| Point Forecast: 9NM NNW Evanston IL 42.19N 87.77W |
Last Update: 12:36 pm CDT Aug 11, 2026 |
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| Date | 08/11 | 08/12 | ||||||||||||||||||||||
| Hour (CDT) | 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) | 72 | 72 | 72 | 74 | 74 | 74 | 74 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 70 | 70 | 71 | 72 | 73 | 73 |
| Dewpoint (°F) | 71 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 70 | 70 | 70 | 70 | 70 | 71 | 72 | 73 | 73 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 3 | 5 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 3 |
| Wind Dir | NE | E | ESE | ESE | E | SE | ESE | ESE | SE | ESE | SE | ESE | E | SE | SSE | NE | ENE | SE | S | S | S | ESE | ESE | SSE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 89 | 79 | 89 | 68 | 90 | 77 | 61 | 58 | 51 | 53 | 43 | 63 | 62 | 60 | 70 | 71 | 70 | 74 | 82 | 79 | 89 | 82 | 82 | 76 |
| Precipitation Potential (%) | 77 | 57 | 52 | 50 | 50 | 37 | 34 | 23 | 32 | 29 | 19 | 20 | 22 | 44 | 40 | 26 | 14 | 13 | 12 | 17 | 18 | 21 | 12 | 29 |
| Relative Humidity (%) | 97 | 98 | 97 | 95 | 93 | 96 | 97 | 98 | 100 | 98 | 98 | 98 | 98 | 97 | 98 | 97 | 97 | 97 | 97 | 99 | 100 | 100 | 100 | 100 |
| Rain | Ocnl | Lkly | Chc | Chc | Chc | Chc | Chc | SChc | Chc | Chc | SChc | SChc | SChc | Chc | Chc | Chc | -- | -- | -- | SChc | SChc | SChc | -- | Chc |
| Thunder | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | Chc | Chc | SChc | SChc | SChc | Chc | Chc | Chc | -- | -- | -- | SChc | SChc | SChc | -- | -- |
| Wave Height (ft) | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wave Period (sec) | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Wave Direction (°) | 120 | 120 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 120 | 130 | 130 |
| Date | 08/13 | |||||||||||||||||||||||
| Hour (CDT) | 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) | 73 | 73 | 73 | 74 | 73 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 |
| Dewpoint (°F) | 73 | 73 | 72 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 71 | 71 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 70 | 71 | 72 | 72 | 72 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 3 | 4 | 4 | 4 | 5 | 4 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 |
| Wind Dir | E | ESE | ESE | SSE | SSE | ESE | E | E | ESE | E | ENE | E | E | ENE | ENE | ENE | ENE | E | ESE | E | E | E | E | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 61 | 61 | 45 | 44 | 48 | 46 | 58 | 59 | 66 | 69 | 68 | 72 | 81 | 75 | 82 | 88 | 74 | 92 | 91 | 73 | 84 | 83 | 81 | 83 |
| Precipitation Potential (%) | 31 | 33 | 32 | 36 | 28 | 16 | 14 | 9 | 10 | 9 | 6 | 10 | 20 | 29 | 17 | 13 | 24 | 4 | 32 | 59 | 59 | 59 | 59 | 59 |
| Relative Humidity (%) | 99 | 98 | 98 | 95 | 98 | 98 | 98 | 100 | 100 | 99 | 97 | 98 | 96 | 96 | 96 | 95 | 94 | 94 | 95 | 97 | 100 | 100 | 100 | 99 |
| Rain | Chc | Chc | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | SChc | Chc | SChc | -- | SChc | -- | Chc | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Wave Height (ft) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wave Period (sec) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
| Wave Direction (°) | 120 | 120 | 120 | 120 | 120 | 110 | 110 | 100 | 100 | 90 | 80 | 60 | 40 | 30 | 30 | 30 | 30 | 30 | 30 | 20 | 20 | 30 | 30 | 30 |


