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Fairfield County, CT

Tuesday : a high of 60.9°F averaged over Fairfield County, CT, the coldest 29 September day in the county average since 2000, 7th coldest 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
60.9°F
Coldest since 2000
7th coldest of 76
Low
54.5°F
Warmest since 2025
20th warmest of 76
Precipitation
0.46 in
Wettest since 2023
11th wettest of 76
Every 29 September high of the county average in Fairfield County, CT since 1951: 60.9°F in 2026; the highest is 82.8°F, in 2025.
2000: 60.6°F2025: 82.8°F2026: 60.9°F 2026 60.9°F since 2000 1951 2026
  • Normal range, 62.9 to 77.1°F
Every year as a table

Every 29 September low of the county average in Fairfield County, CT since 1951: 54.5°F in 2026; the lowest is 34.1°F, in 1957.

YearHigh, °FLow, °F
202660.954.5
202582.859.9
202470.357.9
202365.951.5
202268.448.8
202168.548.8
202076.963.4
201980.257.2
20186350.1
201776.347
201665.453.8
201578.659
201482.755.3
201370.748
201262.354.3
201171.763
201073.761.4
200970.648.7
200872.759.6
200774.452.4
200670.551.9
200573.248.5
200465.656
200368.350.2
200271.347.2
200163.847
200060.635.5
199975.160.8
199872.745
199767.552.5
199671.955.1
199569.540.8
199468.549.3
199364.245.4
199266.351.9
199160.236.2
199075.251.1
198963.937.3
19887542.6
198776.756.2
198665.756.1
198568.747.5
198452.442.2
198369.342.7
198271.753.1
198165.540.9
198069.343.4
197972.453.1
197866.936.9
197771.150.5
197662.836
197566.245
197470.157
197370.951.3
197266.751.7
19716858.5
197060.543.2
196965.944.6
196869.946.5
196771.261.7
196662.751.1
196561.239.2
196458.849
196369.250.3
196259.651.9
196171.242.9
196068.357.2
195979.466.6
195864.137.8
19576234.1
195661.147.9
195572.949.2
195478.149.7
195374.748.8
195275.445.3
195161.740.1

The month

September 2026 so far averaged 64.6°F in Fairfield County, CT, the warmest 1 to 29 September in the county average since 2025, tied 30th warmest of 76 (with 2003) (county average from NOAA gridded data, 1951 to 2026).

The month in words
  • August 2026 averaged 73°F in Fairfield County, CT, the warmest August in the county average since 2022, 16th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
  • Tuesday 29 September 2026: a low of 54.5°F averaged over Fairfield County, CT, the warmest 29 September night in the county average since 2025, 20th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: 0.46 in of precipitation averaged over Fairfield County, CT, the wettest 29 September in the county average since 2023, 11th wettest of 76 (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Bridgeport, CT 13.2 mi, the nearest city with its own station

County data for Connecticut use its eight historical counties, as NOAA's county data still do; the Census Bureau replaced them with nine planning regions in 2022.