| Point Forecast: Johnstown PA 40.32N 78.93W (Elev. 1670 ft) |
Last Update: 11:46 am EDT May 11, 2024 |
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| Date | 05/11 | 05/12 | ||||||||||||||||||||||
| Hour (EDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 58 | 59 | 59 | 60 | 57 | 56 | 57 | 55 | 52 | 51 | 50 | 49 | 48 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 46 | 47 | 49 | 51 |
| Dewpoint (°F) | 42 | 42 | 43 | 45 | 46 | 47 | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 9 | 9 | 10 | 10 | 11 | 10 | 10 | 9 | 9 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 11 | 10 | 11 | 10 | 11 |
| Wind Dir | S | S | SW | SW | SW | SW | SW | S | S | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 63 | 70 | 88 | 88 | 86 | 58 | 57 | 67 | 57 | 69 | 76 | 63 | 65 | 67 | 57 | 64 | 68 | 79 | 84 | 86 | 78 | 78 | 80 | 79 |
| Precipitation Potential (%) | 4 | 19 | 64 | 99 | 80 | 59 | 40 | 66 | 74 | 82 | 73 | 51 | 51 | 51 | 20 | 20 | 20 | 31 | 31 | 31 | 38 | 38 | 38 | 30 |
| Relative Humidity (%) | 55 | 53 | 55 | 58 | 67 | 72 | 69 | 74 | 83 | 83 | 86 | 89 | 89 | 93 | 93 | 96 | 93 | 93 | 96 | 96 | 93 | 93 | 86 | 80 |
| Rain | -- | SChc | Lkly | Ocnl | Ocnl | Lkly | Chc | Lkly | Ocnl | Ocnl | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | Lkly | Ocnl | Ocnl | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- |
| Date | 05/13 | |||||||||||||||||||||||
| Hour (EDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 53 | 55 | 57 | 59 | 59 | 61 | 59 | 59 | 57 | 53 | 51 | 49 | 48 | 48 | 47 | 46 | 46 | 45 | 47 | 49 | 51 | 56 | 62 | 67 |
| Dewpoint (°F) | 46 | 46 | 47 | 46 | 46 | 46 | 45 | 45 | 46 | 46 | 45 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 44 | 45 | 46 | 47 | 49 | 50 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 7 | 6 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 8 | 9 |
| Wind Dir | W | NW | NW | NW | NW | NW | NW | W | W | W | SW | SW | SW | S | S | S | S | S | S | S | S | S | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 77 | 70 | 57 | 57 | 57 | 57 | 43 | 32 | 24 | 28 | 21 | 13 | 14 | 14 | 15 | 22 | 30 | 37 | 38 | 38 | 39 | 31 | 23 | 15 |
| Precipitation Potential (%) | 30 | 30 | 10 | 10 | 10 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 8 | 8 | 8 | 8 |
| Relative Humidity (%) | 77 | 72 | 69 | 62 | 62 | 58 | 60 | 60 | 67 | 77 | 80 | 83 | 86 | 83 | 86 | 89 | 89 | 93 | 89 | 86 | 83 | 72 | 62 | 54 |
| Rain | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
