county: JEFFERSON | location: FESTUS | lat: 38.231 | long: -90.398 | elev: 600 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 5/10 9/26 185 5/2 10/3 172 4/26 10/8 164 4/20 10/14 155 4/11 10/22 144
32 4/30 10/4 209 4/22 10/13 195 4/16 10/20 186 4/9 10/26 178 3/31 11/4 165
28 4/20 10/14 232 4/11 10/25 218 4/4 11/1 209 3/30 11/7 200 3/20 11/17 187
24 4/10 10/25 257 3/31 11/5 242 3/25 11/13 231 3/18 11/21 221 3/7 12/2 207

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