county: PERRY | location: PERRYVILLE WATR PLT | lat: 37.734 | long: -89.920 | elev: 502 ft.
Temp Freeze Dates (month/day)
Probability of later date in spring (through Jul 31) or earlier date in fall (beginning Aug 1) than indicated.*
10% 30% 50% 70% 90%
(°F) spring fall spring fall spring fall spring fall spring fall
36 5/16 9/21 5/6 9/30 4/30 10/4 4/24 10/10 4/15 10/19
32 5/5 9/30 4/27 10/7 4/20 10/14 4/14 10/21 4/3 10/30
28 4/24 10/7 4/14 10/19 4/7 10/26 3/31 11/1 3/23 11/11
24 4/12 10/15 4/2 10/28 3/26 11/5 3/20 11/14 3/11 11/28

* Probability of observing a temperature as cold or colder than the indicated threshold.

Temp (°F) Freeze Free Period
Probability of longer than indicated freeze free period (Days).
10% 30% 50% 70% 90%
36 178 165 156 147 134
32 200 187 177 167 153
28 224 210 200 191 176
24 249 234 223 212 197