Why stop at city-to-city? With Local Insights, you can compare neighborhoods, zip codes, or even exact addresses. Access 300+ hyperlocal data points—from schools and crime to housing and amenities—to see which area is the better fit.
| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 39°F | 29°F | 2.7" |
| February | 20°F | 40°F | 30°F | 2.9" |
| March | 28°F | 49°F | 38°F | 3.1" |
| April | 39°F | 63°F | 50°F | 3.6" |
| May | 48°F | 73°F | 60°F | 3.5" |
| June | 57°F | 80°F | 68°F | 5.1" |
| July | 64°F | 86°F | 74°F | 4.1" |
| August | 61°F | 83°F | 72°F | 4.2" |
| September | 54°F | 78°F | 65°F | 3.2" |
| October | 43°F | 66°F | 54°F | 4.1" |
| November | 33°F | 55°F | 43°F | 3.2" |
| December | 26°F | 44°F | 35°F | 4.0" |
| Index | Higganum | Connecticut | National |
| Air quality index | 41 | 43 | 42 |
| Pollution index | 4,117,250 | 8,629,883 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 291 |
| Days with moderate air quality | 66 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Colchester, CT | 5,282 | 33 | 34.0% |
| Moodus, CT | 1,844 | 37 | 26.0% |
| Essex Village, CT | 2,819 | 37 | 26.0% |
| Fenwick, CT | 46 | 37 | 26.0% |
| Old Saybrook Center, CT | 2,047 | 37 | 26.0% |
| Higganum, CT | 1,831 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Mountain Village, CO | 1,831 | 44 | 12.0% |
| King, WI | 1,831 | 37 | 26.0% |
| Star City, AR | 1,830 | 45 | 10.0% |
| French Lick, IN | 1,830 | 6 | 88.0% |
| Scotland Neck, NC | 1,832 | 36 | 28.0% |
| Higganum, CT | 1,831 | 41 | 18.0% |
Here are the best places to live in Connecticut
These are the 10 cheapest cities in Connecticut
Safest Cities In The US
These are the largest cities in Connecticut