Weather for Madison, Wisconsin
Current Weather
Five Day Weather Forecast
Sat
H: 57°F
L: 35°F
Sun
H: 61°F
L: 43°F
Mon
H: 71°F
L: 42°F
Tue
H: 53°F
L: 35°F
Wed
H: 52°F
L: 34°F
Air Quality
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 53 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:00 PM
Daylight: 14 hrs 10 mins
Moon Transit: 1:12 AM
Moonset: 5:50 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
9:03 PM - 10:33 PM5:20 AM - 6:50 AM
Action Rating: 3 out of 5
Freeze Warning issued May 1 at 6:45PM CDT until May 2 at 8:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 6:45 PM
Expires: Sat May 2, 2026, 2:45 AM
* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Portions of east central, south central, and southeast Wisconsin. * 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 11:13PM CDT until May 2 at 8:00AM CDT by NWS Milwaukee/Sullivan WI
Effective: Fri May 1, 2026, 11:13 PM
Expires: Sat May 2, 2026, 7:15 AM
* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...Until 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 11:09AM CDT until May 5 at 1:00PM 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 near Lake Koshkonong. * WHEN...Until early Tuesday 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 10:00 AM CDT Friday the stage was 10.7 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Friday was 10.9 feet. - Forecast...The river is expected to fall below flood stage Tuesday morning and continue falling to 9.3 feet Friday, May 08. - 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 1215 PM CDT.
Flood Warning issued May 1 at 11:09AM 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. * WHERE...Rock River at Newville. * WHEN...Until further notice. * IMPACTS...At 6.5 feet, Floodwaters are in the back yards of homes and businesses near east Mallwood Road Drive in Newville. * ADDITIONAL DETAILS... - At 10:00 AM CDT Friday the stage was 6.9 feet. - Bankfull stage is 5.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Friday was 7.0 feet. - Forecast...No forecast is available for this location. - Flood stage is 6.5 feet. - Flood History...This crest compares to a previous crest of 7.1 feet on 10/12/2019. - 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.
Flood Warning issued May 1 at 11:09AM CDT until May 7 at 1:00PM 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 Afton. * WHEN...Until early Thursday afternoon. * 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 10:00 AM CDT Friday the stage was 10.1 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Friday was 10.2 feet. - Forecast...The river is expected to rise to a crest of 10.1 feet this afternoon. 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 10.1 feet on 06/24/1996. - 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: 6.05 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 67.84 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:00 PM
Daylight: 14 hrs 10 mins
Moon Transit: 1:12 AM
Moonset: 5:50 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
9:03 PM - 10:33 PM5:20 AM - 6:50 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.47 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 80.12 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
10:06 PM - 11:36 PM5:52 AM - 7:22 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 84.96 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:02 PM
Daylight: 14 hrs 15 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: 4.93 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 73.96 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
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.21 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 65.92 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 8:05 PM
Daylight: 14 hrs 20 mins
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 AM4:33 PM - 7:03 PM
Minor Periods
8:15 AM - 9:45 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5