| Point Forecast: Irene SD 43.08N 97.16W (Elev. 1401 ft) |
Last Update: 1:56 pm CDT May 17, 2026 |
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| Date | 05/17 | 05/18 | ||||||||||||||||||||||
| 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) | 77 | 74 | 72 | 69 | 67 | 63 | 60 | 58 | 56 | 54 | 53 | 52 | 50 | 49 | 49 | 48 | 49 | 50 | 53 | 54 | 55 | 56 | 57 | 57 |
| Dewpoint (°F) | 64 | 64 | 63 | 61 | 58 | 56 | 54 | 53 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 45 | 46 | 47 | 46 | 47 | 47 | 47 | 48 | 49 |
| Heat Index (°F) | 77 | |||||||||||||||||||||||
| Surface Wind (mph) | 15 | 17 | 18 | 20 | 21 | 21 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 17 | 18 | 17 | 17 | 17 | 16 | 17 | 17 | 16 | 16 | 16 |
| Wind Dir | SE | S | NW | NW | NNW | NNW | NW | WNW | NW | NW | NW | NW | NW | NNW | NNW | NNW | NNW | NNW | N | N | N | N | NNE | NNE |
| Gust | 25 | 28 | 26 | 28 | 29 | 29 | 30 | 29 | 28 | 28 | 28 | 26 | 26 | 25 | 25 | 24 | 25 | 24 | 23 | 24 | 24 | 25 | 25 | 25 |
| Sky Cover (%) | 82 | 83 | 81 | 95 | 99 | 99 | 97 | 93 | 90 | 92 | 90 | 88 | 92 | 94 | 92 | 99 | 97 | 88 | 85 | 91 | 92 | 94 | 87 | 89 |
| Precipitation Potential (%) | 46 | 83 | 94 | 70 | 61 | 56 | 36 | 33 | 33 | 23 | 14 | 13 | 13 | 11 | 9 | 11 | 13 | 11 | 18 | 30 | 34 | 53 | 71 | 70 |
| Relative Humidity (%) | 64 | 71 | 73 | 76 | 73 | 78 | 81 | 83 | 83 | 86 | 86 | 86 | 89 | 88 | 88 | 90 | 88 | 89 | 77 | 77 | 74 | 73 | 73 | 73 |
| Rain | Chc | Ocnl | Ocnl | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Lkly | Lkly |
| Thunder | Chc | Ocnl | Ocnl | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc |
| Date | 05/19 | |||||||||||||||||||||||
| 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) | 58 | 57 | 57 | 56 | 54 | 52 | 51 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 43 | 46 | 48 | 50 | 52 | 53 | 54 | 55 |
| Dewpoint (°F) | 49 | 50 | 49 | 47 | 47 | 46 | 45 | 45 | 44 | 43 | 43 | 42 | 41 | 41 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 38 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 16 | 17 | 18 | 18 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 21 | 23 | 23 | 23 | 23 | 22 | 22 | 21 | 21 |
| Wind Dir | NNE | N | N | N | N | N | NNW | NNW | NNW | NNW | NNW | NNW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NNW |
| Gust | 25 | 26 | 28 | 26 | 30 | 31 | 32 | 32 | 31 | 31 | 32 | 32 | 33 | 32 | 31 | 31 | 32 | 33 | 33 | 33 | 33 | 32 | 31 | 30 |
| Sky Cover (%) | 86 | 91 | 93 | 96 | 98 | 98 | 98 | 97 | 95 | 97 | 98 | 96 | 84 | 97 | 93 | 97 | 100 | 85 | 69 | 65 | 60 | 56 | 52 | 47 |
| Precipitation Potential (%) | 69 | 66 | 63 | 78 | 78 | 78 | 78 | 78 | 78 | 10 | 10 | 10 | 10 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 71 | 76 | 75 | 72 | 77 | 80 | 80 | 86 | 86 | 86 | 89 | 89 | 89 | 92 | 88 | 92 | 85 | 78 | 71 | 66 | 62 | 59 | 55 | 53 |
| Rain | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |


