Year	Date of Last Freeze	Temperature	Date of First Freeze	Temperature
1982	4/29/1982	27.63	10/17/1982	30.18
1983	5/10/1983	26.80	9/24/1983	30.52
1984	5/17/1984	31.89	11/2/1984	27.36
1985	4/17/1985	30.24	10/2/1985	31.89
1986	5/4/1986	26.51	10/7/1986	31.84
1987	5/6/1987	31.89	10/4/1987	29.62
1988	4/26/1988	29.70	10/4/1988	30.72
1989	4/24/1989	25.05	9/27/1989	31.77
1990	4/19/1990	27.90	10/20/1990	30.04
1991	4/18/1991	31.21	9/21/1991	31.55
1992	5/7/1992	31.35	10/18/1992	31.06
1993	4/27/1993	25.83	10/3/1993	30.94
1994	5/14/1994	31.62	10/6/1994	31.84
1995	4/26/1995	30.52	10/17/1995	29.53
1996	5/14/1996	30.02	10/29/1996	30.94
1997	4/29/1997	31.86	10/2/1997	31.35
1998	4/28/1998	29.23	10/2/1998	32.00
1999	4/25/1999	27.89	10/7/1999	30.58
2000	4/27/2000	29.37	10/9/2000	30.59
2001	4/29/2001	28.14	10/7/2001	28.98
2002	5/22/2002	30.37	10/14/2002	29.76
2003	4/27/2003	29.27	10/2/2003	29.87
2004	5/4/2004	27.00	10/17/2004	31.03
2005	5/5/2005	28.96	10/27/2005	30.55
2006	5/7/2006	29.57	10/13/2006	31.79
2007	4/14/2007	29.51	10/13/2007	30.95
2008	4/30/2008	31.01	10/19/2008	27.47
2009	5/18/2009	30.50	10/1/2009	30.60

See this data for other stations:

Ashtabula | Avon | Chaska | Columbus | Deephaven | Delaware | Eagan | Eastern | Farmington | Hiawatha/Nokomis East | Inver Grove Acres | Jackson | Madison | Mahoning* | Miami* | Mt Vernon* | Muck Crops | North Central | Northwest | Perry | Piketon | Plymouth | Savage | Southern* | St Paul | Uptown Minneapolis | Western | White Bear Lake | Woodbury | Wooster |