Weather in September
is the beginning of the colorful fall season in Connecticut
with moderate temperatures. The average high temperatures are in the pleasant 68°F (20°C) to 76°F (24.4°C) range, while the average low temperatures are in the mild 48°F (8.9°C) to 54°F (12.2°C) zone. New Haven on the coast registers temperatures between 56°F (13.3°C) to 74°F (23.3°C), while Norfolk in the interior is one of the coldest places in the state between 50°F (10°C) to 68°F (20°C).
The skies are partly cloudy, but the daily sunshine is rarely short of 7 hours. Back roads, state parks, and forests, rivers, and lakes are the ideal places for experience the fall foliage, which begins by the third week of September. Autumn is apple season and also the time of pumpkin patches and corn mazes.
Full-sleeved clothing is better during the breezy evenings with a drop in temperatures and the ever-present threat of rain. Wind speeds rarely cross 10mph (16.1km/h), but a jacket is handy in Connecticut in September.