ANNUAL CLIMATOLOGICAL SUMMARY

NAME: SK  CITY: Chesterfield   STATE: MO  63017  
ELEV:   530 ft  LAT:  38° 24' 34" N  LONG:  90° 17' 55" W

               TEMPERATURE (°F), HEAT BASE 65.0, COOL BASE 65.0
                          DEP.  HEAT  COOL                                          
        MEAN  MEAN        FROM  DEG   DEG                        MAX  MAX  MIN  MIN 
 YR MO  MAX   MIN   MEAN  NORM  DAYS  DAYS  HI  DATE  LOW  DATE  >=90 <=32 <=32 <=0 
------------------------------------------------------------------------------------
 10  1  34.3  19.9  26.6  -0.4  1175     0  55.5  14  -2.4   10    0   13   22    1
 10  2  37.6  23.1  30.0  -3.0   978     0  54.9  20  10.4    9    0    6   25    0
 10  3  59.1  38.5  48.3   5.3   532    16  88.0  31  22.6    4    0    0    7    0
 10  4  76.0  51.0  63.8   8.8   161   125  89.8   1  35.7    9    0    0    0    0
 10  5  78.1  57.3  67.6   2.6   107   188  94.4  24  37.7    9    5    0    0    0
 10  6  91.3  70.3  80.4   6.4     1   461  98.0  23  60.8   30   19    0    0    0
 10  7  93.5  72.5  82.4   4.4     2   540  99.6  24  58.7    1   26    0    0    0
 10  8  93.4  70.6  81.5   5.5     5   515 104.4   3  58.2   27   24    0    0    0
 10  9  78.0  65.2  70.7   2.7     3    29  89.9   2  55.6    4    0    0    0    0
 10 10
 10 11
 10 12
------------------------------------------------------------------------------------
        70.8  50.9  60.5   3.6  2963  1875 104.4 AUG  -2.4  JAN   74   19   54    1

                                PRECIPITATION (in)

               DEP.   MAX        DAYS OF RAIN 
               FROM   OBS.          OVER
 YR MO  TOTAL  NORM   DAY  DATE .01   .1   1
---------------------------------------------
 10  1  1.31  -0.53  0.59   23    5    4    0
 10  2  2.05  -0.11  0.89   21   10    4    0
 10  3  2.93  -0.29  0.84   25   10    7    0
 10  4  3.53  -0.03  1.11   24   11    8    1
 10  5  4.88   0.50  1.22   12   15   10    1
 10  6  3.15  -0.68  0.81    2   11    9    0
 10  7  5.41   1.84  1.63    8   14    8    2
 10  8  3.32   0.08  1.01   14    5    5    1
 10  9  0.37  -2.66  0.29    2    2    1    0
 10 10
 10 11
 10 12
---------------------------------------------
       26.95 -1.88  1.63  JUL   83   56    5

                                WIND SPEED (mph)
                          DOM
 YR MO   AVG.  HI   DATE  DIR
---------------------------------
 10  1   2.6  25.0    7    NW
 10  2   2.6  23.0    9    NW
 10  3   2.6  25.0   25    NW
 10  4   2.9  28.0    4     S
 10  5   1.8  24.0    7    NW
 10  6   1.5  30.0   19   SSE
 10  7   1.3  28.0   18   SSE
 10  8   1.2  24.0   20   SSE
 10  9   2.0  19.0    3    NW
 10 10
 10 11
 10 12
---------------------------------
         2.1  30.0  JUN   NW