| Point Forecast: Afton WY 42.73N 110.93W (Elev. 6266 ft) |
Last Update: 3:32 pm MDT Aug 18, 2026 |
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| Date | 08/18 | 08/19 | ||||||||||||||||||||||
| Hour (MDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 77 | 76 | 72 | 70 | 64 | 61 | 58 | 57 | 56 | 54 | 53 | 50 | 50 | 49 | 48 | 51 | 56 | 64 | 70 | 75 | 79 | 81 | 81 | 81 |
| Dewpoint (°F) | 49 | 50 | 50 | 49 | 47 | 46 | 45 | 45 | 45 | 44 | 44 | 42 | 43 | 42 | 42 | 43 | 43 | 46 | 47 | 46 | 43 | 42 | 41 | 41 |
| Heat Index (°F) | 77 | 76 | 75 | 79 | 79 | 79 | 79 | |||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 7 | 5 | 6 | 5 | 5 | 5 | 5 | 6 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 5 | 7 | 10 | 11 | 11 |
| Wind Dir | WSW | SW | WNW | S | SE | SSE | SSE | S | SE | SSE | SSE | SSE | SSE | SE | SE | SSE | W | W | WNW | NW | WNW | WNW | WNW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 56 | 51 | 40 | 30 | 16 | 13 | 15 | 11 | 9 | 9 | 11 | 9 | 12 | 12 | 24 | 12 | 7 | 4 | 7 | 7 | 5 | 14 | 18 | 26 |
| Precipitation Potential (%) | 15 | 8 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 38 | 40 | 46 | 48 | 53 | 57 | 62 | 65 | 66 | 69 | 71 | 73 | 76 | 78 | 79 | 74 | 62 | 51 | 44 | 35 | 28 | 25 | 24 | 24 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/20 | |||||||||||||||||||||||
| Hour (MDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 82 | 80 | 77 | 73 | 65 | 63 | 60 | 58 | 57 | 55 | 54 | 52 | 52 | 51 | 50 | 53 | 59 | 66 | 74 | 81 | 85 | 87 | 87 | 87 |
| Dewpoint (°F) | 42 | 42 | 46 | 44 | 39 | 40 | 40 | 39 | 40 | 39 | 39 | 37 | 38 | 37 | 37 | 39 | 41 | 44 | 47 | 48 | 48 | 48 | 48 | 49 |
| Heat Index (°F) | 80 | 79 | 77 | 80 | 83 | 84 | 84 | 84 | ||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 8 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 5 | 5 | 5 |
| Wind Dir | WNW | WNW | NW | N | NE | E | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | ESE | SE | SSE | S | SSW | SW | WSW | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 21 | 28 | 30 | 36 | 31 | 29 | 16 | 9 | 10 | 6 | 6 | 9 | 10 | 21 | 32 | 23 | 13 | 14 | 15 | 16 | 21 | 26 | 31 | 39 |
| Precipitation Potential (%) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6 | 6 | 6 | 6 | 6 |
| Relative Humidity (%) | 24 | 26 | 33 | 36 | 39 | 43 | 48 | 50 | 52 | 54 | 56 | 57 | 59 | 59 | 61 | 58 | 52 | 45 | 38 | 32 | 28 | 26 | 26 | 27 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |


