Monthly Means and Extremes                                         Period:     1971-2000
Howard Prarie Dam, OR

Parameter                  Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec    Year
Mean Temperature(F)
   Maximum                 36.9  41.4  46.5  53.1  62.0  70.5  79.2  79.5  72.9  61.0  42.9  36.0    56.8
   Minimum                 21.2  22.5  25.0  28.9  34.3  40.4  45.3  44.6  38.7  33.0  27.4  22.6    32.0
   Mean                    29.1  32.0  35.8  41.0  48.2  55.5  62.3  62.1  55.8  47.0  35.2  29.3    44.4
Extreme Temperature(F)
   Maximum                   55    67    73    82    92    95    97   100    97    86    68    55     100
   Minimum                  -10   -20    -1     7    21    26    29    29    26     8     1   -20     -20
Precipitation(inches)
   Monthly mean            4.85  3.86  3.72  2.39  2.06  1.28   .58   .72  1.07  2.04  4.79  5.21   32.57
   Extreme 24 hr           3.93  2.23  2.57  1.12  1.57  1.26  2.14  1.48  1.08  1.87  3.31  2.58    3.93
Snowfall(inches)
   Monthly mean           25.28 23.84 19.44  9.24  2.91   .26   .00   .00   .20  1.59 19.23 25.33  133.66
Average number of days
   Temperature
      Maximum 90 or more     .0    .0    .0    .0    .1    .3   3.0   3.0    .5    .0    .0    .0     6.6
      Maximum 32 or less    7.0   2.4    .6    .1    .0    .0    .0    .0    .0    .1   2.2   8.1    21.7
      Minimum 32 or less   29.4  26.5  28.9  23.4  14.0   3.6    .3    .2   4.4  15.8  25.7  29.7   203.7
      Minimum 0 or less     1.1    .7    .0    .0    .0    .0    .0    .0    .0    .0    .0    .6     2.6
   Precipitation
      .01 inches or more   14.1  13.8  15.3  12.3   9.9   6.1   2.9   3.0   4.7   7.7  14.7  14.4   120.9
      .10 inches or more   10.1   9.5  10.3   7.9   5.9   3.9   1.4   1.7   2.7   5.3  10.8  11.0    82.4
      .50 inches or more    2.7   2.3   1.7    .9   1.0    .6    .3    .5    .6   1.2   2.9   3.5    19.0
      1.00 inches or more    .9    .6    .4    .1    .1    .1    .1    .1    .0    .3   1.0    .9     4.8
Degree Days
   Heating days @ 65 (F)   1123   934   907   728   538   304   141   145   292   569   912  1119    7770
   Growing days @ 50 (F)      0     0     0    11    67   187   365   358   195    51     0     0    1221