Water Temperature of Lake Mendota in Madison, WI
Current Water Temperature
Measurement Time: Friday, May 1, 2026, 10:15 AM CDT
Temperature Locations
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Local Points of Interest
Maple Bluff, WI; Shorewood Hills, WI; Middleton, WI; Waunakee, WIStation 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

Five Day Weather Forecast

Fri
H: 50°F
L: 37°F

Sat
H: 53°F
L: 31°F

Sun
H: 63°F
L: 42°F

Mon
H: 68°F
L: 41°F

Tue
H: 55°F
L: 39°F
Air Quality
Nitrogen Dioxide: 6.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 60 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:59 PM
Daylight: 14 hrs 8 mins
Moon Transit: 12:26 AM
Moonset: 5:23 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:24 AM - 2:54 PM
Minor Periods
7:59 PM - 9:29 PM4:53 AM - 6:23 AM
Action Rating: 4 out of 5
Freeze Warning issued May 1 at 7:58AM CDT until May 2 at 8:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 7:58 AM
Expires: Fri May 1, 2026, 4:00 PM
* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Fond du Lac, Dane, Green, Iowa, Lafayette, Rock, Dodge, and Jefferson Counties. * WHEN...From midnight tonight to 8 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
Freeze Warning issued May 1 at 7:58AM CDT until May 2 at 8:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 7:58 AM
Expires: Fri May 1, 2026, 4:00 PM
* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Columbia, Green Lake, Marquette, and Sauk Counties. * WHEN...From midnight tonight to 8 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Take steps now to protect tender plants from the cold.
Flood Warning issued May 1 at 4:21AM CDT until May 5 at 1:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 4:21 AM
Expires: Fri May 1, 2026, 4:30 PM
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson 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 Tuesday morning. * IMPACTS...At 11.0 feet, In the Town of Lake Koshkonong, floodwaters affect Vets Lane, Blackhawk Island Road, and Oxbow Bend Road. There is widespread flooding of roads and docks in the Town of Koshkonong and Town of Sumner including Vets Lane, Blackhawk Island Road and Oxbow Bend Road. * ADDITIONAL DETAILS... - At 4:00 AM CDT Friday the stage was 10.8 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Friday was 10.9 feet. - Forecast...The river is expected to fall below flood stage Monday evening and continue falling to 9.4 feet Thursday evening. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 10.6 feet on 04/07/2007. - 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 100 PM CDT.
Flood Warning issued May 1 at 4:21AM CDT until May 3 at 1:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 4:21 AM
Expires: Fri May 1, 2026, 4:30 PM
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson 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 early Sunday morning. * IMPACTS...At 16.5 feet, In the Fort Atkinson area, the following roads are impacted: Sinnissippi Drive, Bark River Road from Kutz Road to Rock River Road, and Rock River Road from Highway 106 to the Fort Atkinson city limits. Water is in park land near the river in Fort Atkinson. * ADDITIONAL DETAILS... - At 4:00 AM CDT Friday the stage was 16.4 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Friday was 16.5 feet. - Forecast...The river is expected to rise to a crest of 16.4 feet this morning. It will then fall below flood stage tomorrow evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.4 feet on 03/18/2009. - 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 100 PM CDT.
Flood Warning issued May 1 at 11:09AM CDT until May 3 at 7:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 11:09 AM
Expires: Fri May 1, 2026, 11:15 PM
...The Flood Warning is extended 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 Rock and Winnebago Counties. ...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Newville affecting Rock County. 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 Jefferson affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Fort Atkinson. * WHEN...Until Sunday morning. * IMPACTS...At 16.5 feet, In the Fort Atkinson area, the following roads are impacted: Sinnissippi Drive, Bark River Road from Kutz Road to Rock River Road, and Rock River Road from Highway 106 to the Fort Atkinson city limits. Water is in park land near the river in Fort Atkinson. * ADDITIONAL DETAILS... - At 10:00 AM CDT Friday the stage was 16.3 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Friday was 16.5 feet. - Forecast...The river is expected to fall below flood stage early Sunday morning and continue falling to 14.6 feet Friday, May 08. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.2 feet on 04/06/2007. - 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 1215 PM CDT.
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.01 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 68.44 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:59 PM
Daylight: 14 hrs 8 mins
Moon Transit: 12:26 AM
Moonset: 5:23 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:24 AM - 2:54 PM
Minor Periods
7:59 PM - 9:29 PM4:53 AM - 6:23 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.28 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 69.36 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:00 PM
Daylight: 14 hrs 11 mins
Moon Transit: 1:12 AM
Moonset: 5:49 AM
Moon Phase: Full
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:42 AM - 3:12 AM1:11 PM - 3:41 PM
Minor Periods
9:04 PM - 10:34 PM5:19 AM - 6:49 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 83.04 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:01 PM
Daylight: 14 hrs 13 mins
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 AM2:00 PM - 4:30 PM
Minor Periods
10:07 PM - 11:37 PM5:52 AM - 7:22 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.17 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 79.76 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:03 PM
Daylight: 14 hrs 16 mins
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 AM2:50 PM - 5:20 PM
Minor Periods
12:00 AM - 12:00 AM6:31 AM - 8:01 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 74.08 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:04 PM
Daylight: 14 hrs 18 mins
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 AM3:42 PM - 6:12 PM
Minor Periods
7:19 AM - 8:49 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
