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Wisconsin winter weather risk

72 counties scored 1 rated Very High

Milwaukee County has the highest winter weather risk in Wisconsin, scoring 96.8 out of 100 — rated "Very High" by FEMA's National Risk Index.

# County NRI score Rating NOAA events
2016–2026
1 Milwaukee County 96.8 Very High 0
2 Dane County 93.6 Relatively High 0
3 Waukesha County 86.5 Relatively High 0
4 Bayfield County 84.6 Relatively Moderate 0
5 Brown County 83.9 Relatively Moderate 0
6 Vilas County 78.3 Relatively Moderate 0
7 Outagamie County 78.1 Relatively Moderate 0
8 Ashland County 77.9 Relatively Moderate 0
9 Oneida County 77.7 Relatively Moderate 0
10 Winnebago County 77.7 Relatively Moderate 0
11 Sawyer County 75.5 Relatively Moderate 0
12 Racine County 74.8 Relatively Moderate 0
13 Eau Claire County 71.9 Relatively Moderate 0
14 Marathon County 71.3 Relatively Moderate 0
15 Marinette County 68.2 Relatively Moderate 0
16 Fond du Lac County 68.1 Relatively Moderate 0
17 La Crosse County 68 Relatively Moderate 0
18 Sheboygan County 67 Relatively Moderate 0
19 St. Croix County 65.9 Relatively Moderate 0
20 Washington County 63.6 Relatively Moderate 0
21 Dodge County 63.5 Relatively Moderate 0
22 Lincoln County 62.9 Relatively Moderate 0
23 Iron County 62.3 Relatively Moderate 0
24 Manitowoc County 62.2 Relatively Moderate 0
25 Chippewa County 61.6 Relatively Moderate 0
26 Rock County 61.2 Relatively Moderate 0
27 Waupaca County 60.6 Relatively Low 0
28 Jefferson County 58.9 Relatively Low 0
29 Clark County 57.3 Relatively Low 0
30 Polk County 56.2 Relatively Low 0
31 Barron County 55.9 Relatively Low 0
32 Portage County 55.3 Relatively Low 0
33 Douglas County 55.2 Relatively Low 0
34 Monroe County 54.6 Relatively Low 0
35 Wood County 54.1 Relatively Low 0
36 Walworth County 53.5 Relatively Low 0
37 Columbia County 51.7 Relatively Low 0
38 Grant County 50.5 Relatively Low 0
39 Langlade County 49.8 Relatively Low 0
40 Sauk County 44.7 Relatively Low 0
41 Adams County 44.6 Relatively Low 0
42 Ozaukee County 44.2 Relatively Low 0
43 Pierce County 43.7 Relatively Low 0
44 Dunn County 43.3 Relatively Low 0
45 Trempealeau County 42.5 Relatively Low 0
46 Burnett County 41.8 Relatively Low 0
47 Juneau County 41.2 Relatively Low 0
48 Forest County 39.4 Relatively Low 0
49 Jackson County 39.1 Relatively Low 0
50 Oconto County 38.6 Relatively Low 0
51 Vernon County 36 Relatively Low 0
52 Shawano County 35.8 Relatively Low 0
53 Taylor County 34.7 Relatively Low 0
54 Green Lake County 34.4 Relatively Low 0
55 Calumet County 33.7 Relatively Low 0
56 Waushara County 33.3 Relatively Low 0
57 Washburn County 32.4 Relatively Low 0
58 Rusk County 31 Relatively Low 0
59 Green County 30 Relatively Low 0
60 Richland County 27 Relatively Low 0
61 Marquette County 26.2 Relatively Low 0
62 Kenosha County 25.9 Relatively Low 0
63 Door County 25 Relatively Low 0
64 Buffalo County 23.6 Very Low 0
65 Iowa County 21.5 Very Low 0
66 Kewaunee County 20.1 Very Low 0
67 Lafayette County 18.8 Very Low 0
68 Florence County 18 Very Low 0
69 Crawford County 15.7 Very Low 0
70 Pepin County 14.4 Very Low 0
71 Price County 12.1 Very Low 0
72 Menominee County 8.2 Very Low 0

Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.

Winter Weather risk nationally:

Top 50 US counties

Other hazard risks in Wisconsin:

WildfireInland FloodingCoastal FloodingEarthquakeHeat WaveTornadoHurricaneHailStrong WindIce StormCold WaveLightningDroughtLandslideAvalancheTsunamiVolcanic Activity

Frequently asked questions

What is the highest winter weather risk county in Wisconsin?

Milwaukee County, WI has the highest winter weather risk in Wisconsin, with a FEMA National Risk Index score of 96.8 out of 100 (rated "Very High").

How many counties in Wisconsin are rated Very High for winter weather risk?

1 of 72 scored Wisconsin counties are rated "Very High" for winter weather risk by FEMA's National Risk Index.

What causes winter weather risk in Wisconsin?

Winter weather risk captures expected losses from heavy snow, blizzards, and mixed precipitation. Highest scores appear in the Great Lakes snowbelt, northern Rockies, and interior Northeast, where lake-effect and orographic snowfall is frequent. Winter weather impacts transportation networks, utilities, agriculture, and population health.