county: LEWIS | location: CANTON L&D 20 | lat: 40.143 | long: -91.516 | elev: 490 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 5/7 9/26 191 4/29 10/4 179 4/22 10/12 170 4/16 10/17 162 4/8 10/25 149
32 4/27 10/5 212 4/17 10/16 200 4/11 10/22 192 4/6 10/28 183 3/30 11/5 171
28 4/16 10/18 234 4/8 10/28 221 4/3 11/2 213 3/28 11/8 205 3/18 11/17 193
24 4/8 11/1 256 3/31 11/7 243 3/24 11/13 233 3/17 11/20 224 3/8 12/1 212

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