| Point Forecast: Long Lake IL 42.38N 88.14W |
Last Update: 9:16 pm CDT May 20, 2026 |
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| Date | 05/21 | |||||||||||||||||||||||
| Hour (CDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 43 | 43 | 43 | 43 | 43 | 43 | 44 | 47 | 50 | 52 | 54 | 54 | 55 | 56 | 56 | 56 | 57 | 56 | 55 | 53 | 50 | 48 | 46 | 46 |
| Dewpoint (°F) | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 38 | 39 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 40 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 13 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 15 | 14 | 13 | 11 | 11 | 10 | 10 | 9 |
| Wind Dir | NE | NE | NE | NE | NE | NE | ENE | ENE | ENE | E | E | E | E | ENE | ENE | ENE | ENE | ENE | NE | NE | NE | NE | NE | NE |
| Gust | 15 | 15 | 15 | 15 | 15 | 18 | 18 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 23 | 22 | 21 | 18 | 18 | 15 | ||
| Sky Cover (%) | 41 | 39 | 37 | 35 | 36 | 37 | 38 | 47 | 55 | 64 | 74 | 76 | 78 | 80 | 72 | 65 | 57 | 56 | 55 | 54 | 50 | 46 | 42 | 46 |
| Precipitation Potential (%) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 12 | 12 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 73 | 75 | 76 | 75 | 75 | 76 | 75 | 70 | 66 | 63 | 60 | 60 | 57 | 54 | 53 | 52 | 50 | 51 | 53 | 57 | 63 | 69 | 75 | 79 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/22 | |||||||||||||||||||||||
| Hour (CDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 46 | 46 | 45 | 45 | 45 | 45 | 46 | 48 | 50 | 52 | 54 | 55 | 57 | 58 | 59 | 60 | 60 | 61 | 60 | 60 | 58 | 57 | 55 | 54 |
| Dewpoint (°F) | 41 | 41 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 43 | 44 | 45 | 47 | 48 | 49 | 50 | 50 | 51 | 52 | 52 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 14 |
| Wind Dir | ENE | ENE | ENE | ENE | ENE | ENE | E | E | E | E | E | E | ENE | ENE | ENE | ENE | ENE | ENE | ENE | ENE | ENE | E | E | E |
| Gust | 21 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 23 | 21 | |||||||
| Sky Cover (%) | 49 | 64 | 49 | 45 | 64 | 51 | 59 | 67 | 41 | 61 | 80 | 77 | 74 | 71 | 75 | 79 | 83 | 85 | 87 | 90 | 91 | 93 | 94 | 94 |
| Precipitation Potential (%) | 0 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 25 | 25 | 25 | 25 | 25 | 25 | 79 | 79 | 79 | 79 | 79 |
| Relative Humidity (%) | 82 | 84 | 86 | 89 | 90 | 86 | 81 | 77 | 71 | 66 | 62 | 59 | 58 | 58 | 58 | 59 | 60 | 62 | 65 | 69 | 74 | 79 | 87 | 92 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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