Monthly Means and Extremes
Ochoco Ranger Station, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 35.3 41.1 47.9 55.8 63.7 72.7 81.2 81.7 73.4 61.4 43.3 35.6 58.0
Minimum 15.3 18.9 23.0 26.3 31.5 37.6 40.1 40.0 33.8 28.4 23.9 17.7 28.2
Mean 25.2 30.1 35.4 41.1 47.6 55.1 60.6 60.8 53.6 44.9 33.6 26.6 43.2
Extreme Temperature (F)
Maximum 57 64 72 85 95 94 100 101 99 89 68 55 101
Minimum -22 -26 -4 9 15 21 18 27 17 1 -10 -24 -26
Precipitation (inches)
Monthly mean 2.13 1.55 1.37 1.13 1.24 1.29 .70 .88 .94 1.25 2.49 2.38 17.18
Extreme 24 hour 1.82 1.44 1.66 1.22 .90 1.30 2.70 1.25 1.30 1.04 1.40 2.42 2.70
Snowfall (inches)
Monthly mean 11.06 6.93 5.16 3.04 .58 .00 .00 .00 .00 .82 6.68 11.58 46.30
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .3 1.1 5.5 6.2 1.4 .0 .0 .0 15.5
Maximum 32 or less 10.0 3.9 1.0 .1 .0 .0 .0 .0 .0 .0 2.7 9.6 27.5
Minimum 32 or less 29.8 27.4 28.6 25.7 18.2 7.0 3.0 2.8 12.9 23.5 26.4 29.5 232.1
Minimum 0 or less 3.2 1.4 .2 .0 .0 .0 .0 .0 .0 .0 .3 1.6 6.2
Precipitation
.01 inches or more 8.6 7.5 6.4 6.0 5.8 6.1 2.9 4.5 4.4 5.9 9.0 8.8 75.1
.10 inches or more 6.2 5.1 4.6 3.7 3.6 3.6 1.6 2.9 2.8 3.9 6.9 6.6 50.6
.50 inches or more 1.0 .6 .5 .5 .7 .5 .4 .4 .5 .6 1.7 1.2 8.3
1.00 inches or more .3 .1 .1 .1 .0 .1 .1 .0 .1 .0 .3 .3 1.5
Degree Days
Heating days @ 65F 1233 988 917 718 540 304 162 161 347 623 941 1189 8011
Growing days @ 50F 0 0 0 15 65 184 335 339 155 32 0 0 1177
Oregon Climate Service