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Weather & Climate in Post Falls, ID
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Post Falls experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 31°F in January while summers reach 70°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 25.4 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 33. The city sits at an elevation of 2,211 feet.
Temperature
31°F Jan (-0°C)
70°F Jul (21°C)
| Annual Average | 48.8°F |
| 10% below US avg | |
| January Average | 31°F (-0°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 2,211 ft (674 m) |
| Area | 19.1 sq mi (49.5 km²) |
| Population Density | 2,182/sq mi |
| Coordinates | 47.7256°N, 116.9442°W |
| Timezone | America/Boise |
| County | Kootenai County County |
| Nearest Airport | Spokane International (GEG) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 33.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 79.0 / 100 |
| Social Vulnerability | 23.4 / 100 |
| Community Resilience | 46.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
94 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Dec 22, 1998 | Idaho-Montana border region | M4.7 | 133 km | 12 km |
| Aug 17, 1994 | 1 km E of Mullan, Idaho | M4.1 | 92 km | 2 km |
| Nov 11, 2001 | 3 km NE of Spokane, Washington | M4.0 | 34 km | 4 km |
| Jan 20, 1998 | 15 km SSE of Happys Inn, Montana | M4.0 | 144 km | 7 km |
| Jun 25, 2001 | Washington | M3.9 | 34 km | 10 km |
| Apr 24, 2015 | 8 km WSW of Hope, Idaho | M3.9 | 68 km | 17 km |
| Jun 28, 1998 | 3 km SE of Genesee, Idaho | M3.8 | 133 km | 10 km |
| Apr 24, 2015 | 12 km SSW of East Hope, Idaho | M3.7 | 63 km | 9 km |
| May 30, 1996 | 3 km SSW of Mullan, Idaho | M3.6 | 90 km | 1 km |
| Mar 14, 1997 | 1 km E of Mullan, Idaho | M3.6 | 92 km | 2 km |
| Jan 20, 2000 | 21 km ENE of Athol, Idaho | M3.5 | 49 km | 5 km |
| May 14, 2014 | 5 km NE of Happys Inn, Montana | M3.4 | 145 km | 15 km |
| Dec 15, 2012 | 19 km S of Troy, Montana | M3.4 | 102 km | 1 km |
| Mar 8, 1994 | 32 km S of Wallace, Idaho | M3.4 | 97 km | 5 km |
| Jun 28, 1997 | 3 km NNW of Mullan, Idaho | M3.4 | 88 km | 2 km |
| Nov 2, 1996 | 4 km W of Trout Creek, Montana | M3.4 | 97 km | 5 km |
| Jun 25, 2001 | 2 km SSE of Town and Country, Washington | M3.4 | 35 km | 10 km |
| May 10, 2000 | Idaho-Montana border region | M3.3 | 92 km | 2 km |
| Sep 22, 2003 | 12 km NW of Rathdrum, Idaho | M3.3 | 20 km | 13 km |
| Nov 12, 2001 | 3 km NNE of Spokane, Washington | M3.3 | 35 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
30 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 4 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1997 | EF2 | 32 km | 5.0 mi | 0 |
| Apr 9, 1991 | EF2 | 51 km | 1.0 mi | 0 |
| Jul 17, 1978 | EF2 | 52 km | 0.1 mi | 0 |
| Aug 30, 1971 | EF2 | 95 km | 0.5 mi | 0 |
| May 6, 1957 | EF2 | 33 km | 1.5 mi | 0 |
| Jun 15, 1954 | EF2 | 46 km | 0.5 mi | 0 |
| May 6, 2009 | EF1 | 90 km | 3.4 mi | 0 |
| May 31, 1997 | EF1 | 45 km | 5.0 mi | 0 |
| May 29, 1994 | EF1 | 93 km | 0.1 mi | 0 |
| Apr 12, 1984 | EF1 | 21 km | 1.0 mi | 0 |
| Oct 17, 1983 | EF1 | 53 km | 0.5 mi | 0 |
| Jun 22, 1981 | EF1 | 45 km | 0.1 mi | 0 |
| Aug 19, 1978 | EF1 | 67 km | 1.9 mi | 0 |
| Jun 29, 1970 | EF1 | 57 km | 0.1 mi | 0 |
| Apr 18, 2024 | EF0 | 47 km | 0.0 mi | 0 |
| Mar 26, 2024 | EF0 | 97 km | 0.0 mi | 0 |
| May 6, 2022 | EF0 | 32 km | 2.1 mi | 0 |
| May 6, 2022 | EF0 | 44 km | 0.6 mi | 0 |
| Aug 9, 2016 | EF0 | 51 km | 0.2 mi | 0 |
| Jul 22, 2016 | EF0 | 47 km | 0.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Tsunami History
9 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1952 | COLUMBIA RIVER VALLEY, WA | Meteorological | 19.8 m | - | 130 km |
| 1949 | COLUMBIA RIVER VALLEY, WA | Meteorological | 19.8 m | - | 106 km |
| 2024 | COLUMBIA RIVER VALLEY, WA | Meteorological | 14.3 m | - | 129 km |
| 1944 | COLUMBIA RIVER VALLEY, WA | Meteorological | 9.1 m | - | 130 km |
| 2009 | COLUMBIA RIVER VALLEY, WA | Meteorological | 9.0 m | - | 82 km |
| 1953 | COLUMBIA RIVER VALLEY, WA | Meteorological | 4.8 m | - | 130 km |
| 2009 | COLUMBIA RIVER VALLEY, WA | Meteorological | 3.6 m | - | 93 km |
| 1953 | COLUMBIA RIVER VALLEY, WA | Meteorological | - | - | 130 km |
| 1952 | COLUMBIA RIVER VALLEY, WA | Meteorological | - | - | 130 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CARPENTER RD. (62,488 acres, 2015).
| Year | Name | Acres Burned | Distance |
| 2015 | CARPENTER RD. | 62,488 | 93 km |
| 2015 | TOWER | 24,779 | 85 km |
| 2021 | FORD CORKSCREW | 16,179 | 62 km |
| 2021 | DECEITFUL | 12,750 | 74 km |
| 1991 | UNNAMED | 12,401 | 62 km |
| 2015 | SOUTH BOBTAIL | 11,256 | 85 km |
| 2023 | OREGON | 10,957 | 36 km |
| 2023 | GRAY | 10,096 | 59 km |
| 2016 | CAYUSE MTN | 9,744 | 83 km |
| 2015 | NAPOLEON 1 | 9,727 | 92 km |
| 2014 | WATERMELON HILL | 9,321 | 76 km |
| 2015 | LOWER FLAT | 9,034 | 62 km |
| 2018 | COUGAR | 8,708 | 86 km |
| 2021 | TRESTLE CREEK COMPLEX | 7,117 | 86 km |
| 2016 | SPOKANE COMPLEX | 6,839 | 37 km |
| 1991 | UNNAMED | 5,297 | 67 km |
| 2015 | NORTH GRIZZLY | 5,286 | 61 km |
| 2015 | BERRAY MOUNTAIN | 5,126 | 96 km |
| 2018 | ANGEL SPRINGS | 4,718 | 81 km |
| 2006 | ULM PEAK | 4,610 | 76 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 3.2 in | |
| February | 32°F (0°C) | 2.4 in | |
| March | 39°F (4°C) | 2.1 in | |
| April | 46°F (8°C) | 1.8 in | |
| May | 54°F (12°C) | 2.1 in | |
| June | 60°F (16°C) | 1.9 in | |
| July | 70°F (21°C) | 1.0 in | Warmest, Driest |
| August | 66°F (19°C) | 1.1 in | |
| September | 57°F (14°C) | 1.1 in | |
| October | 46°F (8°C) | 1.7 in | |
| November | 36°F (2°C) | 3.2 in | |
| December | 29°F (-2°C) | 3.5 in | Coldest, Wettest |
Post Falls has a seasonal temperature swing of 41°F / from 29°F in December to 70°F in July. Total annual precipitation is 25.2 inches, with December being the wettest month (3.5") and July the driest (1.0").