| Point Forecast: Iona SD 43.54N 99.44W (Elev. 1923 ft) |
Last Update: 6:49 pm CDT Jul 10, 2025 |
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| Date | 07/10 | 07/11 | ||||||||||||||||||||||
| Hour (CDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 80 | 76 | 73 | 73 | 74 | 72 | 71 | 70 | 68 | 68 | 67 | 66 | 68 | 70 | 73 | 79 | 82 | 85 | 86 | 87 | 87 | 84 | 82 | 81 |
| Dewpoint (°F) | 65 | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 66 | 66 | 66 | 65 | 64 | 62 | 62 | 61 | 60 | 59 | 58 |
| Heat Index (°F) | 82 | 76 | 79 | 84 | 86 | 86 | 87 | 87 | 84 | 82 | 81 | |||||||||||||
| Surface Wind (mph) | 8 | 8 | 7 | 8 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 14 | 16 | 18 | 21 | 22 | 22 | 22 | 23 | 22 |
| Wind Dir | E | SE | SE | SSE | SSE | SE | SSE | S | S | SW | WSW | WSW | W | W | WNW | NW | NNW | NNW | N | N | NNW | NNW | NNW | NNW |
| Gust | 24 | 26 | 29 | 30 | 32 | 32 | 32 | 31 | ||||||||||||||||
| Sky Cover (%) | 68 | 55 | 52 | 33 | 32 | 27 | 25 | 27 | 28 | 14 | 28 | 34 | 48 | 33 | 24 | 16 | 21 | 26 | 33 | 44 | 34 | 49 | 27 | 32 |
| Precipitation Potential (%) | 16 | 14 | 14 | 8 | 6 | 5 | 4 | 3 | 3 | 3 | 2 | 3 | 3 | 2 | 2 | 3 | 9 | 14 | 20 | 23 | 30 | 33 | 33 | 33 |
| Relative Humidity (%) | 60 | 71 | 79 | 80 | 76 | 79 | 81 | 84 | 90 | 90 | 93 | 93 | 87 | 87 | 79 | 64 | 56 | 50 | 45 | 43 | 42 | 44 | 46 | 46 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc |
| Date | 07/12 | |||||||||||||||||||||||
| Hour (CDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 77 | 74 | 71 | 68 | 65 | 64 | 64 | 63 | 61 | 60 | 58 | 57 | 58 | 61 | 66 | 70 | 73 | 76 | 78 | 80 | 82 | 83 | 84 | 84 |
| Dewpoint (°F) | 58 | 59 | 56 | 56 | 55 | 54 | 54 | 53 | 53 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 45 | 46 |
| Heat Index (°F) | 77 | 76 | 78 | 79 | 80 | 81 | 82 | 82 | ||||||||||||||||
| Surface Wind (mph) | 22 | 18 | 16 | 15 | 14 | 13 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 8 |
| Wind Dir | NNW | NNW | NNW | NNW | NNW | NW | NW | NW | WNW | WNW | WNW | W | W | WNW | WNW | NW | NW | NW | NW | NW | NW | WNW | W | WSW |
| Gust | 30 | 28 | 25 | |||||||||||||||||||||
| Sky Cover (%) | 32 | 54 | 60 | 60 | 62 | 52 | 41 | 31 | 22 | 12 | 16 | 19 | 23 | 16 | 10 | 3 | 4 | 5 | 6 | 5 | 3 | 2 | 6 | 9 |
| Precipitation Potential (%) | 14 | 14 | 14 | 14 | 14 | 14 | 4 | 4 | 4 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 52 | 59 | 59 | 65 | 70 | 70 | 70 | 70 | 75 | 75 | 80 | 80 | 77 | 70 | 58 | 51 | 44 | 39 | 35 | 31 | 28 | 26 | 26 | 27 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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