Water Temperature of Lake Mendota in Madison, WI

Current Water Temperature

52.9°F

Measurement Time: Tuesday, May 5, 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

42.1°F
Clear
Clear
38.2°F
41.2°F
46%
NW 6 mph
12.7 mph
36.3°F
29.6°F
0 in
0%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 52°F
L: 38°F
Patchy rain nearby
Thu
H: 58°F
L: 35°F
Patchy rain nearby
Fri
H: 61°F
L: 44°F
Moderate rain
Sat
H: 66°F
L: 41°F
Patchy rain nearby
Sun
H: 59°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 6.15 μg/m3
PM10: 6.45 μg/m3
Carbon Monoxide: 153.85 μg/m3
Nitrogen Dioxide: 4.55 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 62 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

Frost Advisory issued May 6 at 12:41AM CDT until May 6 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 12:41 AM
Expires: Wed May 6, 2026, 8:00 AM

* WHAT...Low temperatures in the lower to middle 30s will result in frost formation. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold. Bring them indoors or cover them up.


Flood Warning issued May 5 at 4:05PM CDT until May 6 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Tue May 5, 2026, 4:05 PM
Expires: Wed May 6, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Wisconsin... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until tomorrow morning. * IMPACTS...At 10.0 feet, Floodwaters affect homes and boat docks in the Blackhawk Island area of Lake Koshkonong on the north side of the lake. Floodwaters spread over low spots on Blackhawk Island Road in the area where the Rock River enters the lake. * ADDITIONAL DETAILS... - At 3:00 PM CDT Tuesday the stage was 10.0 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Tuesday was 10.2 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 8.8 feet Tuesday, May 12. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 10.0 feet on 06/30/2013. - 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 late tonight at 415 AM CDT.


Flood Warning issued May 5 at 4:04PM CDT until May 8 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Tue May 5, 2026, 4:04 PM
Expires: Wed May 6, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Illinois...Wisconsin... Rock River At Afton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until Friday morning. * IMPACTS...At 9.0 feet, Floodwaters affect property of a home on South Christian Road on the east side of the river in the Afton area. There is minor erosional flood damage to lowland and agricultural land in the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 3:00 PM CDT Tuesday the stage was 9.3 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Tuesday was 9.5 feet. - Forecast...The river is expected to fall below flood stage early Friday morning and continue falling to 8.0 feet Tuesday, May 12. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.3 feet on 05/02/1921. - 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 late tonight at 415 AM CDT.


Flood Warning issued May 5 at 9:29PM CDT until May 7 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Tue May 5, 2026, 9:29 PM
Expires: Wed May 6, 2026, 9:30 AM

...The Flood Warning continues for the following rivers in Illinois...Wisconsin... 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 Near Lake Koshkonong affecting Rock and Jefferson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until early Thursday afternoon. * IMPACTS...At 9.0 feet, Floodwaters affect property of a home on South Christian Road on the east side of the river in the Afton area. There is minor erosional flood damage to lowland and agricultural land in the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Tuesday was 9.4 feet. - Forecast...The river is expected to rise to a crest of 9.3 feet just after midnight tonight. It will then fall below flood stage Thursday morning. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.3 feet on 05/02/1921. - 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 1030 PM CDT.


Flood Warning issued May 5 at 4:04PM CDT by NWS Milwaukee/Sullivan WI

Effective: Tue May 5, 2026, 4:04 PM
Expires: Wed May 6, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Wisconsin... ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge 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 Tuesday the stage was 10.1 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Tuesday was 10.3 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 10.1 feet on 03/23/2020. - 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 late tonight at 415 AM CDT.


Wednesday, May 6, 2026

Weather Forecast

Sunny
52°F
38.2°F
45°F
52%
0 in
0%
0%
13.4 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 5.65 μg/m3
PM10: 6 μg/m3
Carbon Monoxide: 157.97 μg/m3
Nitrogen Dioxide: 6.19 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 63.28 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
58.4°F
34.9°F
46.6°F
67%
0.06 in
85%
0%
14.3 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 5.02 μg/m3
PM10: 5.19 μg/m3
Carbon Monoxide: 153.21 μg/m3
Nitrogen Dioxide: 6.53 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 60.36 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
61.2°F
44.2°F
50.9°F
80%
0.06 in
86%
0%
11.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.7 μg/m3
PM10: 9.14 μg/m3
Carbon Monoxide: 176.49 μg/m3
Nitrogen Dioxide: 7.05 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 70.92 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

Saturday, May 9, 2026

Weather Forecast

Moderate rain
66°F
41°F
53°F
73%
0.28 in
71%
0%
19.5 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 7.81 μg/m3
PM10: 8.25 μg/m3
Carbon Monoxide: 162.86 μg/m3
Nitrogen Dioxide: 8.2 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 71.24 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:54 AM
Sunset: 8:08 PM
Daylight: 14 hrs 28 mins
Moonrise: 2:06 AM
Moon Transit: 6:58 AM
Moonset: 11:59 AM
Moon Phase: Last Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

6:28 AM - 8:58 AM
6:56 PM - 9:26 PM

Minor Periods

11:29 AM - 12:59 AM
1:36 AM - 3:06 AM

Action Rating: 2 out of 5

Sunday, May 10, 2026

Weather Forecast

Patchy rain nearby
59.2°F
40.7°F
48.9°F
75%
0.01 in
76%
0%
14.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 9.53 μg/m3
PM10: 10.03 μg/m3
Carbon Monoxide: 172.94 μg/m3
Nitrogen Dioxide: 8.07 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 55.23 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:54 AM
Sunset: 8:09 PM
Daylight: 14 hrs 30 mins
Moonrise: 2:30 AM
Moon Transit: 7:43 AM
Moonset: 1:07 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

12:37 AM - 2:07 PM
2:00 AM - 3:30 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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