county: JEFFERSON | location: FESTUS | lat: 38.231 | long: -90.398 | elev: 600 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 5/10 9/26 5/2 10/3 4/26 10/8 4/20 10/14 4/11 10/22
32 4/30 10/4 4/22 10/13 4/16 10/20 4/9 10/26 3/31 11/4
28 4/20 10/14 4/11 10/25 4/4 11/1 3/30 11/7 3/20 11/17
24 4/10 10/25 3/31 11/5 3/25 11/13 3/18 11/21 3/7 12/2

* 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%
36 185 172 164 155 144
32 209 195 186 178 165
28 232 218 209 200 187
24 257 242 231 221 207