Monthly Means and Extremes Period: 1971-2000
Grants Pass, OR
Parameter Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean Temperature(F)
Maximum 47.4 54.1 59.8 65.6 73.1 80.8 88.8 89.0 82.7 70.4 53.3 45.7 67.6
Minimum 31.1 32.7 34.1 35.8 40.5 45.4 49.5 48.9 43.0 37.4 34.6 31.3 38.7
Mean 39.3 43.4 47.0 50.7 56.8 63.1 69.2 69.0 62.9 53.9 44.0 38.5 53.2
Extreme Temperature(F)
Maximum 69 76 81 93 102 106 109 110 108 98 77 67 110
Minimum 13 12 22 24 26 33 39 36 29 20 12 -1 -1
Precipitation(inches)
Monthly mean 4.96 4.36 3.66 2.02 1.21 .53 .37 .45 .87 2.07 5.12 5.40 31.02
Extreme 24 hr 3.35 2.17 2.23 1.41 1.47 .98 1.25 .75 2.86 1.68 4.82 4.00 4.82
Snowfall(inches)
Monthly mean .67 .33 .16 .00 .00 .00 .00 .00 .00 .00 .01 .94 2.27
Average number of days
Temperature
Maximum 90 or more .0 .0 .0 .2 2.4 7.0 16.3 16.3 9.0 .9 .0 .0 51.4
Maximum 32 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .7 .8
Minimum 32 or less 14.0 10.8 9.6 5.3 1.0 .0 .0 .0 .5 4.2 6.9 13.4 65.5
Minimum 0 or less .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .0 .1 .1
Precipitation
.01 inches or more 15.7 15.1 15.9 11.6 8.0 4.2 2.0 2.7 4.6 8.1 16.7 16.3 121.5
.10 inches or more 9.2 9.2 8.4 5.3 3.6 1.9 1.0 1.4 2.3 4.5 9.6 9.7 67.0
.50 inches or more 3.4 3.1 2.1 1.1 .4 .2 .1 .2 .5 1.6 3.3 3.5 19.6
1.00 inches or more 1.2 .9 .7 .2 .1 .0 .0 .0 .0 .3 .9 1.1 5.5
Degree Days
Heating days @ 65 (F) 754 575 519 376 220 80 15 14 79 307 584 780 4322
Growing days @ 50 (F) 3 15 43 120 274 451 648 639 438 182 21 4 2824