Weather & Climate in Barnes City, IA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Barnes City experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 22°F in January while summers reach 75°F in July. Annual precipitation totals 37.4 inches. The area receives 30.0 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 902 feet.
Temperature
22°F Jan (-6°C)
75°F Jul (24°C)
| Annual Average | 50.1°F |
| 7% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 902 ft (275 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 237/sq mi |
| Coordinates | 41.5070°N, 92.4695°W |
| Timezone | America/Chicago |
| County | Poweshiek County County |
| Nearest Airport | Ottumwa Regional (OTM) 28 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 31.3 / 100 |
| Social Vulnerability | 21.4 / 100 |
| Community Resilience | 84.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tornado History
604 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 20 fatalities, 423 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 31, 2023 | EF4 | 43 km | 19.9 mi | 0 |
| Sep 28, 1986 | EF4 | 98 km | 20.0 mi | 0 |
| Aug 12, 1974 | EF4 | 36 km | 2.0 mi | 0 |
| Jun 18, 1974 | EF4 | 99 km | 15.3 mi | 2 |
| Aug 26, 1965 | EF4 | 91 km | 4.7 mi | 1 |
| Apr 30, 1954 | EF4 | 89 km | 80.4 mi | 0 |
| Mar 31, 2023 | EF3 | 51 km | 26.1 mi | 0 |
| Mar 5, 2022 | EF3 | 99 km | 11.3 mi | 1 |
| Aug 20, 2019 | EF3 | 92 km | 5.4 mi | 0 |
| Jul 19, 2018 | EF3 | 39 km | 9.2 mi | 0 |
| Jul 19, 2018 | EF3 | 79 km | 8.4 mi | 0 |
| Jun 22, 2015 | EF3 | 66 km | 11.1 mi | 0 |
| May 21, 2004 | EF3 | 81 km | 3.0 mi | 0 |
| Apr 8, 1999 | EF3 | 84 km | 16.0 mi | 0 |
| May 15, 1998 | EF3 | 67 km | 47.0 mi | 0 |
| Mar 13, 1990 | EF3 | 95 km | 9.0 mi | 0 |
| Sep 16, 1978 | EF3 | 78 km | 31.8 mi | 6 |
| May 4, 1977 | EF3 | 68 km | 17.8 mi | 0 |
| Nov 9, 1975 | EF3 | 77 km | 39.4 mi | 0 |
| May 31, 1971 | EF3 | 67 km | 9.4 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
5 wildfires (100+ acres) recorded within 100 km. Largest: NEAL SMITH WUI 2016 1 (1,050 acres, 2016).
| Year | Name | Acres Burned | Distance |
| 2016 | NEAL SMITH WUI 2016 1 | 1,050 | 68 km |
| 2009 | UNNAMED | 939 | 44 km |
| 2010 | FOLEY | 786 | 44 km |
| 2011 | ACE AUTO | 676 | 47 km |
| 2011 | IRCP WUI ROFAE #2 FY11 | 510 | 45 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.0 in | Coldest, Driest |
| February | 26°F (-3°C) | 1.2 in | |
| March | 38°F (3°C) | 2.2 in | |
| April | 50°F (10°C) | 3.8 in | |
| May | 62°F (16°C) | 4.8 in | |
| June | 71°F (22°C) | 5.5 in | Wettest |
| July | 75°F (24°C) | 4.1 in | Warmest |
| August | 73°F (23°C) | 4.4 in | |
| September | 65°F (18°C) | 3.7 in | |
| October | 53°F (12°C) | 3.1 in | |
| November | 39°F (4°C) | 2.1 in | |
| December | 27°F (-3°C) | 1.6 in |
Barnes City has a seasonal temperature swing of 54°F / from 22°F in January to 75°F in July. Total annual precipitation is 37.4 inches, with June being the wettest month (5.5") and January the driest (1.0").