| Point Forecast: Decatur Airport IL 39.84N 88.88W (Elev. 650 ft) |
Last Update: 10:43 pm CDT Jul 26, 2024 |
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| Date | 07/26 | 07/27 | ||||||||||||||||||||||
| Hour (CDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 62 | 60 | 59 | 60 | 63 | 62 | 61 | 61 | 64 | 69 | 74 | 78 | 81 | 82 | 84 | 85 | 85 | 85 | 85 | 85 | 83 | 79 | 76 | 74 |
| Dewpoint (°F) | 62 | 60 | 59 | 60 | 58 | 58 | 58 | 59 | 59 | 61 | 63 | 64 | 65 | 66 | 67 | 67 | 67 | 67 | 67 | 68 | 69 | 70 | 69 | 68 |
| Heat Index (°F) | 78 | 83 | 84 | 87 | 88 | 88 | 88 | 88 | 88 | 87 | 79 | 76 | ||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 3 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 6 | 7 | 6 | 6 |
| Wind Dir | E | E | E | E | E | E | E | E | E | ESE | SE | ESE | ESE | ESE | ESE | SE | SE | SE | SE | SE | ESE | SE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 6 | 6 | 5 | 5 | 5 | 5 | 8 | 10 | 13 | 15 | 18 | 21 | 29 | 36 | 44 | 48 | 52 | 56 | 56 | 57 | 57 | 62 | 67 | 72 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 7 | 7 | 8 | 8 | 7 | 9 | 9 | 9 | 13 |
| Relative Humidity (%) | 100 | 100 | 100 | 98 | 84 | 87 | 90 | 93 | 84 | 76 | 69 | 62 | 58 | 58 | 57 | 55 | 55 | 55 | 55 | 57 | 63 | 74 | 79 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/28 | |||||||||||||||||||||||
| Hour (CDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 74 | 73 | 70 | 69 | 69 | 69 | 69 | 71 | 73 | 74 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 82 | 82 | 81 | 80 | 79 | 77 | 76 |
| Dewpoint (°F) | 69 | 69 | 68 | 68 | 69 | 69 | 69 | 70 | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 73 | 73 |
| Heat Index (°F) | 76 | 77 | 78 | 79 | 84 | 86 | 87 | 87 | 87 | 85 | 84 | 79 | 77 | 76 | ||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 |
| Wind Dir | SE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 16 | 15 | |||||||||||||||
| Sky Cover (%) | 76 | 79 | 83 | 82 | 82 | 81 | 80 | 79 | 78 | 77 | 75 | 74 | 73 | 72 | 71 | 66 | 60 | 55 | 53 | 51 | 49 | 48 | 48 | 47 |
| Precipitation Potential (%) | 13 | 13 | 22 | 22 | 22 | 23 | 23 | 23 | 43 | 43 | 43 | 48 | 48 | 48 | 59 | 59 | 59 | 59 | 59 | 59 | 35 | 35 | 35 | 35 |
| Relative Humidity (%) | 84 | 87 | 93 | 97 | 100 | 100 | 100 | 97 | 93 | 90 | 87 | 85 | 82 | 82 | 79 | 77 | 72 | 72 | 72 | 74 | 77 | 79 | 87 | 90 |
| Rain | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
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