| Point Forecast: Lewistown Municipal MT 47.04N 109.45W (Elev. 4111 ft) |
Last Update: 9:57 pm MDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (MDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 68 | 66 | 65 | 63 | 61 | 60 | 59 | 58 | 62 | 68 | 71 | 78 | 81 | 83 | 86 | 87 | 87 | 88 | 86 | 85 | 82 | 76 | 70 | 66 |
| Dewpoint (°F) | 48 | 48 | 47 | 48 | 47 | 46 | 46 | 45 | 46 | 48 | 47 | 50 | 48 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 51 | 52 | 54 | 55 |
| Heat Index (°F) | 78 | 80 | 81 | 83 | 84 | 85 | 85 | 84 | 83 | 81 | 76 | |||||||||||||
| Surface Wind (mph) | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 8 | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Wind Dir | SE | SSE | SSE | SSE | SSE | S | S | SSW | SSW | WSW | W | W | W | WNW | WNW | WNW | WNW | WNW | NW | NW | NNW | N | NNE | NNE |
| Gust | 18 | 18 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | ||||||||||||||
| Sky Cover (%) | 31 | 23 | 17 | 18 | 18 | 12 | 9 | 9 | 7 | 3 | 2 | 1 | 5 | 0 | 4 | 3 | 13 | 28 | 39 | 81 | 81 | 81 | 81 | 81 |
| Precipitation Potential (%) | 3 | 3 | 3 | 2 | 2 | 3 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 4 | 5 | 6 | 11 | 16 | 17 | 58 | 58 | 58 | 58 | 58 |
| Relative Humidity (%) | 48 | 52 | 53 | 57 | 59 | 60 | 61 | 63 | 56 | 48 | 42 | 37 | 31 | 29 | 27 | 27 | 27 | 27 | 28 | 30 | 35 | 43 | 57 | 67 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (MDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 63 | 60 | 58 | 56 | 55 | 54 | 53 | 52 | 51 | 51 | 50 | 51 | 53 | 54 | 55 | 56 | 56 | 56 | 56 | 55 | 54 | 53 | 52 | 52 |
| Dewpoint (°F) | 56 | 55 | 55 | 55 | 54 | 53 | 52 | 52 | 51 | 50 | 50 | 50 | 51 | 52 | 52 | 52 | 52 | 51 | 50 | 49 | 49 | 50 | 50 | 50 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 13 | 13 | 13 | 11 | 11 | 11 | 10 | 10 |
| Wind Dir | N | N | N | N | NNE | NNE | NNE | NE | NE | NE | NE | NE | NE | NE | NE | NE | NE | NE | NE | ENE | ENE | ENE | ENE | ENE |
| Gust | 20 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 20 | 20 | 21 | 21 | 21 | 23 | 23 | 23 | 21 | 21 | 21 | 20 | 20 | |||
| Sky Cover (%) | 81 | 97 | 97 | 97 | 97 | 97 | 97 | 98 | 98 | 98 | 97 | 97 | 97 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 |
| Precipitation Potential (%) | 58 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 84 | 84 | 84 | 84 | 84 | 84 | 77 | 77 | 77 | 77 | 77 |
| Relative Humidity (%) | 79 | 85 | 90 | 94 | 97 | 98 | 98 | 98 | 98 | 99 | 98 | 96 | 94 | 92 | 90 | 88 | 86 | 83 | 80 | 80 | 83 | 88 | 93 | 95 |
| Rain | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- |
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