| Point Forecast: Philadelphia International Airport PA 39.88N 75.23W (Elev. 3 ft) |
Last Update: 4:13 pm EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 78 | 77 | 77 | 77 | 76 | 75 | 75 | 75 | 76 | 78 | 80 | 82 | 84 | 86 | 86 | 86 | 87 | 86 | 86 | 84 | 83 | 82 | 79 | 78 |
| Dewpoint (°F) | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 77 | 77 | 76 | 76 | 76 |
| Heat Index (°F) | 78 | 77 | 77 | 77 | 76 | 75 | 75 | 75 | 76 | 78 | 86 | 89 | 93 | 96 | 96 | 96 | 98 | 96 | 96 | 94 | 92 | 89 | 79 | 78 |
| Surface Wind (mph) | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 6 | 6 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 8 |
| Wind Dir | S | S | SW | SW | SW | SW | SW | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 40 | 40 | 47 | 48 | 54 | 60 | 66 | 67 | 63 | 64 | 63 | 54 | 56 | 61 | 69 | 68 | 71 | 73 | 72 | 75 | 75 | 82 | 83 | 85 |
| Precipitation Potential (%) | 2 | 2 | 2 | 2 | 2 | 4 | 5 | 4 | 3 | 3 | 3 | 6 | 16 | 27 | 37 | 42 | 52 | 57 | 59 | 59 | 71 | 49 | 49 | 49 |
| Relative Humidity (%) | 91 | 94 | 94 | 94 | 97 | 97 | 97 | 97 | 97 | 94 | 88 | 82 | 77 | 72 | 72 | 72 | 70 | 72 | 72 | 80 | 82 | 82 | 91 | 94 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Chc | Chc | Chc |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 78 | 79 | 81 | 83 | 85 | 86 | 87 | 88 | 89 | 90 | 90 | 89 | 88 | 86 | 85 | 83 |
| Dewpoint (°F) | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 75 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 |
| Heat Index (°F) | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 78 | 79 | 87 | 91 | 94 | 96 | 98 | 99 | 100 | 102 | 102 | 100 | 99 | 96 | 94 | 90 |
| Surface Wind (mph) | 9 | 7 | 7 | 6 | 6 | 6 | 5 | 6 | 8 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 5 |
| Wind Dir | SW | SW | SW | SW | SW | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 86 | 84 | 81 | 78 | 77 | 76 | 76 | 75 | 73 | 67 | 63 | 59 | 55 | 58 | 61 | 64 | 64 | 64 | 64 | 64 | 64 | 31 | 33 | 35 |
| Precipitation Potential (%) | 49 | 49 | 49 | 28 | 28 | 28 | 28 | 28 | 28 | 30 | 30 | 30 | 30 | 30 | 30 | 45 | 45 | 45 | 45 | 45 | 45 | 14 | 14 | 14 |
| Relative Humidity (%) | 91 | 91 | 94 | 94 | 94 | 90 | 94 | 94 | 91 | 91 | 85 | 80 | 75 | 72 | 70 | 68 | 66 | 64 | 64 | 66 | 68 | 72 | 75 | 77 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- |
| Thunder | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- |
