Water Temperature of Lake Mendota in Madison, WI

Current Water Temperature

53.2°F

Measurement Time: Wednesday, May 6, 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

34.7°F
Clear
Clear
29.2°F
38.5°F
64%
WSW 6.3 mph
13.2 mph
33°F
28.9°F
0 in
0%
9 mi
1014 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 59°F
L: 38°F
Patchy rain nearby
Fri
H: 58°F
L: 37°F
Patchy rain nearby
Sat
H: 69°F
L: 42°F
Patchy rain nearby
Sun
H: 58°F
L: 40°F
Patchy rain nearby
Mon
H: 60°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 5.65 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 167.85 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 52 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

Frost Advisory issued May 6 at 6:51PM CDT until May 7 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 6:51 PM
Expires: Thu May 7, 2026, 3:00 AM

* WHAT...Temperatures as low as 30 will result in frost formation. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From 1 AM to 8 AM CDT Thursday. * 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.


Frost Advisory issued May 7 at 12:38AM CDT until May 7 at 8:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu May 7, 2026, 12:38 AM
Expires: Thu May 7, 2026, 8:00 AM

* WHAT...Temperatures as low as 30 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.


Flood Warning issued May 6 at 4:03PM CDT until May 7 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 4:03 PM
Expires: Thu May 7, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... 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 tomorrow 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 Wednesday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Wednesday was 9.3 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 7.8 feet Wednesday, May 13. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.2 feet on 05/04/1951. - 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 late tonight at 415 AM CDT.


Flood Warning issued May 6 at 9:54PM CDT until May 7 at 10:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 9:54 PM
Expires: Thu May 7, 2026, 10:00 AM

...The Flood Warning is extended 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 late tomorrow 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 9:00 PM CDT Wednesday the stage was 9.1 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Wednesday was 9.2 feet. - Forecast...The river is expected to fall below flood stage early Thursday morning and continue falling to 7.6 feet by Wednesday, May 13. - Flood stage is 9.0 feet. - 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 Thursday morning at 1000 AM CDT.
Thursday, May 7, 2026

Weather Forecast

Patchy rain nearby
59.4°F
37.9°F
46.6°F
60%
0.02 in
89%
0%
15.4 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 7.18 μg/m3
PM10: 7.69 μg/m3
Carbon Monoxide: 158.01 μg/m3
Nitrogen Dioxide: 6.29 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 61.72 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
58.4°F
37.4°F
48.4°F
75%
0.06 in
83%
0%
8.5 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 16.14 μg/m3
PM10: 17.45 μg/m3
Carbon Monoxide: 175.53 μg/m3
Nitrogen Dioxide: 11.75 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 63.08 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

Patchy rain nearby
68.7°F
42.4°F
55.5°F
79%
0.01 in
72%
0%
16.8 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 12.95 μg/m3
PM10: 13.97 μg/m3
Carbon Monoxide: 164.73 μg/m3
Nitrogen Dioxide: 9.47 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 68.64 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
58°F
39.5°F
49.6°F
74%
0.2 in
86%
0%
16.3 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 5.21 μg/m3
PM10: 5.59 μg/m3
Carbon Monoxide: 163.35 μg/m3
Nitrogen Dioxide: 5.83 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 70.24 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

Monday, May 11, 2026

Weather Forecast

Patchy rain nearby
59.7°F
34.3°F
44.5°F
69%
0.05 in
57%
0%
10.5 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 2.4 μg/m3
PM10: 2.47 μg/m3
Carbon Monoxide: 156.48 μg/m3
Nitrogen Dioxide: 7.2 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 56.54 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:54 AM
Sunset: 8:10 PM
Daylight: 14 hrs 32 mins
Moonrise: 2:51 AM
Moon Transit: 8:28 AM
Moonset: 2:16 PM
Moon Phase: Last Quarter
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

7:58 AM - 10:28 AM
8:25 PM - 10:55 PM

Minor Periods

1:46 PM - 3:16 PM
2:21 AM - 3:51 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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