All Countries
Weather & Climate in Lake Mary Ronan, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lake Mary Ronan experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 30°F in January while summers reach 68°F in July. The area gets 276 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 21.4 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 3,732 feet.
Temperature
30°F Jan (-1°C)
68°F Jul (20°C)
| Annual Average | 46.8°F |
| 13% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 3,732 ft (1,138 m) |
| Area | 1.1 sq mi (2.7 km²) |
| Population Density | 60/sq mi |
| Coordinates | 47.9172°N, 114.3791°W |
| Timezone | America/Denver |
| County | Lake County County |
| Nearest Airport | Glacier Park International (FCA) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 67.7 / 100 |
| Social Vulnerability | 58.8 / 100 |
| Community Resilience | 51.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| 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 Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
216 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Dec 22, 1998 | Idaho-Montana border region | M4.7 | 62 km | 12 km |
| Mar 4, 2000 | 35 km S of Pincher Creek, Canada | M4.6 | 142 km | 1 km |
| Mar 22, 2006 | 8 km SSW of Rexford, Montana | M4.3 | 118 km | 8 km |
| Apr 15, 1998 | 11 km NE of Swan Lake, Montana | M4.1 | 48 km | 4 km |
| Jun 29, 1995 | 2 km NNW of Kila, Montana | M4.1 | 25 km | 5 km |
| Aug 17, 1994 | 1 km E of Mullan, Idaho | M4.1 | 116 km | 2 km |
| May 2, 1995 | 2 km NW of Kila, Montana | M4.1 | 26 km | 9 km |
| Jan 20, 1998 | 15 km SSE of Happys Inn, Montana | M4.0 | 50 km | 7 km |
| Apr 1, 1992 | 10 km ESE of Swan Lake, Montana | M4.0 | 49 km | 5 km |
| Jul 19, 2002 | 43 km NE of Seeley Lake, Montana | M4.0 | 113 km | 25 km |
| Jun 2, 1996 | 37 km N of Ovando, Montana | M3.9 | 118 km | 5 km |
| May 7, 1992 | 14 km NE of Seeley Lake, Montana | M3.8 | 107 km | 5 km |
| May 2, 1995 | 3 km WNW of Kila, Montana | M3.8 | 25 km | 9 km |
| Mar 21, 1992 | 20 km NE of Seeley Lake, Montana | M3.8 | 108 km | 5 km |
| Jun 1, 1996 | 23 km N of Ovando, Montana | M3.8 | 119 km | 10 km |
| Sep 26, 2004 | 14 km WSW of Pablo, Montana | M3.8 | 39 km | 17 km |
| Jul 5, 2024 | 24 km ENE of Seeley Lake, Montana | M3.8 | 112 km | 22 km |
| Jul 2, 1992 | 4 km SSE of South Browning, Montana | M3.8 | 121 km | 10 km |
| Apr 24, 2015 | 12 km SSW of East Hope, Idaho | M3.7 | 150 km | 9 km |
| Aug 19, 1999 | 12 km ENE of Happys Inn, Montana | M3.7 | 50 km | 14 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
10 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.
| Date | Rating | Distance | Path | Fatalities |
| May 9, 2023 | EF0 | 66 km | 0.5 mi | 0 |
| Nov 4, 2013 | EF0 | 24 km | 0.8 mi | 0 |
| Sep 1, 2011 | EF0 | 30 km | 0.7 mi | 0 |
| Apr 9, 2008 | EF0 | 34 km | 0.0 mi | 0 |
| Jul 18, 2007 | EF0 | 29 km | 1.0 mi | 0 |
| Jul 18, 2007 | EF0 | 18 km | 8.0 mi | 0 |
| Sep 10, 2000 | EF0 | 56 km | 2.0 mi | 0 |
| Aug 7, 1995 | EF0 | 73 km | 0.1 mi | 0 |
| Mar 3, 1991 | EF0 | 92 km | 0.1 mi | 0 |
| Jul 9, 1978 | EF0 | 85 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 |
| 2001 | MOOSE | 73,210 | 84 km |
| 2015 | BEAR CREEK | 60,710 | 72 km |
| 2003 | ROBERT | 54,500 | 76 km |
| 2007 | SKYLAND | 41,237 | 99 km |
| 2021 | THORNE CREEK | 39,694 | 71 km |
| 2007 | JOCKO LAKES | 35,759 | 96 km |
| 1988 | RED BENCH | 33,845 | 97 km |
| 2003 | LITTLE SALMON CREEK | 33,044 | 87 km |
| 2007 | BRUSH CREEK | 30,166 | 61 km |
| 2016 | COPPER KING | 28,338 | 63 km |
| 2017 | SHEEP GAP | 24,702 | 70 km |
| 2003 | RAMPAGE COMPLEX (DOUBLE MOUNTAIN 2) | 23,680 | 79 km |
| 2015 | TRAIL CREEK | 22,338 | 75 km |
| 2022 | ELMO | 22,148 | 6 km |
| 2023 | NIARADA | 20,686 | 16 km |
| 2017 | SCALP | 20,309 | 100 km |
| 2000 | UPPER NINEMILE COMPLEX (NINE MILE) | 19,695 | 77 km |
| 2003 | BLACKFOOT LAKE COMPLEX (BLACKFOOT LAKE) | 18,274 | 49 km |
| 2023 | RIVER ROAD EAST | 18,068 | 65 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.4 in | |
| February | 27°F (-3°C) | 1.7 in | |
| March | 33°F (0°C) | 1.6 in | |
| April | 40°F (5°C) | 1.6 in | |
| May | 48°F (9°C) | 2.4 in | |
| June | 56°F (13°C) | 2.5 in | Wettest |
| July | 68°F (20°C) | 1.4 in | Warmest, Driest |
| August | 63°F (17°C) | 1.6 in | |
| September | 53°F (12°C) | 1.6 in | |
| October | 43°F (6°C) | 1.5 in | |
| November | 31°F (-1°C) | 2.1 in | |
| December | 24°F (-5°C) | 2.4 in | Coldest |
Lake Mary Ronan has a seasonal temperature swing of 44°F / from 24°F in December to 68°F in July. Total annual precipitation is 22.7 inches, with June being the wettest month (2.5") and July the driest (1.4").