MEDIAN FROST DATES AND OTHER CRITICAL LOW TEMPERATURE THRESHOLDS.
(calculated for 45 years, 1948-1992)

             MEDIAN DATE OF      MEDIAN DATE OF     DAYS BETWEEN
             LAST MIN. TEMP      FIRST MIN. TEMP    MEDIAN DATES
STATION      IN SPRING           IN FALL
             24 F  28  F  32 F   32 F  28 F  24 F   32 F  28 F  24 F
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Chaska       4/12  4/22   5/2    10/2  10/10 10/26  152   173   196
Farmington   4/11  4/21   5/3    10/3  10/12 10/29  155   178   201
Forest Lake  4/11  4/23   5/3    10/7  10/18 10/28  158   178   195
Jordan       4/13  4/28   5/10   9/27  10/7  10/20  143   164   190
MSP-Airport  4/9   4/17   4/29   10/6  10/19 11/1   160   185   207
Rosemount    4/13  4/29   5/9    9/28  10/10 10/24  144   161   194
Stillwater   4/10  4/16   5/2    10/7  10/16 11/2   160   184   207
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All sites with at least 67 percent available data for the period 
1948-1992 (45 years).  

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