APL Weather Summary—September 1999

                           
Monthly Observation Summary—September 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 80 61 0.00 0.00 22.14 0.00 23 76 19:55 30.09 30.18 29 76
2 80 60 0.00 0.00 22.14 0.00 18 78 19:53 30.04 30.13 33 65
3 85 61 0.00 0.00 22.14 0.00 15 77 19:44 30.02 30.09 23 90
4 77 67 0.93 0.93 23.07 1.08 24 68 19:31 30.01 30.10 79 100
5 78 72 1.66 2.59 24.73 1.84 27 76 19:46 29.91 30.02 90 100
6 81 71 1.14 3.73 25.87 1.32 20 76 19:29 29.82 29.98 73 100
7 87 70 0.04 3.77 25.91 0.88 19 76 19:44 29.80 29.91 53 100
8 87 63 0.40 4.17 26.31 1.48 20 77 19:43 29.82 29.93 48 100
9 87 64 2.09 6.26 28.40 2.80 19 77 19:21 29.77 29.91 60 100
10 81 65 0.04 6.30 28.44 0.04 18 77 19:41 29.80 29.91 42 100
11 78 58 0.00 6.30 28.44 0.00 17 76 19:40 29.90 30.13 30 85
12 83 53 0.00 6.30 28.44 0.00 13 78 19:36 30.12 30.26 28 100
13 80 55 0.00 6.30 28.44 0.00 17 79 19:34 30.10 30.23 40 100
14 84 62 0.00 6.30 28.44 0.00 15 78 19:34 30.05 30.16 47 100
15 70 63 0.87 7.17 29.31 0.52 16 56 19:12 29.90 30.10 86 100
16 66 58 3.53 10.70 32.84 0.72 46 60 19:29 29.36 29.91 71 100
17 72 55 0.00 10.70 32.84 0.00 33 77 19:30 29.79 30.15 36 74
18 75 51 0.00 10.70 32.84 0.00 10 77 19:28 30.10 30.23 34 96
19 75 48 0.00 10.70 32.84 0.00 14 78 19:26 30.09 30.21 49 100
20 78 55 0.07 10.77 32.91 0.12 19 76 19:17 29.93 30.10 52 100
21 65 49 1.10 11.87 34.01 0.52 24 62 19:13 29.84 29.95 96 100
22 61 45 0.15 12.02 34.16 0.12 28 76 19:22 29.84 29.93 46 100
23 73 47 0.00 12.02 34.16 0.00 17 76 19:20 29.93 30.02 36 88
24 77 51 0.00 12.02 34.16 0.00 13 76 19:17 29.90 29.99 43 98
25 80 57 0.00 12.02 34.16 0.00 18 75 19:17 29.93 30.13 40 95
26 78 56 0.00 12.02 34.16 0.00 13 75 19:13 30.12 30.29 61 98
27 69 65 0.02 12.04 34.18 0.04 8 60 19:02 30.24 30.34 97 100
28 74 66 0.21 12.25 34.39 0.60 21 68 19:07 30.21 30.31 84 100
29 71 65 0.44 12.69 34.83 0.28 28 65 19:03 29.71 30.21 92 100
30 68 53 0.83 13.52 35.66 1.44 37 77 19:09 29.69 30.02 42 100
                           
Avg. 76.7 58.9                      
                           
Max. 87   3.53     2.80 46 79     30.34 97 100
Min.   45         8 56   29.36   23 65
                           
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