Wis. Stat. § 175.095: Daylight saving time.

(1) Notwithstanding s. 175.09 (1), the standard of time shall be as provided in sub. (2) during the period stated therein.

(2) From 2 a.m. on the 2nd Sunday in March until 2 a.m. on the first Sunday in November of each year, the standard of time in this state shall be one hour in advance of that prescribed in s. 175.09 (1).