Hartford, CT Weather by Month and Climate Averages

How much rain does Hartford get?

Hartford gets 42.8 in of precipitation in an average year, spread over about 128 days with measurable rain. That is more rainy days than 84% of the US.

October is the wettest month, with 4.2 in. February is the driest, with 2.6 in. May has the most rainy days, about 13.

The longest dry spell in the last five years lasted 18 days, to September 25, 2024.

See where Hartford ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Connecticut.

Does it snow in Hartford?

The snowiest winter on record is 1970–71, with 57.4 in.

See where Hartford ranks: snowiest cities in the US.

Hartford weather by month

Hartford weather in January

In January, Hartford averages a high of 37°F and a low of 20°F. It gets 2.9 in of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The January record high is 71°F (2007) and the record low is -16°F (1997).

Hartford weather in February

In February, Hartford averages a high of 40°F and a low of 22°F. It gets 2.6 in of precipitation over about 9 rainy days. The sun is out about 43% of daylight hours. The February record high is 74°F (1985) and the record low is -10°F (1979).

Hartford weather in March

In March, Hartford averages a high of 48°F and a low of 29°F. It gets 3.5 in of precipitation over about 10 rainy days. The sun is out about 43% of daylight hours. The March record high is 82°F (2012) and the record low is 1°F (2003).

Hartford weather in April

In April, Hartford averages a high of 61°F and a low of 40°F. It gets 3.8 in of precipitation over about 11 rainy days. The sun is out about 39% of daylight hours. The April record high is 94°F (2002) and the record low is 8°F (1997).

Hartford weather in May

In May, Hartford averages a high of 71°F and a low of 49°F. It gets 3.4 in of precipitation over about 13 rainy days. The sun is out about 42% of daylight hours. The May record high is 99°F (1996) and the record low is 20°F (1997). May is one of the most comfortable months to visit.

Hartford weather in June

In June, Hartford averages a high of 80°F and a low of 59°F. It gets 3.9 in of precipitation over about 11 rainy days. The sun is out about 40% of daylight hours. The June record high is 100°F (2025) and the record low is 30°F (1997). June is one of the most comfortable months to visit.

Hartford weather in July

In July, Hartford averages a high of 85°F and a low of 65°F. It gets 3.9 in of precipitation over about 11 rainy days. The sun is out about 40% of daylight hours. The July record high is 103°F (2011) and the record low is 41°F (1984).

Hartford weather in August

In August, Hartford averages a high of 83°F and a low of 64°F. It gets 3.5 in of precipitation over about 10 rainy days. The sun is out about 42% of daylight hours. The August record high is 103°F (2001) and the record low is 38°F (1982).

Hartford weather in September

In September, Hartford averages a high of 76°F and a low of 56°F. It gets 4.0 in of precipitation over about 10 rainy days. The sun is out about 45% of daylight hours. The September record high is 98°F (1973) and the record low is 30°F (1974). September is one of the most comfortable months to visit.

Hartford weather in October

In October, Hartford averages a high of 64°F and a low of 44°F. It gets 4.2 in of precipitation over about 11 rainy days. The sun is out about 48% of daylight hours. The October record high is 88°F (1986) and the record low is 16°F (1996).

Hartford weather in November

In November, Hartford averages a high of 52°F and a low of 34°F. It gets 3.4 in of precipitation over about 10 rainy days. The sun is out about 57% of daylight hours. The November record high is 82°F (2024) and the record low is 5°F (1996).

Hartford weather in December

In December, Hartford averages a high of 42°F and a low of 26°F. It gets 3.8 in of precipitation over about 11 rainy days. The sun is out about 42% of daylight hours. The December record high is 75°F (1998) and the record low is -10°F (1980).

Sunshine, humidity and wind in Hartford

November is the sunniest month in Hartford, with sunshine about 57% of daylight hours. April is the cloudiest, at 39%. Over the year the sun shines about 43% of daylight hours. Hartford is cloudier than 71% of the US.

Humidity peaks in September at 72% and is lowest in March at 54%.

Wind averages 6 mph over the year, and March is the windiest month at 8 mph.

Hartford has about 16 days a year above 90°F. Hartford is cooler than 67% of the US.

Thunderstorms occur on about 11 days a year.

See where Hartford ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

First and last freeze in Hartford

The first fall freeze in Hartford typically comes around October 19, and the last spring freeze around April 18. That leaves a frost-free growing season of about 184 days.

Hartford weather records

The hottest temperature on record at the Hartford station is 103°F, on August 9, 2001. The coldest is -16°F, on January 18, 1997.

The wettest day on record brought 4.7 in of rain, on September 16, 1999.

41 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.8°F per decade since 1970.

The best time to visit Hartford

The most comfortable time to visit is typically May to June and September, when daytime highs sit near 75°F.

Winter (December–February) is cold, with average highs around 39°F and lows near 23°F. Snow is possible.

Spring (March–May) is mild, with average highs around 60°F and lows near 39°F.

Summer (June–August) is hot, with average highs around 82°F and lows near 63°F. It can feel humid.

Autumn (September–November) is mild, with average highs around 64°F and lows near 44°F.

Hartford climate questions

How much rain does Hartford get?

Hartford gets 42.8 in of precipitation in an average year, over about 128 rainy days.

What is the wettest month in Hartford?

October is the wettest month in Hartford, with 4.2 in. February is the driest, with 2.6 in.

How many rainy days does Hartford have a year?

Hartford has about 128 days with measurable rain in an average year. May has the most, about 13.

What is the hottest month in Hartford?

July is the warmest month in Hartford, with an average high of 85°F.

What is the coldest month in Hartford?

January is the coldest month in Hartford, with an average low of 20°F.

What is the record high temperature in Hartford?

The record high at the Hartford station is 103°F, set on August 9, 2001. The record low is -16°F, on January 18, 1997.

What is the sunniest month in Hartford?

November is the sunniest month in Hartford, with sunshine about 57% of daylight hours. April is the cloudiest.

When is the first frost in Hartford?

The first fall freeze in Hartford typically comes around October 19. The last spring freeze is around April 18.

What is the best time to visit Hartford?

The most comfortable time to visit is typically May to June and September, when daytime highs sit near 75°F.