| Point Forecast: Greenbelt MD 38.99N 76.89W (Elev. 102 ft) |
Last Update: 12:21 am EDT Jul 16, 2025 |
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| Date | 07/16 | 07/17 | ||||||||||||||||||||||
| Hour (EDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 77 | 75 | 74 | 75 | 75 | 74 | 75 | 76 | 79 | 82 | 83 | 85 | 87 | 87 | 89 | 88 | 87 | 85 | 84 | 82 | 81 | 79 | 78 | 78 |
| Dewpoint (°F) | 74 | 74 | 74 | 74 | 73 | 74 | 75 | 76 | 76 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 76 | 76 | 76 | 76 |
| Heat Index (°F) | 77 | 75 | 75 | 75 | 75 | 76 | 79 | 90 | 91 | 94 | 98 | 98 | 100 | 99 | 98 | 94 | 93 | 89 | 87 | 79 | 78 | 78 | ||
| Surface Wind (mph) | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 6 | 7 | 7 | 8 | 8 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 5 | 5 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 66 | 63 | 63 | 72 | 67 | 60 | 53 | 48 | 63 | 69 | 81 | 61 | 71 | 67 | 70 | 80 | 83 | 79 | 79 | 74 | 70 | 66 | 68 |
| Precipitation Potential (%) | 9 | 9 | 6 | 8 | 7 | 8 | 9 | 7 | 9 | 18 | 22 | 31 | 36 | 27 | 34 | 54 | 61 | 68 | 67 | 23 | 23 | 23 | 23 | 23 |
| Relative Humidity (%) | 90 | 97 | 100 | 97 | 94 | 100 | 100 | 100 | 91 | 85 | 80 | 75 | 70 | 70 | 66 | 68 | 70 | 75 | 77 | 79 | 85 | 91 | 94 | 94 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc |
| Date | 07/18 | |||||||||||||||||||||||
| Hour (EDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 78 | 78 | 78 | 77 | 77 | 76 | 77 | 79 | 81 | 84 | 87 | 89 | 91 | 92 | 92 | 92 | 91 | 90 | 89 | 87 | 85 | 83 | 82 | 81 |
| Dewpoint (°F) | 75 | 75 | 75 | 74 | 74 | 75 | 75 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 76 | 76 | 76 |
| Heat Index (°F) | 78 | 78 | 78 | 77 | 77 | 76 | 77 | 79 | 87 | 92 | 96 | 99 | 101 | 102 | 102 | 102 | 101 | 99 | 98 | 96 | 94 | 91 | 89 | 87 |
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 71 | 73 | 71 | 68 | 66 | 58 | 49 | 41 | 39 | 36 | 34 | 42 | 49 | 57 | 57 | 57 | 57 | 57 | 57 | 37 | 35 | 32 | 30 | 35 |
| Precipitation Potential (%) | 23 | 6 | 6 | 6 | 6 | 6 | 6 | 10 | 10 | 10 | 10 | 10 | 10 | 35 | 35 | 35 | 35 | 35 | 35 | 11 | 11 | 11 | 11 | 11 |
| Relative Humidity (%) | 91 | 91 | 91 | 90 | 90 | 97 | 94 | 91 | 85 | 74 | 68 | 64 | 58 | 56 | 56 | 56 | 58 | 60 | 61 | 68 | 72 | 80 | 82 | 85 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | -- | -- | -- | -- | -- |
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