| Point Forecast: Dekalb IL 41.9N 88.76W |
Last Update: 4:57 pm CDT May 17, 2024 |
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| Date | 05/17 | 05/18 | ||||||||||||||||||||||
| Hour (CDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 76 | 73 | 69 | 66 | 63 | 62 | 60 | 59 | 58 | 57 | 57 | 58 | 61 | 66 | 72 | 77 | 80 | 82 | 83 | 84 | 85 | 85 | 85 | 83 |
| Dewpoint (°F) | 46 | 46 | 46 | 48 | 49 | 51 | 53 | 54 | 54 | 54 | 55 | 56 | 57 | 58 | 60 | 61 | 59 | 57 | 56 | 54 | 54 | 54 | 53 | 54 |
| Heat Index (°F) | 76 | 77 | 81 | 82 | 82 | 83 | 83 | 83 | 83 | 82 | ||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 9 |
| Wind Dir | S | S | SSE | SE | SE | SE | SE | SE | SSE | SSE | SSE | SSE | S | S | S | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW |
| Gust | 14 | 15 | 15 | 15 | 14 | |||||||||||||||||||
| Sky Cover (%) | 15 | 11 | 7 | 3 | 4 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 13 | 9 | 4 | 7 | 9 | 12 | 12 | 13 | 14 | 11 | 7 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 4 | 5 | 5 | 5 |
| Relative Humidity (%) | 34 | 38 | 44 | 52 | 60 | 67 | 78 | 83 | 86 | 90 | 93 | 93 | 87 | 75 | 66 | 58 | 49 | 43 | 40 | 36 | 35 | 35 | 33 | 37 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/19 | |||||||||||||||||||||||
| Hour (CDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 81 | 78 | 75 | 73 | 72 | 71 | 69 | 68 | 67 | 66 | 65 | 65 | 66 | 69 | 73 | 76 | 79 | 81 | 83 | 84 | 86 | 86 | 85 | 83 |
| Dewpoint (°F) | 54 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 59 | 59 | 58 | 58 | 57 | 56 | 55 | 55 | 55 | 55 | 56 | 55 | 55 | 55 | 56 | 56 |
| Heat Index (°F) | 81 | 78 | 75 | 76 | 79 | 81 | 82 | 83 | 84 | 84 | 84 | 82 | ||||||||||||
| Surface Wind (mph) | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 7 |
| Wind Dir | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SW | WSW | W | WNW | NNW | N | N | NE | NE | ENE | E | ESE | ESE | SE | SSE | SE | ESE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 4 | 9 | 15 | 20 | 21 | 21 | 22 | 21 | 20 | 19 | 17 | 14 | 12 | 14 | 16 | 18 | 23 | 28 | 34 | 37 | 40 | 43 | 49 | 56 |
| Precipitation Potential (%) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 2 | 2 | 2 | 2 | 2 | 2 | 18 | 18 | 18 | 18 | 18 | 18 |
| Relative Humidity (%) | 39 | 45 | 50 | 55 | 57 | 61 | 66 | 70 | 75 | 78 | 78 | 78 | 73 | 63 | 53 | 48 | 44 | 41 | 40 | 37 | 35 | 35 | 37 | 40 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc |
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