| Point Forecast: Grand Island NY 43.03N 78.97W (Elev. 597 ft) |
Last Update: 3:57 am EDT Jun 17, 2026 |
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| Date | 06/17 | 06/18 | ||||||||||||||||||||||
| Hour (EDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 59 | 59 | 60 | 61 | 63 | 67 | 69 | 70 | 71 | 72 | 72 | 73 | 72 | 72 | 72 | 70 | 68 | 65 | 64 | 64 | 62 | 62 | 62 | 61 |
| Dewpoint (°F) | 54 | 54 | 55 | 56 | 58 | 58 | 58 | 58 | 58 | 59 | 58 | 58 | 57 | 56 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 60 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 13 | 13 | 14 | 14 | 14 | 13 | 11 | 9 | 7 | 8 | 8 | 8 | 8 | 11 | 15 | 18 | 21 |
| Wind Dir | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | S | SE | SE | SE | SE | SE | SE |
| Gust | 22 | 28 | 32 | 34 | ||||||||||||||||||||
| Sky Cover (%) | 82 | 83 | 79 | 58 | 37 | 38 | 33 | 37 | 30 | 18 | 30 | 45 | 55 | 71 | 81 | 75 | 83 | 86 | 93 | 95 | 93 | 95 | 99 | 88 |
| Precipitation Potential (%) | 32 | 12 | 12 | 6 | 9 | 8 | 5 | 2 | 3 | 6 | 3 | 2 | 1 | 2 | 5 | 9 | 27 | 46 | 70 | 76 | 80 | 75 | 98 | 82 |
| Relative Humidity (%) | 85 | 85 | 83 | 84 | 82 | 73 | 68 | 66 | 64 | 63 | 61 | 58 | 59 | 57 | 58 | 61 | 68 | 75 | 80 | 81 | 87 | 90 | 92 | 98 |
| Rain | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc |
| Date | 06/19 | |||||||||||||||||||||||
| Hour (EDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 63 | 63 | 64 | 65 | 67 | 69 | 70 | 71 | 71 | 72 | 72 | 71 | 70 | 70 | 69 | 69 | 67 | 64 | 63 | 62 | 61 | 60 | 59 | 58 |
| Dewpoint (°F) | 61 | 61 | 62 | 62 | 64 | 64 | 63 | 62 | 62 | 62 | 61 | 61 | 60 | 59 | 59 | 58 | 58 | 58 | 57 | 56 | 56 | 56 | 55 | 55 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 23 | 23 | 24 | 23 | 23 | 20 | 21 | 21 | 22 | 22 | 23 | 22 | 21 | 20 | 17 | 16 | 15 | 14 | 13 | 10 | 9 | 9 | 9 | 9 |
| Wind Dir | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 37 | 38 | 38 | 39 | 39 | 41 | 43 | 45 | 46 | 46 | 45 | 43 | 40 | 37 | 32 | 28 | 22 | 22 | 21 | 21 | 21 | |||
| Sky Cover (%) | 81 | 73 | 74 | 65 | 78 | 78 | 78 | 78 | 78 | 78 | 59 | 64 | 59 | 61 | 59 | 59 | 76 | 61 | 49 | 37 | 32 | 28 | 23 | 23 |
| Precipitation Potential (%) | 60 | 50 | 53 | 45 | 66 | 66 | 66 | 66 | 66 | 66 | 39 | 39 | 39 | 39 | 39 | 39 | 6 | 6 | 6 | 6 | 6 | 6 | 0 | 0 |
| Relative Humidity (%) | 94 | 93 | 93 | 91 | 89 | 84 | 79 | 75 | 73 | 72 | 69 | 71 | 71 | 69 | 70 | 69 | 73 | 78 | 81 | 82 | 84 | 86 | 88 | 90 |
| Rain | Lkly | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
