Weatheo

Hartford Weather by Month

Average temperatures, rainfall and humidity for Hartford, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Hartford month looks like before you travel — then check the live Hartford forecast for the days ahead.

Warmest month

July

29°C average high

Coolest month

January

-5°C average low

Wettest month

July

111 mm of rain

Driest month

February

40 mm of rain

Average temperature and rainfall in Hartford by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January3°C-5°C-22°C / 19°C
52 mm
69%12 km/h
February4°C-5°C-23°C / 22°C
40 mm
68%12 km/h
March9°C-1°C-18°C / 26°C
57 mm
63%14 km/h
April15°C5°C-6°C / 34°C
82 mm
63%13 km/h
May22°C10°C0°C / 34°C
102 mm
67%11 km/h
June26°C15°C5°C / 38°C
94 mm
71%10 km/h
July29°C19°C11°C / 38°C
111 mm
74%9 km/h
August28°C17°C9°C / 35°C
80 mm
75%9 km/h
September24°C14°C3°C / 34°C
87 mm
77%9 km/h
October18°C9°C-5°C / 30°C
86 mm
76%10 km/h
November11°C2°C-13°C / 26°C
57 mm
69%11 km/h
December6°C-2°C-16°C / 19°C
78 mm
73%11 km/h

Best time to visit Hartford

The most comfortable time to visit Hartford is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around July, totalling about 926 mm a year.

Travellers who prefer heat should aim for July, when highs average 29°C. July is the month to avoid if rain would spoil your plans — it averages 111 mm, roughly 3× the rainfall of the driest month (February).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hartford forecast for what is happening now.

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