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

94.6°F
Sunny
Sunny
108°F
108.5°F
55%
SSW 6.7 mph
7.7 mph
94.6°F
75.9°F
0 in
8%
6 mi
1011 mbar
8.1

Five Day Weather Forecast

Sunny
Sun
H: 96°F
L: 73°F
Patchy rain nearby
Mon
H: 88°F
L: 68°F
Sunny
Tue
H: 81°F
L: 62°F
Sunny
Wed
H: 81°F
L: 58°F
Sunny
Thu
H: 83°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 9.5 μg/m3
PM10: 10.4 μg/m3
Carbon Monoxide: 141 μg/m3
Nitrogen Dioxide: 1.1 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 117 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:04 PM
Sunset: 8:26 PM
Daylight: 14 hrs 44 mins
Moonrise: 7:00 PM
Moon Transit: 11:10 PM
Moonset: 2:27 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:19 AM - 12:49 AM
12:00 AM - 12:00 AM

Minor Periods

6:30 PM - 8:00 PM
1:57 AM - 3:27 AM

Action Rating: 3 out of 5

Heat Advisory issued July 26 at 5:10AM CDT until July 26 at 9:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun July 26, 2026, 5:10 AM
Expires: Sun July 26, 2026, 1:15 PM

* WHAT...Heat index values of 100 to 103 degrees expected. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From noon today to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Areas along the immediate Lake Michigan shoreline may see some relief from the heat with a lake breeze in the afternoon hours.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Heat Advisory issued July 26 at 3:18AM CDT until July 26 at 8:00PM CDT by NWS Chicago IL

Effective: Sun July 26, 2026, 3:18 AM
Expires: Sun July 26, 2026, 1:30 PM

* WHAT...Heat index values as high as 105 expected. * WHERE...Livingston, Boone, La Salle, Lee, Ogle, and Winnebago Counties. * WHEN...From noon today to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Sunday, July 26, 2026

Weather Forecast

Sunny
95.7°F
73.4°F
83.6°F
72%
0 in
7%
0%
9.4 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 5.33 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 151.79 μg/m3
Nitrogen Dioxide: 6.13 μg/m3
Sulphur Dioxide: 0.91 μg/m3
Ozone: 77.83 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:04 PM
Sunset: 8:26 PM
Daylight: 14 hrs 44 mins
Moonrise: 7:00 PM
Moon Transit: 11:10 PM
Moonset: 2:27 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:19 AM - 12:49 AM
12:00 AM - 12:00 AM

Minor Periods

6:30 PM - 8:00 PM
1:57 AM - 3:27 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Patchy rain nearby
88.2°F
68.2°F
77.9°F
83%
0.22 in
77%
0%
18.6 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 4.61 μg/m3
PM10: 5.1 μg/m3
Carbon Monoxide: 139.54 μg/m3
Nitrogen Dioxide: 5.02 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 79.08 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
80.7°F
62.3°F
72.4°F
77%
0 in
9%
0%
11.2 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 3.33 μg/m3
PM10: 3.43 μg/m3
Carbon Monoxide: 134.67 μg/m3
Nitrogen Dioxide: 3.1 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 68 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
81.3°F
58.2°F
69.4°F
64%
0 in
4%
0%
6.3 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 1.62 μg/m3
PM10: 1.72 μg/m3
Carbon Monoxide: 129.65 μg/m3
Nitrogen Dioxide: 4.2 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 57.21 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
82.8°F
62.1°F
72.4°F
71%
0 in
6%
0%
8.3 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 3.18 μg/m3
PM10: 3.45 μg/m3
Carbon Monoxide: 196.75 μg/m3
Nitrogen Dioxide: 14.38 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 37.38 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

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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