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Weather & Climate in St. Maries, ID
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. Maries experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 30°F in January while summers reach 68°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 31.1 inches. The area receives 56.0 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 33. The city sits at an elevation of 2,225 feet.
Temperature
30°F Jan (-1°C)
68°F Jul (20°C)
| Annual Average | 47.9°F |
| 11% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 2,225 ft (678 m) |
| Area | 1.1 sq mi (2.8 km²) |
| Population Density | 2,548/sq mi |
| Coordinates | 47.3146°N, 116.5722°W |
| Timezone | America/Boise |
| County | Benewah County County |
| Nearest Airport | Pullman/Moscow Regional (PUW) 47 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 33.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 19.9 / 100 |
| Social Vulnerability | 52.1 / 100 |
| Community Resilience | 18.8 / 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 Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
103 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Dec 22, 1998 | Idaho-Montana border region | M4.7 | 127 km | 12 km |
| Aug 17, 1994 | 1 km E of Mullan, Idaho | M4.1 | 62 km | 2 km |
| Nov 11, 2001 | 3 km NE of Spokane, Washington | M4.0 | 75 km | 4 km |
| Jan 20, 1998 | 15 km SSE of Happys Inn, Montana | M4.0 | 134 km | 7 km |
| Jun 25, 2001 | Washington | M3.9 | 74 km | 10 km |
| Apr 24, 2015 | 8 km WSW of Hope, Idaho | M3.9 | 101 km | 17 km |
| Nov 8, 1997 | 39 km SE of Pierce, Idaho | M3.8 | 148 km | 5 km |
| Jun 28, 1998 | 3 km SE of Genesee, Idaho | M3.8 | 90 km | 10 km |
| Aug 19, 1999 | 12 km ENE of Happys Inn, Montana | M3.7 | 149 km | 14 km |
| Apr 24, 2015 | 12 km SSW of East Hope, Idaho | M3.7 | 93 km | 9 km |
| May 30, 1996 | 3 km SSW of Mullan, Idaho | M3.6 | 58 km | 1 km |
| Oct 26, 1999 | 23 km WNW of Niarada, Montana | M3.6 | 142 km | 12 km |
| Mar 14, 1997 | 1 km E of Mullan, Idaho | M3.6 | 62 km | 2 km |
| Jan 20, 2000 | 21 km ENE of Athol, Idaho | M3.5 | 78 km | 5 km |
| Jun 17, 2004 | 11 km SSE of Washtucna, Washington | M3.4 | 145 km | 17 km |
| Jun 28, 1997 | 3 km NNW of Mullan, Idaho | M3.4 | 61 km | 2 km |
| Jun 25, 2001 | 2 km SSE of Town and Country, Washington | M3.4 | 76 km | 10 km |
| Nov 2, 1996 | 4 km W of Trout Creek, Montana | M3.4 | 90 km | 5 km |
| May 14, 2014 | 5 km NE of Happys Inn, Montana | M3.4 | 143 km | 15 km |
| Mar 8, 1994 | 32 km S of Wallace, Idaho | M3.4 | 50 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
28 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1997 | EF2 | 62 km | 5.0 mi | 0 |
| Apr 9, 1991 | EF2 | 99 km | 1.0 mi | 0 |
| Aug 30, 1971 | EF2 | 73 km | 0.5 mi | 0 |
| May 6, 1957 | EF2 | 51 km | 1.5 mi | 0 |
| Jun 15, 1954 | EF2 | 62 km | 0.5 mi | 0 |
| May 31, 1997 | EF1 | 93 km | 5.0 mi | 0 |
| May 19, 1986 | EF1 | 64 km | 2.0 mi | 0 |
| Apr 12, 1984 | EF1 | 67 km | 1.0 mi | 0 |
| Oct 17, 1983 | EF1 | 76 km | 0.5 mi | 0 |
| Jun 22, 1981 | EF1 | 97 km | 0.1 mi | 0 |
| May 2, 1973 | EF1 | 73 km | 0.1 mi | 0 |
| Jun 20, 1969 | EF1 | 92 km | 1.0 mi | 0 |
| Apr 18, 2024 | EF0 | 83 km | 0.0 mi | 0 |
| May 6, 2022 | EF0 | 69 km | 2.1 mi | 0 |
| May 6, 2022 | EF0 | 81 km | 0.6 mi | 0 |
| Aug 9, 2016 | EF0 | 87 km | 0.2 mi | 0 |
| Jul 22, 2016 | EF0 | 84 km | 0.2 mi | 0 |
| Oct 5, 2011 | EF0 | 91 km | 0.0 mi | 0 |
| May 21, 2004 | EF0 | 90 km | 0.2 mi | 0 |
| Apr 27, 1999 | EF0 | 83 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1949 | COLUMBIA RIVER VALLEY, WA | Meteorological | 19.8 m | — | 145 km |
| 2009 | COLUMBIA RIVER VALLEY, WA | Meteorological | 9.0 m | — | 123 km |
| 2009 | COLUMBIA RIVER VALLEY, WA | Meteorological | 3.6 m | — | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: DECEITFUL (12,750 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | DECEITFUL | 12,750 | 57 km |
| 2021 | BEDROCK | 11,998 | 85 km |
| 2021 | TUMBLEDOWN | 11,269 | 82 km |
| 2015 | SOUTH BOBTAIL | 11,256 | 72 km |
| 2023 | OREGON | 10,957 | 89 km |
| 2016 | SNAKE RIVER FIRE | 10,349 | 99 km |
| 2023 | GRAY | 10,096 | 86 km |
| 2014 | WATERMELON HILL | 9,321 | 92 km |
| 2015 | LOWER FLAT | 9,034 | 64 km |
| 2016 | SPOKANE COMPLEX | 6,839 | 57 km |
| 2015 | CHICADEE | 5,766 | 73 km |
| 2017 | CUB CREEK | 5,683 | 84 km |
| 2015 | NORTH GRIZZLY | 5,286 | 57 km |
| 2006 | ULM PEAK | 4,610 | 79 km |
| 2023 | RIDGE CREEK | 4,608 | 60 km |
| 2012 | ISABELLA COMPLEX | 4,479 | 89 km |
| 2021 | BENTON RIDGE | 4,400 | 78 km |
| 2018 | SURPRISE CREEK | 3,746 | 71 km |
| 2018 | RAMPIKE | 3,688 | 77 km |
| 1996 | UNNAMED | 3,523 | 90 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 4.3 in | Wettest |
| February | 32°F (0°C) | 3.2 in | |
| March | 37°F (3°C) | 2.9 in | |
| April | 44°F (7°C) | 2.2 in | |
| May | 51°F (11°C) | 2.4 in | |
| June | 58°F (14°C) | 2.1 in | |
| July | 68°F (20°C) | 1.0 in | Warmest, Driest |
| August | 64°F (18°C) | 1.3 in | |
| September | 56°F (13°C) | 1.6 in | |
| October | 45°F (7°C) | 2.1 in | |
| November | 35°F (1°C) | 3.9 in | |
| December | 28°F (-2°C) | 4.1 in | Coldest |
St. Maries has a seasonal temperature swing of 41°F / from 28°F in December to 68°F in July. Total annual precipitation is 31.1 inches, with January being the wettest month (4.3") and July the driest (1.0").