Fairfield County (Bridgeport)
September
Weather in Fairfield County, Connecticut for September 2026
Your guide to Fairfield County weather in September - trends and predictions
So far, September 2026 in Fairfield County is slightly warmer than the historical average by 1.1 °F.
The forecast for the next days in Fairfield County predicts temperatures to be around 21 °F, close to the historical average.
In general, the average temperature in Fairfield County at the beginning of September is 25 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.7 °F by the end of September.
Fairfield County in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 189 mm.
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Temperatures
Rain 🌧️
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13
Dry days
17
Rainy days
0
Snow days
22°/16°
Temperatures
17 km/h
Avg max wind
76 %
Avg humidity
Fairfield County Weather September
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Temperatures trend during September in Fairfield County
See the weather trend as well as the moving average line
September weather in Fairfield County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 24° /17° | 9.6 mm | 5 | |
| Sept. 2 |  Partly cloudy | 24° /16° | 0 mm | 5 | |
| Sept. 3 | Sunny | 26° /16° | 1 mm | 5 | |
| Sept. 4 | Sunny | 25° /17° | 1.7 mm | 6 | |
| Sept. 5 | Sunny | 27° /17° | 21 mm | 7 | |
| Sept. 6 | Partly cloudy | 25° /18° | 9.4 mm | 6 | |
| Sept. 7 | Sunny | 24° /15° | 10.1 mm | 6 | |
| Sept. 8 | Sunny | 26° /14° | 1.2 mm | 6 | |
| Sept. 9 |  Patchy light rain with thunder | 25° /16° | 1.9 mm | 5 | |
| Sept. 10 |  Light rain shower | 26° /18° | 2.5 mm | 5 | |
| Sept. 11 | Patchy rain possible | 25° /16° | 1.4 mm | 7 | |
| Sept. 12 | Partly cloudy | 23° /16° | 0.5 mm | 6 | |
| Sept. 13 |  Moderate or heavy rain shower | 23° /17° | 51.1 mm | 5 | |
| Sept. 14 |  Cloudy | 23° /16° | 0 mm | 6 | |
| Sept. 15 |  Overcast | 21° /14° | 0 mm | 6 | |
| Sept. 16 | Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 17 | Cloudy | 21° /15° | 0.4 mm | 5 | |
| Sept. 18 | Sunny | 27° /18° | 0.7 mm | 6.7 | |
| Sept. 19 | Overcast | 18° /10° | 0 mm | 5.9 | |
| Sept. 20 | Light rain shower | 21° /13° | 11.8 mm | 0.4 | |
| Sept. 21 | Overcast | 20° /9° | 0 mm | 4.3 | |
| Sept. 22 | Light rain shower | 15° /11° | 6.8 mm | 3 | |
| Sept. 23 | Light rain shower | 14° /11° | 7.2 mm | 3 | |
| Sept. 24 | Light rain shower | 22° /14° | 24.8 mm | 5 | |
| Sept. 25 | Sunny | 19° /10° | 19 mm | 5 | |
| Sept. 26 | Sunny | 17° /7° | 0 mm | 5 | |
| Sept. 27 | Sunny | 21° /8° | 0 mm | 6 | |
| Sept. 28 | Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 29 | Sunny | 26° /15° | 0 mm | 7 | |
| Sept. 30 | Sunny | 23° /15° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Fairfield County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Fairfield County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fairfield County in September - FAQ
What are the expected maximum and minimum temperatures in Fairfield County during September?
During September, expect a variety of temperatures with highs around 22° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Fairfield County during September?
Significant rainfall exceeding 189 mm is expected in Fairfield County during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fairfield County during September?
The average wind speed in Fairfield County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Fairfield County
Explore the daily rainfall trends and prepare for Fairfield Countys September weather 💧
Typically, Fairfield County has 17 rainy days in September with a total of 189 mm of rainfall.
UV exposure in Fairfield County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Fairfield County?Get accurate weather forecasts for Fairfield County, located at latitude 41.179 and longitude -73.189. Stay updated with localized weather information tailored for Fairfield County.
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