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Weather & Climate in Happys Inn, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Happys Inn experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 28°F in January while summers reach 68°F in July. The area gets 274 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 17.1 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 3,360 feet.
Temperature
28°F Jan (-2°C)
68°F Jul (20°C)
| Annual Average | 46.4°F |
| 14% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 3,360 ft (1,024 m) |
| Area | 12.4 sq mi (32.2 km²) |
| Population Density | 15/sq mi |
| Coordinates | 48.0583°N, 115.1269°W |
| Timezone | America/Denver |
| County | Lincoln County County |
| Nearest Airport | Glacier Park International (FCA) 44 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 64.3 / 100 |
| Social Vulnerability | 87.2 / 100 |
| Community Resilience | 13.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
169 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Dec 22, 1998 | Idaho-Montana border region | M4.7 | 9 km | 12 km |
| Mar 4, 2000 | 35 km S of Pincher Creek, Canada | M4.6 | 148 km | 1 km |
| Mar 22, 2006 | 8 km SSW of Rexford, Montana | M4.3 | 86 km | 8 km |
| Aug 17, 1994 | 1 km E of Mullan, Idaho | M4.1 | 81 km | 2 km |
| Apr 15, 1998 | 11 km NE of Swan Lake, Montana | M4.1 | 103 km | 4 km |
| Jun 29, 1995 | 2 km NNW of Kila, Montana | M4.1 | 50 km | 5 km |
| May 2, 1995 | 2 km NW of Kila, Montana | M4.1 | 49 km | 9 km |
| Jan 20, 1998 | 15 km SSE of Happys Inn, Montana | M4.0 | 13 km | 7 km |
| Apr 1, 1992 | 10 km ESE of Swan Lake, Montana | M4.0 | 106 km | 5 km |
| Apr 24, 2015 | 8 km WSW of Hope, Idaho | M3.9 | 97 km | 17 km |
| May 2, 1995 | 3 km WNW of Kila, Montana | M3.8 | 48 km | 9 km |
| Sep 26, 2004 | 14 km WSW of Pablo, Montana | M3.8 | 82 km | 17 km |
| Apr 24, 2015 | 12 km SSW of East Hope, Idaho | M3.7 | 92 km | 9 km |
| Aug 19, 1999 | 12 km ENE of Happys Inn, Montana | M3.7 | 13 km | 14 km |
| Oct 2, 1995 | 18 km E of Finley Point, Montana | M3.7 | 105 km | 5 km |
| Oct 26, 1999 | 23 km WNW of Niarada, Montana | M3.6 | 24 km | 12 km |
| Mar 14, 1997 | 1 km E of Mullan, Idaho | M3.6 | 82 km | 2 km |
| Feb 2, 1997 | 1 km NNE of Lindisfarne, Montana | M3.6 | 73 km | 5 km |
| May 30, 1996 | 3 km SSW of Mullan, Idaho | M3.6 | 86 km | 1 km |
| Jul 18, 1991 | 14 km SSE of Swan Lake, Montana | M3.5 | 106 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
7 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.
| Date | Rating | Distance | Path | Fatalities |
| Nov 4, 2013 | EF0 | 79 km | 0.8 mi | 0 |
| Sep 1, 2011 | EF0 | 87 km | 0.7 mi | 0 |
| Apr 9, 2008 | EF0 | 61 km | 0.0 mi | 0 |
| Jul 18, 2007 | EF0 | 75 km | 1.0 mi | 0 |
| Jul 18, 2007 | EF0 | 74 km | 8.0 mi | 0 |
| Sep 10, 2000 | EF0 | 71 km | 2.0 mi | 0 |
| Jul 9, 1978 | EF0 | 56 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: CHIPPY CREEK (95,656 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | CHIPPY CREEK | 95,656 | 36 km |
| 2003 | ROBERT | 54,500 | 97 km |
| 2021 | THORNE CREEK | 39,694 | 44 km |
| 2007 | BRUSH CREEK | 30,166 | 42 km |
| 2016 | COPPER KING | 28,338 | 48 km |
| 2017 | SHEEP GAP | 24,702 | 65 km |
| 2022 | ELMO | 22,148 | 58 km |
| 2017 | WEST FORK | 21,154 | 62 km |
| 2023 | NIARADA | 20,686 | 54 km |
| 2000 | UPPER NINEMILE COMPLEX (NINE MILE) | 19,695 | 98 km |
| 2003 | BLACKFOOT LAKE COMPLEX (BLACKFOOT LAKE) | 18,274 | 91 km |
| 2023 | RIVER ROAD EAST | 18,068 | 78 km |
| 1994 | LITTLE WOLF | 15,714 | 36 km |
| 2017 | DEEP CREEK | 14,558 | 34 km |
| 2023 | MIDDLE RIDGE | 14,459 | 78 km |
| 2017 | MOOSE PEAK | 14,085 | 19 km |
| 2021 | SOUTH YAAK | 12,866 | 80 km |
| 2021 | DECEITFUL | 12,750 | 79 km |
| 1984 | HOUGHTON CREEK II | 12,495 | 10 km |
| 2000 | CLEAR CREEK DIVIDE COMPLEX (CLEAR CREEK) | 12,031 | 84 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 3.0 in | Wettest |
| February | 27°F (-3°C) | 2.1 in | |
| March | 33°F (0°C) | 1.8 in | |
| April | 40°F (5°C) | 1.6 in | |
| May | 48°F (9°C) | 2.1 in | |
| June | 56°F (13°C) | 2.3 in | |
| July | 68°F (20°C) | 1.3 in | Warmest, Driest |
| August | 62°F (17°C) | 1.4 in | |
| September | 53°F (11°C) | 1.5 in | |
| October | 42°F (6°C) | 1.5 in | |
| November | 31°F (-1°C) | 2.8 in | |
| December | 23°F (-5°C) | 2.9 in | Coldest |
Happys Inn has a seasonal temperature swing of 45°F / from 23°F in December to 68°F in July. Total annual precipitation is 24.2 inches, with January being the wettest month (3.0") and July the driest (1.3").