Monthly Means and Extremes                                         Period:     1971-2000
Hart Mountain Refuge, OR

Parameter                  Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec    Year
Mean Temperature(F)
   Maximum                 39.8  42.0  46.4  53.9  62.4  71.9  81.3  80.6  72.3  60.8  46.0  40.0    58.1
   Minimum                 18.2  20.2  22.7  26.1  31.8  37.5  42.7  42.6  36.2  29.5  22.5  17.3    28.9
   Mean                    29.0  31.1  34.6  40.0  47.1  54.7  62.0  61.6  54.3  45.2  34.3  28.7    43.6
Extreme Temperature(F)
   Maximum                   63    67    70    81    88    93    97    98    93    89    72    63      96
   Minimum                  -17   -26    -8    -4    12    18    23    23    17     4   -17   -32     -32
Precipitation(inches)
   Monthly mean             .92   .91  1.42  1.54  1.69  1.17   .46   .50   .79  1.06  1.20  1.06   12.72
   Extreme 24 hr           1.20   .60  1.01  2.80  1.95  2.21   .93  1.27   .85  2.00  1.56  1.22    2.80
Snowfall(inches)
   Monthly mean            6.60  8.12  9.09  3.92  2.26   .51   .00   .00   .59  1.99  5.48  6.85   53.47
Average number of days
   Temperature
      Maximum 90 or more     .0    .0    .0    .0    .0    .3   3.6   2.9    .2    .0    .0    .0     8.2
      Maximum 32 or less    5.6   3.9   1.4    .3    .0    .0    .0    .0    .0    .3   2.7   5.6    21.3
      Minimum 32 or less   27.8  25.4  26.9  22.3  15.7   6.4   1.8   2.2   8.3  17.3  23.8  27.9   206.7
      Minimum 0 or less     1.6   1.4    .3    .0    .0    .0    .0    .0    .0    .0    .4   1.8     6.2
   Precipitation
      .01 inches or more    7.8   7.3   9.5   8.9   8.1   6.2   3.3   3.2   4.1   5.8   8.3   7.4    82.8
      .10 inches or more    3.3   3.2   4.3   4.9   4.8   3.5   1.3   1.4   2.1   3.1   4.0   3.3    39.8
      .50 inches or more     .3    .2    .6    .5    .6    .4    .1    .2    .5    .3    .3    .3     4.0
      1.00 inches or more    .0    .0    .0    .1    .1    .1    .0    .0    .0    .0    .0    .0      .7
Degree Days
   Heating days @ 65 (F)   1098   941   930   737   536   303   126   135   322   598   915  1116    7751
   Growing days @ 50 (F)      0     0     1    13    67   186   382   373   180    47     2     0    1247