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Mills County, IA

: September 2026 so far averaged 71.6°F in Mills County, IA, the warmest 1 to 29 September in the county average since the data begin in 1951 (county average from NOAA gridded data, 1951 to 2026).

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

High
75°F
Warmest since 2025
35th warmest of 76
Low
60.8°F
Warmest since 1998
5th warmest of 76

No measurable precipitation in the county average of Mills County, IA for 3 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September low of the county average in Mills County, IA since 1951: 60.8°F in 2026; the lowest is 26.4°F, in 1984.
1998: 61.6°F1984: 26.4°F2026: 60.8°F 2026 60.8°F 1984 26.4°F since 1998 1951 2026
  • Normal range, 37.1 to 54.5°F
Every year as a table

Every 29 September high of the county average in Mills County, IA since 1951: 75°F in 2026; the highest is 92.1°F, in 2021.

YearHigh, °FLow, °F
20267560.8
202587.251.7
202485.952.8
202384.953.2
202268.540
202192.157.2
202062.842.2
201968.150.6
20185044.2
201777.147.6
201665.345.2
201584.954.4
201481.855.6
201367.843.8
20127541.5
201183.348.8
201075.350
200966.739.4
200880.853.3
200779.546.7
200660.540.9
200563.333.8
200472.838.3
200360.131.1
200278.253.8
200176.144.9
200081.746.3
19996638.8
199884.461.6
199776.148.7
199670.542.6
199583.755.5
199475.844.2
199367.337.3
199259.235.4
199174.841.8
199073.651.5
198979.144.6
198867.658.7
198774.250.8
198683.959.2
198550.138.3
198453.426.4
198381.664.1
198278.762.1
198175.447.5
198076.751.4
197977.946.3
197872.449.1
197773.152.2
19766037.5
197567.941.7
19746434
197368.651.1
197266.836.8
197184.857.9
197080.743.7
196974.855.3
196877.154
19676232.3
196665.648
196577.954.9
196470.437.6
196372.443.7
196266.745.6
196165.542.7
196069.450.5
19595739.2
195873.747.7
195775.241.6
195678.244.5
195573.658
195475.456.4
195390.866.7
195282.852.2
195163.443.4

The month

August 2026 averaged 74.7°F in Mills County, IA, the warmest August in the county average since 2022, tied 43rd warmest of 132 (with 2022, 1993, 1970 and 1 other year) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 75°F averaged over Mills County, IA, the warmest 29 September in the county average since 2025, tied 35th warmest of 76 (with 2012) (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 60.8°F averaged over Mills County, IA, the warmest 29 September night in the county average since 1998, 5th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Omaha, NE 24.2 mi, the nearest city with its own station