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

70°F
Sunny
Sunny
70°F
63.8°F
31%
W 7.8 mph
16.4 mph
63.1°F
36.8°F
0 in
25%
9 mi
1003 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 73°F
L: 47°F
Patchy rain nearby
Mon
H: 70°F
L: 45°F
Sunny
Tue
H: 55°F
L: 42°F
Sunny
Wed
H: 52°F
L: 36°F
Moderate rain
Thu
H: 56°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 7.95 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 178.85 μg/m3
Nitrogen Dioxide: 10.05 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:54 AM
Sunset: 8:01 PM
Daylight: 14 hrs 13 mins
Moonrise: 10:37 PM
Moon Transit: 2:00 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
2:00 PM - 4:30 PM

Minor Periods

10:07 PM - 11:37 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Flood Warning issued May 3 at 4:26AM CDT until May 3 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 4:26 AM
Expires: Sun May 3, 2026, 4:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is cancelled for the following rivers in Wisconsin... Rock River At Newville affecting Rock County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Fort Atkinson. * WHEN...Until this evening. * IMPACTS...At 16.0 feet, Floodwaters affect some park land and boat launches. * ADDITIONAL DETAILS... - At 4:00 AM CDT Sunday the stage was 16.0 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Sunday was 16.2 feet. - Forecast...The river is expected to fall below flood stage this afternoon and continue falling to 14.6 feet Saturday evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.2 feet on 08/29/2007. - http://www.weather.gov/safety/flood

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued early this morning at 530 AM CDT.


Flood Warning issued May 3 at 4:26AM CDT until May 6 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 4:26 AM
Expires: Sun May 3, 2026, 4:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is cancelled for the following rivers in Wisconsin... Rock River At Newville affecting Rock County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until early Wednesday afternoon. * 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 4:00 AM CDT Sunday the stage was 10.4 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Sunday was 10.6 feet. - Forecast...The river is expected to fall below flood stage Wednesday morning and continue falling to 9.4 feet Saturday evening. - 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

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued early this morning at 530 AM CDT.


Flood Warning issued May 3 at 10:59AM CDT until May 3 at 7:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 10:59 AM
Expires: Sun May 3, 2026, 7:00 PM

...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 At Fort Atkinson affecting Jefferson County. 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 Fort Atkinson. * WHEN...Until this evening. * IMPACTS...At 16.0 feet, Floodwaters affect some park land and boat launches. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 16.0 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Sunday was 16.2 feet. - Forecast...The river is expected to fall below flood stage this afternoon and continue falling to 14.5 feet Sunday, May 10. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.2 feet on 08/29/2007. - http://www.weather.gov/safety/flood

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued this evening at 700 PM CDT.


Flood Warning issued May 3 at 10:59AM CDT until May 6 at 1:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun May 3, 2026, 10:59 AM
Expires: Sun May 3, 2026, 11:00 PM

...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 At Fort Atkinson affecting Jefferson County. 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 10:00 AM 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 10:00 AM CDT Sunday was 10.6 feet. - Forecast...The river is expected to rise to a crest of 10.3 feet this afternoon. It will then fall below flood stage Tuesday evening. - 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

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued this evening at 700 PM CDT.


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.
Sunday, May 3, 2026

Weather Forecast

Patchy rain nearby
72.5°F
46.9°F
57.9°F
49%
0.04 in
84%
0%
22.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.17 μg/m3
PM10: 8.08 μg/m3
Carbon Monoxide: 154.41 μg/m3
Nitrogen Dioxide: 5.01 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 79.36 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:54 AM
Sunset: 8:01 PM
Daylight: 14 hrs 13 mins
Moonrise: 10:37 PM
Moon Transit: 2:00 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
2:00 PM - 4:30 PM

Minor Periods

10:07 PM - 11:37 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Patchy rain nearby
70.2°F
45.2°F
56.5°F
66%
0.02 in
89%
0%
20.4 mph
6.2


Air Quality

AQI: 1 - Good
PM2.5: 7.05 μg/m3
PM10: 8.22 μg/m3
Carbon Monoxide: 160.29 μg/m3
Nitrogen Dioxide: 6.07 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 80.88 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
54.6°F
41.9°F
47.5°F
59%
0 in
0%
0%
14.1 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 4.38 μg/m3
PM10: 4.78 μg/m3
Carbon Monoxide: 146.61 μg/m3
Nitrogen Dioxide: 4.72 μg/m3
Sulphur Dioxide: 1.77 μg/m3
Ozone: 74.64 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
51.7°F
35.9°F
43.2°F
60%
0 in
0%
0%
12.8 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 2.73 μg/m3
PM10: 2.8 μg/m3
Carbon Monoxide: 154.03 μg/m3
Nitrogen Dioxide: 4.13 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 69.32 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

Moderate rain
55.6°F
33.2°F
44.6°F
71%
0.22 in
81%
0%
10.7 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 2.93 μg/m3
PM10: 2.99 μg/m3
Carbon Monoxide: 158.77 μg/m3
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 54.69 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

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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