


Point Forecast: Decatur IL 39.84N 88.94W (Elev. 692 ft) |
Last Update: 6:41 am CDT Jul 15, 2025 |
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Date | 07/15 | 07/16 | ||||||||||||||||||||||
Hour (CDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
Temperature (°F) | 72 | 74 | 78 | 80 | 81 | 82 | 84 | 84 | 84 | 85 | 84 | 84 | 83 | 81 | 81 | 77 | 76 | 76 | 75 | 74 | 74 | 73 | 73 | 73 |
Dewpoint (°F) | 68 | 70 | 71 | 71 | 72 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 73 | 73 | 72 | 72 | 72 | 72 | 72 |
Heat Index (°F) | 78 | 83 | 86 | 88 | 91 | 91 | 91 | 93 | 91 | 91 | 89 | 86 | 86 | 77 | 76 | 76 | 75 | |||||||
Surface Wind (mph) | 3 | 3 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Wind Dir | E | ESE | ESE | SE | SE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | SSE | S | S | S | S | SSW | SSW |
Gust | ||||||||||||||||||||||||
Sky Cover (%) | 47 | 47 | 49 | 51 | 53 | 58 | 63 | 68 | 69 | 69 | 70 | 64 | 58 | 53 | 51 | 49 | 47 | 46 | 44 | 43 | 47 | 51 | 55 | 54 |
Precipitation Potential (%) | 4 | 14 | 9 | 9 | 11 | 10 | 10 | 32 | 31 | 34 | 32 | 32 | 31 | 17 | 17 | 17 | 12 | 12 | 12 | 10 | 10 | 10 | 8 | 8 |
Relative Humidity (%) | 87 | 87 | 79 | 74 | 74 | 77 | 72 | 72 | 72 | 70 | 72 | 72 | 72 | 77 | 77 | 85 | 87 | 90 | 94 | 93 | 93 | 97 | 97 | 97 |
Rain | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
Thunder | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
Date | 07/17 | |||||||||||||||||||||||
Hour (CDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
Temperature (°F) | 72 | 74 | 76 | 78 | 82 | 85 | 87 | 88 | 89 | 90 | 90 | 89 | 87 | 85 | 83 | 81 | 79 | 78 | 77 | 76 | 75 | 75 | 75 | 75 |
Dewpoint (°F) | 72 | 73 | 74 | 74 | 75 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 73 | 72 | 72 | 72 | 72 | 72 |
Heat Index (°F) | 76 | 78 | 89 | 94 | 98 | 98 | 99 | 101 | 101 | 99 | 96 | 94 | 90 | 86 | 79 | 78 | 77 | 76 | 75 | 75 | 75 | 75 | ||
Surface Wind (mph) | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SSW | SSW | SSW | SW | SW | SW | SW | SW | SW |
Gust | ||||||||||||||||||||||||
Sky Cover (%) | 54 | 54 | 52 | 35 | 20 | 19 | 21 | 22 | 25 | 29 | 32 | 35 | 39 | 42 | 41 | 40 | 39 | 44 | 50 | 55 | 53 | 51 | 49 | 49 |
Precipitation Potential (%) | 8 | 11 | 11 | 11 | 11 | 11 | 11 | 23 | 23 | 23 | 23 | 23 | 23 | 34 | 34 | 34 | 34 | 34 | 34 | 29 | 29 | 29 | 29 | 29 |
Relative Humidity (%) | 100 | 97 | 94 | 88 | 79 | 75 | 70 | 66 | 64 | 62 | 62 | 64 | 68 | 72 | 77 | 79 | 85 | 85 | 88 | 87 | 90 | 90 | 90 | 90 |
Rain | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
Thunder | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- |
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