Wisconsin September Weather

Wisconsin weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide September Averages
High temperature	70.6 °F
Low temperature	48.4 °F
Precipitation	3.6 inches

Wisconsin Cities

September weather averages for various places in Wisconsin, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Appleton	71.8	51.0	101	25	3.2	0.0
Baraboo	73.7	47.4	99	20	3.7	0.0
Beloit	74.1	52.1	100	23	3.8	0.0
Dodgeville	72.4	49.6	97	18	3.7	0.0
Eau Claire	72.2	49.7	101	22	3.6	0.0
Fond Du Lac	71.0	52.3	101	22	3.2	0.0
Fort Atkinson	74.0	51.2	98	28	3.3	0.0
Green Bay	71.9	49.6	97	24	3.2	0.0
Hartford	72.2	49.0	97	23	3.1	0.0
Janesville	75.1	50.8	101	27	3.7	0.0
Kenosha	71.9	55.9	100	30	3.6	0.0
La Crosse	74.6	53.4	101	23	3.6	0.0
Lake Mills	74.4	52.5	100	24	3.5	0.0
Madison	73.2	51.0	99	25	3.4	0.0
Manitowoc	69.6	53.7	97	26	2.4	0.0
Marinette	70.2	51.7	98	21	3.3	0.0
Marshfield	71.0	48.9	98	20	3.9	0.0
Menomonie	72.6	49.8	97	12	3.6	0.0
Merrill	69.8	46.3	97	18	3.9	0.0
Milwaukee	72.6	55.9	98	28	3.2	0.0
Minocqua	67.3	44.2	95	19	3.6	0.0
New London	72.3	49.0	101	19	3.4	0.0
Oconomowoc	73.5	51.6	98	26	3.4	0.0
Oshkosh	72.6	53.0	99	25	3.0	0.0
Plymouth	71.9	50.8	98	25	2.8	0.0
Portage	72.9	51.0	103	17	3.6	0.0
Prairie du Chien	74.5	51.8	104	20	4.0	0.0
Racine	70.5	56.8	102	28	3.3	0.0
Reedsburg	72.9	50.6	98	24	3.7	n/a
Rhinelander	68.9	46.7	98	21	4.1	0.0
Rice Lake	70.8	48.0	95	22	3.3	0.0
River Falls	71.6	49.2	103	22	3.3	0.0
Shawano	71.5	48.0	100	20	3.6	0.0
Sheboygan	71.0	53.7	101	28	2.7	0.0
Sparta	73.1	49.1	99	19	3.7	0.0
St. Croix Falls	73.2	50.2	98	24	3.5	0.0
Stevens Point	70.3	49.6	100	13	3.6	0.0
Sturgeon Bay	69.8	51.5	96	26	3.1	0.0
Superior	66.6	50.2	97	19	3.4	0.0
Watertown	73.1	51.0	100	20	3.5	0.0
Waupaca	71.7	49.5	101	18	3.3	0.0
Wausau	70.1	49.3	99	18	3.8	0.0
Whitewater	73.8	50.1	100	26	3.5	0.0
Wisconsin Dells	73.1	48.0	101	24	3.8	0.0