Monthly Climatological Summary for Dec 2009

Name: OFallon Weather   City: OFallon   State: MO
Elevation: 532 ft  Lat: N 38° 50' 20"   Lon: W 090° 43' 42"

                  Temperature (°F), Rain (in), Wind Speed (mph)

                                      Heat  Cool        Avg
    Mean                              Deg   Deg         Wind                 Dom
Day Temp  High   Time   Low    Time   Days  Days  Rain  Speed High   Time    Dir
----------------------------------------------------------------------------------
01  45.5  56.3   13:10  37.6   05:38  19.5   0.0  0.00   5.6  19.0   09:57   SSW
02  35.9  40.8   13:14  31.8   04:50  29.1   0.0  0.15   4.7  22.0   23:24    NW
03  29.9  35.1   13:16  23.3   23:59  35.1   0.0  0.00   6.0  20.0   13:01     W
04  24.7  30.8   14:28  19.7   22:55  40.3   0.0  0.00   2.4  13.0   13:21   WSW
05  28.9  39.4   15:39  20.3   04:14  36.1   0.0  0.00   4.9  17.0   10:03     S
06  31.4  37.5   14:16  22.8   06:21  33.6   0.0  0.00   4.1  20.0   21:04    SE
07  33.9  36.5   08:13  31.0   23:13  31.1   0.0  0.00   3.3  19.0   08:30     W
08  34.4  40.8   23:57  30.8   00:16  30.6   0.0  0.62   4.6  19.0   23:59     E
09  22.6  41.4   00:25  11.0   23:55  42.4   0.0  0.05  14.1  42.0   06:47   WSW
10  17.1  25.5   15:57   8.7   06:58  47.9   0.0  0.00   6.6  21.0   12:56   WSW
11  28.7  39.5   15:34  18.5   05:56  36.3   0.0  0.00   4.4  18.0   00:43   SSW
12  33.8  39.4   14:26  26.8   03:41  31.2   0.0  0.36   4.0  19.0   18:03    SE
13  39.8  43.6   15:09  36.0   19:12  25.2   0.0  0.03   3.4  13.0   22:51   SSE
14  39.5  53.0   10:56  25.6   23:58  25.5   0.0  0.00   6.9  28.0   14:09   WSW
15  20.8  25.6   00:00  16.0   23:58  44.2   0.0  0.00   4.8  19.0   05:38    NW
16  25.0  38.1   15:38  13.7   05:06  40.0   0.0  0.00   2.0  13.0   11:50    SE
17  37.5  52.9   15:10  23.5   04:47  27.5   0.0  0.00   3.2  19.0   13:09   SSE
18  35.8  42.8   12:39  29.9   23:24  29.2   0.0  0.05   2.6  13.0   14:19    NW
19  28.5  31.1   06:18  24.6   23:46  36.5   0.0  0.01   6.1  20.0   13:38   WNW
20  26.8  29.6   23:57  24.2   01:45  38.2   0.0  0.00   3.2  15.0   14:04    SW
21  31.3  33.9   14:20  29.2   19:38  33.7   0.0  0.00   2.1  12.0   21:31   SSE
22  33.7  37.6   14:32  29.5   07:07  31.3   0.0  0.00   4.5  14.0   05:39   ESE
23  44.5  49.9   20:58  36.8   00:03  20.5   0.0  0.70   5.6  22.0   21:18   ESE
24  46.4  50.8   22:01  44.0   15:44  18.6   0.0  0.99   7.3  35.0   21:59   ESE
25  27.9  50.0   00:00  18.7   10:26  37.1   0.0  0.14  10.8  32.0   08:38   SSW
26  26.5  28.0   15:00  25.0   00:00  38.5   0.0  0.00   9.4  29.0   11:46   SSW
27  24.0  27.4   04:22  19.3   22:47  41.0   0.0  0.00   7.1  29.0   11:31   WSW
28  28.6  37.1   14:20  20.4   00:05  36.4   0.0  0.00   8.2  24.0   13:36     W
29  23.5  27.7   23:16  16.6   07:39  41.5   0.0  0.00   2.9  12.0   19:59   ENE
30  31.0  34.5   15:28  26.8   04:10  34.0   0.0  0.07   4.5  12.0   11:26   SSE
31  28.6  34.4   02:45  15.7   23:59  36.4   0.0  0.01   4.8  20.0   13:39   WNW
----------------------------------------------------------------------------------
    31.2  56.3     1     8.7    10  1048.5   0.0  3.18   5.3  42.0     9      SW

Max >=  90.0  0
Max <=  32.0  8
Min <=  32.0 27
Min <=   0.0  0
Max Rain: 0.99 on day 24
Days of Rain: 12 (>= 0.01 in)  6 (>= 0.10 in)  0 (>= 1.00 in)
Heat Base: 65.0  Cool Base: 65.0  Method: Integration