Monthly Means and Extremes
                                                 Drain, Oregon           Period:     1961-1990

Parameter                 Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec   Year
Mean Temperature (F)
   Maximum                 47.9  53.3  57.6  62.5  69.2  76.0  83.0  83.2  78.0  66.9  54.0  47.5   65.0
   Minimum                 33.7  35.5  36.7  38.8  42.8  48.0  49.9  50.1  46.0  42.3  39.1  34.9   41.4
   Mean                    40.8  44.4  47.2  50.6  56.0  62.0  66.5  66.7  62.0  54.6  46.5  41.2   53.2
Extreme Temperature (F)
   Maximum                   67    74    82    91    99   102   105   107   106    96    75    70    107
   Minimum                    0     4    21    24    29    32    36    37    26    22    16     1      0
Precipitation (inches)
   Monthly mean            7.04  5.50  5.27  3.34  2.14  1.14   .45   .87  1.42  3.47  7.65  7.82  45.70
   Extreme 24 hour         3.25  3.65  2.50  1.40  1.46   .99  1.18  2.10  1.84  1.51  4.44  4.92   4.92
Snowfall (inches)
   Monthly mean             .64  1.23   .03   .00   .00   .00   .00   .00   .00   .00   .20   .78   3.72
Average number of days
   Temperature
      Maximum 90 or more     .0    .0    .0    .1   1.1   2.6   7.4   7.3   3.3    .3    .0    .0   22.4
      Maximum 32 or less     .4    .1    .0    .0    .0    .0    .0    .0    .0    .0    .1    .6    1.2
      Minimum 32 or less   12.7   8.7   7.6   3.7    .8    .0    .0    .0    .6   1.9   4.0   9.3   50.0
      Minimum 0 or less      .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0     .0
   Precipitation
      .01 inches or more   17.8  16.0  18.6  15.0  10.2   6.6   2.5   3.7   5.9  11.2  18.3  18.4  143.0
      .10 inches or more   12.3  11.7  12.4   9.2   6.3   3.4   1.2   2.4   3.4   7.2  13.6  13.4   96.1
      .50 inches or more    4.8   4.0   3.6   1.8   1.0    .6    .2    .3   1.0   2.5   5.3   5.5   30.3
      1.00 inches or more   1.9   1.0    .8    .3    .1    .0    .1    .1    .1    .5   2.2   2.0    9.1
Degree Days
   Heating days @ 65F       750   582   552   431   289   127    43    38   119   325   555   738   4550
   Growing days @ 50F         5    12    30    81   199   360   510   516   360   161    27     7   2266

                                                                         Oregon Climate Service