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Weather & Climate in Jerome, ID
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jerome experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 29°F in January while summers reach 75°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 10.5 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 3,763 feet.
Temperature
29°F Jan (-2°C)
75°F Jul (24°C)
| Annual Average | 50.1°F |
| 7% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 3,763 ft (1,147 m) |
| Area | 5.5 sq mi (14.3 km²) |
| Population Density | 2,242/sq mi |
| Coordinates | 42.7181°N, 114.5158°W |
| Timezone | America/Boise |
| County | Jerome County County |
| Nearest Airport | Joslin Field/Magic Valley Regional (TWF) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 33.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 21.5 / 100 |
| Social Vulnerability | 68.9 / 100 |
| Community Resilience | 3.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jan 13, 1999 | 60 km NW of Wells, Nevada | M3.8 | 150 km | 5 km |
| Nov 4, 2002 | 37 km NE of Mountain Home, Idaho | M3.5 | 107 km | 5 km |
| Jul 23, 2000 | 64 km ESE of Owyhee, Nevada | M3.3 | 141 km | 0 km |
| Dec 17, 1992 | 30 km WSW of Mackay, Idaho | M3.1 | 129 km | 5 km |
| Jul 22, 2010 | 47 km NE of Owyhee, Nevada | M3.0 | 111 km | 0 km |
| Aug 19, 1991 | 13 km W of Mackay, Idaho | M3.0 | 146 km | 5 km |
| Feb 6, 2002 | 31 km N of Glenns Ferry, Idaho | M2.8 | 82 km | 5 km |
| Aug 23, 2011 | 30 km ENE of Sun Valley, Idaho | M2.7 | 127 km | 9 km |
| Apr 2, 2020 | 14 km NW of Fairfield, Idaho | M2.6 | 88 km | 10 km |
| Jan 28, 2014 | 26 km S of Clayton, Idaho | M2.6 | 145 km | 12 km |
| Apr 18, 2003 | 55 km SSE of Oakley, Idaho | M2.6 | 127 km | 3 km |
| Apr 13, 2018 | 62 km NNW of Wells, Nevada | M2.5 | 136 km | 4 km |
| Jun 18, 2023 | 40 km S of Stanley, Idaho | M2.5 | 132 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
57 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.
| Date | Rating | Distance | Path | Fatalities |
| May 18, 1991 | EF2 | 70 km | 0.2 mi | 0 |
| Jun 9, 1990 | EF2 | 3 km | 0.2 mi | 0 |
| Sep 11, 1968 | EF2 | 50 km | 0.5 mi | 0 |
| Jun 10, 1990 | EF1 | 26 km | 0.2 mi | 0 |
| Apr 20, 1988 | EF1 | 4 km | 1.0 mi | 0 |
| Apr 20, 1988 | EF1 | 36 km | 1.0 mi | 0 |
| Jul 21, 1987 | EF1 | 53 km | 0.2 mi | 0 |
| Aug 10, 1986 | EF1 | 68 km | 2.0 mi | 0 |
| Jun 24, 1986 | EF1 | 28 km | 0.5 mi | 0 |
| Sep 8, 1985 | EF1 | 17 km | 0.2 mi | 0 |
| May 2, 1985 | EF1 | 24 km | 0.1 mi | 0 |
| Jun 7, 1972 | EF1 | 67 km | 0.5 mi | 0 |
| Jul 5, 1961 | EF1 | 67 km | 5.1 mi | 0 |
| Jun 2, 1961 | EF1 | 91 km | 0.1 mi | 0 |
| Jun 5, 1957 | EF1 | 30 km | 0.1 mi | 0 |
| Jun 3, 1956 | EF1 | 31 km | 0.1 mi | 0 |
| Jul 25, 2024 | EF0 | 69 km | 0.6 mi | 0 |
| Aug 2, 2019 | EF0 | 80 km | 1.0 mi | 0 |
| May 27, 2019 | EF0 | 85 km | 0.5 mi | 0 |
| May 7, 2019 | EF0 | 31 km | 1.5 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 (53 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 53 km |
| Wapi Lava Field | Shield | 1,604 m (5,262 ft) | -300 | 107 km |
| Craters of the Moon | Pyroclastic cone(s) | 2,005 m (6,578 ft) | -130 | 114 km |
| Hell's Half Acre | Shield | 1,631 m (5,351 ft) | -3250 | 189 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 | 91 km |
| 2010 | LONG BUTTE | 302,546 | 46 km |
| 2005 | CLOVER | 199,023 | 58 km |
| 1996 | RICHFIELDS | 178,385 | 60 km |
| 2012 | KINYON ROAD | 171,409 | 56 km |
| 1992 | BLACK RIDGE | 147,833 | 70 km |
| 2013 | BEAVER CREEK | 111,286 | 98 km |
| 2012 | FLAT TOP 2 | 102,340 | 61 km |
| 2020 | BADGER | 86,836 | 60 km |
| 2012 | CAVE CANYON | 84,780 | 57 km |
| 1995 | TUANA COMPLEX | 80,638 | 81 km |
| 1990 | THORN CREEK | 70,365 | 53 km |
| 2019 | POT HOLE | 67,826 | 77 km |
| 1987 | BROWNS CRK | 66,024 | 81 km |
| 2018 | SHARPS | 63,895 | 98 km |
| 2007 | HIGHWAY 93 COMPLEX (WEST BASIN) | 63,143 | 91 km |
| 1985 | CROWS NEST | 62,780 | 71 km |
| 2006 | SAILOR CAP | 62,699 | 66 km |
| 1986 | BLUE BUTTE | 62,445 | 64 km |
| 2007 | MURPHY COMPLEX (SCOTT CREEK) | 59,642 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 1.3 in | Coldest, Wettest |
| February | 33°F (0°C) | 0.9 in | |
| March | 41°F (5°C) | 1.1 in | |
| April | 48°F (9°C) | 0.8 in | |
| May | 56°F (13°C) | 1.0 in | |
| June | 65°F (18°C) | 0.8 in | |
| July | 75°F (24°C) | 0.2 in | Warmest, Driest |
| August | 70°F (21°C) | 0.3 in | |
| September | 60°F (16°C) | 0.5 in | |
| October | 50°F (10°C) | 0.7 in | |
| November | 38°F (3°C) | 1.3 in | |
| December | 29°F (-2°C) | 1.2 in |
Jerome has a seasonal temperature swing of 46°F / from 29°F in January to 75°F in July. Total annual precipitation is 10.3 inches, with January being the wettest month (1.3") and July the driest (0.2").