Hartford (CT)
September
Weather in Hartford, Connecticut for September 2027
Your guide to Hartford weather in September - trends and predictions
In general, the average temperature in Hartford at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.
Hartford experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 181.8 mm.
Is September a good time to visit Hartford? check out the best time to travel to Hartford page.
✨ Is September a good time to visit Hartford? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
23°/14°
Temperatures
13 km/h
Avg max wind
74 %
Avg humidity
Hartford Weather September
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Temperatures trend during September in Hartford
See the weather trend as well as the moving average line
September weather in Hartford day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Heavy rain | 25° /17° | 25.5 mm | 4 | |
| Sept. 2 |  Cloudy | 24° /15° | 0.2 mm | 4 | |
| Sept. 3 |  Light rain | 26° /13° | 6.4 mm | 4 | |
| Sept. 4 |  Sunny | 25° /14° | 0 mm | 6 | |
| Sept. 5 |  Patchy rain possible | 26° /15° | 1.8 mm | 7 | |
| Sept. 6 |  Moderate rain | 25° /15° | 17 mm | 5 | |
| Sept. 7 | Moderate rain | 22° /11° | 16.7 mm | 5 | |
| Sept. 8 | Sunny | 24° /11° | 0 mm | 6 | |
| Sept. 9 |  Partly cloudy | 23° /12° | 0.3 mm | 4 | |
| Sept. 10 |  Overcast | 24° /14° | 0.4 mm | 4 | |
| Sept. 11 | Partly cloudy | 25° /12° | 0 mm | 7 | |
| Sept. 12 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 13 | Moderate rain | 24° /14° | 21.1 mm | 4 | |
| Sept. 14 | Partly cloudy | 26° /15° | 0.1 mm | 6 | |
| Sept. 15 | Cloudy | 24° /13° | 0 mm | 6 | |
| Sept. 16 | Overcast | 25° /13° | 0 mm | 6 | |
| Sept. 17 | Patchy rain possible | 24° /14° | 1 mm | 4 | |
| Sept. 18 | Patchy rain possible | 25° /16° | 1.5 mm | 5 | |
| Sept. 19 | Light rain | 22° /14° | 3 mm | 4 | |
| Sept. 20 | Light rain | 19° /14° | 3.1 mm | 4 | |
| Sept. 21 | Overcast | 19° /12° | 0.2 mm | 3 | |
| Sept. 22 | Overcast | 21° /12° | 0 mm | 3 | |
| Sept. 23 | Overcast | 21° /13° | 0 mm | 4 | |
| Sept. 24 | Overcast | 20° /12° | 0 mm | 5 | |
| Sept. 25 | Moderate rain | 19° /13° | 11 mm | 3 | |
| Sept. 26 | Heavy rain | 21° /15° | 41.3 mm | 4 | |
| Sept. 27 | Moderate rain | 20° /14° | 13.5 mm | 4 | |
| Sept. 28 | Moderate rain | 20° /15° | 17.7 mm | 4 | |
| Sept. 29 | Overcast | 21° /14° | 0 mm | 4 | |
| Sept. 30 | Overcast | 21° /13° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Hartford 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 Hartford forecast closer to your planned date for the most up-to-date weather information.
Change Month
Hartford in September - FAQ
What are the expected maximum and minimum temperatures in Hartford during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Hartford during September?
Significant rainfall exceeding 181.8 mm is expected in Hartford during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hartford during September?
The average wind speed in Hartford during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hartford
Explore the daily rainfall trends and prepare for Hartfords September weather 💧
Typically, Hartford has 8 rainy days in September with a total of 181.8 mm of rainfall.
UV exposure in Hartford during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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