| Monthly Observation SummaryApril 2000 | |||||||||||||
| 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 | 70 | 40 | 0.00 | 0.00 | 11.07 | 0.00 | 16 | 76 | 18:47 | 30.04 | 30.23 | 20 | 69 |
| 2 | 67 | 47 | 0.08 | 0.08 | 11.15 | 0.04 | 25 | 75 | 19:39 | 29.90 | 30.07 | 36 | 100 |
| 3 | 74 | 56 | 0.23 | 0.31 | 11.38 | 1.00 | 24 | 80 | 19:46 | 29.58 | 29.93 | 62 | 100 |
| 4 | 66 | 42 | 0.25 | 0.56 | 11.63 | 0.64 | 34 | 72 | 19:49 | 29.44 | 29.73 | 50 | 100 |
| 5 | 54 | 35 | 0.00 | 0.56 | 11.63 | 0.00 | 33 | 80 | 19:51 | 29.69 | 29.90 | 28 | 79 |
| 6 | 79 | 42 | 0.00 | 0.56 | 11.63 | 0.00 | 31 | 77 | 19:52 | 29.51 | 29.84 | 22 | 76 |
| 7 | 72 | 49 | 0.00 | 0.56 | 11.63 | 0.00 | 22 | 78 | 19:52 | 29.66 | 29.99 | 27 | 82 |
| 8 | 76 | 38 | 0.90 | 1.46 | 12.53 | 0.28 | 38 | 78 | 19:39 | 29.43 | 29.69 | 38 | 100 |
| 9 | 51 | 30 | 0.14 | 1.60 | 12.67 | 0.12 | 41 | 78 | 19:55 | 29.54 | 29.93 | 30 | 100 |
| 10 | 62 | 38 | 0.00 | 1.60 | 12.67 | 0.00 | 26 | 77 | 19:53 | 29.90 | 30.21 | 21 | 90 |
| 11 | 54 | 45 | 0.02 | 1.62 | 12.69 | 0.04 | 20 | 71 | 19:44 | 29.99 | 30.23 | 34 | 100 |
| 12 | 52 | 38 | 0.01 | 1.63 | 12.70 | 0.04 | 32 | 77 | 19:58 | 29.95 | 30.38 | 42 | 100 |
| 13 | 51 | 32 | 0.00 | 1.63 | 12.70 | 0.00 | 15 | 76 | 19:56 | 30.31 | 30.51 | 23 | 78 |
| 14 | 59 | 33 | 0.00 | 1.63 | 12.70 | 0.00 | 14 | 75 | 19:58 | 30.16 | 30.35 | 39 | 100 |
| 15 | 61 | 48 | 0.09 | 1.72 | 12.79 | 0.04 | 8 | 69 | 19:55 | 29.88 | 30.20 | 80 | 100 |
| 16 | 81 | 57 | 0.15 | 1.87 | 12.94 | 0.16 | 11 | 79 | 20:00 | 29.85 | 29.98 | 41 | 100 |
| 17 | 63 | 45 | 1.39 | 3.26 | 14.33 | 0.48 | 24 | 58 | 19:50 | 29.88 | 29.98 | 82 | 100 |
| 18 | 45 | 41 | 0.75 | 4.01 | 15.08 | 0.28 | 21 | 53 | 19:57 | 29.84 | 29.95 | 100 | 100 |
| 19 | 65 | 44 | 0.00 | 4.01 | 15.08 | 0.00 | 21 | 80 | 20:03 | 29.90 | 30.01 | 55 | 100 |
| 20 | 70 | 45 | 0.00 | 4.01 | 15.08 | 0.00 | 24 | 78 | 19:55 | 29.77 | 30.05 | 53 | 100 |
| 21 | 61 | 50 | 0.49 | 4.50 | 15.57 | 1.36 | 20 | 72 | 20:00 | 29.46 | 29.80 | 88 | 100 |
| 22 | 55 | 45 | 0.03 | 4.53 | 15.60 | 0.04 | 21 | 71 | 20:08 | 29.49 | 29.65 | 77 | 100 |
| 23 | 53 | 43 | 0.00 | 4.53 | 15.60 | 0.00 | 26 | 74 | 20:05 | 29.62 | 29.77 | 61 | 92 |
| 24 | 67 | 45 | 0.00 | 4.53 | 15.60 | 0.00 | 19 | 77 | 20:06 | 29.76 | 29.90 | 33 | 83 |
| 25 | 55 | 41 | 0.10 | 4.63 | 15.70 | 0.12 | 18 | 74 | 20:10 | 29.74 | 29.87 | 59 | 96 |
| 26 | 56 | 37 | 0.00 | 4.63 | 15.70 | 0.00 | 11 | 77 | 20:10 | 29.85 | 29.98 | 52 | 100 |
| 27 | 51 | 44 | 0.00 | 4.63 | 15.70 | 0.00 | 17 | 70 | 20:10 | 29.87 | 29.98 | 82 | 100 |
| 28 | 59 | 46 | 0.00 | 4.63 | 15.70 | 0.00 | 12 | 71 | 20:12 | 29.82 | 29.90 | 62 | 100 |
| 29 | 68 | 44 | 0.00 | 4.63 | 15.70 | 0.00 | 19 | 78 | 20:14 | 29.84 | 29.95 | 28 | 100 |
| 30 | 69 | 48 | 0.00 | 4.63 | 15.70 | 0.00 | 28 | 76 | 20:14 | 29.88 | 30.09 | 17 | 67 |
| Avg. | 62.2 | 42.9 | |||||||||||
| Max. | 81 | 1.39 | 1.36 | 41 | 80 | 30.51 | 100 | 100 | |||||
| Min. | 30 | 8 | 53 | 29.43 | 17 | 67 | |||||||