Water Temperature of Lake Mendota in Madison, WI

Current Water Temperature

51.6°F

Measurement Time: Sunday, May 3, 2026, 10:15 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

46°F
Clear
Clear
41.8°F
49°F
73%
SSW 8.3 mph
17.4 mph
47.7°F
36.3°F
0 in
0%
9 mi
1003 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 79°F
L: 47°F
Sunny
Tue
H: 54°F
L: 40°F
Sunny
Wed
H: 53°F
L: 35°F
Patchy rain nearby
Thu
H: 58°F
L: 37°F
Patchy rain nearby
Fri
H: 59°F
L: 37°F

Air Quality

AQI: 1 - Good
PM2.5: 7.25 μg/m3
PM10: 7.75 μg/m3
Carbon Monoxide: 165.85 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:54 AM
Sunset: 8:03 PM
Daylight: 14 hrs 16 mins
Moonrise: 11:33 PM
Moon Transit: 2:50 AM
Moonset: 7:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:20 AM - 4:50 AM
2:50 PM - 5:20 PM

Minor Periods

12:00 AM - 12:00 AM
6:31 AM - 8:01 AM

Action Rating: 2 out of 5

Flood Warning issued May 3 at 3:44PM CDT until May 6 at 1:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 3:44 PM
Expires: Mon May 4, 2026, 3:45 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is cancelled for the following river in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until early Wednesday morning. * IMPACTS...At 10.5 feet, Floodwaters reach Oxbow Bend Road in the area of the gage on the east side of the lake. * ADDITIONAL DETAILS... - At 3:00 PM CDT Sunday the stage was 10.3 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Sunday was 10.5 feet. - Forecast...The river is expected to fall below flood stage Tuesday evening and continue falling to 9.2 feet Sunday, May 10. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 10.5 feet on 08/30/2007. - 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 445 PM CDT.


Flood Warning issued May 3 at 9:10PM CDT until May 6 at 1:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 9:10 PM
Expires: Mon May 4, 2026, 9:15 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until early Wednesday morning. * IMPACTS...At 10.5 feet, Floodwaters reach Oxbow Bend Road in the area of the gage on the east side of the lake. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 10.3 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 PM CDT Sunday was 10.5 feet. - Forecast...The river is expected to fall below flood stage Tuesday evening and continue falling to 9.1 feet Sunday, May 10. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 10.5 feet on 08/30/2007. - 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 Monday morning at 915 AM CDT.


Flood Warning issued May 3 at 3:44PM CDT until May 6 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 3:44 PM
Expires: Mon May 4, 2026, 3:45 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is cancelled for the following river in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until Wednesday evening. * IMPACTS...At 10.0 feet, Floodwaters affect the property of a home on South Christian Road on the east side of the river in the Afton area. Minor erosional flood damage occurs to lowland and agricultural land adjacent to the river the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 3:00 PM CDT Sunday the stage was 9.6 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Sunday was 9.8 feet. - Forecast...The river is expected to rise to a crest of 9.6 feet this evening. It will then fall below flood stage early Wednesday afternoon. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.6 feet on 03/14/1985. - 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 445 PM CDT.


Flood Warning issued May 3 at 9:10PM CDT until May 6 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 9:10 PM
Expires: Mon May 4, 2026, 9:15 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until Wednesday evening. * IMPACTS...At 10.0 feet, Floodwaters affect the property of a home on South Christian Road on the east side of the river in the Afton area. Minor erosional flood damage occurs to lowland and agricultural land adjacent to the river the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 9.5 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 PM CDT Sunday was 9.8 feet. - Forecast...The river is expected to fall below flood stage early Wednesday afternoon and continue falling to 8.2 feet Sunday, May 10. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.6 feet on 03/14/1985. - 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 Monday morning at 915 AM CDT.


Flood Warning issued May 3 at 3:44PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 3:44 PM
Expires: Mon May 4, 2026, 3:45 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is cancelled for the following river in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. * WHAT...Minor flooding is occurring. * WHERE...ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 3:00 PM CDT Sunday the stage was 10.3 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Sunday was 10.4 feet. - Forecast...No forecast is available for this location. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 10.3 feet on 03/19/2012. - 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 445 PM CDT.
Monday, May 4, 2026

Weather Forecast

Patchy rain nearby
78.6°F
46.8°F
59°F
57%
0.04 in
86%
0%
19.2 mph
6.2


Air Quality

AQI: 1 - Good
PM2.5: 7.17 μg/m3
PM10: 8.46 μg/m3
Carbon Monoxide: 163.01 μg/m3
Nitrogen Dioxide: 6.39 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 78.16 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:54 AM
Sunset: 8:03 PM
Daylight: 14 hrs 16 mins
Moonrise: 11:33 PM
Moon Transit: 2:50 AM
Moonset: 7:01 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:20 AM - 4:50 AM
2:50 PM - 5:20 PM

Minor Periods

12:00 AM - 12:00 AM
6:31 AM - 8:01 AM

Action Rating: 2 out of 5

Tuesday, May 5, 2026

Weather Forecast

Sunny
53.5°F
40.2°F
47°F
60%
0 in
0%
0%
13.6 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 3.02 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 152.65 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 78.08 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:54 AM
Sunset: 8:04 PM
Daylight: 14 hrs 18 mins
Moonrise: 12:33 AM
Moon Transit: 3:41 AM
Moonset: 7:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:11 AM - 5:41 AM
3:42 PM - 6:12 PM

Minor Periods

7:19 AM - 8:49 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, May 6, 2026

Weather Forecast

Sunny
53°F
35.1°F
44.3°F
59%
0 in
0%
0%
14.3 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 2.79 μg/m3
PM10: 2.92 μg/m3
Carbon Monoxide: 148.81 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 64.44 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:54 AM
Sunset: 8:05 PM
Daylight: 14 hrs 21 mins
Moonrise: 12:23 AM
Moon Transit: 4:32 AM
Moonset: 8:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

4:02 AM - 6:32 AM
4:33 PM - 7:03 PM

Minor Periods

8:15 AM - 9:45 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 7, 2026

Weather Forecast

Patchy rain nearby
57.5°F
37.2°F
47.1°F
66%
0.08 in
82%
0%
9.2 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 3.67 μg/m3
PM10: 3.83 μg/m3
Carbon Monoxide: 151.7 μg/m3
Nitrogen Dioxide: 5.28 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 64.28 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:54 AM
Sunset: 8:06 PM
Daylight: 14 hrs 23 mins
Moonrise: 1:04 AM
Moon Transit: 5:23 AM
Moonset: 9:46 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
5:22 PM - 7:52 PM

Minor Periods

9:16 AM - 10:46 AM
12:34 AM - 2:04 AM

Action Rating: 3 out of 5

Friday, May 8, 2026

Weather Forecast

Patchy rain nearby
58.9°F
37.3°F
46.6°F
79%
0 in
0%
0%
9.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 8.46 μg/m3
Carbon Monoxide: 217.37 μg/m3
Nitrogen Dioxide: 18.33 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 46.92 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:54 AM
Sunset: 8:07 PM
Daylight: 14 hrs 25 mins
Moonrise: 1:38 AM
Moon Transit: 6:11 AM
Moonset: 10:52 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

5:41 AM - 8:11 AM
6:10 PM - 8:40 PM

Minor Periods

10:22 AM - 11:52 AM
1:08 AM - 2:38 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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