| Point Forecast: Mount Gretna PA 40.26N 76.47W (Elev. 213 m) |
Last Update: 5:01 am EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°C) | 21 | 22 | 22 | 23 | 24 | 26 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 27 | 26 | 26 | 24 | 24 | 23 | 23 | 23 | 23 | 23 |
| Dewpoint (°C) | 21 | 21 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Heat Index (°C) | 24 | 26 | 29 | 32 | 32 | 34 | 33 | 33 | 32 | 32 | 30 | 26 | 26 | 24 | 24 | |||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Wind Dir | N | N | N | N | N | N | NE | NE | E | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 71 | 70 | 65 | 61 | 54 | 43 | 31 | 22 | 29 | 19 | 30 | 33 | 45 | 40 | 42 | 40 | 36 | 39 | 27 | 39 | 47 | 57 | 65 | 64 |
| Precipitation Potential (%) | 3 | 3 | 10 | 0 | 0 | 0 | 1 | 11 | 11 | 13 | 17 | 18 | 21 | 21 | 9 | 9 | 9 | 9 | 8 | 9 | 13 | 7 | 7 | 7 |
| Relative Humidity (%) | 97 | 97 | 97 | 93 | 87 | 82 | 79 | 74 | 70 | 70 | 67 | 67 | 70 | 72 | 77 | 82 | 82 | 87 | 90 | 93 | 90 | 93 | 93 | 93 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (EDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°C) | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 |
| Dewpoint (°C) | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Heat Index (°C) | 24 | 25 | 26 | 31 | 32 | 33 | 33 | 33 | 32 | 32 | 31 | 29 | 26 | 26 | 24 | 24 | ||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 69 | 63 | 64 | 62 | 65 | 67 | 74 | 80 | 87 | 87 | 87 | 87 | 87 | 87 | 86 | 81 | 76 | 71 | 73 | 75 | 77 | 76 | 76 | 75 |
| Precipitation Potential (%) | 7 | 7 | 40 | 40 | 40 | 40 | 40 | 40 | 80 | 80 | 80 | 80 | 80 | 80 | 52 | 52 | 52 | 52 | 52 | 52 | 20 | 20 | 20 | 20 |
| Relative Humidity (%) | 93 | 93 | 90 | 90 | 88 | 82 | 79 | 80 | 80 | 80 | 77 | 79 | 82 | 82 | 85 | 85 | 90 | 90 | 93 | 93 | 93 | 93 | 93 | 93 |
| Rain | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- |
