN, RACINE, WATERTOWN, WAUKESHA, WAUPUN, AND WHITEWATER.


Extreme Heat Warning issued July 27 at 9:06AM CDT until July 27 at 9:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon July 27, 2026, 9:06 AM
Expires: Mon July 27, 2026, 5:15 PM

* WHAT...Dangerously hot conditions with heat index values up to 105. * WHERE...Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Extreme Heat Warning issued July 27 at 1:54PM CDT until July 27 at 9:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon July 27, 2026, 1:54 PM
Expires: Mon July 27, 2026, 9:00 PM

* WHAT...Dangerously hot conditions with heat index values as high as 117 degrees. * WHERE...Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Monday, July 27, 2026

Weather Forecast

Sunny
100.4°F
75.4°F
86.8°F
72%
0 in
7%
0%
21.5 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 4.37 μg/m3
PM10: 4.86 μg/m3
Carbon Monoxide: 141.71 μg/m3
Nitrogen Dioxide: 6.14 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 78.71 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 42 mins
Moonrise: 7:41 PM
Moon Transit: 12:00 AM
Moonset: 3:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:10 AM - 1:40 PM

Minor Periods

7:11 PM - 8:41 PM
2:53 AM - 4:23 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
81.9°F
64°F
73.8°F
68%
0 in
8%
0%
11.6 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 5.88 μg/m3
PM10: 6.15 μg/m3
Carbon Monoxide: 149.75 μg/m3
Nitrogen Dioxide: 3.94 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 68.75 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:04 PM
Sunset: 8:24 PM
Daylight: 14 hrs 40 mins
Moonrise: 8:14 PM
Moon Transit: 12:00 AM
Moonset: 4:26 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 2:30 PM

Minor Periods

7:44 PM - 9:14 PM
3:56 AM - 5:26 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
87°F
59.8°F
73.2°F
70%
0 in
6%
0%
11.9 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 5.67 μg/m3
PM10: 5.91 μg/m3
Carbon Monoxide: 161.17 μg/m3
Nitrogen Dioxide: 7.66 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 65.63 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:04 PM
Sunset: 8:23 PM
Daylight: 14 hrs 38 mins
Moonrise: 8:42 PM
Moon Transit: 12:49 AM
Moonset: 5:32 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:48 AM - 3:18 PM

Minor Periods

8:12 PM - 9:42 PM
5:02 AM - 6:32 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
88.5°F
66.1°F
76°F
71%
0 in
6%
0%
13.4 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 6.21 μg/m3
PM10: 6.49 μg/m3
Carbon Monoxide: 171.51 μg/m3
Nitrogen Dioxide: 7.02 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 82.88 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:04 PM
Sunset: 8:21 PM
Daylight: 14 hrs 35 mins
Moonrise: 9:05 PM
Moon Transit: 1:36 AM
Moonset: 6:39 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
1:33 PM - 4:03 PM

Minor Periods

8:35 PM - 10:05 PM
6:09 AM - 7:39 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Light rain
74.5°F
65.4°F
67.6°F
93%
1.07 in
91%
0%
10.7 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 4.53 μg/m3
Carbon Monoxide: 238.5 μg/m3
Nitrogen Dioxide: 9.01 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:04 PM
Sunset: 8:20 PM
Daylight: 14 hrs 33 mins
Moonrise: 9:25 PM
Moon Transit: 2:20 AM
Moonset: 7:46 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:50 AM - 4:20 AM
2:17 PM - 4:47 PM

Minor Periods

8:55 PM - 10:25 PM
7:16 AM - 8:46 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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