| Point Forecast: Great Falls International Airport MT 47.46N 111.4W (Elev. 3599 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) | 86 | 89 | 91 | 92 | 93 | 91 | 89 | 88 | 80 | 76 | 73 | 71 | 69 | 67 | 64 | 62 | 60 | 59 | 63 | 68 | 72 | 78 | 82 | 84 |
| Dewpoint (°F) | 42 | 42 | 40 | 41 | 42 | 41 | 43 | 46 | 45 | 46 | 46 | 47 | 49 | 47 | 49 | 48 | 47 | 47 | 50 | 49 | 48 | 50 | 50 | 49 |
| Heat Index (°F) | 83 | 85 | 87 | 88 | 89 | 87 | 86 | 84 | 79 | 76 | 78 | 81 | 82 | |||||||||||
| Surface Wind (mph) | 9 | 10 | 10 | 13 | 13 | 13 | 13 | 9 | 9 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 8 | 10 | 10 | 13 | 16 | 17 | 18 |
| Wind Dir | W | W | W | WNW | WNW | WNW | NW | NW | NW | W | WSW | SW | SW | SW | SW | SW | WSW | WSW | SW | SW | WSW | W | W | W |
| Gust | 18 | 20 | 20 | 21 | 21 | 20 | 20 | 23 | 24 | 25 | ||||||||||||||
| Sky Cover (%) | 21 | 32 | 26 | 36 | 27 | 32 | 34 | 16 | 16 | 18 | 28 | 10 | 9 | 12 | 6 | 7 | 5 | 5 | 9 | 9 | 2 | 3 | 10 | 35 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 2 | 9 | 10 | 9 | 9 | 9 | 11 | 6 | 5 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 19 |
| Relative Humidity (%) | 21 | 19 | 17 | 17 | 17 | 18 | 20 | 23 | 30 | 35 | 39 | 42 | 48 | 49 | 58 | 61 | 62 | 65 | 61 | 50 | 43 | 38 | 33 | 30 |
| 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) | 85 | 86 | 86 | 85 | 82 | 79 | 75 | 69 | 65 | 62 | 60 | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 52 | 51 | 52 | 54 | 55 |
| Dewpoint (°F) | 48 | 48 | 49 | 49 | 50 | 51 | 52 | 53 | 52 | 52 | 53 | 53 | 54 | 54 | 54 | 53 | 52 | 51 | 50 | 50 | 49 | 48 | 48 | 48 |
| Heat Index (°F) | 83 | 84 | 83 | 83 | 81 | 79 | 75 | |||||||||||||||||
| Surface Wind (mph) | 18 | 18 | 18 | 18 | 18 | 23 | 23 | 23 | 22 | 22 | 22 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 20 | 20 | 17 | 17 | 17 | 17 |
| Wind Dir | W | W | NW | NW | NW | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | NNE | NNE | NNE | NNE |
| Gust | 25 | 25 | 28 | 28 | 28 | 32 | 32 | 32 | 33 | 33 | 33 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 24 | 24 | 24 | 26 |
| Sky Cover (%) | 35 | 35 | 37 | 37 | 37 | 75 | 75 | 75 | 75 | 75 | 75 | 86 | 86 | 86 | 90 | 90 | 90 | 91 | 91 | 91 | 82 | 82 | 82 | 87 |
| Precipitation Potential (%) | 19 | 19 | 19 | 19 | 19 | 62 | 62 | 62 | 62 | 62 | 62 | 73 | 73 | 73 | 73 | 73 | 73 | 62 | 62 | 62 | 62 | 62 | 62 | 53 |
| Relative Humidity (%) | 28 | 27 | 28 | 30 | 33 | 38 | 46 | 55 | 64 | 70 | 76 | 81 | 86 | 90 | 93 | 94 | 94 | 93 | 93 | 93 | 92 | 87 | 81 | 76 |
| Rain | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc |
| Thunder | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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