Monthly Means and Extremes
Port Orford, Oregon Period: 1961-1990
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature (F)
Maximum 53.6 55.1 56.1 58.2 61.7 65.3 68.3 69.1 68.5 63.7 57.3 53.8 61.1
Minimum 39.5 40.2 40.9 41.7 45.1 49.3 51.6 51.7 50.2 46.6 42.9 39.8 45.3
Mean 46.6 47.5 48.5 49.9 53.4 57.3 60.0 60.4 59.4 55.3 50.1 46.8 53.3
Extreme Temperature (F)
Maximum 76 75 77 81 91 88 81 83 93 89 76 80 93
Minimum 21 19 27 28 31 28 39 35 36 28 24 13 13
Precipitation (inches)
Monthly mean 11.72 8.44 9.02 5.00 3.27 1.95 .61 1.44 1.96 4.90 11.15 12.36 72.65
Extreme 24 hour 4.51 3.42 5.80 3.00 1.83 2.93 1.69 3.50 2.06 3.26 3.94 7.53 7.53
Snowfall (inches)
Monthly mean .00 .09 .00 .00 .00 .00 .00 .00 .00 .00 .06 .22 .39
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .0 .0 .0 .0 .0 .1 .0 .0 .0 .2
Maximum 32 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .1 .1
Minimum 32 or less 5.1 2.9 1.7 .5 .3 .0 .0 .0 .0 .2 1.6 4.7 17.5
Minimum 0 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
Precipitation
.01 inches or more 17.7 15.2 16.6 12.0 8.9 6.2 2.8 3.9 5.3 9.9 17.7 17.8 135.1
.10 inches or more 15.0 12.3 13.8 9.4 6.6 4.4 1.4 2.2 3.6 7.5 14.7 15.1 106.3
.50 inches or more 8.8 6.2 6.6 3.7 2.4 1.4 .4 .9 1.4 3.5 8.6 8.3 52.5
1.00 inches or more 4.0 2.6 2.6 1.1 1.0 .3 .1 .4 .5 1.5 3.6 3.9 22.0
Degree Days
Heating days @ 65F 571 494 513 453 362 232 157 145 174 303 446 564 4277
Growing days @ 50F 21 23 29 44 115 220 308 322 282 171 56 25 1694
Oregon Climate Service, Oregon State University, http://www.ocs.orst.edu