January Weather in Connecticut United States

We show the January climate in Connecticut by comparing the average January weather in 2 representative places: Hartford and New Haven.

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Hartford
Connecticut, United States
New Haven
Connecticut, United States
Map

Average High and Low Temperature in January in Connecticut

Average High and Low Temperature in January in ConnecticutJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313115°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°FDecFeb24222138363626242339171413343232HartfordHartfordNew HavenNew Haven
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.

Hartford in January

Average Hourly Temperature in Hartford in JanuaryJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebfreezingfreezingvery cold

New Haven in January

Average Hourly Temperature in New Haven in JanuaryJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebfreezingfreezingvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in January in Connecticut

Chance of Clearer Skies in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFeb474848HartfordHartfordNew HavenNew Haven
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).

Daily Chance of Precipitation in January in Connecticut

Daily Chance of Precipitation in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFeb262422HartfordHartfordNew HavenNew Haven
The percentage of days in which precipitation is observed, excluding trace quantities.

Average Monthly Rainfall in January in Connecticut

Average Monthly Rainfall in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 inDecFeb2.11.81.82.42.22.1HartfordHartfordNew HavenNew Haven
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.

Average Monthly Snowfall in January in Connecticut

Average Monthly Snowfall in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inDecFeb9.010.010.46.77.47.8HartfordHartfordNew HavenNew Haven
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.

Hours of Daylight in January in Connecticut

Hours of Daylight in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr0 hr4 hr4 hr8 hr8 hr12 hr12 hr16 hr16 hr20 hr20 hr24 hr24 hrDecFeb9.29.510.0HartfordHartford
The number of hours during which the Sun is at least partly above the horizon.

Chance of Muggy Conditions in January in Connecticut

Chance of Muggy Conditions in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebHartfordHartford
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).

Average Wind Speed in January in Connecticut

Average Wind Speed in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mphDecFeb6.16.46.68.68.88.9HartfordHartfordNew HavenNew Haven
The average of mean hourly wind speeds at 10 meters above the ground.

Tourism Score in January in Connecticut

Tourism Score in January in ConnecticutJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313100224466881010DecFeb0.10.10.1HartfordHartfordNew HavenNew Haven
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in January in Connecticut

Beach/Pool Score in January in ConnecticutJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313100224466881010DecFebHartfordHartfordNew HavenNew Haven
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in January in Connecticut

Growing Season in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%20%20%40%40%60%60%80%80%100%100%DecFebHartfordHartfordNew HavenNew Haven
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in January in Connecticut

Growing Degree Days in January in ConnecticutJan1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°FDecFebHartfordHartfordNew HavenNew Haven
The average growing degree days accumulated over the course of January, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Water Temperature in January in Connecticut

Average Water Temperature in January in ConnecticutJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313136°F36°F38°F38°F40°F40°F42°F42°F44°F44°F46°F46°F48°F48°F50°F50°F52°F52°FDecFeb434038HartfordHartfordNew HavenNew Haven
The daily average wide-area surface water temperature.

Average Daily Incident Shortwave Solar Energy in January in Connecticut

Average Daily Incident Shortwave Solar Energy in January in ConnecticutJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWhDecFeb1.71.92.4HartfordHartfordNew HavenNew Haven
The average daily shortwave solar energy reaching the ground per square meter.

This report illustrates the typical weather for Hartford and New Haven, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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