Average Number of Freeze Days (1971-2000): 
(The 30-year normals for the period 1971-2000
are calculated by the National Climatic Data Center.)
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First and Last Occurrences (1898-2009*):
- Average date of first freeze: November 22
- Average date of last freeze: March 13
- Earliest freeze: Oct 22, 1898 (31°F)
- Latest freeze: Apr 13, 1997 (32°F)
Apr 13, 1957 (30°F)
- Latest first freeze: Jan 4, 1972 (21°F)
- Earliest last freeze: Feb 5, 2000 (30°F)
* data through the winter of 2008-2009
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Most and Fewest:
- Most in a season: 62 (1977-78)
- Most in a calendar year: 64 (1978)
- Fewest in a season: 14 (1999-2000, 1931-32, 1930-31)
- Fewest in a calendar year: 9 (1931)
- Most in a month: 27 (Jan 1978, Jan 1940)
- Most by month...
- October - 3 (1925)
- November - 12 (1959)
- December - 21 (1989, 1963)
- January - 27 (1978, 1940)
- February - 21 (1978, 1905)
- March - 10 (1965)
- April - 2 (1957, 1920)
- Greatest number of months in a season with at least one freeze: 7
1898-99 - October, November, December, January, February, March, April
- Only month to record both 32°F and 100°F: Mar 1916 (25°F on the 3rd and 100°F on the 21st)
- Most consecutive hours below freezing: 295 (7 am Dec 18 - 2 pm Dec 30, 1983)
- Most consecutive hours at or below freezing: 295 (7 am Dec 18 - 2 pm Dec 30, 1983)
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| Most Consecutive Hours Below Freezing |
| 295 hrs |
7 am Dec 18 - 2 pm Dec 30, 1983 |
| 178 hrs |
1 am Jan 23 - 11 am Jan 30, 1948 |
| 170 hrs |
9 am Feb 1 - 11 am Feb 8, 1905 |
| 158 hrs |
12 am Jan 27 - 2 pm Feb 2, 1951 |
| 139 hrs |
5 pm Jan 3 - 12 pm Jan 9 1942 |
| 137 hrs |
5 pm Jan 30 - 10 am Feb 5, 1996 |
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| Most Consecutive Hours at or Below Freezing |
| 295 hrs |
7 am Dec 18 - 2 pm Dec 30, 1983 |
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211 hrs
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3 pm Jan 15 - 10 am Jan 23, 1930
|
| 178 hrs |
1 am Jan 23 - 11 am Jan 30, 1948 |
| 170 hrs |
9 am Feb 1 - 11 am Feb 8, 1905 |
| 163 hrs |
5 pm Jan 16 - 12 pm Jan 23, 1978 |
| 158 hrs |
12 am Jan 27 - 2 pm Feb 2, 1951 |
| 139 hrs* |
5 pm Jan 3 - 12 pm Jan 9 1942 |
| 136 hrs |
6 pm Jan 30 - 10 am Feb 5, 1996 |
| * An additional 58 hours occurred from 6 am Jan 1 to 3 pm Jan 3, 1942. The temperature climbed to 33 degrees at 4 pm on Jan 3. Combined with the 139 hours above, this makes a total of 197 inconsecutive hours. |
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