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Clermont County, OH

: September 2026 so far averaged 72.3°F in Clermont County, OH, the warmest 1 to 29 September in the county average since 2019, 2nd 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
77.1°F
Warmest since 2025
27th warmest of 76
Low
46.8°F
Coldest since 2022
30th coldest of 76

No measurable precipitation in the county average of Clermont County, OH for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September low of the county average in Clermont County, OH since 1951: 46.8°F in 2026; the lowest is 34.3°F, in 1951.
2022: 39.9°F1951: 34.3°F2026: 46.8°F 2026 46.8°F 1951 34.3°F since 2022 1951 2026
  • Normal range, 41.2 to 54.8°F
Every year as a table

Every 29 September high of the county average in Clermont County, OH since 1951: 77.1°F in 2026; the highest is 93.3°F, in 1953.

YearHigh, °FLow, °F
202677.146.8
202587.856.2
202467.264
20237459
202262.139.9
202183.656.5
20207448.7
201991.664.9
201870.648.3
201776.545.9
201665.749.3
201581.559.7
201483.853.3
201380.250.3
201266.753.8
201165.949.3
201066.146.8
200964.950.5
200879.951.7
200777.947.4
200661.943.1
200579.450
200476.751.8
200360.342.6
200274.752.2
200163.641.2
200066.841.1
199983.559.3
199882.654.3
199779.750.4
199667.644.3
199580.647.2
199470.144.2
199364.938.8
199272.339.1
199172.745.6
199081.559.7
198971.540.2
198881.252.5
198781.454.4
198688.367.4
198572.242.1
198461.140.1
198379.949.4
198272.848.8
198168.240
198074.547.2
197968.357
197872.142.3
197771.745.4
197665.944.7
197569.641.9
197472.154.7
19738567.3
197271.960.7
197186.564.8
197065.137.1
19697140.7
196875.548.5
196748.540.7
196670.650.8
196577.447.9
196457.848.4
196370.447.1
196264.435.5
196171.137
196076.353.2
195986.563.8
195868.542
195767.642.8
195675.544.8
195581.551.3
19548761.6
195393.345.7
195285.250.1
195162.134.3

The month

August 2026 averaged 74.4°F in Clermont County, OH, the warmest August in the county average since 2024, tied 36th warmest of 132 (with 1928) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 77.1°F averaged over Clermont County, OH, the warmest 29 September in the county average since 2025, 27th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 46.8°F averaged over Clermont County, OH, the coldest 29 September night in the county average since 2022, tied 30th coldest of 76 (with 2010) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Cincinnati, OH 28.1 mi, the nearest city with its own station