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Weather & Climate in Glenns Ferry, ID
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Glenns Ferry experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 34°F in January while summers reach 79°F in July. The area gets 302 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 10.6 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 2,549 feet.
Temperature
34°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 2,549 ft (777 m) |
| Area | 1.9 sq mi (5.0 km²) |
| Population Density | 694/sq mi |
| Coordinates | 42.9499°N, 115.3082°W |
| Timezone | America/Boise |
| County | Gooding County County |
| Nearest Airport | Joslin Field/Magic Valley Regional (TWF) 53 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 33.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 25.5 / 100 |
| Social Vulnerability | 36.8 / 100 |
| Community Resilience | 3.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
294 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| Jun 14, 2020 | 10 km NW of Stanley, Idaho | M4.2 | 149 km | 8 km |
| Jul 10, 2020 | 18 km SW of Stanley, Idaho | M4.1 | 128 km | 10 km |
| May 31, 2020 | 16 km SW of Stanley, Idaho | M3.9 | 132 km | 10 km |
| Jan 1, 2021 | 15 km SSW of Stanley, Idaho | M3.9 | 129 km | 3 km |
| Jul 10, 2020 | 14 km SW of Stanley, Idaho | M3.9 | 132 km | 14 km |
| Jun 27, 2020 | 17 km SW of Stanley, Idaho | M3.8 | 131 km | 10 km |
| May 22, 2020 | 13 km WNW of Stanley, Idaho | M3.8 | 150 km | 11 km |
| May 2, 2020 | 8 km WNW of Stanley, Idaho | M3.7 | 147 km | 10 km |
| May 8, 2020 | 12 km WSW of Stanley, Idaho | M3.7 | 139 km | 10 km |
| Apr 8, 2020 | 15 km SW of Stanley, Idaho | M3.7 | 132 km | 10 km |
| Jul 1, 2020 | 15 km SW of Stanley, Idaho | M3.6 | 132 km | 10 km |
| Apr 22, 2020 | 14 km W of Stanley, Idaho | M3.6 | 144 km | 10 km |
| Apr 1, 2020 | 20 km WNW of Stanley, Idaho | M3.6 | 148 km | 10 km |
| Nov 4, 2002 | 37 km NE of Mountain Home, Idaho | M3.5 | 52 km | 5 km |
| Apr 25, 2021 | 1 km WSW of Stanley, Idaho | M3.5 | 143 km | 3 km |
| May 21, 2020 | 12 km WNW of Stanley, Idaho | M3.5 | 146 km | 10 km |
| Jun 22, 2020 | 11 km SW of Stanley, Idaho | M3.5 | 135 km | 10 km |
| Sep 4, 2022 | southern Idaho | M3.4 | 147 km | 10 km |
| Apr 3, 2020 | 11 km W of Stanley, Idaho | M3.4 | 142 km | 10 km |
| Apr 24, 2020 | 9 km NW of Stanley, Idaho | M3.4 | 148 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
43 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 injury.
| Date | Rating | Distance | Path | Fatalities |
| Jun 9, 1990 | EF2 | 72 km | 0.2 mi | 0 |
| Jun 10, 1990 | EF1 | 45 km | 0.2 mi | 0 |
| Apr 20, 1988 | EF1 | 44 km | 1.0 mi | 0 |
| Apr 20, 1988 | EF1 | 73 km | 1.0 mi | 0 |
| Jul 21, 1987 | EF1 | 94 km | 0.2 mi | 0 |
| Aug 10, 1986 | EF1 | 3 km | 2.0 mi | 0 |
| Jun 24, 1986 | EF1 | 56 km | 0.5 mi | 0 |
| Sep 8, 1985 | EF1 | 85 km | 0.2 mi | 0 |
| May 2, 1985 | EF1 | 59 km | 0.1 mi | 0 |
| Jul 5, 1961 | EF1 | 37 km | 5.1 mi | 0 |
| Jun 2, 1961 | EF1 | 39 km | 0.1 mi | 0 |
| Jun 5, 1957 | EF1 | 96 km | 0.1 mi | 0 |
| Jun 3, 1956 | EF1 | 42 km | 0.1 mi | 0 |
| Jul 25, 2024 | EF0 | 1 km | 0.6 mi | 0 |
| May 27, 2023 | EF0 | 65 km | 5.0 mi | 0 |
| May 27, 2019 | EF0 | 21 km | 0.5 mi | 0 |
| May 7, 2019 | EF0 | 92 km | 1.5 mi | 0 |
| Jun 30, 2016 | EF0 | 74 km | 1.5 mi | 0 |
| May 26, 2013 | EF0 | 54 km | 3.9 mi | 0 |
| May 8, 2013 | EF0 | 75 km | 1.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Black Butte Crater Lava Field (82 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 82 km |
| Craters of the Moon | Pyroclastic cone(s) | 2,005 m (6,578 ft) | -130 | 156 km |
| Wapi Lava Field | Shield | 1,604 m (5,262 ft) | -300 | 170 km |
| Jordan Craters | Volcanic field | 1,473 m (4,833 ft) | -1250 | 176 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: MURPHY COMPLEX (567,409 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | MURPHY COMPLEX | 567,409 | 88 km |
| 2010 | LONG BUTTE | 302,546 | 29 km |
| 1992 | FOOTHILLS | 228,631 | 71 km |
| 2005 | CLOVER | 199,023 | 36 km |
| 2012 | KINYON ROAD | 171,409 | 40 km |
| 2013 | PONY COMPLEX | 148,188 | 56 km |
| 2012 | TRINITY RIDGE | 141,807 | 86 km |
| 2013 | ELK COMPLEX | 129,565 | 60 km |
| 2013 | BEAVER CREEK | 111,286 | 97 km |
| 2018 | BRUNEAU | 87,679 | 95 km |
| 1995 | TUANA COMPLEX | 80,638 | 59 km |
| 1990 | THORN CREEK | 70,365 | 70 km |
| 2019 | POT HOLE | 67,826 | 39 km |
| 1987 | BROWNS CRK | 66,024 | 22 km |
| 2011 | BIG HILL | 65,416 | 61 km |
| 1985 | CROWS NEST | 62,780 | 44 km |
| 2006 | SAILOR CAP | 62,699 | 41 km |
| 1986 | BLUE BUTTE | 62,445 | 31 km |
| 2017 | MAMMOTH CAVE | 50,391 | 93 km |
| 2012 | JACKS | 47,219 | 77 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 1.5 in | Wettest |
| February | 36°F (2°C) | 1.0 in | |
| March | 43°F (6°C) | 1.0 in | |
| April | 50°F (10°C) | 0.6 in | |
| May | 58°F (15°C) | 0.8 in | |
| June | 67°F (19°C) | 0.8 in | |
| July | 79°F (26°C) | 0.3 in | Warmest, Driest |
| August | 74°F (23°C) | 0.3 in | |
| September | 64°F (18°C) | 0.5 in | |
| October | 53°F (12°C) | 0.7 in | |
| November | 40°F (5°C) | 1.4 in | |
| December | 31°F (-0°C) | 1.3 in | Coldest |
Glenns Ferry has a seasonal temperature swing of 48°F / from 31°F in December to 79°F in July. Total annual precipitation is 10.1 inches, with January being the wettest month (1.5") and July the driest (0.3").