county: ST. LOUIS | location: ST LOUIS LAMBERT INTL AP | lat: 38.752 | long: -90.374 | elev: 531 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 4/26 10/9 213 4/19 10/18 201 4/12 10/24 193 4/7 10/29 184 3/30 11/6 173
32 4/18 10/19 234 4/9 10/28 221 4/3 11/3 213 3/29 11/9 205 3/20 11/18 192
28 4/8 10/31 256 3/31 11/7 244 3/24 11/13 234 3/18 11/21 225 3/9 12/1 212
24 3/31 11/7 279 3/20 11/18 265 3/14 11/26 256 3/7 12/2 246 2/27 12/12 232

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