| Point Forecast: Philadelphia PA 39.96N 75.18W (Elev. 98 ft) |
Last Update: 4:09 pm EDT Sep 7, 2026 |
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| Date | 09/08 | 09/09 | ||||||||||||||||||||||
| Hour (EDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°F) | 66 | 65 | 64 | 63 | 63 | 63 | 65 | 67 | 73 | 77 | 80 | 81 | 82 | 83 | 83 | 83 | 82 | 80 | 79 | 75 | 73 | 72 | 70 | 69 |
| Dewpoint (°F) | 54 | 54 | 53 | 54 | 54 | 55 | 55 | 56 | 56 | 55 | 55 | 54 | 54 | 54 | 55 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 62 |
| Heat Index (°F) | 77 | 80 | 81 | 81 | 82 | 82 | 82 | 82 | 80 | 79 | 75 | |||||||||||||
| Surface Wind (mph) | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | NW | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | W | W | W | W | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 9 | 13 | 9 | 17 | 19 | 15 | 18 | 23 | 20 | 23 | 22 | 27 | 28 | 27 | 25 | 34 | 40 | 47 | 45 | 35 | 38 | 33 | 14 | 19 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 65 | 68 | 67 | 72 | 72 | 75 | 70 | 68 | 55 | 47 | 42 | 39 | 38 | 37 | 38 | 38 | 41 | 45 | 49 | 58 | 64 | 68 | 76 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/10 | |||||||||||||||||||||||
| Hour (EDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°F) | 68 | 67 | 66 | 66 | 66 | 65 | 67 | 70 | 75 | 80 | 83 | 85 | 86 | 87 | 87 | 86 | 85 | 82 | 80 | 78 | 77 | 76 | 75 | 74 |
| Dewpoint (°F) | 62 | 61 | 61 | 61 | 61 | 61 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 62 | 61 | 61 | 61 | 62 | 63 | 64 | 64 |
| Heat Index (°F) | 75 | 82 | 84 | 86 | 87 | 88 | 88 | 87 | 86 | 83 | 81 | 78 | 77 | 76 | 75 | |||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 7 | 8 | 9 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 11 | 11 | 11 | 10 |
| Wind Dir | SW | SW | SW | SW | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | S | S | S | S | S | SW |
| Gust | 20 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | ||||||||||||||||
| Sky Cover (%) | 38 | 27 | 35 | 56 | 32 | 23 | 43 | 52 | 41 | 29 | 28 | 27 | 26 | 24 | 21 | 19 | 22 | 25 | 28 | 25 | 23 | 20 | 20 | 20 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 81 | 81 | 84 | 84 | 84 | 87 | 87 | 78 | 66 | 58 | 53 | 50 | 48 | 46 | 45 | 46 | 46 | 49 | 52 | 56 | 60 | 64 | 69 | 71 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
