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Kendall County, IL

: September 2026 so far averaged 69.4°F in Kendall County, IL, the warmest 1 to 29 September in the county average since 2016, 4th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
75.4°F
Warmest since 2025
23rd warmest of 76
Low
48.1°F
Warmest since 2025
35th warmest of 76

No measurable precipitation in the county average of Kendall County, IL for 6 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Kendall County, IL since 1951: 75.4°F in 2026; the highest is 93.7°F, in 1953.
2025: 84.9°F1953: 93.7°F2026: 75.4°F 2026 75.4°F 1953 93.7°F since 2025 1951 2026
  • Normal range, 60.2 to 79.5°F
Every year as a table

Every 29 September low of the county average in Kendall County, IL since 1951: 48.1°F in 2026; the lowest is 32.8°F, in 1951.

YearHigh, °FLow, °F
202675.448.1
202584.957.2
202473.362.7
202371.854.1
20226237.6
202178.853.6
202063.543
201965.457.8
201863.737.8
201772.947.8
201662.650
20157860.4
201481.253.4
201383.850.2
201269.743.7
201166.349
20107246.9
200963.647.3
200873.853.7
200776.248.3
200659.539.1
200573.941.8
200467.745.2
200356.637.5
200278.650.9
20015746.2
200067.543.9
19996450.1
199879.353
199771.451.7
199663.847.2
199581.250.8
199465.442.9
199360.338.4
199261.535.6
19916741.6
199068.951.5
198973.543
198876.557.1
198778.756
198683.865.9
198575.647.8
198457.334.3
198380.452.9
198276.951.8
198164.942.5
19806747.6
19798353.3
197867.942.6
197771.846.8
197665.744.2
197571.948
197467.346.7
197373.561.9
19727547.9
197184.564.3
197066.137.9
196970.443.8
196869.948.1
196751.437.5
196664.951
19657653.2
196463.835.7
196368.545.4
196265.937.4
196161.935
196068.647.5
195969.753.5
195868.142.1
19576835.6
19568053.3
195571.450
195477.361.9
195393.755.2
195281.652.5
195159.732.8

The month

August 2026 averaged 72.5°F in Kendall County, IL, the warmest August in the county average since 2024, tied 42nd warmest of 132 (with 2024, 2014 and 1993) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 75.4°F averaged over Kendall County, IL, the warmest 29 September in the county average since 2025, 23rd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 48.1°F averaged over Kendall County, IL, the warmest 29 September night in the county average since 2025, tied 35th warmest of 76 (with 1968) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Chicago, IL 36.4 mi, the nearest city with its own station