Rain and possible thunderstorms this evening will possibly mix with or change to snow for time tonight as a cold front moves through the area, with only minor accumulations possible north and west of Madison. Tonight will be windy and a bit colder as the front passes with low temperatures falling into the lower 30s.
Christmas Eve day will be variably cloudy and colder with a chance for flurries, mainly in the afternoon and evening. High temperatures will reach the upper 30s. Pleasant weather is expected for the Christmas Day holiday with variably cloudy skies and mild high temperatures around 40 degrees.
Skies will become mostly cloudy and it will become breezy with a chance of rain and snow showers developing on Christmas Day night. Rain showers will continue Saturday, and may mix with snow again briefly Saturday night before ending. It will be windy and continued mild with high temperatures around 40 degrees. Sunday will be mostly cloudy, breezy and a little colder with high temperatures in the middle 30s.
Monday will be mostly cloudy and windy with rain developing late in the day or overnight. High temperatures will be near 40 degrees. Rain will mix with and change to light snow Monday night as temperatures fall just below the freezing mark. Any snow will come to an end on Tuesday and it will be mostly cloudy, breezy, and colder with high temperatures reaching the middle 30s.
Wednesday will be breezy and cooler with scattered flurries and high temperatures dropping into the upper 20s. New Year's Eve and New Year's Day will be partly sunny, breezy and seasonably cold with high temperatures in the middle to upper 20s.
***WIND ADVISORY FOR DANE COUNTY AND AREAS TO THE SOUTH AND EAST FROM 8 PM UNTIL 6 AM THURSDAY MORNING***
TONIGHT:
Mostly cloudy, breezy, and very mild with scattered showers and thunderstorms; an isolated severe thunderstorm is possible with high winds and hail. Becoming windy and colder overnight with rain showers possibly mixing with or changing to snow before ending; minor accumulations are possible north and west of Madison.
Low: 32
Wind: SE 10-20 MPH thins evening; SW 15-30 MPH with gusts to 40MPH+ overnight
CHRISTMAS EVE (THURSDAY):
Variable cloudiness and a little colder with a chance for flurries, mainly in the afternoon.
High: 39
Wind: W/SW 8-15 MPH
CHRISTMAS EVE NIGHT (THURSDAY NIGHT):
A slight chance for flurries in the evening, otherwise partly cloudy and a little colder.
Low: 24
Wind: NW 6-12 MPH
CHRISTMAS DAY (FRIDAY):
Variable cloudiness and mild (becoming mostly cloudy and breezy with a chance for rain and snow showers at night).
High: 40
Wind: N to SE 8-15 MPH
SATURDAY:
Mostly cloudy, windy, and mild with scattered rain showers (rain may be mixed with snow early in the morning and again at night before ending).
Low: 35
High: 40
SUNDAY:
Mostly cloudy, breezy, and a little colder.
Low: 31
High: 36
MONDAY:
Mostly cloudy and windy with rain developing late in the day (rain mixing with and changing to snow at night with some accumulation possible).
Low: 25
High: 39
TUESDAY:
Mostly cloudy, breezy, and colder with snow showers ending.
Low: 30
High: 34
WEDNESDAY:
Variable cloudiness, breezy, and a little colder with scattered flurries.
Low: 19
High: 27
NEW YEAR'S EVE (THURSDAY):
Partly sunny, breezy, and cold.
Low: 14
High: 27 (midnight temperature in the upper teens)
NEW YEAR'S DAY (FRIDAY):
Partly sunny, breezy, and continued cold.
Low: 12
High: 25
NOTES:
A WIND ADVISORY has been issued from 6 PM until 3 AM Thursday morning for north-central and northeastern Illinois, including the counties of WINNEBAGO, BOONE, and McHENRY (this includes the Rockford and Chicago metropolitan areas).
A WIND ADVISORY has been issued from 8 PM until 6 AM Thursday morning for southeastern, east-central, and part of south-central Wisconsin, including the counties of MARQUETTE, GREEN LAKE, COLUMBIA, DODGE, DANE, JEFFERSON, LAFAYETTE, GREEN, ROCK, and WALWORTH (this includes the Madison and Milwaukee metropolitan areas).
The Storm Prediction Center says that there is an ENHANCED RISK for severe thunderstorms for tonight for southeastern Illinois, as well as a SLIGHT RISK for severe thunderstorms over extreme eastern Iowa, the rest of Illinois, and extreme southern Wisconsin (south of a Dubuque, IA to Madison to Milwaukee line), and MARGINAL RISK for severe thunderstorms across the rest of eastern Iowa, and the rest of the southeastern half of Wisconsin (south and east of a Prairie du Chien to Wisconsin Dells to Marinette, MI line).
A strong low pressure system will move from northern Missouri to northern Wisconsin by early Thursday morning. South to southeasterly winds ahead of the storm is bringing humid and unseasonably mild air northward with record or near record breaking temperatures in the 50s and 60s. A cold front will pivot eastward through Iowa and Illinois into Wisconsin as the low pressure system moves through western Wisconsin this evening. A little clearing has developed ahead of the cold front which may destabilize the atmosphere a little further. Thunderstorms along and just ahead of the cold front will move through the central Midwest into this evening. Strong wind shear and high winds aloft could cause thunderstorms to rotate. High winds will be the main threat from these thunderstorms, although isolated tornadoes may also be possible, especially where temperatures can reach the middle to upper 50s or warmer, mainly across northern Illinois. The severe weather threat will end with the passage of the cold front. However, strong winds are expected along and behind the cold front outside of thunderstorms; these winds could gust to 40 to 50 MPH later tonight and early on Thursday morning.
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