Sign In Register

Weather & Climate in Delphos, IA

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Delphos experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 22°F in January while summers reach 74°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 37.0 inches. The area receives 20.5 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 1,137 feet.

Temperature

22°F Jan (-6°C) 74°F Jul (23°C)
Annual Average49.6°F
8% below US avg
January Average22°F (-6°C)
July Average74°F (23°C)
Sunny Days275 days/yr

Geography

Elevation1,137 ft (347 m)
Area0.2 sq mi (0.6 km²)
Population Density100/sq mi
Coordinates40.6632°N, 94.3396°W
TimezoneAmerica/Chicago
CountyRinggold County County
Nearest AirportDes Moines International (DSM)
67 miles away

Precipitation & Snow

Annual Rainfall 37.0"
3% below US avg
Snowfall 20.5"
Wettest Month (Jul) 4.33"
Driest Month (Jan) 0.83"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score14.2 / 100
Social Vulnerability10.6 / 100
Community Resilience47.6 / 100

Hazard Breakdown

Tornado Relatively Low
Hurricane Very Low
Earthquake Very Low
Wildfire Very Low
Flood Very Low
Hail Relatively Low
Strong Wind Relatively Low
Heat Wave Relatively Low
Winter Weather Very Low
Lightning Very Low
Ice Storm Very Low
Drought Relatively High
Cold Wave Relatively Low
Landslide Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.

Dec 17, 2009 2 km NW of Auburn, Nebraska M3.6 132 km 5 km
Jul 16, 2004 6 km SSE of Riverton, Iowa M3.5 102 km 5 km
Feb 11, 1995 6 km E of Clearmont, Missouri M3.1 55 km 5 km
Mar 31, 1993 2 km SE of Nemaha, Nebraska M2.9 117 km 5 km
Jul 15, 2025 3 km W of Hale, Missouri M2.5 144 km 8 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

553 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 25 fatalities, 277 injuries.

Date Rating Distance Path Fatalities
Jun 27, 1953 EF5 93 km 0.1 mi 1
May 21, 2024 EF4 56 km 40.7 mi 5
Mar 5, 2022 EF4 65 km 70.6 mi 6
May 29, 2004 EF4 87 km 22.0 mi 3
Apr 8, 1999 EF4 41 km 56.0 mi 0
Apr 8, 1999 EF4 52 km 49.0 mi 0
May 27, 1995 EF4 46 km 57.0 mi 0
May 24, 1989 EF4 48 km 49.0 mi 0
Jun 7, 1984 EF4 38 km 134.0 mi 3
Jun 2, 1980 EF4 36 km 31.2 mi 0
Mar 29, 1979 EF4 71 km 18.8 mi 0
Apr 21, 1973 EF4 76 km 14.6 mi 0
Jun 22, 1964 EF4 94 km 11.9 mi 0
Apr 12, 1964 EF4 75 km 13.1 mi 1
May 10, 1959 EF4 96 km 41.1 mi 0
Apr 5, 1954 EF4 89 km 6.3 mi 0
May 10, 1953 EF4 88 km 6.4 mi 0
May 21, 2024 EF3 76 km 33.9 mi 0
Mar 5, 2022 EF3 86 km 11.3 mi 1
Aug 20, 2019 EF3 95 km 5.4 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

4 wildfires (100+ acres) recorded within 100 km. Largest: MOSQR-FY20-RX-WUI (964 acres, 2020).

Year Name Acres Burned Distance
2020 MOSQR-FY20-RX-WUI 964 99 km
2016 SQR BM SL DESOTO 2016 WUI RX 866 99 km
1988 NORTH POOL 698 100 km
2020 UNNAMED 645 100 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 22°F (-6°C) 0.8 in Coldest, Driest
February 28°F (-2°C) 0.9 in
March 40°F (4°C) 2.2 in
April 52°F (11°C) 3.0 in
May 62°F (17°C) 4.3 in
June 71°F (22°C) 4.3 in
July 74°F (23°C) 4.3 in Warmest, Wettest
August 74°F (23°C) 4.2 in
September 65°F (19°C) 4.2 in
October 54°F (12°C) 3.0 in
November 39°F (4°C) 2.1 in
December 27°F (-3°C) 1.3 in

Delphos has a seasonal temperature swing of 52°F / from 22°F in January to 74°F in July. Total annual precipitation is 34.6 inches, with July being the wettest month (4.3") and January the driest (0.8").

View full profile of Delphos, IA →