| Monthly Observation SummaryJanuary 2001 | |||||||||||||
| 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 | 0.00 | 0.00 | 22 | 65 | 17:11 | 30.04 | 30.23 | 51 | 76 |
| 2 | 29 | 19 | 0.00 | 0.00 | 0.00 | 0.00 | 28 | 65 | 17:15 | 30.20 | 30.34 | 46 | 77 |
| 3 | 33 | 16 | 0.00 | 0.00 | 0.00 | 0.00 | 19 | 60 | 17:15 | 29.99 | 30.32 | 42 | 80 |
| 4 | 34 | 20 | 0.00 | 0.00 | 0.00 | 0.00 | 21 | 67 | 17:16 | 29.91 | 30.02 | 57 | 83 |
| 5 | 31 | 21 | 0.14 | 0.14 | 0.14 | 0.04 | 18 | 54 | 17:11 | 29.51 | 29.93 | 76 | 100 |
| 6 | 38 | 27 | 0.00 | 0.14 | 0.14 | 0.00 | 31 | 64 | 17:17 | 29.54 | 29.80 | 55 | 100 |
| 7 | 45 | 22 | 0.00 | 0.14 | 0.14 | 0.00 | 13 | 62 | 17:17 | 29.77 | 29.85 | 48 | 100 |
| 8 | 34 | 29 | 0.28 | 0.42 | 0.42 | 0.12 | 19 | 51 | 17:18 | 29.65 | 29.80 | 84 | 100 |
| 9 | 31 | 22 | 0.00 | 0.42 | 0.42 | 0.00 | 31 | 62 | 17:19 | 29.76 | 29.96 | 51 | 88 |
| 10 | 43 | 26 | 0.00 | 0.42 | 0.42 | 0.00 | 29 | 61 | 17:23 | 29.84 | 30.10 | 32 | 58 |
| 11 | 55 | 33 | 0.00 | 0.42 | 0.42 | 0.00 | 25 | 69 | 17:21 | 29.96 | 30.05 | 24 | 58 |
| 12 | 42 | 26 | 0.00 | 0.42 | 0.42 | 0.00 | 13 | 62 | 17:25 | 30.01 | 30.21 | 44 | 91 |
| 13 | 46 | 20 | 0.00 | 0.42 | 0.42 | 0.00 | 9 | 61 | 17:26 | 30.18 | 30.32 | 38 | 100 |
| 14 | 44 | 22 | 0.01 | 0.43 | 0.43 | 0.04 | 9 | 61 | 17:20 | 30.05 | 30.27 | 59 | 100 |
| 15 | 41 | 34 | 0.03 | 0.46 | 0.46 | 0.04 | 8 | 55 | 17:23 | 29.90 | 30.09 | 100 | 100 |
| 16 | 42 | 32 | 0.00 | 0.46 | 0.46 | 0.00 | 28 | 59 | 17:24 | 29.88 | 30.16 | 58 | 100 |
| 17 | 40 | 31 | 0.00 | 0.46 | 0.46 | 0.00 | 16 | 63 | 17:23 | 30.09 | 30.20 | 63 | 87 |
| 18 | 34 | 28 | 0.04 | 0.50 | 0.50 | 0.04 | 11 | 58 | 17:12 | 29.96 | 30.20 | 84 | 100 |
| 19 | 38 | 33 | 1.55 | 2.05 | 2.05 | 0.48 | 13 | 55 | 17:22 | 29.68 | 29.98 | 100 | 100 |
| 20 | 35 | 28 | 0.53 | 2.58 | 2.58 | 0.16 | 24 | 46 | 17:17 | 29.73 | 29.93 | 100 | 100 |
| 21 | 31 | 20 | 0.05 | 2.63 | 2.63 | 0.04 | 31 | 65 | 17:35 | 29.74 | 30.37 | 54 | 100 |
| 22 | 38 | 16 | 0.00 | 2.63 | 2.63 | 0.00 | 13 | 62 | 17:35 | 30.34 | 30.51 | 48 | 100 |
| 23 | 45 | 12 | 0.00 | 2.63 | 2.63 | 0.00 | 11 | 67 | 17:34 | 29.99 | 30.37 | 40 | 100 |
| 24 | 48 | 24 | 0.00 | 2.63 | 2.63 | 0.00 | 14 | 67 | 17:37 | 29.87 | 30.02 | 45 | 98 |
| 25 | 37 | 24 | 0.00 | 2.63 | 2.63 | 0.00 | 28 | 70 | 17:39 | 29.90 | 30.24 | 43 | 74 |
| 26 | 39 | 18 | 0.00 | 2.63 | 2.63 | 0.00 | 18 | 64 | 17:38 | 29.84 | 30.29 | 38 | 83 |
| 27 | 44 | 31 | 0.00 | 2.63 | 2.63 | 0.00 | 37 | 68 | 17:40 | 29.74 | 30.13 | 44 | 66 |
| 28 | 41 | 24 | 0.00 | 2.63 | 2.63 | 0.00 | 21 | 62 | 17:39 | 30.10 | 30.26 | 34 | 71 |
| 29 | 43 | 25 | 0.00 | 2.63 | 2.63 | 0.00 | 16 | 67 | 17:39 | 29.96 | 30.31 | 40 | 80 |
| 30 | 54 | 33 | 0.74 | 3.37 | 3.37 | 0.36 | 18 | 72 | 17:43 | 29.46 | 29.99 | 73 | 100 |
| 31 | 51 | 38 | 0.00 | 3.37 | 3.37 | 0.00 | 30 | 71 | 17:44 | 29.46 | 29.84 | 49 | 80 |
| Avg. | 40.0 | 25.0 | |||||||||||
| Max. | 55 | 1.55 | 0.48 | 37 | 72 | 30.51 | 100 | 100 | |||||
| Min. | 12 | 8 | 46 | 29.46 | 24 | 58 | |||||||