New London (CT)
September
Weather in New London, Connecticut for September 2026
Your guide to New London weather in September - trends and predictions
In general, the average temperature in New London at the beginning of September is 21.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.4 °C by the end of September.
New London experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 162.4 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
21°/16°
Temperatures
17 km/h
Avg max wind
81 %
Avg humidity
New London Weather September
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Temperatures trend during September in New London
See the weather trend as well as the moving average line
September weather in New London day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Mist | 22° /15° | 0 mm | 6 | |
| Sept. 2 |  Cloudy | 24° /16° | 0 mm | 8 | |
| Sept. 3 | Fog | 19° /12° | 0 mm | 2 | |
| Sept. 4 | Mist | 18° /14° | 0 mm | 1 | |
| Sept. 5 |  Moderate rain | 24° /18° | 16.8 mm | 3 | |
| Sept. 6 |  Overcast | 22° /20° | 0 mm | 2 | |
| Sept. 7 |  Moderate or heavy rain shower | 19° /15° | 13.8 mm | 2 | |
| Sept. 8 |  Sunny | 23° /13° | 0 mm | 7 | |
| Sept. 9 | Cloudy | 21° /13° | 0 mm | 7 | |
| Sept. 10 | Overcast | 20° /15° | 0 mm | 2 | |
| Sept. 11 | Sunny | 25° /14° | 0 mm | 7 | |
| Sept. 12 | Cloudy | 20° /17° | 0 mm | 6 | |
| Sept. 13 |  Partly cloudy | 21° /15° | 0 mm | 7 | |
| Sept. 14 | Mist | 22° /17° | 0 mm | 2 | |
| Sept. 15 | Fog | 19° /15° | 0 mm | 2 | |
| Sept. 16 | Fog | 19° /14° | 0 mm | 3 | |
| Sept. 17 | Fog | 18° /13° | 0 mm | 2 | |
| Sept. 18 |  Heavy rain | 21° /15° | 86.8 mm | 3 | |
| Sept. 19 | Overcast | 25° /16° | 0 mm | 6 | |
| Sept. 20 | Partly cloudy | 21° /12° | 0 mm | 5 | |
| Sept. 21 | Overcast | 17° /13° | 0 mm | 5 | |
| Sept. 22 | Moderate or heavy rain shower | 19° /15° | 16.4 mm | 3 | |
| Sept. 23 | Overcast | 23° /18° | 0 mm | 3 | |
| Sept. 24 | Fog | 21° /18° | 0 mm | 1 | |
| Sept. 25 | Moderate rain at times | 21° /18° | 4.3 mm | 1 | |
| Sept. 26 | Mist | 24° /20° | 0 mm | 4 | |
| Sept. 27 | Partly cloudy | 23° /17° | 0 mm | 5 | |
| Sept. 28 | Moderate rain | 22° /16° | 24.3 mm | 2 | |
| Sept. 29 | Overcast | 24° /17° | 0 mm | 4 | |
| Sept. 30 | Overcast | 22° /16° | 0 mm | 1 | |
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Important Notice
Our weather forecast for New London 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 New London forecast closer to your planned date for the most up-to-date weather information.
Change Month
New London in September - FAQ
What are the expected maximum and minimum temperatures in New London during September?
During September, expect a variety of temperatures with highs around 21° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in New London during September?
Significant rainfall exceeding 162.4 mm is expected in New London during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in New London during September?
The average wind speed in New London during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in New London
Explore the daily rainfall trends and prepare for New Londons September weather 💧
Typically, New London has 6 rainy days in September with a total of 162.4 mm of rainfall.
UV exposure in New London during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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