National Weather Service Weather Forecast Office

Low temperatures from last night recorded at ASOS and AWOS sites across South Central and Southeast Wisconsin for 12 hours ending at 7 am. All of the airport sites except Milwaukee cooled to at least the freezing mark last night...with six sites cold enough to verify the freeze warning criteria of temperatures of 28F or less.

A summary of Cooperative Observer 24 hour (7am April 5th, 2012 to 7am April 6th, 2012) minimum temperatures:

ARLINGTON-UW FARM: 23
BARABOO-1 NE-HAM: 29
BARABOO-WWTP:  25
BEAVER DAM-WWTP: 30
BELGIUM-1 NW-WWTP: 30
BELOIT-COLLEGE: 30
BROWN DEER-NORTH-HAM: 32
BURLINGTON-WWTP: 31
CAMPBELLSPORT-5 W-HAM: 28
DARLINGTON-2 NE: 30
DARLINGTON-WWTP: 26
DE FOREST-HAM: 28
DELAVAN-WWTP: 30
E. TROY-4NE-BEULAH-HAM: 31
ELKHORN-4 NW-HAM: 32
ELKHORN-EAST-HAM: 33
FT. ATKINSON-SW-WWTP: 30
FOND DU LAC-2 SW: 32
HALES CORNERS-WHITNALL: 24
HARTFORD-WWTP: 30
HORICON-WWTP: 32
HOLY HILL-2 E: 27
JACKSON-COOP: 31
JEFFERSON-WWTP: 33
LAKE MILLS-WWTP: 29
LA VALLE-4N-REDSTONE L: 28
LODI-WWTP: 26
MADISON-ARBORETUM: 28
MADISON-CHARMANY FARM: 30
MADISON-NORTHEAST-HAM: 30
MADISON-SW-NAKOMA-HAM: 33
MARKESAN-WWTP: 33
MERTON-1N-LAKE KEESUS: 33
MILWAUKEE-TIMMERMAN:32 
MILWAUKEE-MT MARY COLL: 33
MONROE-WWTP: 29
OCONOMOWOC-3 NW-HAM: 35
OCONOMOWOC-WWTP: 34
PADDOCK LAKE-WWTP: 29
PORTAGE-WWTP: 29
RICHFIELD: 31 
RACINE-LAKESHORE-WWTP: 39
ROCHESTER-1 S-WWTP: 29
SAUK CITY-1 SW-WWTP: 24
SAUKVILLE-WWTP: 29
SHEBOYGAN-SOUTHWEST: 35
SHEBOYGAN-4 S-WWTP: 37
S. MKE-WWTP-LAKESHORE: 37
SLINGER-1 NW-WWTP: 31
TAYCHEEDAH-ST. PETER: 30
UNION GROVE-WWTP: 28
WATERLOO-WWTP: 31
WATERTOWN-WEST-HAM: 32
WATERTOWN-WWTP: 33
WEST ALLIS-HAM: 30
WEST BEND-1 SW-WATER: 29
WEST BEND-HAM: 32
WHITEWATER-WWTP: 28
WISCONSIN DELLS-HAM: 28

REM/OBK