ANNUAL CLIMATOLOGICAL SUMMARY

NAME: Westlawn  CITY: Fairfax County   STATE: VA  
ELEV:   328 ft  LAT:  38° 51' 30" N  LONG:  77° 10' 50" 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  36.9  24.1  30.8  -2.7  1060     0  55.9   1  10.5   24    0    7   27    0
 11  2  49.1  29.4  38.9   2.3   734     3  73.7  18  15.4   11    0    1   19    0
 11  3  53.7  36.1  44.9  -0.3   630     6  78.3  18  25.6    3    0    0    9    0
 11  4  69.6  47.9  58.5   3.6   276    81  88.6  25  32.4    2    0    0    0    0
 11  5  77.8  57.7  67.0   3.1    98   159  94.0  31  41.1    6    3    0    0    0
 11  6  84.3  65.5  74.0   1.5    14   283  96.8   9  51.9    4    5    0    0    0
 11  7  89.8  70.3  79.2   2.5     3   442  99.4  22  59.6    2   16    0    0    0
 11  8  84.1  66.5  74.3  -0.5    11   299  95.4   1  56.7   30    2    0    0    0
 11  9  74.8  62.3  68.4   0.9    44   145  85.5   4  46.2   16    0    0    0    0
 11 10  63.3  46.9  54.7  -1.3   335    15  76.8  10  30.3   31    0    0    1    0
 11 11  60.6  39.8  49.2   2.6   478     3  96.5  28  28.8   12    1    0    4    0
 11 12  50.6  33.6  42.2   4.5   708     0  62.1  15  22.7   12    0    0   16    0
------------------------------------------------------------------------------------
        66.3  48.4  56.9   1.3  4390  1435  99.4 JUL  10.5  JAN   27    8   76    0

                                PRECIPITATION (in)

               DEP.   MAX        DAYS OF RAIN 
               FROM   OBS.          OVER
 YR MO  TOTAL  NORM   DAY  DATE .01   .1   1
---------------------------------------------
 11  1  2.64  -0.92  1.82   26    8    4    1
 11  2  2.24  -0.68  0.71   28    8    7    0
 11  3  6.59   2.48  2.35   10   13    7    2
 11  4  3.89   0.56  1.29   16   12    6    1
 11  5  2.65  -1.57  0.54    4   14    6    0
 11  6  4.11   0.62  2.69   16   10    5    1
 11  7  4.05   0.36  2.02   13    5    4    2
 11  8  8.79   5.05  2.71   27   12   11    2
 11  9 14.12   9.58  7.60    8   13    9    3
 11 10  5.08   1.63  1.22   29   13    9    2
 11 11  2.12  -1.43  0.56   22    7    6    0
 11 12  4.79   1.39  2.85    7    7    6    1
---------------------------------------------
       61.07 17.07  7.60  SEP  122   80   15

                                WIND SPEED (mph)
                          DOM
 YR MO   AVG.  HI   DATE  DIR
---------------------------------
 11  1   0.9  22.0   21   WNW
 11  2   1.4  33.0   25   WNW
 11  3   0.5  22.0    2     N
 11  4   0.9  32.0    4     S
 11  5   0.6  21.0   23     S
 11  6   0.3  18.0    2     W
 11  7   0.4  17.0   13   NNE
 11  8   0.7  29.0   28     S
 11  9   0.4  21.0    6    NE
 11 10   0.6  24.0   29   NNE
 11 11   1.1  25.0   23   SSW
 11 12   0.9  30.0    8   SSW
---------------------------------
         0.7  33.0  FEB    N