Length of 'Freeze Free' Season Probabilities
ICE HARBOR DAM, at (453883)
| Temp F |
Shortest |
90% |
80% |
70% |
60% |
50% |
40% |
30% |
20% |
10% |
Longest |
| 36.5
| 132
| 140
| 147
| 149
| 160
| 162
| 167
| 171
| 175
| 185
| 206
|
| 32.5
| 149
| 169
| 180
| 184
| 190
| 196
| 199
| 204
| 208
| 216
| 249
|
| 28.5
| 171
| 196
| 206
| 213
| 220
| 225
| 233
| 238
| 248
| 259
| 297
|
| 24.5
| 200
| 224
| 238
| 242
| 249
| 266
| 277
| 295
| 307
| 326
| ***
|
| 20.5
| 244
| 253
| 265
| 273
| 289
| 302
| 317
| 333
| ***
| ***
| ***
|
Graphic Output
Shortest - Least number of consecutive days recorded with minimum temperature
above threshold.
*** means minimum temperature below threshold has not occurred.
xx% - Percent probability that a consecutive number of days will occur with
the minimum temperature not below the threshold.
*** means non-occurrence of the threshold
Longest - Greatest number of consecutive days recorded with minimum temperature
above threshold.
*** means that at least one year occurred when minimum temperature
below threshold was not recorded.
Note: All periods include August 1.
Western Regional Climate Center, wrcc@dri.edu