Butler

... Frost advisory remains in effect from 2 am to 8 am EDT
Sunday...

* temperatures... in the upper 30s. Sheltered valleys in the higher
elevations could briefly drop below freezing early Sunday
morning.

* Impacts... unprotected outdoor plants would likely be damaged
or killed.

Precautionary/preparedness actions...

A frost advisory means that frost is possible. Sensitive outdoor
plants may be killed if left uncovered.

... Record low mean temperature tied at Pittsburgh yesterday...

The high temperature yesterday was 51 and the low was 37. This
gives a mean temperature of 44 which ties the record low mean
temperature for may 24th. The record was set in 1956.


... Record low temperature tied at Pittsburgh today...

The low this morning was 33. This ties the record low
temperature for may 25th. The record was set in 1925.


... Coldest temperature so late in the season tied at Pittsburgh...

The low of 33 this morning tied for the coldest temperature so
late in the Spring season. The latest occurrence of 33 degrees or
lower was set may 25th 1925.