| Point Forecast: Chicago Rockford International Airport IL 42.21N 89.09W |
Last Update: 1:21 am CDT Jul 13, 2026 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (CDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°C) | 21 | 20 | 20 | 19 | 19 | 21 | 23 | 26 | 28 | 30 | 31 | 32 | 33 | 33 | 33 | 34 | 33 | 32 | 31 | 27 | 26 | 24 | 23 | 22 |
| Dewpoint (°C) | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 21 | 21 | 21 | 20 |
| Heat Index (°C) | 27 | 29 | 31 | 32 | 33 | 33 | 34 | 34 | 34 | 35 | 34 | 32 | 29 | 26 | 24 | |||||||||
| Surface Wind (mph) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 2 | 2 | 3 |
| Wind Dir | SSW | SW | SW | SW | WSW | WSW | W | WNW | NW | NW | NW | WNW | WNW | NW | NW | NW | NW | NW | WNW | WNW | WNW | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 4 | 6 | 7 | 7 | 8 | 10 | 12 | 14 | 13 | 12 | 12 | 9 | 6 | 3 | 1 | 1 | 3 | 8 | 4 | 12 | 7 | 6 | 2 |
| Precipitation Potential (%) | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 82 | 81 | 83 | 84 | 85 | 84 | 73 | 63 | 55 | 50 | 46 | 42 | 40 | 38 | 38 | 39 | 41 | 46 | 53 | 66 | 76 | 82 | 86 | 88 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (CDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°C) | 22 | 21 | 20 | 20 | 20 | 21 | 24 | 27 | 29 | 31 | 32 | 33 | 34 | 35 | 35 | 36 | 35 | 34 | 32 | 29 | 27 | 25 | 24 | 23 |
| Dewpoint (°C) | 20 | 20 | 19 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 19 | 19 | 18 | 18 | 19 | 19 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Heat Index (°C) | 24 | 28 | 32 | 33 | 34 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 34 | 32 | 28 | 25 | 24 | |||||||
| Surface Wind (mph) | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 5 | 3 | 3 | 3 | 2 | 2 |
| Wind Dir | W | WNW | WNW | NW | NW | NW | NW | NNW | NNW | NNW | NW | NW | NW | NW | NW | WNW | WNW | WNW | WNW | W | W | W | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 4 | 2 | 2 | 10 | 13 | 13 | 16 | 2 | 3 | 4 | 2 | 5 | 5 | 13 | 24 | 4 | 3 | 3 | 2 | 4 | 6 | 5 | 3 | 2 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 91 | 94 | 97 | 98 | 100 | 94 | 83 | 71 | 62 | 54 | 48 | 44 | 40 | 37 | 37 | 38 | 40 | 45 | 53 | 62 | 70 | 77 | 80 | 83 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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