| Point Forecast: Largo MD 38.87N 76.86W (Elev. 177 ft) |
Last Update: 10:53 pm EDT Jul 19, 2026 |
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| Date | 07/20 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 72 | 71 | 70 | 69 | 69 | 68 | 67 | 69 | 71 | 73 | 76 | 78 | 80 | 82 | 82 | 83 | 84 | 82 | 82 | 82 | 79 | 76 | 75 | 74 |
| Dewpoint (°F) | 64 | 63 | 63 | 63 | 62 | 62 | 62 | 63 | 64 | 64 | 64 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 66 | 66 | 66 | 67 | 68 | 68 |
| Heat Index (°F) | 76 | 78 | 81 | 83 | 83 | 84 | 86 | 84 | 84 | 84 | 79 | 76 | 75 | |||||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 6 | 6 | 5 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Wind Dir | NE | NE | NE | N | NE | NE | NE | NE | NE | E | E | E | E | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 39 | 37 | 35 | 35 | 35 | 35 | 33 | 30 | 28 | 29 | 31 | 32 | 34 | 35 | 37 | 39 | 40 | 42 | 44 | 47 | 49 | 54 | 60 | 65 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 11 | 11 | 21 | 21 | 21 | 21 | 21 | 21 | 10 | 10 | 10 | 10 |
| Relative Humidity (%) | 76 | 76 | 78 | 81 | 78 | 81 | 84 | 81 | 79 | 73 | 66 | 60 | 56 | 55 | 55 | 53 | 53 | 56 | 58 | 58 | 64 | 74 | 79 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/21 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 73 | 75 | 77 | 79 | 81 | 83 | 85 | 86 | 86 | 85 | 84 | 82 | 80 | 78 | 77 | 76 |
| Dewpoint (°F) | 69 | 69 | 70 | 70 | 71 | 71 | 72 | 71 | 73 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 |
| Heat Index (°F) | 75 | 77 | 79 | 87 | 91 | 94 | 96 | 96 | 94 | 93 | 89 | 85 | 78 | 77 | 76 | |||||||||
| Surface Wind (mph) | 7 | 6 | 6 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 11 | 11 |
| Wind Dir | S | S | S | S | SE | SE | SE | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | 18 | 18 | 20 | 20 | 21 | 22 | 22 | 22 | 21 | 20 | ||||||||||||||
| Sky Cover (%) | 69 | 72 | 76 | 80 | 84 | 88 | 88 | 89 | 89 | 84 | 80 | 75 | 74 | 74 | 73 | 74 | 74 | 75 | 80 | 85 | 90 | 91 | 91 | 92 |
| Precipitation Potential (%) | 10 | 10 | 40 | 40 | 40 | 40 | 40 | 40 | 26 | 26 | 26 | 26 | 26 | 26 | 73 | 73 | 73 | 73 | 73 | 73 | 84 | 84 | 84 | 84 |
| Relative Humidity (%) | 87 | 87 | 90 | 90 | 97 | 97 | 100 | 100 | 100 | 100 | 97 | 91 | 85 | 80 | 75 | 72 | 72 | 75 | 77 | 79 | 85 | 91 | 94 | 97 |
| Rain | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc |
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