| Point Forecast: Riverwoods IL 42.17N 87.89W |
Last Update: 5:36 am CDT Jul 17, 2026 |
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| Date | 07/17 | 07/18 | ||||||||||||||||||||||
| Hour (CDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 83 | 87 | 89 | 90 | 91 | 91 | 90 | 89 | 90 | 89 | 87 | 85 | 82 | 79 | 78 | 77 | 76 | 75 | 75 | 74 | 74 | 75 | 76 | 80 |
| Dewpoint (°F) | 69 | 69 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 70 | 70 | 71 | 72 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 |
| Heat Index (°F) | 87 | 91 | 94 | 96 | 96 | 96 | 96 | 94 | 94 | 94 | 92 | 90 | 86 | 83 | 78 | 77 | 76 | 75 | 75 | 75 | 77 | 84 | ||
| Surface Wind (mph) | 3 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 10 | 11 |
| Wind Dir | WSW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW | WSW | WSW | W |
| Gust | 11 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | |||||||||||||||
| Sky Cover (%) | 65 | 62 | 61 | 60 | 59 | 65 | 56 | 59 | 56 | 51 | 49 | 51 | 53 | 49 | 43 | 34 | 31 | 26 | 24 | 25 | 16 | 17 | 15 | 19 |
| Precipitation Potential (%) | 8 | 7 | 11 | 16 | 34 | 39 | 36 | 34 | 34 | 22 | 21 | 13 | 11 | 9 | 4 | 4 | 4 | 4 | 5 | 7 | 9 | 11 | 13 | 9 |
| Relative Humidity (%) | 63 | 56 | 53 | 50 | 50 | 50 | 50 | 52 | 52 | 53 | 57 | 64 | 73 | 80 | 84 | 86 | 88 | 90 | 91 | 91 | 91 | 91 | 86 | 77 |
| Rain | -- | -- | -- | SChc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | SChc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/19 | |||||||||||||||||||||||
| Hour (CDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 84 | 87 | 89 | 90 | 89 | 88 | 86 | 84 | 84 | 82 | 80 | 77 | 74 | 72 | 70 | 70 | 69 | 68 | 67 | 67 | 67 | 68 | 69 | 72 |
| Dewpoint (°F) | 73 | 73 | 73 | 73 | 73 | 72 | 71 | 70 | 69 | 68 | 67 | 67 | 66 | 65 | 64 | 64 | 63 | 63 | 62 | 62 | 63 | 63 | 63 | 64 |
| Heat Index (°F) | 90 | 95 | 98 | 99 | 97 | 94 | 92 | 89 | 87 | 85 | 82 | 77 | ||||||||||||
| Surface Wind (mph) | 11 | 13 | 13 | 13 | 13 | 13 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 5 | 5 |
| Wind Dir | W | W | WNW | WNW | NW | NNW | N | NNE | NNE | NE | NE | NE | NE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NNE | NE | NE | NE |
| Gust | 18 | 18 | 20 | 20 | 20 | 18 | 18 | 18 | 17 | 16 | 15 | 14 | 14 | 14 | 13 | |||||||||
| Sky Cover (%) | 19 | 23 | 31 | 44 | 53 | 46 | 39 | 31 | 30 | 33 | 33 | 69 | 44 | 19 | 17 | 14 | 12 | 17 | 22 | 27 | 26 | 25 | 24 | 18 |
| Precipitation Potential (%) | 5 | 8 | 10 | 7 | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 69 | 64 | 60 | 58 | 59 | 60 | 62 | 64 | 63 | 64 | 66 | 71 | 76 | 79 | 81 | 81 | 81 | 83 | 85 | 86 | 87 | 86 | 82 | 76 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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