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United States weather

Weather in New Haven, Connecticut for September 2027

Your guide to New Haven weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in New Haven at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20.1 °C by the end of September.

    • Rain 🌧️

  • New Haven experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 146 mm.

    • More

  • Is September a good time to visit New Haven? check out the best time to travel to New Haven page.

  • ✨ Is September a good time to visit New Haven? – Ask the AI Weatherman

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/16°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
75 %
Avg humidity

New Haven Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain
24°
2
Partly cloudy
24°
3
Light rain
22°
4
Sunny
23°
5
Moderate rain
25°
6
Light rain
23°
7
Heavy rain at times
21°
8
Sunny
22°
9
Partly cloudy
24°
10
Sunny
24°
11
Partly cloudy
24°
12
Partly cloudy
22°
13
Heavy rain
23°
14
Patchy rain possible
24°
15
Partly cloudy
21°
16
Cloudy
22°
17
Overcast
22°
18
Moderate rain
24°
19
Overcast
23°
20
Light rain
21°
21
Overcast
20°
22
Overcast
20°
23
Cloudy
21°
24
Cloudy
21°
25
Light rain
19°
26
Heavy rain at times
21°
27
Light rain
20°
28
Moderate rain
20°
29
Overcast
20°
30
Overcast
20°

Temperatures trend during September in New Haven

See the weather trend as well as the moving average line

September weather in New Haven day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Light rain
Light rain
 24° /19° 3.4 mm 4
Sept. 2 Partly cloudy
Partly cloudy
 24° /17° 0.2 mm 4
Sept. 3 Light rain
Light rain
 22° /15° 3.3 mm 4
Sept. 4 Sunny
Sunny
 23° /17° 0.5 mm 4
Sept. 5 Moderate rain
Moderate rain
 25° /17° 12.1 mm 7
Sept. 6 Light rain
Light rain
 23° /17° 4.2 mm 5
Sept. 7 Heavy rain at times
Heavy rain at times
 21° /14° 8.7 mm 5
Sept. 8 Sunny
Sunny
 22° /12° 0 mm 6
Sept. 9 Partly cloudy
Partly cloudy
 24° /14° 0.2 mm 5
Sept. 10 Sunny
Sunny
 24° /17° 0.2 mm 5
Sept. 11 Partly cloudy
Partly cloudy
 24° /16° 0 mm 7
Sept. 12 Partly cloudy
Partly cloudy
 22° /15° 0 mm 6
Sept. 13 Heavy rain
Heavy rain
 23° /17° 35 mm 4
Sept. 14 Patchy rain possible
Patchy rain possible
 24° /17° 0 mm 6
Sept. 15 Partly cloudy
Partly cloudy
 21° /15° 0 mm 6
Sept. 16 Cloudy
Cloudy
 22° /15° 0 mm 5
Sept. 17 Overcast
Overcast
 22° /16° 0.4 mm 5
Sept. 18 Moderate rain
Moderate rain
 24° /17° 14.9 mm 5
Sept. 19 Overcast
Overcast
 23° /17° 0 mm 5
Sept. 20 Light rain
Light rain
 21° /15° 6 mm 4
Sept. 21 Overcast
Overcast
 20° /15° 0.9 mm 4
Sept. 22 Overcast
Overcast
 20° /14° 0.1 mm 4
Sept. 23 Cloudy
Cloudy
 21° /14° 0 mm 4
Sept. 24 Cloudy
Cloudy
 21° /13° 0 mm 5
Sept. 25 Light rain
Light rain
 19° /15° 9.7 mm 3
Sept. 26 Heavy rain at times
Heavy rain at times
 21° /16° 16.4 mm 4
Sept. 27 Light rain
Light rain
 20° /16° 7.7 mm 4
Sept. 28 Moderate rain
Moderate rain
 20° /15° 21.1 mm 4
Sept. 29 Overcast
Overcast
 20° /15° 0.8 mm 4
Sept. 30 Overcast
Overcast
 20° /15° 0 mm 4
Next
Important Notice
Our weather forecast for New Haven 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 Haven forecast closer to your planned date for the most up-to-date weather information.
Change Month
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New Haven in September - FAQ

What are the expected maximum and minimum temperatures in New Haven 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 New Haven during September?
Significant rainfall exceeding 146 mm is expected in New Haven during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in New Haven during September?
The average wind speed in New Haven during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in New Haven

Explore the daily rainfall trends and prepare for New Havens September weather 💧
Typically, New Haven has 8 rainy days in September with a total of 146 mm of rainfall.

UV exposure in New Haven during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for New Haven, located at latitude 41.308 and longitude -72.928. Stay updated with localized weather information tailored for New Haven.

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