| Point Forecast: De Kalb IL 41.92N 88.76W |
Last Update: 9:07 am CDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| 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) | 76 | 79 | 82 | 83 | 84 | 86 | 87 | 87 | 88 | 85 | 84 | 80 | 77 | 76 | 74 | 74 | 73 | 72 | 72 | 72 | 72 | 72 | 73 | 75 |
| Dewpoint (°F) | 68 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 70 | 71 | 72 | 72 | 71 | 71 | 71 | 71 | 70 | 70 | 70 | 71 | 72 | 73 |
| Heat Index (°F) | 76 | 82 | 85 | 87 | 88 | 90 | 91 | 91 | 92 | 90 | 88 | 83 | 77 | 76 | 75 | |||||||||
| Surface Wind (mph) | 5 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 3 |
| Wind Dir | SSE | S | S | S | S | S | S | S | S | S | S | S | S | SSE | S | S | S | S | S | S | S | SSW | SSW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 3 | 10 | 17 | 24 | 31 | 17 | 30 | 31 | 15 | 27 | 26 | 15 | 21 | 43 | 15 | 19 | 23 | 30 | 41 | 63 | 69 | 69 | 71 | 64 |
| Precipitation Potential (%) | 0 | 0 | 0 | 2 | 14 | 14 | 14 | 10 | 10 | 10 | 11 | 8 | 7 | 6 | 6 | 6 | 4 | 4 | 4 | 3 | 3 | 3 | 7 | 7 |
| Relative Humidity (%) | 76 | 70 | 66 | 62 | 60 | 57 | 55 | 54 | 54 | 60 | 64 | 75 | 83 | 87 | 90 | 92 | 93 | 95 | 96 | 96 | 96 | 97 | 97 | 94 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| 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) | 77 | 80 | 83 | 86 | 87 | 88 | 88 | 88 | 86 | 84 | 81 | 78 | 75 | 73 | 72 | 71 | 71 | 70 | 69 | 68 | 67 | 66 | 66 | 67 |
| Dewpoint (°F) | 74 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 68 | 67 | 66 | 66 | 66 |
| Heat Index (°F) | 77 | 86 | 91 | 94 | 95 | 96 | 96 | 95 | 93 | 90 | 85 | 78 | 75 | |||||||||||
| Surface Wind (mph) | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 9 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW | W | W | W | W | WNW | WNW | NW |
| Gust | 13 | 14 | 14 | 15 | 14 | 13 | 11 | 11 | 13 | 13 | 13 | 13 | 14 | 14 | ||||||||||
| Sky Cover (%) | 64 | 49 | 34 | 36 | 37 | 43 | 48 | 54 | 57 | 60 | 63 | 65 | 66 | 68 | 72 | 76 | 80 | 81 | 83 | 84 | 88 | 91 | 95 | 91 |
| Precipitation Potential (%) | 7 | 7 | 7 | 7 | 48 | 48 | 48 | 48 | 48 | 48 | 64 | 64 | 64 | 64 | 64 | 64 | 54 | 54 | 54 | 54 | 54 | 54 | 27 | 27 |
| Relative Humidity (%) | 89 | 83 | 75 | 69 | 65 | 62 | 61 | 62 | 64 | 69 | 75 | 82 | 88 | 93 | 96 | 97 | 98 | 99 | 100 | 100 | 100 | 100 | 100 | 98 |
| Rain | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
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