Marine Weather and Tide Forecast for Madison, WI
 | Sunrise 5:24 AM Sunset 8:24 PM Moonrise 3:08 AM Moonset 4:24 PM |
LMZ644 Port Washington To North Point Light Wi- 505 Am Cdt Fri May 23 2025
Today - Northwest wind 5 to 10 knots veering east late in the afternoon. Partly Sunny. Waves around 1 foot.
Tonight - Southeast wind 5 to 10 knots easing to 5 knots late in the evening, then backing north after midnight becoming north 5 knots early in the morning. Mostly cloudy through around midnight then clearing. Waves around 1 foot.
Saturday - Northwest wind 5 knots becoming northeast late in the morning, then becoming northeast 5 to 10 knots early in the afternoon veering east late in the afternoon. Mostly Sunny. Waves around 1 foot.
Saturday night - Southeast wind 5 to 10 knots becoming south late in the evening, then veering west after midnight veering northwest early in the morning. Partly cloudy. Waves nearly calm.
LMZ600
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7 Day Forecast for Marine Location Near Madison, WI
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Area Discussion for Milwaukee/Sullivan, WI
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FXUS63 KMKX 230850 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 350 AM CDT Fri May 23 2025
KEY MESSAGES
- Generally dry conditions with below normal temperatures are expected through the Memorial Day weekend, then slowly moderate closer to seasonal normals by the end of next week.
SHORT TERM
Issued 350 AM CDT Fri May 23 2025
Today through Saturday:
High pressure will slowly move southeast toward the region during this period. General cyclonic flow at 500 mb should linger across the region as well, which will bring periodic rounds of middle level clouds through the region. In addition, diurnal stratocumulus clouds should also develop with daytime heating today and Saturday.
Some CAMs are suggesting the possibility of sprinkles or very light showers developing this afternoon and mainly Friday afternoon, and some forecast soundings are showing very weak mean layer CAPE each day. Not sure if there is enough upward vertical motion and moisture for a shower to develop today and Friday, so left forecast dry for now.
Below normal temperatures are expected during this period, with winds shifting onshore this afternoon and Saturday afternoon, keeping areas near the lake the coolest. Highs in the lower to middle 60s are expected well inland each day, with 50s closer to the lake. Lows tonight may drop into the upper 30s in parts of the inland areas, which may bring patchy frost.
Wood
LONG TERM
Issued 350 AM CDT Fri May 23 2025
Saturday night through Thursday:
We will remain in a stagnant upper level pattern through the rest of Memorial Day weekend. A middle level (500 mb) trough will extend from Maine to northern Minnesota Saturday evening, shifting through the area later Saturday night into Sunday.
Subtle ripples along this trough will cause periods of clouds and the potential for some sprinkles, but otherwise quiet weather will prevail for southern Wisconsin.
Temperatures will remain below normal with highs in the 60s.
Wind will be light and generally out of the northeast, which will keep lakeshore temps from getting out of the 50s.
The western extension of that upper trough will close off over the Dakotas Tuesday morning, when the entrance region of the upper jet shifts overhead. This will bring our next chance for rain showers into southern Wisconsin Tuesday.
That low is expected to sit over the upper Great Lakes until at least Friday. Moisture looks sparse, so our weather should probably be cooler than normal with cloudy skies with intermittent light rain showers and maybe a few rumbles of thunder. Temperatures may moderate closer to seasonal normals by the end of the week.
The ECMWF moves that closed upper low out of the region Friday night, but the GFS keeps it overhead all the way through the following weekend. Upper lows like this are not easy for models or meteorologists to predict, so keep up with the forecast.
Cronce
AVIATION
Issued 350 AM CDT Fri May 23 2025
Middle level clouds will move through the area early this morning, with more areas of these clouds possibly moving through at times into Saturday. In addition, scattered to broken diurnal cumulus clouds should develop this afternoon and again Saturday afternoon. There may be a few sprinkles or light rain showers that occur as well each afternoon, though will leave out of TAFs for now. Light winds will become north today and again Saturday, with a easterly lake breeze for terminals near the lake this afternoon and Saturday afternoon.
Wood
MARINE
Issued 350 AM CDT Fri May 23 2025
Low pressure around 29.7 inches over Lake Ontario will move east today. Northwest winds will gradually weaken today in southern portions of the lake, and tonight to the north. High pressure around 30.3 inches will then build into the region through this weekend and into Memorial Day. Winds should generally be light from the north to northeast during this period.
Wood
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM...None.
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 350 AM CDT Fri May 23 2025
KEY MESSAGES
- Generally dry conditions with below normal temperatures are expected through the Memorial Day weekend, then slowly moderate closer to seasonal normals by the end of next week.
SHORT TERM
Issued 350 AM CDT Fri May 23 2025
Today through Saturday:
High pressure will slowly move southeast toward the region during this period. General cyclonic flow at 500 mb should linger across the region as well, which will bring periodic rounds of middle level clouds through the region. In addition, diurnal stratocumulus clouds should also develop with daytime heating today and Saturday.
Some CAMs are suggesting the possibility of sprinkles or very light showers developing this afternoon and mainly Friday afternoon, and some forecast soundings are showing very weak mean layer CAPE each day. Not sure if there is enough upward vertical motion and moisture for a shower to develop today and Friday, so left forecast dry for now.
Below normal temperatures are expected during this period, with winds shifting onshore this afternoon and Saturday afternoon, keeping areas near the lake the coolest. Highs in the lower to middle 60s are expected well inland each day, with 50s closer to the lake. Lows tonight may drop into the upper 30s in parts of the inland areas, which may bring patchy frost.
Wood
LONG TERM
Issued 350 AM CDT Fri May 23 2025
Saturday night through Thursday:
We will remain in a stagnant upper level pattern through the rest of Memorial Day weekend. A middle level (500 mb) trough will extend from Maine to northern Minnesota Saturday evening, shifting through the area later Saturday night into Sunday.
Subtle ripples along this trough will cause periods of clouds and the potential for some sprinkles, but otherwise quiet weather will prevail for southern Wisconsin.
Temperatures will remain below normal with highs in the 60s.
Wind will be light and generally out of the northeast, which will keep lakeshore temps from getting out of the 50s.
The western extension of that upper trough will close off over the Dakotas Tuesday morning, when the entrance region of the upper jet shifts overhead. This will bring our next chance for rain showers into southern Wisconsin Tuesday.
That low is expected to sit over the upper Great Lakes until at least Friday. Moisture looks sparse, so our weather should probably be cooler than normal with cloudy skies with intermittent light rain showers and maybe a few rumbles of thunder. Temperatures may moderate closer to seasonal normals by the end of the week.
The ECMWF moves that closed upper low out of the region Friday night, but the GFS keeps it overhead all the way through the following weekend. Upper lows like this are not easy for models or meteorologists to predict, so keep up with the forecast.
Cronce
AVIATION
Issued 350 AM CDT Fri May 23 2025
Middle level clouds will move through the area early this morning, with more areas of these clouds possibly moving through at times into Saturday. In addition, scattered to broken diurnal cumulus clouds should develop this afternoon and again Saturday afternoon. There may be a few sprinkles or light rain showers that occur as well each afternoon, though will leave out of TAFs for now. Light winds will become north today and again Saturday, with a easterly lake breeze for terminals near the lake this afternoon and Saturday afternoon.
Wood
MARINE
Issued 350 AM CDT Fri May 23 2025
Low pressure around 29.7 inches over Lake Ontario will move east today. Northwest winds will gradually weaken today in southern portions of the lake, and tonight to the north. High pressure around 30.3 inches will then build into the region through this weekend and into Memorial Day. Winds should generally be light from the north to northeast during this period.
Wood
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM...None.
Link to 1 hour of 5 minute data for KMSN
Terminal Aerodrome Forecast (TAF) for KMSN
Wind History Graph: MSN
(wind in knots)
GEOS Local Image of Upper Mississippi Valley
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Milwaukee, WI,
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