Monthly Means and Extremes
Grizzly, Oregon
1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature(F)
Maximum 40.4 45.0 49.5 55.6 63.6 73.3 81.9 81.8 72.8 62.6 47.4 40.8 59.8
Minimum 21.7 24.5 25.4 27.4 32.2 39.2 42.1 42.4 36.7 31.4 27.3 22.0 31.4
Mean 31.0 34.7 37.5 41.5 47.7 56.3 62.0 62.1 54.8 47.0 37.4 31.4 45.7
Extreme Temperature(F)
Maximum 63 67 78 84 96 98 99 104 98 88 76 69 101
Minimum -25 -18 0 9 8 19 25 23 14 3 -14 -29 -18
Precipitation(inches)
Monthly mean 1.54 1.00 1.09 .97 1.23 1.02 .42 .77 .65 .88 1.79 1.36 12.31
Extreme 24 hr 1.98 .93 1.13 1.49 1.66 1.40 1.00 1.33 1.63 .80 2.75 1.70 1.77
Snowfall(inches)
Monthly mean 7.97 4.06 4.25 2.62 .55 .00 .00 .00 .00 .49 4.81 7.63 38.53
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .2 1.7 6.2 6.7 .7 .0 .0 .0 16.6
Maximum 32 or less 5.4 2.1 .2 .0 .0 .0 .0 .0 .0 .0 1.4 5.2 13.7
Minimum 32 or less 24.9 23.2 25.5 22.2 15.5 5.2 2.0 1.3 7.8 16.3 20.4 25.4 185.4
Minimum 0 or less 2.0 .6 .0 .0 .0 .0 .0 .0 .0 .0 .4 1.4 3.9
Precipitation
.01 inches or more 8.0 6.8 8.1 6.4 6.0 5.0 2.4 3.4 3.3 5.5 9.3 7.8 72.3
.10 inches or more 4.8 3.6 4.3 3.5 4.0 3.1 1.3 2.2 2.1 3.4 5.0 4.2 40.1
.50 inches or more .7 .3 .1 .4 .6 .3 .2 .5 .3 .3 .9 .6 4.8
1.00 inches or more .0 .0 .0 .0 .1 .1 .0 .1 .1 .0 .2 .1 .8
Degree Days
Heating days @ 65 1054.1 853.9 853.5 704.9 536.9 276.0 135.7 135.1 311.8 559.5 828.2 1040.4 7176.5
Growing days @ 50 .2 .3 2.0 13.5 65.7 211.7 376.2 375.5 177.7 51.0 2.2 .5 1356.1