| Point Forecast: 2 Miles NW Vermilion IL 39.59N 87.61W (Elev. 669 ft) |
Last Update: 9:46 am CDT May 17, 2026 |
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| Date | 05/17 | 05/18 | ||||||||||||||||||||||
| Hour (CDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 77 | 80 | 81 | 82 | 83 | 84 | 85 | 85 | 84 | 81 | 76 | 73 | 72 | 71 | 69 | 67 | 66 | 66 | 65 | 65 | 65 | 67 | 70 | 76 |
| Dewpoint (°F) | 66 | 66 | 66 | 66 | 66 | 65 | 65 | 64 | 64 | 62 | 61 | 59 | 58 | 58 | 57 | 57 | 57 | 57 | 57 | 57 | 58 | 58 | 61 | 63 |
| Heat Index (°F) | 77 | 82 | 83 | 84 | 85 | 86 | 87 | 86 | 85 | 82 | 76 | 76 | ||||||||||||
| Surface Wind (mph) | 14 | 15 | 16 | 17 | 17 | 18 | 17 | 17 | 16 | 14 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 11 | 13 | 14 | 16 | 17 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | 22 | 23 | 25 | 25 | 26 | 28 | 28 | 28 | 25 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 26 | 30 | 31 |
| Sky Cover (%) | 42 | 56 | 58 | 59 | 55 | 50 | 41 | 31 | 35 | 39 | 21 | 13 | 3 | 2 | 2 | 2 | 10 | 17 | 17 | 17 | 32 | 38 | 44 | 50 |
| Precipitation Potential (%) | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 4 | 5 |
| Relative Humidity (%) | 69 | 62 | 60 | 58 | 57 | 53 | 51 | 50 | 51 | 53 | 60 | 62 | 61 | 63 | 66 | 70 | 73 | 73 | 75 | 75 | 78 | 73 | 73 | 64 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/19 | |||||||||||||||||||||||
| Hour (CDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 80 | 83 | 84 | 84 | 84 | 84 | 83 | 83 | 81 | 79 | 75 | 74 | 74 | 73 | 72 | 70 | 70 | 69 | 69 | 69 | 69 | 70 | 73 | 76 |
| Dewpoint (°F) | 65 | 66 | 67 | 67 | 68 | 67 | 67 | 66 | 66 | 65 | 64 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 65 | 67 |
| Heat Index (°F) | 82 | 85 | 87 | 87 | 87 | 87 | 86 | 85 | 83 | 79 | 75 | 76 | ||||||||||||
| Surface Wind (mph) | 20 | 20 | 20 | 20 | 18 | 21 | 17 | 20 | 16 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 16 | 17 | 18 | 21 |
| Wind Dir | S | S | SSW | SSW | SSW | SW | SSW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SSW |
| Gust | 31 | 31 | 31 | 31 | 31 | 36 | 28 | 30 | 28 | 24 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 28 | 28 | 29 | 30 |
| Sky Cover (%) | 64 | 62 | 68 | 67 | 74 | 74 | 73 | 84 | 81 | 58 | 75 | 71 | 67 | 59 | 51 | 43 | 43 | 44 | 44 | 44 | 43 | 43 | 49 | 55 |
| Precipitation Potential (%) | 7 | 19 | 35 | 73 | 73 | 73 | 73 | 73 | 73 | 46 | 46 | 46 | 46 | 46 | 46 | 13 | 13 | 13 | 13 | 13 | 13 | 41 | 41 | 41 |
| Relative Humidity (%) | 60 | 57 | 57 | 57 | 59 | 57 | 59 | 57 | 60 | 62 | 69 | 69 | 69 | 71 | 73 | 78 | 78 | 81 | 81 | 81 | 81 | 81 | 76 | 74 |
| Rain | -- | SChc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc |
| Thunder | -- | SChc | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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