Water Temperature of Lake Mendota in Madison, WI

Current Water Temperature

42.3°F

Measurement Time: Friday, April 10, 2026, 9:15 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

51.1°F
Partly cloudy
Partly cloudy
47°F
48.4°F
48%
NW 11 mph
12.6 mph
43.8°F
36.9°F
0 in
50%
9 mi
1026 mbar
4.2

Five Day Weather Forecast

Moderate rain
Fri
H: 51°F
L: 39°F
Heavy rain
Sat
H: 44°F
L: 33°F
Moderate rain
Sun
H: 75°F
L: 43°F
Patchy rain nearby
Mon
H: 71°F
L: 62°F
Moderate rain
Tue
H: 77°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.45 μg/m3
Carbon Monoxide: 230.85 μg/m3
Nitrogen Dioxide: 7.55 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:58 AM
Sunset: 7:34 PM
Daylight: 13 hrs 10 mins
Moonrise: 3:07 AM
Moon Transit: 7:29 AM
Moonset: 11:58 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

6:59 AM - 9:29 AM
7:30 PM - 10:00 PM

Minor Periods

11:28 AM - 12:58 AM
2:37 AM - 4:07 AM

Action Rating: 3 out of 5

Flood Warning issued April 10 at 4:40AM CDT until April 10 at 4:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Fri April 10, 2026, 4:40 AM
Expires: Fri April 10, 2026, 4:00 PM

...The Flood Warning continues for the following rivers in Wisconsin... Baraboo River Near Baraboo affecting Columbia and Sauk Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Baraboo River near Baraboo. * WHEN...Until late this afternoon. * IMPACTS...At 16.0 feet, The effects of flooding at this level are confined mainly to agricultural land. * ADDITIONAL DETAILS... - At 4:00 AM CDT Friday the stage was 16.2 feet. - Bankfull stage is 14.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Friday was 16.9 feet. - Forecast...The river is expected to fall below flood stage late this morning and continue falling to 9.6 feet Thursday evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.4 feet on 03/29/1943. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 400 PM CDT.


Flood Warning issued April 10 at 10:48AM CDT until April 10 at 5:07PM CDT by NWS Milwaukee/Sullivan WI

Effective: Fri April 10, 2026, 10:48 AM
Expires: Fri April 10, 2026, 5:15 PM

...The Flood Warning is extended for the following river in Wisconsin... Baraboo River Near Baraboo affecting Columbia and Sauk Counties. * WHAT...Minor flooding is occurring. * WHERE...Baraboo River near Baraboo. * WHEN...Until late this afternoon. * IMPACTS...At 16.0 feet, The effects of flooding at this level are confined mainly to agricultural land. * ADDITIONAL DETAILS... - At 10:00 AM CDT Friday the stage was 16.1 feet. - Bankfull stage is 14.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Friday was 16.9 feet. - Forecast...The river is expected to fall below flood stage late this morning and continue falling to 9.7 feet on Friday, April 17. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 15.9 feet on 04/12/2008. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 515 PM CDT.
Friday, April 10, 2026

Weather Forecast

Moderate rain
50.9°F
39.4°F
45.4°F
80%
0.38 in
87%
0%
12.3 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 4.1 μg/m3
PM10: 4.48 μg/m3
Carbon Monoxide: 210.25 μg/m3
Nitrogen Dioxide: 5.34 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 72.88 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:58 AM
Sunset: 7:34 PM
Daylight: 13 hrs 10 mins
Moonrise: 3:07 AM
Moon Transit: 7:29 AM
Moonset: 11:58 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

6:59 AM - 9:29 AM
7:30 PM - 10:00 PM

Minor Periods

11:28 AM - 12:58 AM
2:37 AM - 4:07 AM

Action Rating: 3 out of 5

Saturday, April 11, 2026

Weather Forecast

Heavy rain
44.2°F
33.3°F
40°F
91%
3.33 in
86%
0%
13.4 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 7.62 μg/m3
PM10: 7.99 μg/m3
Carbon Monoxide: 213.05 μg/m3
Nitrogen Dioxide: 10.35 μg/m3
Sulphur Dioxide: 2.38 μg/m3
Ozone: 71.8 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 12:58 AM
Sunset: 7:36 PM
Daylight: 13 hrs 13 mins
Moonrise: 3:39 AM
Moon Transit: 8:18 AM
Moonset: 1:06 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
8:17 PM - 10:47 PM

Minor Periods

12:36 AM - 2:06 PM
3:09 AM - 4:39 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Moderate rain
74.5°F
42.6°F
60.4°F
87%
0.47 in
76%
0%
22.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.36 μg/m3
PM10: 8.61 μg/m3
Carbon Monoxide: 184.49 μg/m3
Nitrogen Dioxide: 6.03 μg/m3
Sulphur Dioxide: 3.33 μg/m3
Ozone: 84.84 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:58 AM
Sunset: 7:37 PM
Daylight: 13 hrs 16 mins
Moonrise: 4:05 AM
Moon Transit: 9:05 AM
Moonset: 2:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
9:03 PM - 11:33 PM

Minor Periods

1:45 PM - 3:15 PM
3:35 AM - 5:05 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Patchy rain nearby
71.4°F
61.9°F
65.7°F
90%
0.01 in
85%
0%
19.5 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 4.62 μg/m3
PM10: 4.8 μg/m3
Carbon Monoxide: 172.87 μg/m3
Nitrogen Dioxide: 3.55 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 75.04 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 12:58 AM
Sunset: 7:38 PM
Daylight: 13 hrs 19 mins
Moonrise: 4:29 AM
Moon Transit: 9:51 AM
Moonset: 3:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:21 AM - 11:51 AM

Minor Periods

2:55 PM - 4:25 PM
3:59 AM - 5:29 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Moderate rain
76.6°F
60.6°F
68.5°F
82%
0.34 in
89%
0%
22.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.47 μg/m3
PM10: 5.89 μg/m3
Carbon Monoxide: 164.1 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 71.85 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:57 AM
Sunset: 7:39 PM
Daylight: 13 hrs 22 mins
Moonrise: 4:50 AM
Moon Transit: 10:37 AM
Moonset: 4:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:07 AM - 12:37 AM

Minor Periods

4:08 PM - 5:38 PM
4:20 AM - 5:50 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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