| Point Forecast: Collinsville IL 38.68N 90W (Elev. 499 ft) |
Last Update: 9:52 pm CDT Jun 30, 2025 |
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| Date | 06/30 | 07/01 | ||||||||||||||||||||||
| Hour (CDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 73 | 72 | 72 | 72 | 71 | 71 | 70 | 70 | 70 | 70 | 72 | 75 | 78 | 81 | 82 | 83 | 84 | 84 | 85 | 85 | 84 | 83 | 80 | 77 |
| Dewpoint (°F) | 71 | 71 | 70 | 70 | 70 | 70 | 69 | 69 | 68 | 68 | 68 | 69 | 68 | 68 | 67 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Heat Index (°F) | 75 | 78 | 84 | 85 | 85 | 86 | 86 | 87 | 87 | 86 | 85 | 82 | 77 | |||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 3 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 7 | 6 | 5 |
| Wind Dir | N | N | NW | NW | NW | NW | NW | NW | NW | NW | NW | N | N | N | N | N | N | NW | NW | N | N | N | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 86 | 85 | 82 | 76 | 74 | 77 | 70 | 65 | 57 | 38 | 28 | 20 | 18 | 19 | 22 | 27 | 31 | 36 | 36 | 29 | 22 | 12 | 7 | 5 |
| Precipitation Potential (%) | 24 | 23 | 19 | 14 | 12 | 11 | 7 | 3 | 3 | 2 | 4 | 4 | 5 | 6 | 6 | 5 | 4 | 3 | 2 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 93 | 97 | 93 | 93 | 97 | 97 | 97 | 97 | 93 | 93 | 87 | 82 | 71 | 65 | 61 | 57 | 55 | 53 | 51 | 51 | 53 | 55 | 60 | 67 |
| Rain | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/02 | |||||||||||||||||||||||
| Hour (CDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 75 | 73 | 71 | 70 | 68 | 67 | 66 | 66 | 67 | 68 | 71 | 75 | 80 | 83 | 85 | 86 | 87 | 88 | 88 | 88 | 87 | 86 | 83 | 80 |
| Dewpoint (°F) | 65 | 65 | 65 | 65 | 66 | 65 | 65 | 65 | 66 | 66 | 66 | 67 | 67 | 67 | 66 | 66 | 66 | 65 | 65 | 65 | 66 | 66 | 65 | 65 |
| Heat Index (°F) | 75 | 75 | 82 | 86 | 87 | 88 | 89 | 90 | 90 | 90 | 89 | 88 | 85 | 82 | ||||||||||
| Surface Wind (mph) | 5 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 5 | 5 | 3 | 3 | 3 | 2 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 5 | 5 | 6 | 10 | 10 | 9 | 9 | 11 | 17 | 19 | 20 | 22 | 23 | 23 | 24 | 23 | 23 | 22 | 19 | 17 | 14 | 13 | 13 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Relative Humidity (%) | 71 | 76 | 81 | 84 | 93 | 93 | 97 | 97 | 97 | 93 | 84 | 76 | 65 | 59 | 53 | 51 | 50 | 47 | 47 | 47 | 50 | 51 | 55 | 60 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
