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Weather & Climate in Gallatin Gateway, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gallatin Gateway has a cool climate with an average annual temperature of 44°F (7°C). Winters average 25°F in January while summers reach 67°F in July. The area gets 311 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 15.8 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 26 / among the cleanest air in the country. The city sits at an elevation of 4,987 feet.
Temperature
25°F Jan (-4°C)
67°F Jul (19°C)
| Annual Average | 44.4°F |
| 18% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 4,987 ft (1,520 m) |
| Area | 5.9 sq mi (15.2 km²) |
| Population Density | 187/sq mi |
| Coordinates | 45.5878°N, 111.1946°W |
| Timezone | America/Denver |
| County | Gallatin County County |
| Nearest Airport | Bozeman Yellowstone International (BZN) 13 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 81.0 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 71.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,045 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Jul 26, 2005 | 16 km N of Dillon, Montana | M5.6 | 114 km | 13 km |
| Mar 30, 2014 | 22 km S of Mammoth, Wyoming | M4.8 | 99 km | 6 km |
| Apr 9, 2019 | 9 km NE of Lima, Montana | M4.6 | 143 km | 14 km |
| Apr 5, 2011 | 28 km NNE of Spencer, Idaho | M4.4 | 129 km | 12 km |
| Feb 5, 2006 | 44 km NE of Spencer, Idaho | M4.4 | 113 km | 14 km |
| May 8, 2007 | 8 km NNW of Alder, Montana | M4.4 | 76 km | 14 km |
| Jun 16, 2017 | 12 km E of Hebgen Lake Estates, Montana | M4.4 | 91 km | 9 km |
| Jun 13, 2016 | 45 km W of Hebgen Lake Estates, Montana | M4.3 | 105 km | 10 km |
| Oct 28, 1998 | 18 km S of Whitehall, Montana | M4.3 | 74 km | 5 km |
| May 11, 2022 | 36 km S of Silver Gate, Montana | M4.2 | 138 km | 14 km |
| Nov 24, 2000 | 24 km S of Mammoth, Wyoming | M4.2 | 101 km | 9 km |
| Aug 16, 2019 | 4 km NW of Manhattan, Montana | M4.2 | 36 km | 2 km |
| Mar 25, 2008 | 35 km S of Silver Gate, Montana | M4.2 | 136 km | 4 km |
| Aug 30, 1997 | 25 km WNW of Hebgen Lake Estates, Montana | M4.1 | 87 km | 4 km |
| Jun 18, 2006 | 6 km S of Pony, Montana | M4.1 | 55 km | 12 km |
| Apr 8, 2000 | 8 km ENE of Townsend, Montana | M4.1 | 86 km | 5 km |
| Aug 6, 2019 | 3 km NW of Manhattan, Montana | M4.1 | 35 km | 5 km |
| Oct 7, 2024 | 11 km E of Dillon, Montana | M4.1 | 109 km | 17 km |
| Sep 3, 2016 | 16 km S of Whitehall, Montana | M4.0 | 74 km | 8 km |
| Jul 27, 2005 | 18 km N of Dillon, Montana | M4.0 | 112 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
11 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.
| Date | Rating | Distance | Path | Fatalities |
| Jul 2, 2010 | EF2 | 88 km | 2.1 mi | 0 |
| Aug 22, 1965 | EF1 | 96 km | 1.5 mi | 0 |
| Jun 15, 1960 | EF1 | 16 km | 1.3 mi | 0 |
| Aug 9, 2011 | EF0 | 62 km | 0.1 mi | 0 |
| Jun 29, 1999 | EF0 | 52 km | 0.2 mi | 0 |
| Jul 2, 1997 | EF0 | 34 km | 0.1 mi | 0 |
| Jul 2, 1997 | EF0 | 34 km | 0.1 mi | 0 |
| Jun 15, 1996 | EF0 | 90 km | 2.0 mi | 0 |
| May 17, 1994 | EF0 | 48 km | 0.1 mi | 0 |
| Jun 29, 1992 | EF0 | 50 km | 0.1 mi | 0 |
| Jun 12, 1992 | EF0 | 86 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
1 volcano within 200 km. Closest: Yellowstone (135 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yellowstone | Caldera(s) | 2,805 m (9,203 ft) | -1350 | 135 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: MAPLE (103,193 acres, 2016).
| Year | Name | Acres Burned | Distance |
| 2016 | MAPLE | 103,193 | 97 km |
| 2000 | TOSTON-MAUDLOW | 80,383 | 69 km |
| 1988 | HELLROARING | 77,598 | 88 km |
| 2001 | FRIDLEY | 27,575 | 31 km |
| 2006 | JUNGLE | 23,846 | 69 km |
| 2007 | WH COMPLEX (WICKED CREEK) | 22,195 | 66 km |
| 2021 | AMERICAN FORK | 20,726 | 94 km |
| 1988 | FAN | 20,422 | 68 km |
| 2012 | BEAR TRAP 2 | 14,875 | 30 km |
| 2016 | BUFFALO | 13,706 | 98 km |
| 2006 | BIG CREEK | 13,424 | 35 km |
| 2013 | MINER PARADISE COMPLEX | 12,210 | 44 km |
| 2012 | MILLIE | 10,497 | 21 km |
| 1994 | BLACK BUTTE | 10,231 | 99 km |
| 2000 | BEAVER CREEK | 9,568 | 73 km |
| 2015 | EUSTIS | 8,469 | 54 km |
| 2020 | BRIDGER FOOTHILLS | 8,291 | 27 km |
| 2015 | COTTONWOOD GULCH | 8,100 | 41 km |
| 2012 | PINE CREEK | 7,707 | 54 km |
| 2017 | CHINN MA | 7,029 | 90 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 0.9 in | |
| February | 27°F (-3°C) | 0.8 in | Driest |
| March | 33°F (0°C) | 1.6 in | |
| April | 41°F (5°C) | 2.1 in | |
| May | 50°F (10°C) | 3.3 in | Wettest |
| June | 58°F (15°C) | 2.8 in | |
| July | 67°F (19°C) | 1.5 in | Warmest |
| August | 65°F (18°C) | 1.6 in | |
| September | 55°F (13°C) | 2.0 in | |
| October | 45°F (7°C) | 1.7 in | |
| November | 31°F (-0°C) | 1.2 in | |
| December | 24°F (-5°C) | 0.9 in | Coldest |
Gallatin Gateway has a seasonal temperature swing of 43°F / from 24°F in December to 67°F in July. Total annual precipitation is 20.2 inches, with May being the wettest month (3.3") and February the driest (0.8").