Monthly Means and Extremes
Ruch, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 48.6 54.9 59.4 65.3 74.1 81.8 89.3 88.8 82.3 70.4 54.3 47.0 68.1
Minimum 29.7 30.8 33.1 35.4 40.6 46.8 49.9 49.7 44.5 38.6 34.1 30.3 38.7
Mean 39.1 42.8 46.2 50.3 57.3 64.3 69.6 69.4 63.4 54.5 44.2 38.7 53.4
Extreme Temperature (F)
Maximum 69 75 80 91 99 103 108 111 106 102 75 71 111
Minimum 8 2 20 20 25 30 34 36 27 19 13 -3 -3
Precipitation (inches)
Monthly mean 4.27 2.79 2.89 1.59 1.04 .77 .37 .58 1.05 1.73 4.19 4.73 26.01
Extreme 24 hour 3.37 1.46 2.85 1.12 1.33 1.13 1.67 .88 2.77 1.48 2.80 2.74 3.37
Snowfall (inches)
Monthly mean 4.70 4.14 2.45 .23 .04 .00 .00 .00 .00 .00 .94 5.77 18.76
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .1 2.3 7.6 16.3 15.4 7.6 1.0 .0 .0 51.0
Maximum 32 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .3 .4
Minimum 32 or less 20.9 17.9 15.2 10.4 3.3 .2 .0 .0 .7 5.5 11.9 19.3 103.8
Minimum 0 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .1 .1
Precipitation
.01 inches or more 13.8 11.5 13.3 10.0 6.6 4.8 1.8 2.9 4.6 7.2 13.8 14.6 105.2
.10 inches or more 8.1 6.6 7.7 5.3 3.5 2.8 .9 2.2 2.6 4.7 9.0 9.5 63.2
.50 inches or more 3.0 1.8 1.7 .4 .4 .2 .1 .2 .7 .9 2.7 3.3 15.5
1.00 inches or more .9 .4 .4 .0 .0 .0 .0 .0 .1 .2 .9 1.1 4.0
Degree Days
Heating days @ 65F 802 627 582 441 254 92 20 19 100 330 624 816 4688
Growing days @ 50F 3 7 26 86 240 430 607 600 402 166 14 3 2597
Oregon Climate Service