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

88.2°F
Sunny
Sunny
90.9°F
100.4°F
50%
NW 5.6 mph
6.5 mph
93.4°F
69.6°F
0 in
0%
9 mi
1023 mbar
9.4

Five Day Weather Forecast

Sunny
Tue
H: 98°F
L: 73°F
Sunny
Wed
H: 89°F
L: 70°F
Patchy rain nearby
Thu
H: 87°F
L: 71°F
Patchy rain nearby
Fri
H: 86°F
L: 69°F
Sunny
Sat
H: 89°F
L: 70°F

Air Quality

AQI: 1 - Good
PM2.5: 3.6 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 135 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 120 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:03 PM
Sunset: 8:36 PM
Daylight: 15 hrs 5 mins
Moonrise: 5:26 AM
Moon Transit: 1:27 PM
Moonset: 9:14 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:31 AM - 3:01 AM
12:57 AM - 3:27 PM

Minor Periods

8:44 PM - 10:14 PM
4:56 AM - 6:26 AM

Action Rating: 4 out of 5

Heat Advisory issued July 13 at 11:44PM CDT until July 15 at 8:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon July 13, 2026, 11:44 PM
Expires: Tue July 14, 2026, 7:45 AM

* WHAT...Heat index values up to 103 expected. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From noon Tuesday to 8 PM CDT Wednesday. * 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. 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 14 at 5:18AM CDT until July 15 at 8:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Tue July 14, 2026, 5:18 AM
Expires: Tue July 14, 2026, 1:30 PM

* WHAT...Heat index values up to 102 expected. * WHERE...Portions of east central, south central and southeast Wisconsin. * WHEN...From noon today to 8 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Tuesday, July 14, 2026

Weather Forecast

Sunny
98.2°F
72.5°F
84.1°F
61%
0 in
3%
0%
7.2 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 4.63 μg/m3
PM10: 5.12 μg/m3
Carbon Monoxide: 144.46 μg/m3
Nitrogen Dioxide: 6.26 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 81.92 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:03 PM
Sunset: 8:36 PM
Daylight: 15 hrs 5 mins
Moonrise: 5:26 AM
Moon Transit: 1:27 PM
Moonset: 9:14 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:31 AM - 3:01 AM
12:57 AM - 3:27 PM

Minor Periods

8:44 PM - 10:14 PM
4:56 AM - 6:26 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
88.8°F
69.5°F
79.4°F
78%
0 in
9%
0%
6.5 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 4.73 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 149.08 μg/m3
Nitrogen Dioxide: 5.7 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 90.04 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:03 PM
Sunset: 8:35 PM
Daylight: 15 hrs 4 mins
Moonrise: 6:49 AM
Moon Transit: 2:25 PM
Moonset: 9:47 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:32 AM - 4:02 AM
1:55 PM - 4:25 PM

Minor Periods

9:17 PM - 10:47 PM
6:19 AM - 7:49 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Patchy rain nearby
86.7°F
70.6°F
78.3°F
80%
0.27 in
75%
0%
5.4 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 5.3 μg/m3
PM10: 5.93 μg/m3
Carbon Monoxide: 143.71 μg/m3
Nitrogen Dioxide: 7.53 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 87.33 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:03 PM
Sunset: 8:35 PM
Daylight: 15 hrs 2 mins
Moonrise: 8:10 AM
Moon Transit: 3:18 PM
Moonset: 10:13 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
2:48 PM - 5:18 PM

Minor Periods

9:43 PM - 11:13 PM
7:40 AM - 9:10 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Patchy rain nearby
86.4°F
68.9°F
77.1°F
83%
0.33 in
80%
0%
6.3 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 5.39 μg/m3
PM10: 5.83 μg/m3
Carbon Monoxide: 165.23 μg/m3
Nitrogen Dioxide: 9.09 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 97.25 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:03 PM
Sunset: 8:34 PM
Daylight: 15 hrs mins
Moonrise: 9:26 AM
Moon Transit: 4:07 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
3:37 PM - 6:07 PM

Minor Periods

10:05 PM - 11:35 PM
8:56 AM - 10:26 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
89.3°F
70.2°F
78.5°F
81%
0 in
11%
0%
14.1 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 2.93 μg/m3
PM10: 3.04 μg/m3
Carbon Monoxide: 248.63 μg/m3
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 78.75 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:03 PM
Sunset: 8:33 PM
Daylight: 14 hrs 59 mins
Moonrise: 10:38 AM
Moon Transit: 4:52 PM
Moonset: 10:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
4:22 PM - 6:52 PM

Minor Periods

10:25 PM - 11:55 PM
10:08 AM - 11:38 AM

Action Rating: 2 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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