county: GRUNDY | location: SPICKARD 7 W | lat: 40.247 | long: -93.716 | elev: 875 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 5/12 9/18 5/3 9/26 4/29 10/1 4/23 10/8 4/14 10/17
32 5/2 9/28 4/24 10/6 4/18 10/13 4/12 10/20 4/3 10/28
28 4/22 10/9 4/13 10/20 4/8 10/26 4/3 11/1 3/26 11/10
24 4/14 10/20 4/5 10/31 3/31 11/5 3/25 11/11 3/16 11/22

* 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%
36 176 163 155 146 135
32 199 186 177 168 155
28 219 207 199 190 178
24 241 227 218 209 196