ANNUAL CLIMATOLOGICAL SUMMARY

NAME: SK  CITY: Chesterfield   STATE: MO  63017  
ELEV:   545 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 
------------------------------------------------------------------------------------
 11  1  34.3  20.1  27.0  -0.0  1174     0  47.7  28   4.0   21    0   12   30    0
 11  2  44.9  26.7  35.8   2.8   819     5  74.5  17   2.0    3    0    7   19    0
 11  3  55.2  37.2  45.8   2.8   618    25  82.3  17  24.1   27    0    0   13    0
 11  4  72.4  49.6  60.3   5.3   219    78  91.2   9  30.9    1    2    0    1    0
 11  5  76.3  55.8  65.6   0.6   156   175  94.1  30  35.6    4    3    0    0    0
 11  6  89.1  68.0  78.6   4.6     3   412  99.0   4  59.2   16   15    0    0    0
 11  7  97.0  74.6  85.3   7.3     0   630 104.8  12  66.9    9   28    0    0    0
 11  8  91.4  68.6  79.5   3.5     3   390 104.7   2  59.9   15   15    0    0    0
 11  9  76.7  55.3  65.2  -2.8   131   137 103.8   1  40.8   25    4    0    0    0
 11 10  70.8  46.8  58.0   2.0   287    72  84.1   7  32.2   29    0    0    0    0
 11 11  58.3  41.7  49.4   5.4   489    12  77.2  13  25.6   30    0    0    4    0
 11 12  47.4  31.2  39.3   7.3   795     0  61.2  29  16.6   10    0    0   20    0
------------------------------------------------------------------------------------
        67.7  47.9  57.4   3.2  4694  1937 104.8 JUL   2.0  FEB   67   19   87    0

                                PRECIPITATION (in)

               DEP.   MAX        DAYS OF RAIN 
               FROM   OBS.          OVER
 YR MO  TOTAL  NORM   DAY  DATE .01   .1   1
---------------------------------------------
 11  1  0.51  -1.33  0.09   18    8    0    0
 11  2  2.83   0.67  0.77   24   10    8    0
 11  3  5.35   2.13  1.37    4   12    9    2
 11  4  6.87   3.31  1.48   19   13   11    1
 11  5  3.33  -1.05  1.01   25   14    8    1
 11  6  8.07   4.24  1.64   17   12   11    3
 11  7  2.36  -1.21  0.96    7    5    4    0
 11  8  1.32  -1.92  0.65    5    5    5    0
 11  9  2.74  -0.29  1.46   14    6    3    1
 11 10  1.80  -1.04  0.90   18    6    4    0
 11 11  5.38   1.73  1.64    3    9    6    3
 11 12  3.49   0.81  0.67   19    9    8    0
---------------------------------------------
       44.05  6.05  1.64  JUN  109   77   11

                                WIND SPEED (mph)
                          DOM
 YR MO   AVG.  HI   DATE  DIR
---------------------------------
 11  1   2.2  28.0    8    NW
 11  2   2.9  38.0   27    NW
 11  3   2.8  32.0   23    NW
 11  4   3.0  34.0   27    NW
 11  5   2.2  30.0   23   SSE
 11  6   1.8  27.0   27   SSE
 11  7   1.6  25.0   12     E
 11  8   1.5  24.0   19     E
 11  9   1.5  22.0   26    NW
 11 10   2.0  26.0   14   WNW
 11 11   4.1  34.0   14     S
 11 12   2.8  34.0   30     S
---------------------------------
         2.4  38.0  FEB   NW