Monthly Means and Extremes
Suntex, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 34.7 41.4 48.5 57.4 65.8 74.7 83.7 83.0 74.7 62.9 45.3 35.9 58.9
Minimum 14.0 19.8 24.5 28.8 34.4 41.1 45.2 43.9 36.1 28.7 23.3 16.0 29.8
Mean 24.4 30.6 36.5 43.1 50.1 57.9 64.4 63.4 55.4 45.8 34.3 26.0 44.3
Extreme Temperature (F)
Maximum 58 62 73 83 92 95 97 105 95 88 69 60 105
Minimum -30 -32 -3 3 12 22 26 23 12 5 -16 -31 -32
Precipitation (inches)
Monthly mean .81 .61 .82 .62 .94 .74 .45 .64 .60 .73 1.31 1.12 9.42
Extreme 24 hour .84 1.20 .85 1.12 1.05 .92 1.35 1.00 1.11 1.16 .95 1.15 1.35
Snowfall (inches)
Monthly mean 10.25 5.20 5.01 1.72 .75 .07 .00 .00 .00 .95 7.13 12.41 44.38
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .1 1.5 6.8 7.0 1.2 .0 .0 .0 16.3
Maximum 32 or less 10.6 3.0 .7 .0 .0 .0 .0 .0 .0 .0 2.4 9.7 28.5
Minimum 32 or less 28.6 25.5 26.2 19.5 12.8 4.0 1.2 1.6 9.7 21.9 24.4 28.6 202.1
Minimum 0 or less 5.1 1.8 .2 .0 .0 .0 .0 .0 .0 .0 .4 3.1 11.2
Precipitation
.01 inches or more 6.2 5.9 7.1 5.3 5.7 5.5 2.7 3.1 3.3 4.8 8.0 8.4 65.7
.10 inches or more 2.7 2.1 2.7 1.9 3.0 2.6 1.2 2.1 1.8 2.4 4.6 4.4 32.2
.50 inches or more .3 .1 .1 .1 .3 .2 .2 .3 .4 .3 .4 .2 2.7
1.00 inches or more .0 .0 .0 .1 .0 .0 .0 .0 .0 .0 .0 .0 .3
Degree Days
Heating days @ 65F 1260 972 884 656 463 229 81 103 294 595 922 1210 7669
Growing days @ 50F 0 0 1 24 99 252 448 418 200 36 1 0 1508
Oregon Climate Service