Historical Weather in Hartford, CT
See 55+ years of weather history for any date in Hartford going back to 1970.
Part of Connecticut weather history · Connecticut temperature records
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Monthly Climate Averages
Historical temperature and precipitation averages for Hartford, CT, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 85°F / Low: 64°F
Coldest MonthJanuaryAvg High: 35°F / Low: 19°F
Jan
35°/ 19°
💧 8.6"
❄️ 2.1"
Feb
39°/ 21°
💧 8.2"
❄️ 2.2"
Mar
48°/ 29°
💧 9.2"
❄️ 2.1"
Apr
60°/ 39°
💧 9.3"
❄️ 1.9"
May
71°/ 49°
💧 8.5"
❄️ 1.3"
Jun
80°/ 58°
💧 9.2"
Jul
85°/ 64°
💧 10.3"
Aug
83°/ 62°
💧 10.5"
Sep
75°/ 54°
💧 11.5"
Oct
63°/ 42°
💧 11.3"
❄️ 3.0"
Nov
52°/ 34°
💧 9.6"
❄️ 1.9"
Dec
40°/ 24°
💧 8.9"
❄️ 1.9"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Hartford, CT Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Avg high Avg low
Hartford, CT Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rain (in) Snow (in)
Hartford, CT Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Cooler
Hotter
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Best Time to Visit Hartford, CT
Hartford, CT has no months that meet our "pleasant" threshold — every season has tradeoffs.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal
Hartford Temperature Records
- Record High: The hottest temperature ever recorded in Hartford, CT is 103°F, set on August 9, 2001.
- Record Low: The coldest temperature ever recorded in Hartford, CT is -25°F, set on February 14, 2016.
- Data Coverage: Based on 57 years of data from NOAA weather station: HARTFORD BRAINARD FLD.
All-Time Record High
103°F
August 9, 2001
All-Time Record Low
-25°F
February 14, 2016
Monthly Temperature Records in Hartford
| Month | Record High | Record Low |
|---|---|---|
| January | 72°F(2007) | -21°F(1984) |
| February | 80°F(2018) | -25°F(2016) |
| March | 89°F(1998) | -8°F(2014) |
| April | 96°F(1976) | 8°F(1997) |
| May | 99°F(1996) | 20°F(1997) |
| June | 101°F(2025) | 27°F(1972) |
| July | 103°F(2011) | 37°F(2001) |
| August | 103°F(2001) | 37°F(1987) |
| September | 99°F(1983) | 24°F(1991) |
| October | 89°F(2007) | 16°F(2020) |
| November | 84°F(2024) | 1°F(1987) |
| December | 76°F(1998) | -14°F(1980) |
Hartford Snow RecordsSee the top 10 snowiest days ever recorded
→Holiday Weather in Hartford
Weather Analysis & Trends
RecordsHottest Temperatures Ever Recorded in Every US StateAll 50 state record highs ranked, including Connecticut.Severe WeatherTornado Season 2026: Forecasts & What to ExpectAn EF5 already, and the peak still ahead.Climate ForecastEl Niño 2026: What Every US Region Should Expect85% likely by late 2026. Region-by-region impact analysis.