county: LEWIS | location: STEFFENVILLE | lat: 39.971 | long: -91.887 | elev: 690 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 5/9 9/21 186 5/1 10/1 173 4/25 10/7 164 4/19 10/14 155 4/10 10/23 142
32 4/30 10/1 208 4/20 10/12 196 4/14 10/19 186 4/8 10/26 177 3/31 11/3 164
28 4/20 10/14 230 4/10 10/25 217 4/4 11/1 208 3/30 11/5 200 3/20 11/14 186
24 4/10 10/27 252 4/1 11/4 238 3/26 11/10 229 3/19 11/17 219 3/9 11/27 206

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