| Point Forecast: 2 Miles ESE Herscher IL 41.04N 88.08W |
Last Update: 8:00 pm CDT Sep 8, 2026 |
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| Date | 09/08 | 09/09 | ||||||||||||||||||||||
| Hour (CDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 25 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 23 | 24 | 26 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 25 |
| Dewpoint (°C) | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 |
| Heat Index (°C) | 25 | 24 | 26 | 29 | 30 | 30 | 31 | 30 | 29 | 29 | 28 | 25 | ||||||||||||
| Surface Wind (mph) | 6 | 7 | 7 | 7 | 8 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 7 | 7 | 7 | 8 | 7 | 7 | 6 | 5 | 5 |
| Wind Dir | SSE | S | S | S | S | S | S | SSW | SSW | SSW | SW | SW | WSW | WSW | W | W | W | W | W | W | W | WNW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 28 | 30 | 32 | 39 | 46 | 54 | 54 | 54 | 55 | 58 | 61 | 64 | 64 | 65 | 65 | 67 | 70 | 72 | 70 | 68 | 66 | 66 | 65 | 65 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 5 | 5 | 5 | 40 | 42 | 44 | 45 | 38 | 31 | 22 | 22 | 23 | 22 | 18 | 15 | 14 |
| Relative Humidity (%) | 61 | 68 | 73 | 75 | 75 | 76 | 77 | 77 | 79 | 82 | 85 | 86 | 80 | 75 | 72 | 69 | 68 | 68 | 67 | 68 | 70 | 72 | 75 | 81 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/10 | |||||||||||||||||||||||
| Hour (CDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 23 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 21 | 22 | 24 | 25 | 26 | 26 | 26 | 25 | 24 | 22 |
| Dewpoint (°C) | 21 | 21 | 21 | 21 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 |
| Heat Index (°C) | 24 | 25 | 26 | 26 | 26 | 25 | 24 | |||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 |
| Wind Dir | WNW | W | W | W | W | WNW | WNW | NW | NNW | NNW | N | N | N | N | NNE | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 60 | 54 | 49 | 53 | 57 | 62 | 70 | 78 | 87 | 85 | 84 | 83 | 80 | 77 | 74 | 68 | 61 | 54 | 48 | 42 | 37 | 32 | 28 | 24 |
| Precipitation Potential (%) | 14 | 14 | 14 | 14 | 14 | 20 | 20 | 20 | 18 | 15 | 11 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 0 |
| Relative Humidity (%) | 90 | 90 | 91 | 93 | 93 | 93 | 93 | 92 | 89 | 89 | 92 | 94 | 93 | 91 | 85 | 76 | 67 | 60 | 56 | 55 | 55 | 56 | 59 | 63 |
| Rain | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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