| Monthly Observation SummaryMay 1998 | |||||||||||||
| 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 | 66 | 56 | 0.44 | 0.44 | 22.99 | 0.28 | 15 | 69 | 20:06 | 29.60 | 29.91 | 79 | 100 |
| 2 | 71 | 54 | 0.39 | 0.83 | 23.38 | 0.40 | 25 | 82 | 20:09 | 29.54 | 29.63 | 55 | 100 |
| 3 | 78 | 53 | 0.26 | 1.09 | 23.64 | 0.24 | 18 | 80 | 20:13 | 29.62 | 29.77 | 45 | 100 |
| 4 | 72 | 57 | 0.08 | 1.17 | 23.72 | 0.04 | 15 | 78 | 20:16 | 29.71 | 29.84 | 71 | 100 |
| 5 | 67 | 53 | 0.96 | 2.13 | 24.68 | 1.44 | 19 | 75 | 20:22 | 29.76 | 29.95 | 80 | 100 |
| 6 | 75 | 53 | 0.01 | 2.14 | 24.69 | 0.04 | 14 | 82 | 20:22 | 29.88 | 29.98 | 50 | 100 |
| 7 | 71 | 53 | 0.34 | 2.48 | 25.03 | 0.28 | 14 | 78 | 20:08 | 29.74 | 29.95 | 72 | 100 |
| 8 | 68 | 59 | 0.77 | 3.25 | 25.80 | 0.88 | 15 | 73 | 20:12 | 29.49 | 29.74 | 86 | 100 |
| 9 | 67 | 56 | 0.01 | 3.26 | 25.81 | 0.04 | 39 | 76 | 20:23 | 29.58 | 29.77 | 70 | 100 |
| 10 | 63 | 55 | 0.09 | 3.35 | 25.90 | 0.04 | 19 | 75 | 20:19 | 29.68 | 29.77 | 86 | 100 |
| 11 | 57 | 53 | 0.41 | 3.76 | 26.31 | 0.24 | 14 | 69 | 20:18 | 29.66 | 29.77 | 94 | 100 |
| 12 | 53 | 50 | 0.57 | 4.33 | 26.88 | 0.24 | 19 | 66 | 20:23 | 29.74 | 30.02 | 100 | 100 |
| 13 | 72 | 50 | 0.00 | 4.33 | 26.88 | 0.00 | 16 | 81 | 20:29 | 30.02 | 30.15 | 47 | 100 |
| 14 | 80 | 47 | 0.00 | 4.33 | 26.88 | 0.00 | 13 | 80 | 20:31 | 30.07 | 30.16 | 28 | 100 |
| 15 | 87 | 50 | 0.00 | 4.33 | 26.88 | 0.00 | 13 | 82 | 20:31 | 29.99 | 30.10 | 30 | 100 |
| 16 | 92 | 62 | 0.00 | 4.33 | 26.88 | 0.00 | 13 | 78 | 20:31 | 29.91 | 30.02 | 31 | 85 |
| 17 | 86 | 69 | 0.00 | 4.33 | 26.88 | 0.00 | 18 | 78 | 20:35 | 29.95 | 30.05 | 33 | 88 |
| 18 | 86 | 62 | 0.00 | 4.33 | 26.88 | 0.00 | 18 | 78 | 20:34 | 29.98 | 30.13 | 31 | 64 |
| 19 | 91 | 66 | 0.00 | 4.33 | 26.88 | 0.00 | 23 | 78 | 20:34 | 29.85 | 30.01 | 27 | 66 |
| 20 | 88 | 70 | 0.00 | 4.33 | 26.88 | 0.00 | 24 | 77 | 20:34 | 29.79 | 29.91 | 39 | 63 |
| 21 | 83 | 62 | 0.00 | 4.33 | 26.88 | 0.00 | 28 | 77 | 20:37 | 29.69 | 29.87 | 24 | 79 |
| 22 | 72 | 52 | 0.00 | 4.33 | 26.88 | 0.00 | 21 | 80 | 20:37 | 29.87 | 29.98 | 35 | 82 |
| 23 | 73 | 53 | 0.00 | 4.33 | 26.88 | 0.00 | 18 | 80 | 20:39 | 29.91 | 30.04 | 41 | 77 |
| 24 | 77 | 50 | 0.12 | 4.45 | 27.00 | 0.12 | 24 | 82 | 20:37 | 29.87 | 30.07 | 35 | 100 |
| 25 | 84 | 59 | 0.01 | 4.46 | 27.01 | 0.04 | 27 | 78 | 20:30 | 29.84 | 29.95 | 41 | 100 |
| 26 | 76 | 62 | 0.00 | 4.46 | 27.01 | 0.00 | 20 | 79 | 20:40 | 29.84 | 30.02 | 46 | 88 |
| 27 | 74 | 61 | 0.00 | 4.46 | 27.01 | 0.00 | 12 | 76 | 20:43 | 29.99 | 30.09 | 58 | 100 |
| 28 | 86 | 57 | 0.00 | 4.46 | 27.01 | 0.00 | 13 | 78 | 20:43 | 30.04 | 30.15 | 33 | 100 |
| 29 | 89 | 62 | 0.00 | 4.46 | 27.01 | 0.00 | 18 | 78 | 20:41 | 29.91 | 30.09 | 41 | 100 |
| 30 | 91 | 65 | 0.00 | 4.46 | 27.01 | 0.00 | 12 | 78 | 20:42 | 29.95 | 30.04 | 36 | 99 |
| 31 | 89 | 67 | 0.00 | 4.46 | 27.01 | 0.00 | 27 | 78 | 20:39 | 29.62 | 29.95 | 51 | 94 |
| Avg. | 76.9 | 57.4 | |||||||||||
| Max. | 92 | 0.96 | 1.44 | 39 | 82 | 30.16 | 100 | 100 | |||||
| Min. | 47 | 12 | 66 | 29.49 | 24 | 63 | |||||||