| Point Forecast: Trenton, Mercer County Airport NJ 40.28N 74.83W (Elev. 61 m) |
Last Update: 4:07 am EDT May 19, 2026 |
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| Date | 05/19 | 05/20 | ||||||||||||||||||||||
| 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 | 24 | 26 | 29 | 31 | 32 | 34 | 35 | 35 | 35 | 34 | 33 | 32 | 31 | 29 | 28 | 27 | 27 | 26 | 26 | 24 | 23 | 23 |
| Dewpoint (°C) | 18 | 18 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 |
| Heat Index (°C) | 24 | 26 | 30 | 32 | 33 | 34 | 36 | 36 | 36 | 35 | 34 | 33 | 31 | 29 | 28 | 28 | 27 | 26 | 26 | 24 | ||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 13 | 13 | 13 | 11 | 9 | 6 | 6 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 5 |
| Wind Dir | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W | W | W | W | SW | SW | SW | SW | SW | SW | SW | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 12 | 15 | 21 | 24 | 29 | 29 | 20 | 12 | 33 | 20 | 7 | 22 | 31 | 44 | 43 | 32 | 43 | 29 | 28 | 21 | 45 | 33 | 13 | 22 |
| Precipitation Potential (%) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 4 | 3 | 8 | 14 | 10 | 13 | 5 | 5 | 5 | 5 | 4 | 4 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 81 | 79 | 74 | 64 | 55 | 47 | 42 | 37 | 35 | 34 | 34 | 35 | 37 | 41 | 46 | 51 | 55 | 58 | 56 | 58 | 58 | 62 | 62 | 64 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/21 | |||||||||||||||||||||||
| 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 | 25 | 27 | 29 | 31 | 32 | 33 | 34 | 33 | 32 | 30 | 28 | 26 | 25 | 23 | 22 | 21 | 19 | 17 | 16 | 14 | 14 | 13 |
| Dewpoint (°C) | 16 | 16 | 17 | 17 | 17 | 18 | 17 | 17 | 17 | 17 | 18 | 19 | 19 | 19 | 19 | 18 | 17 | 15 | 13 | 11 | 9 | 8 | 7 | 6 |
| Heat Index (°C) | 25 | 28 | 30 | 32 | 33 | 34 | 34 | 33 | 33 | 32 | 30 | 26 | 25 | |||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 6 | 8 | 9 | 10 | 11 | 11 | 13 | 13 | 11 | 10 | 8 | 6 | 6 | 5 | 5 | 5 | 6 | 7 | 7 | 7 | 7 |
| Wind Dir | SW | SW | SW | W | W | W | W | W | W | W | W | NW | NW | NW | N | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 23 | 16 | 17 | 13 | 5 | 10 | 11 | 55 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 74 | 74 | 76 | 77 | 79 | 79 | 79 | 79 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 32 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 22 | 22 | 22 | 22 |
| Relative Humidity (%) | 64 | 62 | 60 | 54 | 48 | 45 | 41 | 38 | 36 | 40 | 45 | 53 | 59 | 67 | 69 | 73 | 73 | 70 | 70 | 67 | 65 | 64 | 62 | 62 |
| Rain | -- | -- | -- | -- | -- | -- | -- | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- |
