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Weather & Climate in Bloomfield, IA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bloomfield experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 76°F in July. The area gets 275 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 39.1 inches. The area receives 24.2 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 834 feet.
Temperature
23°F Jan (-5°C)
76°F Jul (24°C)
| Annual Average | 51.2°F |
| 5% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 834 ft (254 m) |
| Area | 2.3 sq mi (5.9 km²) |
| Population Density | 1,200/sq mi |
| Coordinates | 40.7491°N, 92.4170°W |
| Timezone | America/Chicago |
| County | Davis County County |
| Nearest Airport | Ottumwa Regional (OTM) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 50.4 / 100 |
| Social Vulnerability | 80.8 / 100 |
| Community Resilience | 7.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.9.
| Feb 8, 2004 | 6 km SSW of Stoutsville, Missouri | M2.9 | 147 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
416 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 14 fatalities, 211 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 31, 2023 | EF4 | 70 km | 19.9 mi | 0 |
| May 13, 1995 | EF4 | 95 km | 50.0 mi | 0 |
| Apr 20, 1973 | EF4 | 91 km | 3.8 mi | 1 |
| Jan 24, 1967 | EF4 | 40 km | 25.7 mi | 0 |
| May 20, 1959 | EF4 | 62 km | 17.2 mi | 0 |
| May 10, 1953 | EF4 | 78 km | 6.4 mi | 0 |
| Mar 31, 2023 | EF3 | 35 km | 26.1 mi | 0 |
| Mar 5, 2022 | EF3 | 84 km | 11.3 mi | 1 |
| May 27, 2019 | EF3 | 37 km | 7.3 mi | 0 |
| Jul 19, 2018 | EF3 | 90 km | 9.2 mi | 0 |
| Jun 22, 2015 | EF3 | 75 km | 11.1 mi | 0 |
| Apr 8, 1999 | EF3 | 0 km | 16.0 mi | 0 |
| Apr 8, 1999 | EF3 | 93 km | 7.5 mi | 0 |
| Apr 8, 1999 | EF3 | 99 km | 39.0 mi | 0 |
| May 15, 1998 | EF3 | 83 km | 47.0 mi | 0 |
| Apr 13, 1974 | EF3 | 95 km | 0.1 mi | 0 |
| Apr 13, 1974 | EF3 | 96 km | 11.0 mi | 0 |
| May 1, 1973 | EF3 | 69 km | 3.6 mi | 2 |
| Apr 20, 1973 | EF3 | 47 km | 9.5 mi | 0 |
| Apr 21, 1967 | EF3 | 50 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.1 in | Coldest |
| February | 28°F (-2°C) | 1.0 in | Driest |
| March | 40°F (4°C) | 2.5 in | |
| April | 51°F (11°C) | 3.5 in | |
| May | 62°F (17°C) | 4.2 in | |
| June | 71°F (22°C) | 4.1 in | |
| July | 76°F (24°C) | 4.6 in | Warmest, Wettest |
| August | 74°F (23°C) | 4.2 in | |
| September | 66°F (19°C) | 4.5 in | |
| October | 54°F (12°C) | 3.0 in | |
| November | 40°F (4°C) | 2.2 in | |
| December | 28°F (-2°C) | 1.6 in |
Bloomfield has a seasonal temperature swing of 53°F / from 23°F in January to 76°F in July. Total annual precipitation is 36.6 inches, with July being the wettest month (4.6") and February the driest (1.0").