| Point Forecast: Lewistown MT 47.07N 109.43W (Elev. 3898 ft) |
Last Update: 10:25 am MDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (MDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 85 | 86 | 87 | 89 | 87 | 87 | 86 | 82 | 77 | 72 | 69 | 67 | 65 | 63 | 61 | 60 | 60 | 58 | 62 | 67 | 72 | 79 | 83 | 85 |
| Dewpoint (°F) | 44 | 42 | 40 | 40 | 40 | 41 | 45 | 46 | 48 | 48 | 48 | 49 | 48 | 48 | 48 | 48 | 48 | 46 | 49 | 50 | 50 | 50 | 49 | 49 |
| Heat Index (°F) | 82 | 83 | 84 | 85 | 84 | 84 | 83 | 80 | 77 | 79 | 81 | 82 | ||||||||||||
| Surface Wind (mph) | 9 | 9 | 10 | 9 | 9 | 9 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 5 | 5 | 6 | 7 | 9 | 11 |
| Wind Dir | WNW | NW | NW | NW | NW | NNW | NNW | N | E | SE | SE | SE | SE | SSE | SSW | S | S | S | SW | WSW | W | WNW | WNW | NW |
| Gust | 18 | 18 | 18 | 20 | ||||||||||||||||||||
| Sky Cover (%) | 8 | 6 | 6 | 9 | 18 | 14 | 17 | 9 | 15 | 24 | 21 | 18 | 16 | 30 | 25 | 14 | 12 | 13 | 7 | 3 | 3 | 5 | 7 | 40 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 6 | 8 | 7 | 9 | 8 | 6 | 3 | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 21 |
| Relative Humidity (%) | 24 | 21 | 19 | 18 | 19 | 20 | 24 | 29 | 36 | 43 | 47 | 52 | 55 | 59 | 63 | 65 | 64 | 65 | 62 | 56 | 46 | 37 | 31 | 29 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (MDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 86 | 87 | 87 | 87 | 85 | 82 | 78 | 74 | 69 | 65 | 62 | 59 | 56 | 54 | 53 | 51 | 50 | 49 | 50 | 51 | 53 | 54 | 54 | 55 |
| Dewpoint (°F) | 49 | 49 | 49 | 49 | 50 | 51 | 53 | 55 | 55 | 56 | 55 | 55 | 54 | 54 | 53 | 51 | 50 | 49 | 50 | 51 | 51 | 51 | 51 | 51 |
| Heat Index (°F) | 84 | 85 | 85 | 84 | 83 | 81 | 78 | |||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 11 | 11 | 11 | 14 | 14 | 14 | 15 | 15 | 15 | 13 | 13 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
| Wind Dir | NW | NW | NNW | NNW | NNW | NNE | NNE | NNE | N | N | N | N | N | N | N | N | N | N | N | N | ENE | ENE | ENE | ENE |
| Gust | 20 | 20 | 20 | 20 | 20 | 22 | 22 | 22 | 25 | 25 | 25 | 22 | 22 | 22 | 20 | 20 | 20 | 21 | 21 | 21 | 18 | 18 | 18 | 20 |
| Sky Cover (%) | 40 | 40 | 40 | 40 | 40 | 79 | 79 | 79 | 79 | 79 | 79 | 82 | 82 | 82 | 94 | 94 | 94 | 93 | 93 | 93 | 83 | 83 | 83 | 80 |
| Precipitation Potential (%) | 21 | 21 | 21 | 21 | 21 | 68 | 68 | 68 | 68 | 68 | 68 | 73 | 73 | 73 | 73 | 73 | 73 | 67 | 67 | 67 | 67 | 67 | 67 | 70 |
| Relative Humidity (%) | 27 | 26 | 27 | 27 | 29 | 34 | 42 | 52 | 62 | 71 | 79 | 86 | 92 | 97 | 100 | 100 | 100 | 100 | 99 | 97 | 95 | 92 | 88 | 85 |
| Rain | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- |
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