County Mapping

County Data Info
Please note, Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales. Data are available for bulk download.
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County Average Temperature
March - May 1921
0ยฐF10ยฐF20ยฐF30ยฐF40ยฐF50ยฐF60ยฐF70ยฐF80ยฐF90ยฐF
Illinois (Hover over a County)
TempAverage Temperature: 55.6ยฐF
Anomaly: 4.5ยฐF
Rank: 5th Warmest
Mean: 51.1ยฐF
March - May 1921 Illinois County Average Temperature
County
Value
Anomaly
Rank
130 Years
1901-2000 Mean
Adams County56.2ยฐF4.2ยฐF12452.0ยฐF
Alexander County59.9ยฐF3.4ยฐF12356.5ยฐF
Bond County57.3ยฐF3.9ยฐF12253.5ยฐF
Boone County52.0ยฐF5.4ยฐF12846.6ยฐF
Brown County56.2ยฐF4.4ยฐF12651.8ยฐF
Bureau County53.2ยฐF4.6ยฐF12348.6ยฐF
Calhoun County57.3ยฐF3.9ยฐF12553.4ยฐF
Carroll County52.2ยฐF5.1ยฐF12747.1ยฐF
Cass County56.6ยฐF4.6ยฐF12752.0ยฐF
Champaign County54.8ยฐF4.5ยฐF12250.3ยฐF
Christian County56.1ยฐF4.1ยฐF12352.0ยฐF
Clark County56.8ยฐF4.6ยฐF12652.1ยฐF
Clay County57.6ยฐF4.2ยฐF12553.4ยฐF
Clinton County57.9ยฐF3.8ยฐF12354.2ยฐF
Coles County56.2ยฐF4.6ยฐF12551.7ยฐF
Cook County53.0ยฐF5.6ยฐF12747.4ยฐF
Crawford County57.6ยฐF4.6ยฐF12553.0ยฐF
Cumberland County56.8ยฐF4.5ยฐF12552.3ยฐF
DeKalb County52.3ยฐF5.2ยฐF12747.2ยฐF
De Witt County55.0ยฐF4.7ยฐF12550.4ยฐF
Douglas County55.8ยฐF4.7ยฐF12451.1ยฐF
DuPage County53.1ยฐF5.7ยฐF12847.4ยฐF
Edgar County56.0ยฐF4.7ยฐF12651.3ยฐF
Edwards County58.9ยฐF4.4ยฐF12654.5ยฐF
Effingham County57.0ยฐF4.3ยฐF12352.7ยฐF
Fayette County57.0ยฐF4.0ยฐF12353.0ยฐF
Ford County54.2ยฐF4.7ยฐF12549.5ยฐF
Franklin County58.5ยฐF3.7ยฐF12354.8ยฐF
Fulton County55.9ยฐF4.9ยฐF12851.1ยฐF
Gallatin County59.8ยฐF4.0ยฐF12655.8ยฐF
Greene County56.9ยฐF3.7ยฐF12453.2ยฐF
Grundy County53.8ยฐF5.1ยฐF12548.7ยฐF
Hamilton County59.0ยฐF4.1ยฐF12654.9ยฐF
Hancock County55.5ยฐF4.2ยฐF12651.3ยฐF
Hardin County59.9ยฐF4.0ยฐF12655.9ยฐF
Henderson County54.7ยฐF4.4ยฐF12550.3ยฐF
Henry County53.3ยฐF4.5ยฐF12348.8ยฐF
Iroquois County54.2ยฐF4.9ยฐF12549.3ยฐF
Jackson County58.4ยฐF3.3ยฐF12155.1ยฐF
Jasper County57.4ยฐF4.4ยฐF12653.0ยฐF
Jefferson County58.3ยฐF3.9ยฐF12554.4ยฐF
Jersey County57.5ยฐF3.9ยฐF12453.6ยฐF
Jo Daviess County51.5ยฐF5.0ยฐF12746.5ยฐF
Johnson County59.5ยฐF3.8ยฐF12555.6ยฐF
Kane County52.7ยฐF5.6ยฐF12847.1ยฐF
Kankakee County53.8ยฐF5.0ยฐF12648.7ยฐF
Kendall County53.5ยฐF5.3ยฐF12748.2ยฐF
Knox County54.1ยฐF4.6ยฐF12349.5ยฐF
Lake County51.7ยฐF5.7ยฐF12846.0ยฐF
LaSalle County53.7ยฐF5.1ยฐF12548.6ยฐF
Lawrence County58.3ยฐF4.4ยฐF12553.9ยฐF
Lee County52.6ยฐF4.9ยฐF12547.7ยฐF
Livingston County54.1ยฐF5.0ยฐF12449.1ยฐF
Logan County56.1ยฐF4.9ยฐF12651.2ยฐF
McDonough County55.1ยฐF4.3ยฐF12650.8ยฐF
McHenry County51.6ยฐF5.5ยฐF12846.1ยฐF
McLean County54.1ยฐF4.6ยฐF12249.6ยฐF
Macon County55.8ยฐF4.6ยฐF12451.2ยฐF
Macoupin County56.6ยฐF3.8ยฐF12252.8ยฐF
Madison County58.1ยฐF3.9ยฐF12454.1ยฐF
Marion County57.6ยฐF4.0ยฐF12653.7ยฐF
Marshall County54.1ยฐF4.7ยฐF12349.4ยฐF
Mason County56.7ยฐF5.0ยฐF12851.7ยฐF
Massac County60.3ยฐF3.8ยฐF12656.4ยฐF
Menard County56.4ยฐF4.7ยฐF12751.7ยฐF
Mercer County54.1ยฐF4.6ยฐF12449.5ยฐF
Monroe County58.5ยฐF3.5ยฐF12055.0ยฐF
Montgomery County56.4ยฐF3.8ยฐF12152.6ยฐF
Morgan County56.2ยฐF4.2ยฐF12652.1ยฐF
Moultrie County56.1ยฐF4.6ยฐF12551.5ยฐF
Ogle County52.3ยฐF5.1ยฐF12747.2ยฐF
Peoria County54.8ยฐF4.8ยฐF12450.0ยฐF
Perry County57.9ยฐF3.3ยฐF12054.6ยฐF
Piatt County55.2ยฐF4.6ยฐF12450.6ยฐF
Pike County56.4ยฐF3.9ยฐF12552.5ยฐF
Pope County59.8ยฐF4.0ยฐF12655.8ยฐF
Pulaski County59.9ยฐF3.5ยฐF12356.5ยฐF
Putnam County54.3ยฐF4.9ยฐF12649.4ยฐF
Randolph County58.2ยฐF3.3ยฐF11954.8ยฐF
Richland County58.2ยฐF4.4ยฐF12653.8ยฐF
Rock Island County53.7ยฐF4.7ยฐF12449.0ยฐF
St. Clair County58.5ยฐF3.8ยฐF12254.7ยฐF
Saline County59.4ยฐF3.9ยฐF12655.4ยฐF
Sangamon County56.2ยฐF4.3ยฐF12451.9ยฐF
Schuyler County56.1ยฐF4.5ยฐF12751.6ยฐF
Scott County56.6ยฐF4.0ยฐF12552.5ยฐF
Shelby County56.4ยฐF4.3ยฐF12452.1ยฐF
Stark County53.6ยฐF4.5ยฐF12349.1ยฐF
Stephenson County51.5ยฐF5.2ยฐF12746.4ยฐF
Tazewell County55.4ยฐF4.9ยฐF12650.5ยฐF
Union County59.0ยฐF3.4ยฐF12355.6ยฐF
Vermilion County55.3ยฐF4.8ยฐF12650.4ยฐF
Wabash County58.8ยฐF4.3ยฐF12654.5ยฐF
Warren County54.2ยฐF4.5ยฐF12449.7ยฐF
Washington County57.9ยฐF3.5ยฐF12454.3ยฐF
Wayne County58.6ยฐF4.4ยฐF12654.2ยฐF
White County59.5ยฐF4.2ยฐF12655.2ยฐF
Whiteside County52.8ยฐF4.7ยฐF12448.1ยฐF
Will County53.5ยฐF5.1ยฐF12648.4ยฐF
Williamson County58.8ยฐF3.7ยฐF12455.1ยฐF
Winnebago County52.2ยฐF5.4ยฐF12846.9ยฐF
Woodford County54.0ยฐF4.6ยฐF12249.4ยฐF

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