Length of 'Freeze Free' Season Probabilities


RICHLAND s, a (457015)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 135 143 150 155 159 165 167 173 177 188 206
32.5 147 165 175 183 188 191 197 199 205 215 225
28.5 171 198 204 209 217 227 230 236 246 250 293
24.5 210 231 240 245 252 256 263 273 283 300 ***
20.5 236 249 265 273 280 286 300 310 319 *** ***
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