| Point Forecast: Rapid City Regional Airport SD 44.04N 103.06W (Elev. 3100 ft) |
Last Update: 8:29 pm MDT Jul 18, 2025 |
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| Date | 07/18 | 07/19 | ||||||||||||||||||||||
| Hour (MDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 75 | 71 | 70 | 67 | 66 | 65 | 65 | 64 | 63 | 63 | 63 | 64 | 67 | 69 | 71 | 73 | 75 | 79 | 81 | 82 | 82 | 83 | 81 | 78 |
| Dewpoint (°F) | 61 | 60 | 60 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 61 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 64 | 64 |
| Heat Index (°F) | 75 | 75 | 79 | 83 | 83 | 83 | 84 | 83 | 78 | |||||||||||||||
| Surface Wind (mph) | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 6 | 7 | 9 | 10 | 13 | 14 | 15 | 15 | 16 | 16 | 16 | 15 | 14 |
| Wind Dir | E | E | E | SE | E | E | NE | N | N | NE | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE |
| Gust | 17 | 20 | 22 | 24 | 25 | 26 | 26 | 26 | 26 | 26 | 24 | |||||||||||||
| Sky Cover (%) | 60 | 65 | 60 | 56 | 51 | 59 | 67 | 75 | 78 | 81 | 84 | 84 | 85 | 85 | 77 | 70 | 62 | 56 | 51 | 45 | 45 | 45 | 45 | 39 |
| Precipitation Potential (%) | 6 | 10 | 10 | 10 | 9 | 9 | 9 | 26 | 26 | 26 | 41 | 41 | 41 | 39 | 39 | 39 | 21 | 21 | 21 | 25 | 25 | 25 | 25 | 25 |
| Relative Humidity (%) | 62 | 68 | 70 | 75 | 81 | 85 | 86 | 87 | 89 | 91 | 94 | 89 | 87 | 81 | 79 | 73 | 68 | 61 | 57 | 53 | 52 | 52 | 56 | 61 |
| Rain | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc |
| Date | 07/20 | |||||||||||||||||||||||
| Hour (MDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°F) | 75 | 72 | 70 | 69 | 67 | 66 | 65 | 64 | 63 | 62 | 62 | 65 | 70 | 76 | 80 | 83 | 85 | 87 | 88 | 89 | 89 | 89 | 87 | 84 |
| Dewpoint (°F) | 65 | 64 | 64 | 64 | 64 | 64 | 63 | 62 | 61 | 60 | 60 | 61 | 61 | 62 | 62 | 62 | 61 | 60 | 59 | 58 | 58 | 58 | 59 | 60 |
| Heat Index (°F) | 75 | 76 | 81 | 84 | 85 | 87 | 87 | 88 | 88 | 88 | 86 | 84 | ||||||||||||
| Surface Wind (mph) | 14 | 13 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 9 |
| Wind Dir | SE | SE | S | S | S | S | S | S | S | S | S | SW | NW | N | N | N | N | N | NE | NE | NE | NE | NE | NE |
| Gust | 23 | 22 | 20 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 18 | 18 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | |
| Sky Cover (%) | 33 | 16 | 39 | 30 | 20 | 25 | 29 | 34 | 35 | 36 | 37 | 32 | 26 | 21 | 18 | 15 | 12 | 13 | 14 | 15 | 16 | 18 | 19 | 20 |
| Precipitation Potential (%) | 25 | 25 | 25 | 25 | 5 | 5 | 5 | 5 | 5 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 |
| Relative Humidity (%) | 72 | 77 | 81 | 84 | 90 | 93 | 93 | 93 | 93 | 93 | 93 | 87 | 73 | 62 | 54 | 49 | 45 | 40 | 38 | 35 | 35 | 35 | 39 | 44 |
| Rain | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
