Iowa December Weather

Iowa weather averages and all-time records in the month of December from 1991–2020 based on data made available by the NOAA.
State:
Month:
Statewide December Averages
High temperature 33.2 °F
Low temperature 16.7 °F
Precipitation 1.4 inches
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Iowa Cities
December weather averages for various places in Iowa, from 1991–2020.
City Average (°F) Record (°F) Monthly (inches)
High Low High Low Precipitation Snow
Ames 33.8 16.7 74 -24 1.1 n/a
Burlington 37.7 22.3 73 -22 1.8 n/a
Carroll 33.4 15.6 71 -26 1.4 6.8
Cedar Rapids 34.5 19.4 69 -28 1.6 8.3
Davenport 36.5 20.7 75 -24 2.0 8.8
Des Moines 36.0 19.9 74 -26 1.6 8.2
Dubuque 31.8 17.4 69 -25 1.8 10.5
Fort Madison 38.0 23.4 70 -19 2.0 5.7
Iowa City 35.7 19.8 75 -27 1.5 n/a
Iowa Falls 31.3 14.8 70 -31 1.4 7.5
Lamoni 37.2 19.8 74 -27 1.6 6.6
Mason City 29.9 13.8 69 -26 1.3 9.3
Northwood 28.8 12.8 66 -27 1.2 6.9
Ottumwa 36.5 20.3 75 -32 1.4 n/a
Rockwell City 32.1 14.8 70 -32 1.3 7.4
Sac City 31.9 14.6 69 -28 1.2 7.4
Sioux City 34.0 15.1 70 -24 1.0 7.6
Spirit Lake 29.5 14.5 65 -27 0.9 8.5
Waterloo 32.6 15.7 74 -29 1.4 9.9
Webster City 33.1 14.2 69 -28 1.3 8.0