Weather history and climate summary information is available for the following locations:
- Groton CT
- Hartford
- Stratford
- Windsor Locks
Warmest June Days
The warmest June days in Connecticut are:
| Windsor Locks, Connecticut | 1973 | 98.6°F |
| Windsor Locks, Connecticut | 2008 | 98.1°F |
| Hartford, Connecticut | 1983 | 98.1°F |
| Hartford, Connecticut | 1999 | 98.1°F |
| Hartford, Connecticut | 1984 | 98.1°F |
Coldest June Days
The coldest June days in Connecticut were:
| Windsor Locks, Connecticut | 2002 | 35.1°F |
| Windsor Locks, Connecticut | 1986 | 37°F |
| Windsor Locks, Connecticut | 2001 | 37.9°F |
| Windsor Locks, Connecticut | 2009 | 39°F |
| Windsor Locks, Connecticut | 1980 | 39.9°F |
Wettest June Days
The wettest single days in June occurred:
| Windsor Locks, Connecticut | 1992 | 3.5 inches |
| Windsor Locks, Connecticut | 2000 | 3.4 inches |
| Stratford, Connecticut | 1982 | 3.3 inches |
| Stratford, Connecticut | 1992 | 3 inches |
| Windsor Locks, Connecticut | 1989 | 2.8 inches |