county: LINN | location: BROOKFIELD | lat: 39.765 | long: -93.059 | elev: 767 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 5/11 9/20 179 5/2 9/29 168 4/28 10/6 160 4/22 10/12 151 4/14 10/21 138
32 5/1 9/30 200 4/24 10/10 189 4/18 10/17 180 4/12 10/23 171 4/4 10/31 158
28 4/22 10/12 221 4/14 10/22 209 4/8 10/28 201 4/3 11/2 193 3/25 11/10 180
24 4/14 10/23 242 4/6 11/1 229 4/1 11/6 220 3/25 11/13 211 3/15 11/22 199

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