According to the Twin Cities climate records, the coldest first half of June (1st through
15th) was in 1945 when the temperature averaged 56 degrees F, or about
10 degrees below normal. The first 15 days of this June (1998) averaged just
under 59 degrees F, about 7 degrees below normal, ranking as the second coldest
such period in the historical record (back to 1891).
Mark Seeley
Professor and Extension Climatologist
Department of Soil, Water, and Climate
University of Minnesota