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Jackson County, IA

: September 2026 so far averaged 68°F in Jackson County, IA, the warmest 1 to 29 September in the county average since 2019, 5th 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
76.4°F
Warmest since 2025
18th warmest of 76
Low
49.6°F
Warmest since 2025
27th warmest of 76

No measurable precipitation in the county average of Jackson County, IA 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 Jackson County, IA since 1951: 76.4°F in 2026; the highest is 91.8°F, in 1953.
2025: 84.1°F1953: 91.8°F2026: 76.4°F 2026 76.4°F 1953 91.8°F since 2025 1951 2026
  • Normal range, 57.1 to 78.9°F
Every year as a table

Every 29 September low of the county average in Jackson County, IA since 1951: 49.6°F in 2026; the lowest is 29.9°F, in 1984.

YearHigh, °FLow, °F
202676.449.6
202584.155.3
202479.655.6
202372.157.8
202261.936.3
202181.853.5
202060.843.3
201963.953
20185337.6
201773.944.7
201663.550.6
201581.858
201482.653.9
201378.845.7
201270.637.6
201167.748.7
201071.245
200959.646.5
200869.554.3
200775.747.3
200659.442.4
200564.838.8
200467.738.6
20035633.5
200277.150.2
20016542
200070.844.8
199956.444.5
199877.852.6
199774.452.9
19966548.3
19958052.7
199467.242.6
199359.438.7
199257.233.6
199165.937.7
199069.148.2
198974.639.3
198868.755.6
198774.652.3
198677.462.3
198571.249
198451.429.9
198382.355.8
198276.953.5
198163.941.2
198067.646
197979.553.1
197867.741.2
197770.149.2
197663.643.6
197564.445.2
197465.744.7
197368.960.8
197264.740.4
19718455.1
197071.538
196970.245.9
196864.746.8
196754.530.3
196664.949
196573.854.7
196465.334.9
196369.643.9
196264.934.5
19615934.4
196064.248.2
19596345.2
195869.742.4
195767.932.6
195673.750.8
195573.153.9
195477.161.7
195391.856
195280.949.5
195156.531.6

The month

August 2026 averaged 71.8°F in Jackson County, IA, the warmest August in the county average since 2024, tied 43rd warmest of 132 (with 2024, 2020, 2005 and 4 other years) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 76.4°F averaged over Jackson County, IA, the warmest 29 September in the county average since 2025, 18th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 49.6°F averaged over Jackson County, IA, the warmest 29 September night in the county average since 2025, 27th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Dubuque, IA 17.6 mi, the nearest city with its own station