As of 08:24 CDT

Ottumwa, IA weather in December

76°

Ottumwa, Sunday, 9 August, 08:24

Overcast. Feels like 78°. High 99°, low 70°.

Pressure29.88 inHg

Wind1 mph E

Humidity89%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

In December, Ottumwa, IA averages a high of 36.4° and a low of 22.1°. About 1.9 inches of precipitation fall over the month (7 wet days). The record high is 72.1° (2021) and the record low -27.9° (1989). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	40.5°	27.1°	33%	62.6° (1970)	4.3° (1985)
2	41.7°	27.3°	23%	63.5° (1973)	-4.9° (1985)
3	40.6°	25.7°	22%	69.4° (2012)	-8.3° (1985)
4	39.7°	25.7°	15%	68.2° (1998)	-4° (2025)
5	40.1°	25.3°	23%	67.6° (2001)	4.5° (1990)
6	36.9°	23.7°	23%	59.2° (1966)	-2° (2005)
7	36.5°	22.8°	22%	58.5° (2023)	-10.5° (2005)
8	37°	23°	23%	63.7° (1991)	-0.2° (2025)
9	37.2°	22.6°	30%	55.8° (1993)	-6.5° (1977)
10	36.7°	21.7°	20%	57.4° (2015)	-11.4° (1977)
11	36.5°	21.7°	25%	60.8° (1965)	-11° (1972)
12	37°	22.8°	18%	60.8° (1991)	-17.5° (2000)
13	37.2°	22.8°	25%	61.5° (2015)	-19.1° (2000)
14	37.8°	22.8°	27%	61.7° (1975)	-12.6° (1985)
15	37.2°	23.9°	25%	72.1° (2021)	-11.9° (1989)
16	36.1°	21.9°	18%	65.8° (2021)	-9.4° (1963)
17	34.3°	20.1°	15%	52.7° (1977)	-13.5° (1972)
18	35.2°	21°	20%	58.1° (2002)	-17° (1983)
19	35.6°	20.5°	17%	55.6° (1988)	-25.2° (1983)
20	35.1°	20.5°	30%	57.4° (1967)	-16.8° (1983)
21	34.7°	20.3°	22%	60.4° (1967)	-18.6° (1963)
22	34.7°	20.5°	22%	54.3° (1979)	-18° (1989)
23	34.2°	20.1°	18%	60.3° (1965)	-27.9° (1989)
24	32.9°	18.5°	27%	61.5° (2021)	-24.2° (1983)
25	33.3°	18.9°	8%	60.3° (2019)	-20° (1983)
26	34.5°	20.3°	18%	59.4° (2008)	-12.3° (1983)
27	36°	21.6°	30%	59.5° (2008)	-5.3° (2000)
28	37.4°	23.2°	32%	65.8° (1984)	-6.9° (1961)
29	34.7°	21°	22%	64° (1984)	-8.9° (1983)
30	34.5°	18.9°	28%	61.9° (1965)	-10.3° (1983)
31	32.4°	17.8°	23%	61.9° (1965)	-13.9° (1968)