Heat Advisory
* WHAT...Heat index values up to 99 expected.
* WHERE...Portions of northern Connecticut, central, eastern,
northeastern, southeastern and western Massachusetts and
northern and southern Rhode Island.
* WHEN...From 11 AM this morning to 8 PM EDT Friday.
* IMPACTS...Hot tempera…
Heat Advisory
* WHAT...Heat index values up to 98 expected.
* WHERE...In Connecticut, Southern Litchfield County. In New York,
Eastern Ulster and Western Dutchess Counties.
* WHEN...From 11 AM this morning to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
ill…
Tomorrow in Hartford looks
mist, with a high of 94°
and an overnight low of 69°.
There is a 74% chance of rain - plan accordingly.
Winds top out near 7 mph,
and the UV index reaches 8 (very high).
Located in Connecticut, United States, Hartford experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 85°F (29°C) in July and dip to about 38°F (3°C) in January, with around 48.5 inches (1232 mm) of precipitation falling across the year.
Hartford weather: quick facts
Hottest month: July - highs near 85°F (29°C)
Coldest month: January - highs near 38°F (3°C)
Record high: 99°F (37°C) · Record low: -16°F (-26°C) (2015–2024)
Wettest month: September (9 rainy days) · Sunniest: July (11.2 h sun/day)
Climate type:humid subtropical - hot, humid summers and generally mild winters
Snow: about 14 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 85°F (29°C) and overnight lows stay near 66°F (19°C). The coolest month is January, with typical highs of 38°F (3°C) and lows around 22°F (-5°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as -16°F (-26°C).
Rain, sun and snow
September is usually the wettest month. It brings about 5.0 inches (127 mm) of rain over 9 days, while November is the driest. July brings the most sunshine, averaging 11.2 hours of sun a day. Snow falls on about 14 days in a typical year, mostly from November through April.
Season by season
Spring (March through May)
Spring in Hartford is mild, with daytime highs averaging 59°F (15°C) and nights around 39°F (4°C); expect showers on roughly 34 days across the season, plus around 3 snowy days.
Summer (June through August)
Summer in Hartford is hot, with daytime highs averaging 82°F (28°C) and nights around 63°F (17°C); expect showers on roughly 35 days across the season.
Fall (September through November)
Fall in Hartford stays on the cool side of mild, with daytime highs averaging 64°F (18°C) and nights around 47°F (8°C); expect showers on roughly 28 days across the season.
Winter (December through February)
Winter in Hartford runs cold, with daytime highs averaging 40°F (5°C) and nights around 24°F (-4°C); expect showers on roughly 31 days across the season, plus around 10 snowy days.
Average temperatures in Hartford by month
Monthly averages for Hartford based on 2015–2024 weather data.
July is the hottest month in Hartford, with average highs of 85°F (29°C) and overnight lows near 66°F (19°C). In the past decade the temperature has peaked at 99°F (37°C).
What is the coldest month in Hartford?
January is the coldest month, with highs averaging 38°F (3°C) and lows around 22°F (-5°C). The lowest reading in recent years was -16°F (-26°C).
What is the rainiest month in Hartford?
September is typically the wettest month, averaging 5.0 inches (127 mm) of precipitation across about 9 days. November is usually the driest.
Does it snow in Hartford?
Yes. Hartford averages about 14 days of snowfall a year, concentrated November through April.
What is the best time to visit Hartford?
The best time to visit Hartford is generally August to October and May to June, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 75°F (24°C).
How sunny is Hartford?
Hartford averages 8.4 hours of sunshine per day across the year. July is the sunniest month at about 11.2 hours of sun a day.
Is Hartford humid?
Relative humidity in Hartford averages about 71% over the year, which feels fairly humid. Combined with July heat, muggy conditions are common in summer - the dew point is the number to watch.