| Point Forecast: Saint Peters MO 38.78N 90.59W (Elev. 492 ft) |
Last Update: 9:46 pm CDT Aug 12, 2026 |
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| Date | 08/12 | 08/13 | ||||||||||||||||||||||
| 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) | 77 | 77 | 78 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 78 | 81 | 86 | 88 | 91 | 93 | 94 | 96 | 97 | 95 | 95 | 93 | 90 | 88 |
| Dewpoint (°F) | 72 | 73 | 74 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 74 | 75 | 75 | 76 | 76 | 75 | 75 | 76 | 76 | 77 | 76 | 75 |
| Heat Index (°F) | 77 | 77 | 78 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 78 | 86 | 94 | 98 | 102 | 106 | 107 | 109 | 110 | 109 | 109 | 107 | 102 | 98 |
| Surface Wind (mph) | 3 | 5 | 5 | 5 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 5 | 5 | 5 | 6 | 6 | 5 | 6 | 6 | 5 | 5 | 6 | 6 |
| Wind Dir | NE | E | SE | S | S | S | E | E | SE | SE | SE | S | SW | W | W | SW | S | S | S | S | S | SE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 60 | 57 | 43 | 54 | 52 | 54 | 59 | 54 | 68 | 62 | 61 | 51 | 47 | 52 | 34 | 39 | 39 | 42 | 49 | 55 | 38 | 39 | 23 | 25 |
| Precipitation Potential (%) | 9 | 7 | 10 | 14 | 16 | 17 | 23 | 29 | 30 | 31 | 25 | 19 | 15 | 11 | 9 | 7 | 13 | 19 | 19 | 20 | 20 | 21 | 18 | 16 |
| Relative Humidity (%) | 85 | 88 | 88 | 88 | 88 | 87 | 87 | 87 | 87 | 87 | 85 | 77 | 68 | 66 | 60 | 58 | 56 | 51 | 50 | 55 | 55 | 60 | 64 | 66 |
| Rain | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Date | 08/14 | |||||||||||||||||||||||
| 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) | 86 | 85 | 84 | 83 | 83 | 82 | 80 | 79 | 79 | 78 | 81 | 84 | 87 | 90 | 92 | 94 | 95 | 96 | 97 | 96 | 95 | 94 | 92 | 89 |
| Dewpoint (°F) | 74 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 70 | 71 | 72 | 73 | 74 | 75 | 75 | 75 | 75 | 74 | 74 | 75 | 75 | 76 | 76 | 75 |
| Heat Index (°F) | 94 | 92 | 90 | 88 | 88 | 87 | 83 | 79 | 79 | 78 | 85 | 90 | 95 | 101 | 103 | 106 | 107 | 107 | 109 | 109 | 107 | 107 | 105 | 99 |
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 3 | 3 |
| Wind Dir | SE | S | S | S | S | S | S | SW | SW | S | SW | SW | SW | SW | SW | SW | SW | S | S | S | S | S | S | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 33 | 30 | 7 | 12 | 8 | 28 | 55 | 51 | 41 | 58 | 23 | 28 | 33 | 30 | 27 | 24 | 24 | 23 | 23 | 21 | 18 | 16 | 19 | 22 |
| Precipitation Potential (%) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 10 | 8 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 68 | 67 | 70 | 70 | 70 | 72 | 74 | 77 | 74 | 79 | 74 | 70 | 65 | 62 | 58 | 54 | 53 | 49 | 48 | 51 | 53 | 56 | 60 | 64 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
