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

Parameter                 Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec   Year
Mean Temperature (F)
   Maximum                 54.7  56.3  57.2  59.6  63.2  66.4  67.7  67.5  68.6  64.4  58.4  54.7   61.6
   Minimum                 40.9  42.0  41.8  42.5  46.0  49.5  51.2  52.0  51.2  47.9  44.6  41.2   45.9
   Mean                    47.8  49.1  49.5  51.0  54.6  57.9  59.4  59.8  59.9  56.2  51.5  47.9   53.7
Extreme Temperature (F)
   Maximum                   73    83    80    85    94   101   102   101   103    94    81    79    103
   Minimum                   21    24    30    31    32    39    39    42    39    34    29    18     18
Precipitation (inches)
   Monthly mean           10.85  9.03  9.49  5.30  3.64  1.55   .53  1.31  2.15  5.84 11.89 12.23  74.78
   Extreme 24 hour         4.00  4.20  5.00  3.05  5.97  2.92  1.40  3.61  2.97  5.45  4.58  4.55   5.97
Snowfall (inches)
   Monthly mean             .21   .30   .07   .00   .00   .00   .00   .00   .00   .00   .00   .07    .35
Average number of days
   Temperature
      Maximum 90 or more     .0    .0    .0    .0    .1    .3    .1    .2    .8    .1    .0    .0    1.8
      Maximum 32 or less     .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0     .0
      Minimum 32 or less    2.5   1.1    .5    .2    .0    .0    .0    .0    .0    .0    .3   2.0    5.6
      Minimum 0 or less      .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0    .0     .0
   Precipitation
      .01 inches or more   16.6  15.7  18.1  12.7   8.7   5.8   3.9   5.3   5.8  10.8  17.5  17.8  140.6
      .10 inches or more   13.6  12.7  14.5   9.4   5.6   3.0   1.2   1.9   3.4   7.6  14.6  15.1  103.0
      .50 inches or more    7.6   7.0   7.3   3.8   2.4   1.1    .4    .8   1.5   4.4   8.5   9.1   54.6
      1.00 inches or more   3.8   2.6   2.6   1.0    .9    .3    .1    .3    .6   1.9   4.1   4.1   22.7
Degree Days
   Heating days @ 65F       533   448   482   420   326   220   180   170   172   278   405   530   4156
   Growing days @ 50F        30    39    43    66   148   237   292   303   296   194    78    28   1746

                                                                         Oregon Climate Service