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Weather & Climate in Monarch, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Monarch has a cool climate with an average annual temperature of 44°F (7°C). Winters average 27°F in January while summers reach 64°F in July. The area gets 253 sunny days per year, above the 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 4,606 feet.
Temperature
27°F Jan (-3°C)
64°F Jul (18°C)
| Annual Average | 43.7°F |
| 19% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 4,606 ft (1,404 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 29/sq mi |
| Coordinates | 47.1003°N, 110.8448°W |
| Timezone | America/Denver |
| County | Judith Basin County County |
| Nearest Airport | Great Falls International (GTF) 36 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 5.5 / 100 |
| Social Vulnerability | 29.6 / 100 |
| Community Resilience | 49.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
297 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.
| Jul 6, 2017 | 11 km SE of Lincoln, Montana | M5.8 | 134 km | 12 km |
| Jul 6, 2017 | 15 km S of Lincoln, Montana | M5.0 | 142 km | 15 km |
| Jul 6, 2017 | 14 km SE of Lincoln, Montana | M4.4 | 132 km | 10 km |
| Jan 30, 2016 | 19 km E of Lincoln, Montana | M4.3 | 121 km | 2 km |
| Aug 16, 2019 | 4 km NW of Manhattan, Montana | M4.2 | 140 km | 2 km |
| Apr 8, 2000 | 8 km ENE of Townsend, Montana | M4.1 | 95 km | 5 km |
| Aug 6, 2019 | 3 km NW of Manhattan, Montana | M4.1 | 141 km | 5 km |
| Nov 10, 2000 | 14 km NE of Townsend, Montana | M4.0 | 88 km | 2 km |
| Jul 6, 2017 | 14 km SSE of Lincoln, Montana | M4.0 | 136 km | 9 km |
| Nov 6, 1997 | 4 km WSW of Springhill, Montana | M4.0 | 144 km | 5 km |
| Jul 14, 2019 | 11 km NNE of Manhattan, Montana | M4.0 | 132 km | 6 km |
| Jul 17, 2017 | 12 km ESE of Lincoln, Montana | M4.0 | 131 km | 13 km |
| Feb 6, 1999 | 24 km E of Townsend, Montana | M3.9 | 87 km | 1 km |
| Oct 19, 2017 | 12 km SE of Lincoln, Montana | M3.9 | 132 km | 4 km |
| Apr 1, 1993 | 15 km E of Lincoln, Montana | M3.9 | 124 km | 5 km |
| Mar 13, 2017 | 4 km ESE of Avon, Montana | M3.8 | 142 km | 20 km |
| Apr 17, 2018 | 13 km ESE of Lincoln, Montana | M3.8 | 130 km | 14 km |
| Jan 16, 2011 | 10 km ENE of Marysville, Montana | M3.7 | 107 km | 15 km |
| May 24, 2000 | 9 km ENE of Townsend, Montana | M3.7 | 94 km | 3 km |
| Jul 6, 2017 | 12 km ESE of Lincoln, Montana | M3.7 | 130 km | 16 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
62 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 6 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 25, 1996 | EF2 | 86 km | 2.0 mi | 0 |
| Apr 24, 1994 | EF2 | 44 km | 1.0 mi | 0 |
| Apr 24, 1994 | EF2 | 44 km | 1.5 mi | 0 |
| Jun 8, 1976 | EF2 | 64 km | 0.1 mi | 0 |
| Jun 30, 1975 | EF2 | 35 km | 0.1 mi | 0 |
| Jul 10, 1965 | EF2 | 48 km | 2.0 mi | 0 |
| Jun 5, 2012 | EF1 | 63 km | 2.8 mi | 0 |
| Jun 16, 2007 | EF1 | 25 km | 5.3 mi | 0 |
| Apr 22, 2003 | EF1 | 47 km | 2.0 mi | 0 |
| Aug 23, 1998 | EF1 | 89 km | 3.5 mi | 0 |
| Jul 3, 1998 | EF1 | 75 km | 0.5 mi | 0 |
| Jun 19, 1998 | EF1 | 61 km | 1.0 mi | 0 |
| Jul 5, 1988 | EF1 | 61 km | 0.2 mi | 0 |
| Jun 1, 1980 | EF1 | 76 km | 0.1 mi | 0 |
| Jul 3, 1978 | EF1 | 56 km | 1.0 mi | 0 |
| Jul 3, 1978 | EF1 | 56 km | 1.0 mi | 0 |
| Jul 3, 1978 | EF1 | 56 km | 1.0 mi | 0 |
| Jun 1, 1977 | EF1 | 86 km | 0.1 mi | 0 |
| May 10, 1977 | EF1 | 61 km | 0.1 mi | 0 |
| May 10, 1977 | EF1 | 63 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: WOODS CREEK (55,836 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | WOODS CREEK | 55,836 | 71 km |
| 2021 | HARRIS MTN | 31,792 | 63 km |
| 1984 | NORTH HILL | 27,162 | 86 km |
| 2000 | CANYON FERRY COMPLEX (CAVE GULCH) | 26,997 | 74 km |
| 1990 | TURKEY | 25,658 | 47 km |
| 2007 | MERIWETHER | 18,865 | 79 km |
| 2000 | CANYON FERRY COMPLEX (BUCKSNORT) | 14,843 | 88 km |
| 1990 | BEARTOOTH COMPLEX | 13,462 | 74 km |
| 2009 | MEISSNER | 12,318 | 58 km |
| 1985 | SANDPOINT | 10,439 | 43 km |
| 2021 | BALSINGER | 8,317 | 12 km |
| 2017 | CHINN MA | 7,029 | 82 km |
| 2020 | LOUSE CREEK | 5,237 | 79 km |
| 1988 | TWO DOT | 5,097 | 95 km |
| 2009 | INDIAN TRAIL | 4,592 | 84 km |
| 2020 | YOGO | 4,429 | 33 km |
| 2008 | CHOUTEAU CO COMPLEX | 4,365 | 100 km |
| 2021 | DEEP CREEK CANYON | 4,282 | 84 km |
| 2019 | NORTH HILLS | 4,149 | 91 km |
| 2019 | STUCKEY RD MA | 4,073 | 66 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 1.0 in | |
| February | 26°F (-3°C) | 0.7 in | Driest |
| March | 30°F (-1°C) | 1.3 in | |
| April | 37°F (3°C) | 1.7 in | |
| May | 46°F (8°C) | 3.5 in | Wettest |
| June | 54°F (12°C) | 3.2 in | |
| July | 64°F (18°C) | 1.8 in | Warmest |
| August | 60°F (16°C) | 1.9 in | |
| September | 51°F (11°C) | 1.9 in | |
| October | 42°F (6°C) | 1.3 in | |
| November | 30°F (-1°C) | 0.9 in | |
| December | 24°F (-4°C) | 1.0 in | Coldest |
Monarch has a seasonal temperature swing of 40°F / from 24°F in December to 64°F in July. Total annual precipitation is 20.2 inches, with May being the wettest month (3.5") and February the driest (0.7").