Monthly Means and Extremes
Malheur Refuge, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 37.4 44.4 49.8 58.4 67.4 75.1 84.8 83.2 74.5 63.1 47.3 37.5 60.9
Minimum 17.6 22.9 25.5 29.9 37.5 44.8 49.2 47.4 38.5 29.9 24.6 17.2 32.4
Mean 27.5 33.8 37.6 44.2 52.5 60.1 66.9 65.3 56.5 46.5 35.9 27.4 46.7
Extreme Temperature (F)
Maximum 60 65 76 86 93 100 102 104 95 88 73 63 104
Minimum -33 -16 0 7 19 19 29 27 16 3 -9 -30 -33
Precipitation (inches)
Monthly mean .89 .57 1.00 .71 1.06 .91 .40 .74 .51 .79 1.18 1.04 10.21
Extreme 24 hour 1.53 .50 1.19 .86 1.23 .86 1.22 1.55 1.05 1.12 1.00 1.14 1.55
Snowfall (inches)
Monthly mean 6.35 3.03 3.01 1.59 .36 .00 .00 .02 .03 .19 2.78 8.21 30.55
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .1 1.9 7.9 7.2 1.2 .0 .0 .0 23.1
Maximum 32 or less 8.6 1.7 .5 .0 .0 .0 .0 .0 .0 .1 1.2 8.1 16.7
Minimum 32 or less 27.6 24.1 25.6 19.6 7.5 1.0 .2 .6 7.0 18.4 23.1 27.6 183.6
Minimum 0 or less 2.4 .6 .0 .0 .0 .0 .0 .0 .0 .0 .5 3.3 4.8
Precipitation
.01 inches or more 7.8 6.2 8.3 6.6 7.0 6.1 2.5 3.9 3.5 5.8 8.3 9.1 80.3
.10 inches or more 2.5 2.2 3.0 2.2 3.8 2.8 1.3 1.9 1.6 2.5 3.8 3.4 32.9
.50 inches or more .3 .0 .4 .2 .2 .4 .1 .4 .3 .3 .4 .1 3.2
1.00 inches or more .0 .0 .1 .0 .1 .0 .0 .1 .1 .1 .0 .0 .5
Degree Days
Heating days @ 65F 1163 879 848 625 392 182 47 71 266 575 873 1167 6928
Growing days @ 50F 0 0 2 33 137 310 523 475 225 48 2 0 1813
Oregon Climate Service