The average high was 65.2, which is 3.3 degrees below normal.
The average low was 45.8, which is 0.7 above normal.
The highest temperature was 86 degrees on May 30th and the lowest temperature was 27 degrees on May 4th.
It wasn’t as wet as April. Wausau received 2.93″ of moisture which is .61″ less than normal. Just .10″ of snow fell which happens to be the normal amount. By the way that occurred on May 3rd. The heaviest precipitation occurred in Wausau on May 22nd when 1.08″ of rain fell.
Other Notable Events
On May 9th a micro low pressure system developed behind a line of moderate thunderstorms. We call this a “wake” low pressure system. It caused fairly widespread winds from the east up to 60 mph. There was significant tree damage in the area.
On May 12th, hail to the size of golf balls pelted our region.
On May 17th, frost was reported in quite a few spots.
On May 27th, frost was reported in quite a few areas again.
May 22nd, brought the worst weather of the month in the TV-9 viewing area with several tornadoes and hail as big as softballs in southern sections. The main tornado tracked over 70 miles from Monroe County northeast across portions of Juneau, Wood, and Portage Counties causing heavy damage in spots.
This post was written by Tony Schumacher on May 31, 2011