Hartford (CT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hartford.
Climate overview of Hartford
Hartford, Connecticut, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to 3°C (37°F).
With around 1257 mm (49 in) of annual rain/snowfall, Hartford has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and cold winters. The wettest month is June. The sunniest month is July, with 9.8 hours of sunshine per day on average.
Hartford Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hartford - and find the best time to visit.
Monthly Temperature in Hartford
Visitors to Hartford can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 29°C (84°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 19°C (66°F) in July to -7°C (19°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hartford
Hartford is known for its substantial rain/snowfall, with annual precipitation reaching 1257 mm (49 in). Hartford experiences moderate seasonal variation in rainfall, with monthly averages ranging from 145 mm (5.7 in) in June, the wettest month, and 82 mm (3.2 in) in January, the driest month. For more details, please visit our Hartford Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Hartford
Hartford can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in November, with only 4.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Hartford by Month
The relative humidity is high throughout the year in Hartford.
The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Hartford
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: February, March, September and November
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -7°C (19°F).
Frequently asked questions about the climate in Hartford
What is the best time to visit Hartford?
May and September typically offer the most optimal weather in Hartford. In contrast, January, February, March and December tend to have less optimal conditions. Hartford has warm summers and cold winters.
What temperatures can I expect in Hartford?
Daytime highs range from 3°C (37°F) in January to 29°C (84°F) in July. Nighttime lows range from -7°C (19°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Hartford get?
Annual rainfall is around 1257 mm (49 in). June is the wettest month with 145 mm (5.7 in), while January is the driest with 82 mm (3.2 in).
How sunny is Hartford?
Hartford receives around 2,579 hours of sunshine per year. July is the sunniest month with 293 hours, while November is the cloudiest with just 139 hours. Overall, Hartford enjoys abundant sunshine.
Hartford 3-Day Forecast
Hartford (CT) 3-Day Forecast
Hartford on the map
Hartford is highlighted - select any city to see its climate.
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