countyscore

Weather & Climate · Illinois

Best Weather Counties in Illinois 2026

Ranked by temperatures, precipitation, and extreme weather frequency.

Top 10 — Weather & Climate in Illinois

Score reflects weather & climate only — not overall county quality.

1Union County, IL
64.7
2Alexander County, IL
63.7
3Johnson County, IL
63
4Pulaski County, IL
63
5Jefferson County, IL
62.8
6Madison County, IL
62.1
7Massac County, IL
60.9
8Clinton County, IL
60.7
9Bond County, IL
60.6
10Saline County, IL
60

All Illinois Counties — Weather & Climate Rankings

102 counties ranked by weather & climate score. Overall Score shown for context.

#CountyWeather & Climate ScoreOverall Score
1Union County, IL
64.7
57.4
2Alexander County, IL
63.7
62.2
3Johnson County, IL
63
67.7
4Pulaski County, IL
63
62.9
5Jefferson County, IL
62.8
51.7
6Madison County, IL
62.1
38.1
7Massac County, IL
60.9
43.2
8Clinton County, IL
60.7
52
9Bond County, IL
60.6
55.2
10Saline County, IL
60
56.8
11Wayne County, IL
58.7
52.5
12Washington County, IL
58.6
63.7
13Perry County, IL
58.4
59.8
14Coles County, IL
58.2
57.4
15Macoupin County, IL
58.2
52.5
16Pope County, IL
58.2
67.4
17Williamson County, IL
58.2
49.9
18Franklin County, IL
58.1
55.9
19Jackson County, IL
58.1
36
20Hardin County, IL
57.8
70.7
21Gallatin County, IL
57.5
67.6
22Jasper County, IL
57.5
59.7
23Menard County, IL
57.5
59.2
24Monroe County, IL
57.3
58.5
25Cumberland County, IL
57.1
62
26Moultrie County, IL
57.1
58.4
27St. Clair County, IL
57.1
41.3
28Marion County, IL
56.8
46.7
29Edwards County, IL
56.5
66.7
30Vermilion County, IL
55.9
35.5
31Sangamon County, IL
55.8
33.4
32Wabash County, IL
55.8
55.3
33Effingham County, IL
55.6
49.7
34Clay County, IL
55.5
55.8
35Fayette County, IL
55.4
53.8
36Greene County, IL
55.1
60.3
37Champaign County, IL
55
34.4
38Henderson County, IL
55
61.7
39Iroquois County, IL
55
50.3
40Richland County, IL
55
51.4
41Will County, IL
54.8
50.3
42Macon County, IL
54.5
34.6
43White County, IL
54.5
62.5
44Christian County, IL
54.4
55.3
45Edgar County, IL
54.4
59.8
46Lawrence County, IL
54.3
55.7
47Lake County, IL
54.2
47.2
48Adams County, IL
54.1
54.7
49Calhoun County, IL
54.1
63
50Jersey County, IL
54.1
53.4
51Jo Daviess County, IL
54
60.8
52Montgomery County, IL
54
45.9
53Piatt County, IL
54
54.9
54Schuyler County, IL
54
58.3
55Lee County, IL
53.8
51.7
56Brown County, IL
53.6
69.5
57Cass County, IL
53.6
57.4
58Hamilton County, IL
53.5
68.6
59Logan County, IL
53.5
51.6
60Pike County, IL
53.5
55.6
61DeKalb County, IL
53.3
37
62Randolph County, IL
53.3
58.7
63Shelby County, IL
53.2
60.9
64Knox County, IL
53
56.1
65Peoria County, IL
53
31
66Clark County, IL
52.7
55.5
67Crawford County, IL
52.6
52.5
68Grundy County, IL
52.6
44.8
69Tazewell County, IL
52.6
42.5
70Douglas County, IL
52.5
55.6
71Henry County, IL
52.3
50.3
72Stephenson County, IL
52.3
45.6
73Kankakee County, IL
52.2
48
74Marshall County, IL
52.1
54.9
75Mercer County, IL
52.1
63.1
76Winnebago County, IL
52
42.4
77Ford County, IL
51.8
53.8
78Ogle County, IL
51.8
38.7
79Boone County, IL
51.6
43.7
80Kane County, IL
51.5
47.1
81Rock Island County, IL
51.5
36.7
82Warren County, IL
51.5
52.4
83LaSalle County, IL
51.4
40.6
84Kendall County, IL
51.1
38.6
85Whiteside County, IL
51.1
46.3
86Bureau County, IL
51
45.7
87DuPage County, IL
51
54
88Woodford County, IL
51
58.8
89Livingston County, IL
50.9
51.6
90Fulton County, IL
50.6
53.9
91Morgan County, IL
50.6
43.1
92Stark County, IL
50.6
61.1
93Hancock County, IL
50.4
58.6
94Cook County, IL
50.2
30.3
95McDonough County, IL
50
56.3
96Scott County, IL
49.8
68.1
97McHenry County, IL
49.6
52.3
98Mason County, IL
49.1
52.8
99McLean County, IL
47.8
48.1
100De Witt County, IL
47.4
47.8
101Carroll County, IL
47.2
60.6
102Putnam County, IL
47
59.3

Explore More

Best overall counties in IllinoisFull Weather & Climate data on WeatherByCounty