| Monthly Observation SummaryJanuary 1997 | |||||||||||||
| 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 | 32 | 26 | 0.00 | 0.00 | 0.00 | 0.00 | 13 | 51 | 17:08 | 29.90 | 30.29 | 78 | 100 |
| 2 | 52 | 32 | 0.00 | 0.00 | 0.00 | 0.00 | 11 | 61 | 17:08 | 29.62 | 29.90 | 71 | 100 |
| 3 | 63 | 48 | 0.00 | 0.00 | 0.00 | 0.00 | 15 | 60 | 17:16 | 29.57 | 29.74 | 67 | 100 |
| 4 | 64 | 47 | 0.00 | 0.00 | 0.00 | 0.00 | 9 | 62 | 17:19 | 29.69 | 29.87 | 68 | 100 |
| 5 | 68 | 46 | 0.03 | 0.03 | 0.03 | 0.04 | 22 | 63 | 17:19 | 29.38 | 29.69 | 46 | 100 |
| 6 | 53 | 38 | 0.00 | 0.03 | 0.03 | 0.00 | 28 | 53 | 17:21 | 29.54 | 29.95 | 31 | 56 |
| 7 | 38 | 26 | 0.00 | 0.03 | 0.03 | 0.00 | 34 | 55 | 17:22 | 29.91 | 30.13 | 31 | 66 |
| 8 | 36 | 23 | 0.00 | 0.03 | 0.03 | 0.00 | 24 | 55 | 17:21 | 30.13 | 30.23 | 43 | 66 |
| 9 | 30 | 26 | 0.00 | 0.03 | 0.03 | 0.00 | 12 | 49 | 17:15 | 29.38 | 30.15 | 56 | 100 |
| 10 | 41 | 28 | 0.14 | 0.17 | 0.17 | 0.12 | 23 | 61 | 17:24 | 29.36 | 29.58 | 43 | 100 |
| 11 | 30 | 19 | 0.00 | 0.17 | 0.17 | 0.00 | 28 | 56 | 17:27 | 29.54 | 30.09 | 45 | 100 |
| 12 | 27 | 16 | 0.00 | 0.17 | 0.17 | 0.00 | 18 | 56 | 17:28 | 30.09 | 30.34 | 45 | 75 |
| 13 | 27 | 14 | 0.00 | 0.17 | 0.17 | 0.00 | 23 | 56 | 17:29 | 30.32 | 30.42 | 45 | 74 |
| 14 | 32 | 11 | 0.00 | 0.17 | 0.17 | 0.00 | 18 | 52 | 17:28 | 30.34 | 30.42 | 50 | 92 |
| 15 | 41 | 11 | 0.00 | 0.17 | 0.17 | 0.00 | 15 | 60 | 17:28 | 29.88 | 30.37 | 39 | 95 |
| 16 | 45 | 19 | 0.56 | 0.73 | 0.73 | 0.28 | 37 | 62 | 17:30 | 29.51 | 29.90 | 46 | 100 |
| 17 | 19 | 8 | 0.00 | 0.73 | 0.73 | 0.00 | 33 | 66 | 17:33 | 29.85 | 30.15 | 41 | 62 |
| 18 | 17 | 8 | 0.00 | 0.73 | 0.73 | 0.00 | 29 | 67 | 17:33 | 29.95 | 30.23 | 37 | 64 |
| 19 | 24 | 5 | 0.00 | 0.73 | 0.73 | 0.00 | 13 | 57 | 17:34 | 30.04 | 30.26 | 37 | 81 |
| 20 | 42 | 14 | 0.00 | 0.73 | 0.73 | 0.00 | 19 | 67 | 17:34 | 29.90 | 30.09 | 51 | 82 |
| 21 | 44 | 28 | 0.00 | 0.73 | 0.73 | 0.00 | 21 | 58 | 17:36 | 30.09 | 30.49 | 33 | 69 |
| 22 | 50 | 29 | 0.21 | 0.94 | 0.94 | 0.24 | 22 | 67 | 17:18 | 29.85 | 30.38 | 68 | 100 |
| 23 | 55 | 33 | 0.00 | 0.94 | 0.94 | 0.00 | 24 | 58 | 17:36 | 29.85 | 30.34 | 43 | 100 |
| 24 | 42 | 27 | 1.26 | 2.20 | 2.20 | 0.48 | 14 | 58 | 17:29 | 29.88 | 30.43 | 76 | 100 |
| 25 | 48 | 33 | 0.04 | 2.24 | 2.24 | 0.24 | 29 | 63 | 17:41 | 29.71 | 30.04 | 41 | 100 |
| 26 | 33 | 24 | 0.00 | 2.24 | 2.24 | 0.00 | 28 | 65 | 17:39 | 30.04 | 30.53 | 49 | 65 |
| 27 | 37 | 27 | 0.13 | 2.37 | 2.37 | 0.12 | 16 | 66 | 17:35 | 30.15 | 30.57 | 61 | 100 |
| 28 | 45 | 30 | 0.69 | 3.06 | 3.06 | 0.24 | 29 | 66 | 17:42 | 29.96 | 30.34 | 52 | 100 |
| 29 | 35 | 23 | 0.00 | 3.06 | 3.06 | 0.00 | 19 | 60 | 17:46 | 30.34 | 30.57 | 35 | 81 |
| 30 | 39 | 20 | 0.00 | 3.06 | 3.06 | 0.00 | 11 | 63 | 17:43 | 30.09 | 30.48 | 50 | 100 |
| 31 | 42 | 30 | 0.00 | 3.06 | 3.06 | 0.00 | 19 | 67 | 17:38 | 29.63 | 30.09 | 75 | 100 |
| Avg. | 40.4 | 24.8 | |||||||||||
| Max. | 68 | 1.26 | 0.48 | 37 | 67 | 30.57 | 78 | 100 | |||||
| Min. | 5 | 9 | 49 | 29.36 | 31 | 56 | |||||||