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Weather & Climate in Bloomington, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bloomington enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 38°F in January while summers reach 75°F in July. The area gets 285 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 38.4 inches. The area receives 8.6 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 820 feet.
Temperature
38°F Jan (3°C)
75°F Jul (24°C)
| Annual Average | 56.0°F |
| 4% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 285 days/yr |
Geography
| Elevation | 820 ft (250 m) |
| Area | 23.3 sq mi (60.2 km²) |
| Population Density | 3,389/sq mi |
| Coordinates | 39.1637°N, 86.5243°W |
| Timezone | America/Indiana/Indianapolis |
| County | Monroe County County |
| Nearest Airport | Indianapolis International (IND) 40 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 76.0 / 100 |
| Social Vulnerability | 30.1 / 100 |
| Community Resilience | 61.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
40 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Apr 18, 2008 | 7 km NNE of Bellmont, Illinois | M5.2 | 142 km | 14 km |
| Apr 18, 2008 | 9 km NNE of Bellmont, Illinois | M4.7 | 141 km | 15 km |
| Apr 21, 2008 | 7 km NNE of Bellmont, Illinois | M4.0 | 142 km | 18 km |
| Jan 24, 1990 | 6 km WNW of Alton, Indiana | M3.9 | 114 km | 10 km |
| Jun 17, 2021 | Illinois-Indiana border region | M3.8 | 99 km | 6 km |
| Nov 11, 1991 | 3 km W of Flat Rock, Illinois | M3.8 | 106 km | 0 km |
| Jan 27, 1990 | 6 km N of Alton, Indiana | M3.8 | 109 km | 5 km |
| Sep 19, 2017 | 4 km N of Bellmont, Illinois | M3.8 | 146 km | 12 km |
| Sep 12, 2004 | 4 km NW of Manilla, Indiana | M3.8 | 89 km | 2 km |
| Dec 20, 1990 | 5 km S of Stilesville, Indiana | M3.7 | 48 km | 5 km |
| Apr 25, 2008 | 8 km NNE of Bellmont, Illinois | M3.7 | 141 km | 13 km |
| Nov 20, 2012 | 7 km N of Bellmont, Illinois | M3.6 | 143 km | 19 km |
| Apr 14, 2000 | 4 km NW of Heritage Lake, Indiana | M3.6 | 69 km | 5 km |
| Jun 5, 2008 | 8 km WNW of Mount Carmel, Illinois | M3.4 | 139 km | 16 km |
| May 1, 2008 | 8 km NNE of Bellmont, Illinois | M3.3 | 140 km | 14 km |
| Dec 17, 1990 | Illinois-Indiana border region | M3.2 | 110 km | 10 km |
| Jul 18, 2008 | 6 km NNE of Bellmont, Illinois | M3.1 | 143 km | 18 km |
| Dec 16, 1996 | 3 km NNE of Terre Haute, Indiana | M3.1 | 84 km | 5 km |
| May 10, 2012 | 0 km NW of Emison, Indiana | M3.1 | 90 km | 11 km |
| Sep 9, 2017 | 4 km N of Bellmont, Illinois | M3.1 | 146 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
547 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 78 fatalities, 1,023 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 2, 2012 | EF4 | 86 km | 45.1 mi | 11 |
| Jun 11, 1998 | EF4 | 84 km | 13.2 mi | 0 |
| Jun 2, 1990 | EF4 | 41 km | 18.0 mi | 0 |
| Jun 2, 1990 | EF4 | 43 km | 11.0 mi | 1 |
| Apr 3, 1974 | EF4 | 96 km | 35.6 mi | 11 |
| Apr 3, 1974 | EF4 | 70 km | 35.6 mi | 4 |
| Apr 3, 1974 | EF4 | 99 km | 18.9 mi | 0 |
| May 14, 1972 | EF4 | 78 km | 30.0 mi | 0 |
| Apr 11, 1965 | EF4 | 100 km | 45.7 mi | 28 |
| Apr 25, 1961 | EF4 | 78 km | 63.1 mi | 0 |
| Mar 31, 2023 | EF3 | 55 km | 5.5 mi | 0 |
| Mar 31, 2023 | EF3 | 23 km | 5.9 mi | 2 |
| Mar 2, 2012 | EF3 | 97 km | 8.7 mi | 3 |
| May 25, 2011 | EF3 | 37 km | 6.8 mi | 0 |
| Mar 8, 2009 | EF3 | 36 km | 1.1 mi | 0 |
| Jun 3, 2008 | EF3 | 80 km | 9.7 mi | 1 |
| Nov 15, 2005 | EF3 | 65 km | 10.0 mi | 0 |
| Nov 15, 2005 | EF3 | 75 km | 12.0 mi | 0 |
| May 30, 2004 | EF3 | 93 km | 15.0 mi | 1 |
| Sep 20, 2002 | EF3 | 11 km | 112.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: WUI 3 03 (3,372 acres, 2003).
| Year | Name | Acres Burned | Distance |
| 2003 | WUI 3 03 | 3,372 | 96 km |
| 2010 | WUI UNIT 28K | 3,230 | 97 km |
| 1999 | UNNAMED | 3,122 | 95 km |
| 2002 | UNIT 8 | 2,753 | 100 km |
| 2005 | UNIT 3 05 | 2,511 | 96 km |
| 2011 | WUI UNITS 0 AND 1 2011 | 2,215 | 100 km |
| 2004 | UNIT 19 | 2,004 | 100 km |
| 2003 | UNIT 8 03 | 1,971 | 99 km |
| 2008 | FY 09 UNIT 42 RX FALL 2008 | 1,942 | 97 km |
| 2021 | UNNAMED | 1,547 | 23 km |
| 1995 | UNNAMED | 1,462 | 98 km |
| 2010 | TRACER | 1,408 | 96 km |
| 2007 | UNNAMED | 1,102 | 44 km |
| 1995 | UNNAMED | 1,019 | 96 km |
| 2008 | FY 09 UNIT 3 RX FALL 2008 | 949 | 97 km |
| 2004 | UNIT 30 | 938 | 97 km |
| 2002 | UNIT 3 | 929 | 96 km |
| 2016 | UNNAMED | 898 | 23 km |
| 2004 | UNIT 11 | 866 | 99 km |
| 2008 | FY 09 UNIT 43 FALL 2008 RX CHARGE CODE | 753 | 98 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 2.6 in | Driest |
| February | 32°F (-0°C) | 2.7 in | Coldest |
| March | 42°F (6°C) | 3.9 in | |
| April | 52°F (11°C) | 4.4 in | |
| May | 62°F (17°C) | 5.0 in | Wettest |
| June | 71°F (22°C) | 4.0 in | |
| July | 75°F (24°C) | 4.5 in | Warmest |
| August | 73°F (23°C) | 3.9 in | |
| September | 67°F (19°C) | 3.4 in | |
| October | 55°F (13°C) | 3.2 in | |
| November | 44°F (7°C) | 3.9 in | |
| December | 33°F (1°C) | 3.4 in |
Bloomington has a seasonal temperature swing of 44°F / from 32°F in February to 75°F in July. Total annual precipitation is 44.9 inches, with May being the wettest month (5.0") and January the driest (2.6").