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Oshkosh, Wisconsin 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Oshkosh WI
National Weather Service Forecast for: Oshkosh WI
Issued by: National Weather Service Green Bay, WI
Updated: 3:55 pm CDT Mar 30, 2025
 
This
Afternoon
This Afternoon: Rain likely.  Cloudy, with a steady temperature around 35. North northeast wind around 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely

Tonight

Tonight: Rain and snow likely before 11pm, then snow.  Low around 27. North northwest wind 13 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Rain/Snow
then Snow
Monday

Monday: Mostly sunny, with a high near 38. North northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Mostly Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 24. North northwest wind around 7 mph becoming east after midnight.
Mostly Clear

Tuesday

Tuesday: Mostly sunny, with a high near 39. East southeast wind 6 to 13 mph, with gusts as high as 23 mph.
Mostly Sunny

Tuesday
Night
Tuesday Night: Snow likely before 10pm, then rain and snow between 10pm and 4am, then rain after 4am.  Low around 31. Chance of precipitation is 90%.
Rain/Snow
Likely then
Rain/Snow
Wednesday

Wednesday: Rain.  High near 52. Breezy.  Chance of precipitation is 100%.
Rain and
Breezy
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 35.
Partly Cloudy

Thursday

Thursday: Mostly sunny, with a high near 47.
Mostly Sunny

Hi 35 °F Lo 27 °F Hi 38 °F Lo 24 °F Hi 39 °F Lo 31 °F Hi 52 °F Lo 35 °F Hi 47 °F

Hazardous Weather Outlook
 

This Afternoon
 
Rain likely. Cloudy, with a steady temperature around 35. North northeast wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
Rain and snow likely before 11pm, then snow. Low around 27. North northwest wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
 
Mostly sunny, with a high near 38. North northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Monday Night
 
Mostly clear, with a low around 24. North northwest wind around 7 mph becoming east after midnight.
Tuesday
 
Mostly sunny, with a high near 39. East southeast wind 6 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
 
Snow likely before 10pm, then rain and snow between 10pm and 4am, then rain after 4am. Low around 31. Chance of precipitation is 90%.
Wednesday
 
Rain. High near 52. Breezy. Chance of precipitation is 100%.
Wednesday Night
 
Partly cloudy, with a low around 35.
Thursday
 
Mostly sunny, with a high near 47.
Thursday Night
 
Partly cloudy, with a low around 30.
Friday
 
Mostly sunny, with a high near 47.
Friday Night
 
Partly cloudy, with a low around 30.
Saturday
 
Mostly sunny, with a high near 50.
Saturday Night
 
Partly cloudy, with a low around 29.
Sunday
 
Mostly sunny, with a high near 44.

 

Forecast from NOAA-NWS for Oshkosh WI.

Weather Forecast Discussion
953
FXUS63 KGRB 302140
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
440 PM CDT Sun Mar 30 2025

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

- Rain/freezing rain will transition to snow from northwest to
  southeast this afternoon into tonight. Additional ice
  accumulations up to 0.25 inches is anticipated across the
  Northwoods through early this evening before transitioning to
  snow. Snow accumulations of 1 to 4 inches is forecast for
  locations north and west of the Fox Valley. Up to 1 inch of snow
  and a light glaze of ice is forecast for locations in the Fox
  Valley and lakeshore areas. Additional power outages and tree
  limb damage is anticipated for locations mainly across the
  Northwoods due to the recent icing, wet snow, and gusty winds
  expected through tonight.

- The recent, ongoing, and any additional widespread
  rainfall/precipitation this week will lead to rising river and
  stream levels and minor flooding for some locations.

- Another impactful period of precipitation is likely Tuesday into
  Wednesday with potential for accumulating snowfall, rainfall,
  and thunderstorms.

&&

.DISCUSSION...
Issued at 440 PM CDT Sun Mar 30 2025

Short Term...Tonight and Monday

The ongoing wintry precipitation associated with a low pressure
system moving across the Midwest remains to be the main focus from
this forecast period.

This evening through Monday morning...As of this afternoon, the
surface low pressure system was located over southern Lake MI and
slowly tracking northeast. Meanwhile, the deformation zone and areas
of f-gen were beginning to set up over northern WI. This coincided
with a large band of precipitation over the Northwoods producing
rain, freezing rain, sleet, and snow. Another band of broken rain
and freezing rain was lifting across east-central WI this afternoon.
As the surface low continues to track northeastward this evening and
overnight, the elevated warm layer producing the wintry mix will
also move eastward across the area. This will lead to a gradual
transition to a brief period of a wintry mix to all snow from west
to east through early this evening. The snow will then come to an
end by early Monday morning.

Additional ice accumulations of 0.05 to 0.25 inches will be mainly
focused across the Northwoods and will mainly fall through early
this evening before switching over to snow. Therefore, kept the Ice
Storm Warning as is with an end time of 7 PM this evening. Minor ice
accumulations or a light glaze are possible elsewhere as the brief
period of the wintry mix moves over other locations.

Snow accumulations have increased from the previous forecast as the
surface low will deepen as it moves further northeast this evening,
allowing for a better organized deformation zone to develop over the
area. Snow accumulations of 1 to 4 inches is forecast by early
Monday morning for locations north and west of the Fox Valley with
up to an inch in the Fox Valley and lakeshore areas. In addition to
the snowfall, gusty northerly winds of 25 to 30 mph are expected
overnight. The combination of the ongoing ice impacts (several
thousands without power across the Northwoods), wet snow, and gusty
winds will likely lead to additional impacts with more power outages
and tree limb damage. Therefore, after collaborating with
surrounding offices, decided to issue a Winter Storm Warning into
this evening/night for the areas where the Ice Storm Warning remains
in effect until 7 PM. The Winter Storm Warnings will then expire
from northwest to southeast as the snow comes to an end tonight.

Monday...Surface high pressure will reign over the area for Monday,
bringing the return of sunshine. However, temperatures will remain
below normal due to the colder air filtering down with the high
pressure. Highs to range from the low 30s to low 40s.

Long Term...Monday Night Through Sunday

Another messy system is taking shape for the middle of this week,
which may bring potential impacts to the region. P-type appears to
be another challenge with this system as models have the surface low
passing somewhere over the Upper Mississippi Valley. Depending on
where the low track sets up, there is also potential for the area to
be in the warm sector, which could present the potential for
thunderstorms. There is also potential for the area to see
accumulating snow as well. With many important details to still be
worked out, be sure to monitor the forecast for changes. A less
active pattern with dry conditions is then anticipated through the
end of this week.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 103 PM CDT Sun Mar 30 2025

Very poor flying conditions will continue for the remainder of the
day and into tonight with mainly IFR cigs. While periods of rain
will remain over the east-central WI TAF sites through late this
afternoon, a wintry mix of rain, freezing rain, sleet, and snow is
expected over the central and north-central WI TAF sites. These
wintry mix conditions will gradually move eastward and arrive at
the east-central WI TAF sites around 00z Mon. As this is
happening, a change over to all snow will occur at the central and
north-central WI TAF sites. All precipitation will exit the region
from west to east by early Monday morning. Gusty NE winds will
shift northerly tonight, with gusts to 20 to 25 kts.

VFR conditions will return from west to east Monday morning as
high pressure builds over the area.

&&

.HYDROLOGY...
Issued at 440 PM CDT Sun Mar 30 2025

Recent rainfall has led to saturated ground across much of the
area with rises on area rivers/streams, including near bankfull
or minor flooding at a few locations, especially in the Wisconsin
and Oconto areas. With additional precipitation continuing through
tonight and another bout of impactful rain/snow likely for mid-
week, additional river rises and elevated river levels are likely
into the coming week.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Storm Warning until 10 PM CDT this evening for WIZ005.

Ice Storm Warning until 7 PM CDT this evening for WIZ010>013-
018>022-030-031-035>037-073-074.

Winter Storm Warning until 1 AM CDT Monday for WIZ010>012-018-
019-030-035.

Winter Storm Warning until 4 AM CDT Monday for WIZ013-020>022-
031-036-037-073-074.
&&

$$

DISCUSSION.....Kruk/Kruk
AVIATION.......Kruk
HYDROLOGY......Kruk
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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