639
FXUS63 KARX 221750
AFDARX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
1250 PM CDT TUE SEP 22 2026
KEY MESSAGES
- SOME PATCHY TO SCATTERED FROST IN CENTRAL AND NORTH-CENTRAL
WISCONSIN LATE TONIGHT AND WEDNESDAY MORNING.
- THERE WILL BE A CHANCE OF RAIN WEST OF HIGHWAY 52 IN NORTHEAST
IOWA AND SOUTHEAST MINNESOTA FROM THURSDAY AFTERNOON INTO
THURSDAY NIGHT.
- MORE RAIN POSSIBLE FROM FRIDAY INTO THE UPCOMING WEEKEND.
DISCUSSION
ISSUED AT 1249 PM CDT TUE SEP 22 2026
TONIGHT
HIGH PRESSURE WILL PROVIDE LIGHT WINDS AND MOSTLY CLEAR SKIES
TONIGHT. THIS WILL ALLOW TEMPERATURES TO COOL MORE THAN THE PAST
SEVERAL NIGHTS. DUE TO THIS, LOWERED THE LOW TEMPERATURES IN
CENTRAL AND NORTH-CENTRAL WISCONSIN TO THE NBM 10TH PERCENTILE.
THESE TEMPERATURES WERE IN THE 30S. THIS WILL RESULT IN PATCHY
TO SCATTERED FROST. THIS WAS FAR TOO LITTLE TO ISSUE A FROST
ADVISORY.
WEDNESDAY INTO WEDNESDAY NIGHT
HIGH PRESSURE OVER THE GREAT LAKES WILL KEEP THE DRIFTLESS
REGION DRY. HIGH TEMPERATURES WILL BE IN THE LOWER TO MID-60S.
LOW TEMPERATURES WILL RANGE FROM THE MID-30S TO AROUND 50. THE
COLDEST TEMPERATURES WILL BE IN CENTRAL AND NORTH-CENTRAL
WISCONSIN.
THURSDAY AFTERNOON INTO THURSDAY NIGHT
A COLD FRONT WILL APPROACH THE DRIFTLESS REGION FROM THE
NORTHERN PLAINS. THIS MAY RESULT IN A CHANCE (20-50 PERCENT) OF
SHOWERS WEST OF HIGHWAY 52 IN NORTHEAST IOWA AND SOUTHEAST
MINNESOTA. HIGH TEMPERATURES WILL BE IN THE LOWER AND MID-60S.
LOW TEMPERATURES WILL RANGE FROM THE MID-40S TO LOWER 50S.
FRIDAY INTO THE WEEKEND
THE 500 MB RIDGE WILL SHIFT EAST OF THE AREA. THIS WILL ALLOW A
SHORTWAVE TROUGH TO MOVE INTO THE DRIFTLESS REGION. AS THIS
OCCURS, THERE WILL BE PERIODIC SHOWERS AND MAYBE A FEW STORMS.
HIGH TEMPERATURES WILL BE IN THE 60S AND LOW TEMPERATURES WILL
RANGE FROM THE MID-40S TO MID-50S.
AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/
ISSUED AT 1249 PM CDT TUE SEP 22 2026
CEILINGS WILL BE IN THE 2500 TO 4000 FEET RANGE THIS AFTERNOON.
WITH THE LOSS OF DIURNAL HEATING, SKIES WILL CLEAR THIS EVENING
AND REMAIN THAT WAY THROUGH MUCH OF WEDNESDAY MORNING. THERE MAY
BE SOME DENSE FOG IN THE WISCONSIN AND LOWER KICKAPOO RIVER
VALLEYS TONIGHT AND EARLY WEDNESDAY MORNING.
CLIMATE
ISSUED AT 1249 PM CDT TUE SEP 22 2026
DURING THE ASTRONOMICAL SUMMER OF 2026 (JUNE 21 THROUGH SEPTEMBER
21), IT WAS WARMER THAN THE LONG-TERM AVERAGE WITH HIGHLY
VARIABLE RAINFALL ACROSS THE DRIFTLESS REGION. AVERAGE
TEMPERATURES RANGED FROM 65.9°F AT MEDFORD TAYLOR COUNTY AIRPORT
(WI) TO 72.8°F TO GUTTENBERG LOCK AND DAM 10 (IA). RAINFALL
RANGED FROM 7.10 INCHES NEAR COLBY, WI TO 28.69 INCHES NEAR
SPRING VALLEY, MN.
LA CROSSE WAS THE 16TH WETTEST AND TIED WITH 2012 FOR THE 19TH
WARMEST. ROCHESTER MN HAD THEIR 10TH WARMEST AND 11TH WETTEST.
ROCHESTER HAD AN AVERAGE LOW TEMPERATURE OF 61.3°F. THIS WAS THE
WARMEST. THE PREVIOUS RECORD WAS 60.4°F IN 1947.
ARX WATCHES/WARNINGS/ADVISORIES
WI...NONE.
MN...NONE.
IA...NONE.
DISCUSSION...BOYNE
AVIATION...BOYNE
CLIMATE...BOYNE
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