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Weather & Climate in Loma, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Loma experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 26°F in January while summers reach 71°F in July. The area gets 273 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 16.9 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 2,744 feet.
Temperature
26°F Jan (-3°C)
71°F Jul (21°C)
| Annual Average | 46.9°F |
| 13% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 71°F (21°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 2,744 ft (836 m) |
| Area | 3.4 sq mi (8.9 km²) |
| Population Density | 26/sq mi |
| Coordinates | 47.9511°N, 110.4886°W |
| Timezone | America/Denver |
| County | Chouteau County County |
| Nearest Airport | Great Falls International (GTF) 52 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 39.5 / 100 |
| Social Vulnerability | 65.4 / 100 |
| Community Resilience | 24.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
9 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Aug 16, 1994 | 27 km W of Chester, Montana | M3.9 | 87 km | 5 km |
| Jun 5, 1991 | 18 km SW of Shelby, Montana | M3.6 | 122 km | 5 km |
| Apr 2, 2014 | 13 km NNW of Conrad, Montana | M3.1 | 120 km | 7 km |
| Dec 5, 1991 | 15 km WSW of Hays, Montana | M3.0 | 119 km | 10 km |
| May 6, 2014 | 10 km SSW of Cascade, Montana | M2.8 | 128 km | 13 km |
| Apr 11, 2010 | 33 km ENE of Helena Valley Northeast, Montana | M2.8 | 147 km | 18 km |
| Jan 8, 2012 | 8 km W of Valier, Montana | M2.6 | 145 km | 8 km |
| May 10, 2024 | 13 km WSW of Cascade, Montana | M2.6 | 130 km | 26 km |
| Feb 25, 2013 | 28 km WSW of Chester, Montana | M2.5 | 77 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
46 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 7 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 5, 1988 | EF3 | 38 km | 12.0 mi | 0 |
| Jul 5, 1988 | EF3 | 56 km | 3.0 mi | 0 |
| Jul 5, 1988 | EF3 | 43 km | 10.0 mi | 0 |
| Jun 25, 1996 | EF2 | 80 km | 2.0 mi | 0 |
| Apr 24, 1994 | EF2 | 93 km | 1.5 mi | 0 |
| Apr 24, 1994 | EF2 | 93 km | 1.0 mi | 0 |
| Jun 8, 1976 | EF2 | 74 km | 0.1 mi | 0 |
| Apr 22, 2003 | EF1 | 91 km | 2.0 mi | 0 |
| Jul 3, 1998 | EF1 | 90 km | 0.5 mi | 0 |
| Jun 19, 1998 | EF1 | 38 km | 1.0 mi | 0 |
| Jul 5, 1988 | EF1 | 99 km | 0.2 mi | 0 |
| Jun 1, 1980 | EF1 | 39 km | 0.1 mi | 0 |
| May 25, 1980 | EF1 | 77 km | 0.1 mi | 0 |
| May 25, 1980 | EF1 | 65 km | 0.1 mi | 0 |
| May 24, 1977 | EF1 | 72 km | 0.1 mi | 0 |
| Jul 10, 1965 | EF1 | 29 km | 0.2 mi | 0 |
| Jul 1, 1962 | EF1 | 80 km | 3.8 mi | 0 |
| Jun 29, 1961 | EF1 | 77 km | 0.1 mi | 0 |
| Jun 29, 1960 | EF1 | 55 km | 0.3 mi | 0 |
| Jul 6, 2022 | EF0 | 96 km | 1.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: TAYLOR (21,704 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | TAYLOR | 21,704 | 81 km |
| 2017 | EAST FORK | 21,165 | 75 km |
| 2009 | MEISSNER | 12,318 | 59 km |
| 1984 | CENTENNIAL | 11,775 | 62 km |
| 2022 | EAGLE CREEK | 6,359 | 68 km |
| 1988 | LOSTCANYON | 4,532 | 59 km |
| 2008 | CHOUTEAU CO COMPLEX | 4,365 | 4 km |
| 2019 | STUCKEY RD MA | 4,073 | 77 km |
| 1991 | POWER | 3,822 | 87 km |
| 2008 | UNIT 3 MARSH HAZ FUEL REDUCTION | 3,333 | 71 km |
| 2020 | EAGLE ROCK ROAD | 3,129 | 72 km |
| 2022 | BENTON LAKE UNIT 3 AND 4B | 2,996 | 70 km |
| 2007 | CHOUTEAU CO ASST | 2,646 | 23 km |
| 2022 | MTBLR-FY22-RX | 2,244 | 72 km |
| 2007 | 2007 HAZ FUEL REDUCTION | 2,159 | 67 km |
| 2021 | FOUR SISTERS | 1,999 | 51 km |
| 2021 | EAGLE BUTTE | 1,817 | 37 km |
| 2005 | H RX F COMPLEX BROADCAST BURNS | 1,747 | 71 km |
| 2021 | BENTON LAKE UNIT 5 | 1,716 | 69 km |
| 1988 | P N | 1,533 | 65 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 0.8 in | |
| February | 25°F (-4°C) | 0.5 in | Driest |
| March | 35°F (2°C) | 0.8 in | |
| April | 45°F (7°C) | 1.1 in | |
| May | 55°F (13°C) | 2.6 in | Wettest |
| June | 63°F (17°C) | 2.4 in | |
| July | 71°F (21°C) | 1.3 in | Warmest |
| August | 69°F (20°C) | 1.5 in | |
| September | 58°F (14°C) | 1.3 in | |
| October | 47°F (8°C) | 0.8 in | |
| November | 33°F (0°C) | 0.5 in | |
| December | 24°F (-5°C) | 0.6 in | Coldest |
Loma has a seasonal temperature swing of 47°F / from 24°F in December to 71°F in July. Total annual precipitation is 14.3 inches, with May being the wettest month (2.6") and February the driest (0.5").