| Monthly Observation SummaryOctober 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 | 79 | 51 | 0.00 | 0.00 | 33.14 | 0.00 | 38 | 76 | 19:07 | 29.76 | 30.12 | 24 | 96 |
| 2 | 69 | 43 | 0.00 | 0.00 | 33.14 | 0.00 | 21 | 76 | 19:04 | 30.10 | 30.23 | 24 | 74 |
| 3 | 68 | 43 | 0.05 | 0.05 | 33.19 | 0.04 | 13 | 76 | 18:55 | 30.18 | 30.31 | 39 | 96 |
| 4 | 53 | 49 | 0.14 | 0.19 | 33.33 | 0.16 | 14 | 51 | 18:54 | 30.24 | 30.34 | 96 | 100 |
| 5 | 65 | 50 | 0.00 | 0.19 | 33.33 | 0.00 | 10 | 66 | 18:52 | 30.31 | 30.38 | 78 | 100 |
| 6 | 70 | 56 | 0.00 | 0.19 | 33.33 | 0.00 | 13 | 72 | 18:57 | 30.37 | 30.49 | 57 | 100 |
| 7 | 71 | 57 | 0.00 | 0.19 | 33.33 | 0.00 | 17 | 73 | 18:48 | 30.16 | 30.42 | 58 | 96 |
| 8 | 72 | 59 | 1.02 | 1.21 | 34.35 | 0.52 | 21 | 67 | 18:55 | 29.96 | 30.16 | 81 | 100 |
| 9 | 60 | 56 | 0.03 | 1.24 | 34.38 | 0.04 | 16 | 65 | 18:49 | 30.01 | 30.05 | 90 | 100 |
| 10 | 64 | 55 | 0.05 | 1.29 | 34.43 | 0.04 | 23 | 69 | 18:52 | 29.99 | 30.09 | 65 | 100 |
| 11 | 72 | 52 | 0.00 | 1.29 | 34.43 | 0.00 | 24 | 75 | 18:52 | 30.07 | 30.21 | 50 | 89 |
| 12 | 70 | 53 | 0.01 | 1.30 | 34.44 | 0.04 | 11 | 76 | 18:50 | 30.20 | 30.29 | 59 | 100 |
| 13 | 69 | 53 | 0.01 | 1.31 | 34.45 | 0.04 | 14 | 69 | 18:47 | 29.98 | 30.21 | 63 | 100 |
| 14 | 62 | 48 | 0.01 | 1.32 | 34.46 | 0.04 | 21 | 71 | 18:47 | 29.95 | 30.12 | 38 | 98 |
| 15 | 65 | 45 | 0.00 | 1.32 | 34.46 | 0.00 | 19 | 75 | 18:46 | 30.12 | 30.37 | 44 | 87 |
| 16 | 66 | 42 | 0.00 | 1.32 | 34.46 | 0.00 | 14 | 74 | 18:43 | 30.37 | 30.48 | 39 | 98 |
| 17 | 72 | 40 | 0.00 | 1.32 | 34.46 | 0.00 | 12 | 73 | 18:40 | 30.31 | 30.46 | 41 | 100 |
| 18 | 78 | 48 | 0.00 | 1.32 | 34.46 | 0.00 | 19 | 74 | 18:39 | 30.09 | 30.32 | 39 | 100 |
| 19 | 72 | 57 | 0.00 | 1.32 | 34.46 | 0.00 | 17 | 73 | 18:38 | 30.05 | 30.16 | 32 | 71 |
| 20 | 68 | 53 | 0.00 | 1.32 | 34.46 | 0.00 | 26 | 73 | 18:39 | 30.10 | 30.20 | 26 | 66 |
| 21 | 62 | 47 | 0.00 | 1.32 | 34.46 | 0.00 | 23 | 73 | 18:37 | 30.07 | 30.21 | 34 | 71 |
| 22 | 50 | 42 | 0.00 | 1.32 | 34.46 | 0.00 | 33 | 75 | 18:37 | 30.10 | 30.38 | 39 | 92 |
| 23 | 61 | 40 | 0.00 | 1.32 | 34.46 | 0.00 | 19 | 72 | 18:35 | 30.32 | 30.45 | 33 | 79 |
| 24 | 71 | 47 | 0.00 | 1.32 | 34.46 | 0.00 | 18 | 72 | 18:34 | 30.27 | 30.42 | 29 | 56 |
| 25 | 72 | 49 | 0.00 | 1.32 | 34.46 | 0.00 | 16 | 73 | 17:30 | 30.21 | 30.35 | 26 | 76 |
| 26 | 72 | 50 | 0.00 | 1.32 | 34.46 | 0.00 | 11 | 71 | 17:30 | 30.24 | 30.37 | 38 | 94 |
| 27 | 63 | 50 | 0.00 | 1.32 | 34.46 | 0.00 | 9 | 65 | 17:27 | 30.24 | 30.42 | 68 | 100 |
| 28 | 69 | 52 | 0.00 | 1.32 | 34.46 | 0.00 | 19 | 73 | 17:28 | 29.84 | 30.24 | 59 | 100 |
| 29 | 62 | 45 | 0.00 | 1.32 | 34.46 | 0.00 | 33 | 71 | 17:26 | 29.85 | 30.10 | 37 | 79 |
| 30 | 65 | 36 | 0.00 | 1.32 | 34.46 | 0.00 | 17 | 70 | 17:27 | 29.87 | 30.09 | 31 | 96 |
| 31 | 64 | 40 | 0.00 | 1.32 | 34.46 | 0.00 | 21 | 68 | 17:26 | 29.93 | 30.09 | 26 | 83 |
| Avg. | 67.0 | 48.6 | |||||||||||
| Max. | 79 | 1.02 | 0.52 | 38 | 76 | 30.49 | 96 | 100 | |||||
| Min. | 36 | 9 | 51 | 29.76 | 24 | 56 | |||||||