Monthly Means and Extremes Period: 1971-2000
Squaw Butte Experiment Station, OR
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature(F)
Maximum 34.6 39.1 45.7 54.0 62.9 72.6 81.8 81.7 72.0 59.9 42.7 35.5 56.9
Minimum 19.4 22.8 27.1 30.7 37.2 44.1 50.9 50.8 43.9 35.5 26.3 20.2 34.1
Mean 27.0 31.0 36.4 42.4 50.1 58.4 66.4 66.3 58.0 47.7 34.5 27.9 45.5
Extreme Temperature(F)
Maximum 55 66 71 86 92 96 99 100 97 87 72 59 98
Minimum -10 -16 5 11 18 24 30 24 19 4 -5 -20 -20
Precipitation(inches)
Monthly mean 1.41 1.02 1.30 1.03 1.31 .80 .45 .58 .63 .79 1.25 1.23 11.80
Extreme 24 hr 3.50 1.00 .75 1.27 1.25 1.36 1.04 2.02 1.07 2.00 .85 1.05 1.36
Snowfall(inches)
Monthly mean 12.58 8.33 4.65 1.56 .50 .07 .00 .00 .00 .83 5.32 12.10 42.03
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .1 1.4 7.3 7.3 1.0 .0 .0 .0 16.7
Maximum 32 or less 10.0 4.5 1.0 .0 .0 .0 .0 .0 .0 .2 2.7 8.4 23.5
Minimum 32 or less 29.1 24.9 25.0 18.2 9.5 2.5 .5 .1 2.8 10.8 23.1 28.5 172.7
Minimum 0 or less 1.2 .6 .0 .0 .0 .0 .0 .0 .0 .0 .1 .9 3.8
Precipitation
.01 inches or more 9.8 8.5 10.0 7.9 8.3 5.6 3.2 4.0 4.2 5.1 9.3 8.0 81.6
.10 inches or more 4.9 3.9 4.2 3.5 4.4 2.7 1.4 1.6 1.8 2.4 4.2 3.9 37.8
.50 inches or more .4 .1 .4 .3 .6 .2 .1 .2 .3 .2 .3 .5 3.7
1.00 inches or more .1 .0 .0 .0 .1 .0 .0 .0 .0 .1 .0 .0 .3
Degree Days
Heating days @ 65 (F) 1186 945 869 651 457 225 77 74 224 513 879 1144 7120
Growing days @ 50 (F) 0 0 2 33 116 279 512 513 291 92 3 0 1897