Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Udell 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. 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 36.0 inches. The area receives 21.5 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 996 feet.
Temperature
22°F Jan (-5°C)75°F Jul (24°C)
Annual Average
49.9°F
8% below US avg
January Average
22°F (-5°C)
July Average
75°F (24°C)
Sunny Days
275 days/yr
Geography
Elevation
996 ft (304 m)
Area
0.3 sq mi (0.8 km²)
Population Density
71/sq mi
Coordinates
40.7801°N, 92.7432°W
Timezone
America/Chicago
County
Appanoose County County
Nearest Airport
Ottumwa Regional (OTM) 27 miles away
Precipitation & Snow
Annual Rainfall36.0"
5% below US avg
Snowfall21.5"
Wettest Month (Jul)4.61"
Driest Month (Feb)0.98"
Air Quality
AQI Median
43.0
Rating
Good
Natural Hazard Risk
Overall Risk
Very Low
Risk Score
41.2 / 100
Social Vulnerability
70.0 / 100
Community Resilience
60.0 / 100
Hazard Breakdown
Tornado
Relatively Moderate
Hurricane
Very Low
Earthquake
Very Low
Wildfire
Very Low
Flood
Very Low
Hail
Relatively Low
Strong Wind
Relatively Moderate
Heat Wave
Relatively Low
Winter Weather
Very Low
Lightning
Relatively Low
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: M2.5.
Jul 15, 2025
3 km W of Hale, Missouri
M2.5
142 km
8 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
410 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF4. Total: 13 fatalities, 155 injuries.
Date
Rating
Distance
Path
Fatalities
Mar 31, 2023
EF4
84 km
19.9 mi
0
Apr 21, 1973
EF4
85 km
14.6 mi
0
Apr 20, 1973
EF4
97 km
3.8 mi
1
Jan 24, 1967
EF4
46 km
25.7 mi
0
May 20, 1959
EF4
35 km
17.2 mi
0
May 10, 1953
EF4
50 km
6.4 mi
0
Mar 31, 2023
EF3
47 km
26.1 mi
0
Mar 5, 2022
EF3
57 km
11.3 mi
1
Aug 20, 2019
EF3
84 km
5.4 mi
0
May 27, 2019
EF3
64 km
7.3 mi
0
Jul 19, 2018
EF3
77 km
9.2 mi
0
Jun 22, 2015
EF3
53 km
11.1 mi
0
Apr 8, 1999
EF3
27 km
16.0 mi
0
Apr 8, 1999
EF3
73 km
39.0 mi
0
May 1, 1973
EF3
94 km
3.6 mi
2
Apr 20, 1973
EF3
70 km
9.5 mi
0
Apr 21, 1967
EF3
73 km
0.1 mi
0
Apr 16, 1967
EF3
55 km
19.4 mi
2
Jan 24, 1967
EF3
57 km
25.0 mi
0
Oct 14, 1966
EF3
89 km
29.5 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
1 wildfire (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
100 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
22°F (-5°C)
1.1 in
Coldest
February
28°F (-2°C)
1.0 in
Driest
March
39°F (4°C)
2.5 in
April
51°F (11°C)
3.4 in
May
62°F (17°C)
4.3 in
June
71°F (22°C)
4.3 in
July
75°F (24°C)
4.6 in
Warmest, Wettest
August
74°F (23°C)
4.1 in
September
65°F (18°C)
4.3 in
October
54°F (12°C)
3.0 in
November
40°F (4°C)
2.2 in
December
27°F (-3°C)
1.5 in
Udell has a seasonal temperature swing of 52°F / from 22°F in January to 75°F in July. Total annual precipitation is 36.2 inches, with July being the wettest month (4.6") and February the driest (1.0").