| Point Forecast: Long Lake IL 42.38N 88.14W |
Last Update: 2:31 pm CDT Aug 13, 2026 |
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| Date | 08/13 | 08/14 | ||||||||||||||||||||||
| Hour (CDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 23 | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 21 | 22 | 23 | 24 | 24 | 24 | 24 | 25 | 26 | 25 |
| Dewpoint (°C) | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Heat Index (°C) | 24 | 24 | 24 | 24 | 25 | 26 | 25 | |||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Wind Dir | E | ESE | ESE | ESE | E | E | E | E | E | E | ENE | NE | ENE | ENE | ENE | E | E | E | E | E | E | E | E | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 92 | 84 | 76 | 71 | 67 | 62 | 76 | 89 | 88 | 87 | 89 | 92 | 83 | 80 | 77 | 78 | 79 | 74 | 68 | 59 | 60 | 62 | 60 | 58 |
| Precipitation Potential (%) | 63 | 53 | 50 | 54 | 46 | 37 | 36 | 35 | 39 | 43 | 45 | 47 | 43 | 30 | 27 | 23 | 22 | 20 | 12 | 5 | 7 | 10 | 11 | 11 |
| Relative Humidity (%) | 88 | 91 | 92 | 98 | 100 | 100 | 99 | 99 | 97 | 97 | 98 | 100 | 100 | 100 | 96 | 90 | 86 | 84 | 83 | 83 | 80 | 76 | 74 | 76 |
| Rain | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | SChc |
| Thunder | SChc | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc |
| Date | 08/15 | |||||||||||||||||||||||
| Hour (CDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 24 | 23 | 22 | 21 | 20 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 19 | 20 | 21 | 22 | 23 | 23 | 24 | 24 | 26 | 27 | 27 | 27 |
| Dewpoint (°C) | 21 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 |
| Heat Index (°C) | 25 | 24 | 24 | 26 | 29 | 31 | 31 | |||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 |
| Wind Dir | E | ENE | ENE | ENE | ENE | ENE | E | E | E | ESE | ESE | ESE | ESE | SE | SE | SE | SE | SE | SSE | SSE | SSE | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 54 | 63 | 77 | 76 | 77 | 69 | 67 | 68 | 66 | 84 | 88 | 90 | 88 | 91 | 95 | 96 | 95 | 93 | 90 | 88 | 86 | 84 | 82 |
| Precipitation Potential (%) | 20 | 28 | 30 | 32 | 35 | 39 | 48 | 57 | 60 | 64 | 62 | 61 | 70 | 80 | 80 | 80 | 80 | 80 | 80 | 60 | 60 | 60 | 60 | 60 |
| Relative Humidity (%) | 77 | 81 | 85 | 92 | 95 | 98 | 97 | 98 | 98 | 99 | 98 | 100 | 100 | 100 | 99 | 98 | 97 | 96 | 95 | 93 | 89 | 85 | 83 | 82 |
| Rain | SChc | SChc | SChc | -- | -- | Chc | Chc | SChc | SChc | SChc | Chc | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | SChc | SChc | SChc | -- | -- | Chc | Chc | SChc | SChc | SChc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc |
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