Length of 'Freeze Free' Season Probabilities


LAKE ARROWHEAD, at (044671)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 91 104 115 121 126 131 136 138 141 155 166
32.5 122 141 148 157 159 164 167 172 177 187 233
28.5 150 174 185 193 199 204 209 217 225 241 287
24.5 194 218 223 226 236 243 255 263 285 296 ***
20.5 228 255 259 275 296 318 *** *** *** *** ***
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