county: GRUNDY | location: SPICKARD 7 W | lat: 40.247 | long: -93.716 | elev: 875 ft.
Temp Probability of observing a temperature as cold, or colder, later in the spring or earlier in the fall than the indicated date.
10% 30% 50% 70% 90%
(°F) spring fall season
length*
spring fall season
length*
spring fall season
length*
spring fall season
length*
spring fall season
length*
36 5/12 9/18 176 5/3 9/26 163 4/29 10/1 155 4/23 10/8 146 4/14 10/17 135
32 5/2 9/28 199 4/24 10/6 186 4/18 10/13 177 4/12 10/20 168 4/3 10/28 155
28 4/22 10/9 219 4/13 10/20 207 4/8 10/26 199 4/3 11/1 190 3/26 11/10 178
24 4/14 10/20 241 4/5 10/31 227 3/31 11/5 218 3/25 11/11 209 3/16 11/22 196

*Season length: number of days between last spring and first fall temperature thresholds, i.e. 36, 32, 28 and 24°F.