Things to Do in Hartford in September
September weather, activities, events & insider tips
Low Season · Budget Friendly
September Weather in Hartford
Long-run averages for September
75°F (24°C)
High Temp
58°F (14°C)
Low Temp
5.1 inches (130 mm)
Rainfall
76%
Humidity
6
Sunny-Day UV
What's On in Hartford in September
September in Hartford brings Labor Day on Monday 6 September 2027. The month has an average high of 24°C and an average low of 14°C, with average rainfall of 130 mm. September is 4°C cooler than August and wetter than August (130 mm vs 99 mm). Day length is 13 h 05 min on 1 September and 12 h 25 min on 15 September.
September Climate Compared
| Month | Avg high | Avg low | Rainfall |
|---|---|---|---|
| August | 28°C | 18°C | 99 mm |
| September | 24°C | 14°C | 130 mm |
| October | 18°C | 9°C | 117 mm |
September is 4°C cooler than August; wetter than August (130 mm vs 99 mm); 6°C warmer than October; wetter than October (130 mm vs 117 mm).
Long-run monthly averages. Source: Open-Meteo.
Daylight in September
Day length: 13 h 05 min on 1 September, 12 h 25 min on 15 September (−86 min compared with mid-August).
Computed from the city's coordinates (sunrise to sunset, standard solar geometry).
Public Holidays and Long Weekends
- Labor Day: Monday 6 September 2027 (3-day weekend (Sat–Mon))
Holiday dates: Nager.Date. Long-weekend notes are computed from the weekday.
Notable Places to Visit
Islamic Center of Connecticut
Mosque in Windsor, Connecticut, U.S. with an attached cemetery
OSM · Wikidata · Website
Places within 8 km, ordered by Wikipedia coverage. Opening hours as mapped in OpenStreetMap (fetched 2026-10-16); check before you go. Data © OpenStreetMap contributors (ODbL); descriptions from Wikidata (CC0).
Quick Answers
How much rain does Hartford get in September?
On average 130 mm in September, wetter than October (130 mm vs 117 mm).
How warm is Hartford in September?
Average highs are 24°C and average lows 14°C.
How long are the days in Hartford in September?
About 12 h 25 min of daylight on 15 September.
Are there public holidays in Hartford in September?
Yes: Labor Day on Monday 6 September 2027. 1 of them create a long weekend.
What are some notable places to visit in Hartford?
Wadsworth Atheneum Museum of Art, Mark Twain House, Cathedral of St. Joseph, Hartford Union Station (from OpenStreetMap and Wikidata).
Where to Stay in Hartford in September
Hand-picked hotels across price tiers for September travellers.
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Public Holidays in September
Dates that affect opening hours, transport and crowds
Labor Day
Known in English as Labour Day. Observed nationwide as a public holiday.
Labor Day
Known in English as Labour Day. Observed nationwide as a public holiday.
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Top-rated things to do in Hartford this September
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