| Point Forecast: St. Charles County Smartt Airport MO 38.94N 90.45W (Elev. 427 ft) |
Last Update: 4:21 pm CDT Jul 9, 2025 |
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| Date | 07/09 | 07/10 | ||||||||||||||||||||||
| Hour (CDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 86 | 86 | 86 | 85 | 83 | 79 | 77 | 75 | 74 | 73 | 72 | 72 | 72 | 71 | 70 | 72 | 76 | 80 | 83 | 85 | 87 | 88 | 90 | 90 |
| Dewpoint (°F) | 67 | 67 | 68 | 68 | 69 | 70 | 70 | 70 | 70 | 69 | 70 | 69 | 69 | 69 | 68 | 69 | 70 | 69 | 70 | 69 | 68 | 68 | 68 | 67 |
| Heat Index (°F) | 89 | 89 | 89 | 88 | 87 | 79 | 77 | 75 | 76 | 83 | 87 | 89 | 91 | 92 | 94 | 93 | ||||||||
| Surface Wind (mph) | 6 | 6 | 5 | 5 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 3 | 5 | 5 |
| Wind Dir | W | NW | W | NW | W | SW | S | S | E | S | E | S | SW | S | S | S | S | SW | SW | W | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 10 | 11 | 13 | 10 | 7 | 11 | 12 | 13 | 14 | 20 | 21 | 21 | 32 | 26 | 23 | 13 | 11 | 16 | 19 | 17 | 21 | 23 | 29 | 25 |
| Precipitation Potential (%) | 12 | 12 | 12 | 5 | 5 | 4 | 4 | 5 | 7 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 4 | 4 | 9 | 6 | 18 |
| Relative Humidity (%) | 53 | 53 | 55 | 57 | 63 | 74 | 79 | 84 | 87 | 87 | 93 | 90 | 90 | 93 | 93 | 90 | 82 | 69 | 65 | 59 | 53 | 52 | 49 | 47 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc |
| Date | 07/11 | |||||||||||||||||||||||
| Hour (CDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 90 | 90 | 88 | 88 | 85 | 82 | 79 | 78 | 77 | 76 | 75 | 74 | 74 | 74 | 74 | 75 | 78 | 81 | 84 | 86 | 88 | 90 | 91 | 92 |
| Dewpoint (°F) | 66 | 67 | 68 | 69 | 69 | 70 | 71 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 71 | 71 | 71 | 71 | 71 | 71 | 70 | 70 | 70 | 69 |
| Heat Index (°F) | 93 | 93 | 92 | 92 | 89 | 86 | 79 | 78 | 77 | 76 | 75 | 75 | 78 | 85 | 89 | 91 | 93 | 96 | 97 | 97 | ||||
| Surface Wind (mph) | 3 | 3 | 5 | 6 | 5 | 3 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 9 |
| Wind Dir | SW | S | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 26 | 22 | 24 | 19 | 16 | 15 | 23 | 20 | 21 | 24 | 28 | 32 | 36 | 35 | 35 | 34 | 33 | 32 | 31 | 30 | 30 | 29 | 30 | 31 |
| Precipitation Potential (%) | 19 | 20 | 22 | 15 | 15 | 15 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 7 | 7 | 7 | 7 | 7 | 7 | 11 | 11 | 11 |
| Relative Humidity (%) | 45 | 47 | 52 | 54 | 59 | 67 | 77 | 76 | 79 | 82 | 84 | 87 | 87 | 87 | 90 | 87 | 79 | 72 | 65 | 61 | 55 | 52 | 50 | 47 |
| Rain | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
