| Point Forecast: 4 Miles ESE Petersburg IL 39.98N 89.8W (Elev. 183 m) |
Last Update: 5:27 am CDT Jun 21, 2024 |
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| Date | 06/21 | 06/22 | ||||||||||||||||||||||
| Hour (CDT) | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 |
| Temperature (°C) | 21 | 21 | 23 | 26 | 28 | 30 | 31 | 32 | 33 | 33 | 34 | 34 | 34 | 33 | 33 | 31 | 28 | 26 | 25 | 24 | 24 | 23 | 24 | 23 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Heat Index (°C) | 26 | 30 | 32 | 33 | 34 | 34 | 35 | 36 | 35 | 35 | 35 | 34 | 32 | 29 | 26 | 25 | 24 | 24 | 24 | |||||
| Surface Wind (mph) | 3 | 3 | 3 | 5 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 |
| Wind Dir | S | S | SSW | SSW | SW | SW | SW | SW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | S | S | S | S | S | S | SSW | SSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 3 | 3 | 2 | 2 | 7 | 11 | 16 | 19 | 23 | 26 | 26 | 26 | 26 | 27 | 26 | 25 | 24 | 28 | 32 | 36 | 41 | 46 | 51 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Relative Humidity (%) | 87 | 87 | 76 | 67 | 61 | 55 | 52 | 47 | 45 | 43 | 41 | 40 | 40 | 43 | 44 | 50 | 61 | 67 | 71 | 71 | 76 | 76 | 74 | 76 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/23 | |||||||||||||||||||||||
| Hour (CDT) | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 |
| Temperature (°C) | 23 | 23 | 24 | 27 | 29 | 31 | 32 | 33 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 31 | 29 | 28 | 27 | 25 | 24 | 23 | 23 | 22 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 21 |
| Heat Index (°C) | 24 | 28 | 31 | 33 | 34 | 34 | 36 | 36 | 36 | 36 | 35 | 35 | 34 | 32 | 31 | 29 | 28 | 25 | 24 | |||||
| Surface Wind (mph) | 7 | 8 | 8 | 10 | 11 | 13 | 14 | 14 | 16 | 15 | 15 | 15 | 15 | 14 | 13 | 11 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 8 |
| Wind Dir | SSW | SSW | SSW | SSW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SSW | SSW | SSW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | 24 | 24 | ||||||||||||||||||||||
| Sky Cover (%) | 48 | 45 | 42 | 37 | 33 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 37 | 40 | 44 | 52 | 54 | 55 | 62 | 69 | 76 | 75 | 73 | 72 |
| Precipitation Potential (%) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 7 | 7 | 7 | 7 | 7 | 7 | 56 | 56 | 56 | 56 | 56 | 56 | 77 | 77 | 77 | 77 |
| Relative Humidity (%) | 79 | 79 | 74 | 63 | 59 | 53 | 49 | 45 | 43 | 41 | 40 | 40 | 40 | 43 | 44 | 48 | 55 | 61 | 65 | 74 | 79 | 84 | 87 | 93 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc |
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