Length of 'Freeze Free' Season Probabilities


MT SHASTA, CALIFORNIA (045983)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 50 74 82 87 93 96 104 110 115 123 143
32.5 93 104 110 122 127 131 135 141 146 155 162
28.5 124 145 154 158 168 174 179 183 189 198 208
24.5 168 183 195 200 204 210 215 219 225 239 264
20.5 195 218 231 237 245 250 260 265 289 302 ***
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