APL Weather Summary—December 1999

                           
Monthly Observation Summary—December 1999
                           
Station "APLMD" (JHU/Applied Physics Laboratory), Laurel, MD (39°10'02"N, 76°53'52"W, 438 ft)
                           
                           
Day Max. Temp. Min. Temp. Rain Day Rain Month Rain Year Max. Rn Rate Peak Gust Max. Light Last Light Min. Press. Max. Press. Min. RH Max. RH
  (°F) (°F) (in.) (in.) (in.) (in./hr) (mph)     (in.) (in.) (%) (%)
                           
1 34 22 0.00 0.00 40.84 0.00 30 63 17:04 30.27 30.45 34 73
2 50 27 0.00 0.00 40.84 0.00 17 61 17:02 30.15 30.34 18 66
3 64 34 0.00 0.00 40.84 0.00 13 69 17:03 30.12 30.21 21 57
4 66 49 0.00 0.00 40.84 0.00 26 66 17:04 30.07 30.20 41 95
5 65 44 0.00 0.00 40.84 0.00 27 63 17:02 29.90 30.16 40 100
6 58 43 0.66 0.66 41.50 0.24 26 62 16:56 29.79 29.95 59 100
7 47 34 0.00 0.66 41.50 0.00 28 65 17:02 29.93 30.26 57 82
8 51 28 0.00 0.66 41.50 0.00 9 60 17:01 30.24 30.37 46 99
9 57 29 0.00 0.66 41.50 0.00 10 63 17:02 30.09 30.35 45 100
10 55 39 0.42 1.08 41.92 0.28 39 48 17:04 29.71 30.09 46 100
11 46 35 0.00 1.08 41.92 0.00 29 60 17:03 29.98 30.15 40 70
12 55 32 0.00 1.08 41.92 0.00 16 66 17:04 30.02 30.16 18 72
13 44 30 0.54 1.62 42.46 0.12 13 51 16:51 29.93 30.07 69 100
14 45 37 1.09 2.71 43.55 0.04 25 61 16:57 29.76 29.99 100 100
15 45 36 0.01 2.72 43.56 0.04 14 57 16:55 29.85 30.07 100 100
16 48 36 0.00 2.72 43.56 0.00 33 67 17:06 29.84 30.07 33 100
17 49 31 0.00 2.72 43.56 0.00 16 66 17:04 30.02 30.20 31 73
18 50 31 0.00 2.72 43.56 0.00 11 60 17:05 30.09 30.26 42 86
19 41 34 0.00 2.72 43.56 0.00 18 60 17:01 30.23 30.34 71 89
20 47 38 0.19 2.91 43.75 0.04 19 52 17:03 29.90 30.27 84 100
21 43 34 0.01 2.92 43.76 0.04 17 65 16:47 29.95 30.18 40 100
22 38 25 0.00 2.92 43.76 0.00 18 60 17:09 30.12 30.27 32 96
23 45 21 0.01 2.93 43.77 0.04 26 64 17:06 30.02 30.27 46 98
24 28 18 0.00 2.93 43.77 0.00 18 63 17:09 30.10 30.29 44 69
25 30 16 0.00 2.93 43.77 0.00 19 65 17:11 30.09 30.38 46 80
26 42 22 0.00 2.93 43.77 0.00 28 63 17:11 29.62 30.09 42 81
27 34 28 0.00 2.93 43.77 0.00 28 62 17:05 29.74 29.87 44 78
28 32 22 0.00 2.93 43.77 0.00 18 67 17:07 29.55 29.84 50 100
29 39 25 0.00 2.93 43.77 0.00 23 61 17:13 29.57 29.90 42 99
30 54 34 0.00 2.93 43.77 0.00 19 65 17:09 29.74 29.90 36 72
31 54 32 0.00 2.93 43.77 0.00 15 63 17:15 29.85 30.15 44 98
                           
Avg. 47.0 31.2                      
                           
Max. 66   1.09     0.28 39 69     30.45 100 100
Min.   16         9 48   29.55   18 57
                           
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