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CTConnecticut rankings

Towns with the mildest winters in Connecticut

Ranked by the typical overnight low in January, 1991–2020, from NOAA’s gridded climate normals for each town. Neighboring towns on the same 5 km grid square have the same numbers, so each square is listed once, under its largest town. 155 towns with 2,500+ residents.

NOAA U.S. Climate Normals, 1991–2020

Killingly
Connecticut · Mildest winters

Where Killingly lands: #105 of 155

18.1° · Visit Killingly →

Stamford 1 Stamford 24.1° January high 40° Darien 2 Darien Western Connecticut Planning Region 24.1° January high 40° Westport 3 Westport Western Connecticut Planning Region 23.9° January high 40°
#TownJanuary lowJanuary highSnow a year
1 Stamford Stamford137,144 people 24.1° 40° 34 in
2 Darien DarienWestern Connecticut Planning Region · 21,936 people 24.1° 40° 34 in
3 Westport WestportWestern Connecticut Planning Region · 27,528 people 23.9° 40° 34 in
4 Bridgeport Bridgeport149,153 people 23.6° 39° 34 in
5 Stratford StratfordGreater Bridgeport Planning Region · 52,790 people 23.6° 39° 34 in
6 Stonington StoningtonSoutheastern Connecticut Planning Region · 18,478 people 23.6° 39° 25 in
7 Norwalk Norwalk92,187 people 23.5° 40° 34 in
8 Milford Milford52,684 people 23.4° 39° 34 in
9 New London New London27,625 people 23.4° 39° 25 in
10 New Haven New Haven134,349 people 23.2° 39° 34 in
11 Groton GrotonSoutheastern Connecticut Planning Region · 38,130 people 23.2° 39° 25 in
12 Groton Groton9,490 people 23.2° 39° 25 in
13 Map of West Haven West Haven55,351 people 23.1° 39° 34 in
14 Branford BranfordSouth Central Connecticut Planning Region · 28,217 people 23.0° 39° 34 in
15 Greenwich GreenwichWestern Connecticut Planning Region · 63,856 people 22.8° 39° 34 in
16 Old Lyme Old LymeLower Connecticut River Valley Planning Region · 7,679 people 22.8° 39° 25 in
17 Waterford WaterfordSoutheastern Connecticut Planning Region · 19,673 people 22.7° 39° 25 in
18 Old Saybrook Old SaybrookLower Connecticut River Valley Planning Region · 10,575 people 22.1° 39° 25 in
19 East Lyme East LymeSoutheastern Connecticut Planning Region · 18,721 people 21.9° 39° 25 in
20 Fairfield FairfieldGreater Bridgeport Planning Region · 63,416 people 21.8° 38° 34 in
21 Westbrook WestbrookLower Connecticut River Valley Planning Region · 6,856 people 21.6° 39° 25 in
22 East Haven East HavenSouth Central Connecticut Planning Region · 27,806 people 21.5° 38° 34 in
23 Orange OrangeSouth Central Connecticut Planning Region · 14,315 people 21.5° 38° 34 in
24 Clinton ClintonLower Connecticut River Valley Planning Region · 13,377 people 21.4° 39° —
25 Essex EssexLower Connecticut River Valley Planning Region · 6,794 people 21.3° 38° 28 in
26 New Canaan New CanaanWestern Connecticut Planning Region · 20,870 people 21.2° 38° 34 in
27 Ledyard LedyardSoutheastern Connecticut Planning Region · 15,433 people 21.0° 38° 28 in
28 Deep River Deep RiverLower Connecticut River Valley Planning Region · 4,458 people 20.7° 38° 28 in
29 Weston WestonWestern Connecticut Planning Region · 10,396 people 20.4° 38° 49 in
30 North Stonington North StoningtonSoutheastern Connecticut Planning Region · 5,160 people 20.4° 38° 38 in
31 Killingworth KillingworthLower Connecticut River Valley Planning Region · 6,240 people 20.3° 38° —
32 Wilton WiltonWestern Connecticut Planning Region · 18,777 people 20.2° 37° 49 in
33 Madison MadisonSouth Central Connecticut Planning Region · 17,616 people 20.2° 38° —
34 Chester ChesterLower Connecticut River Valley Planning Region · 3,825 people 20.2° 37° 28 in
35 Trumbull TrumbullGreater Bridgeport Planning Region · 37,281 people 20.1° 37° 49 in
36 Guilford GuilfordSouth Central Connecticut Planning Region · 22,108 people 20.1° 38° —
37 Montville MontvilleSoutheastern Connecticut Planning Region · 17,950 people 20.1° 37° 28 in
38 Map of Derby Derby12,487 people 20.1° 38° 49 in
39 Preston PrestonSoutheastern Connecticut Planning Region · 4,821 people 19.9° 38° 28 in
40 Salem SalemSoutheastern Connecticut Planning Region · 4,282 people 19.9° 37° 28 in
41 North Haven North HavenSouth Central Connecticut Planning Region · 24,336 people 19.8° 37° 34 in
42 Easton EastonGreater Bridgeport Planning Region · 7,670 people 19.8° 37° 49 in
43 East Haddam East HaddamLower Connecticut River Valley Planning Region · 8,969 people 19.7° 37° 28 in
44 Map of Middletown Middletown47,958 people 19.6° 37° 39 in
45 Cromwell CromwellLower Connecticut River Valley Planning Region · 14,334 people 19.5° 37° 52 in
46 Haddam HaddamLower Connecticut River Valley Planning Region · 8,644 people 19.5° 37° —
47 Voluntown VoluntownNortheastern Connecticut Planning Region · 2,604 people 19.5° 37° 38 in
48 Shelton Shelton41,889 people 19.4° 37° 34 in
49 Norwich Norwich39,973 people 19.4° 37° 28 in
50 Wethersfield WethersfieldCapitol Planning Region · 27,250 people 19.4° 37° 52 in
51 Rocky Hill Rocky HillCapitol Planning Region · 20,880 people 19.4° 37° 52 in
52 Map of North Branford North BranfordSouth Central Connecticut Planning Region · 13,503 people 19.4° 37° 34 in
53 Griswold GriswoldSoutheastern Connecticut Planning Region · 11,530 people 19.4° 37° 38 in
54 Hamden HamdenSouth Central Connecticut Planning Region · 61,045 people 19.3° 37° 34 in
55 Newington NewingtonCapitol Planning Region · 30,896 people 19.3° 37° 52 in
56 Ansonia Ansonia19,033 people 19.3° 37° 49 in
57 Colchester ColchesterSoutheastern Connecticut Planning Region · 15,648 people 19.3° 37° 39 in
58 Portland PortlandLower Connecticut River Valley Planning Region · 9,434 people 19.3° 37° 52 in
59 Woodbridge WoodbridgeSouth Central Connecticut Planning Region · 9,073 people 19.3° 37° 34 in
60 Durham DurhamLower Connecticut River Valley Planning Region · 7,208 people 19.3° 37° —
61 Lisbon LisbonSoutheastern Connecticut Planning Region · 4,211 people 19.3° 37° 38 in
62 East Hampton East HamptonLower Connecticut River Valley Planning Region · 12,925 people 19.2° 36° 39 in
63 Jewett City Jewett City3,429 people 19.2° 37° 38 in
64 Hartford Hartford121,127 people 19.1° 37° 52 in
65 East Hartford East HartfordCapitol Planning Region · 50,918 people 19.1° 37° 52 in
66 Map of Wallingford WallingfordSouth Central Connecticut Planning Region · 44,362 people 19.1° 37° 39 in
67 Glastonbury GlastonburyCapitol Planning Region · 35,293 people 19.1° 36° 52 in
68 Map of Berlin BerlinCapitol Planning Region · 20,361 people 19.1° 37° 39 in
69 Redding ReddingWestern Connecticut Planning Region · 8,780 people 19.1° 36° 49 in
70 Meriden Meriden60,545 people 19.0° 37° 39 in
71 New Britain New Britain74,223 people 18.9° 36° 39 in
72 Ridgefield RidgefieldWestern Connecticut Planning Region · 25,109 people 18.9° 36° 49 in
73 Sprague SpragueSoutheastern Connecticut Planning Region · 2,962 people 18.9° 37° 38 in
74 Monroe MonroeGreater Bridgeport Planning Region · 18,949 people 18.8° 36° 49 in
75 Hebron HebronCapitol Planning Region · 9,157 people 18.8° 36° 39 in
76 Marlborough MarlboroughCapitol Planning Region · 6,130 people 18.8° 37° 39 in
77 MiddlefieldLower Connecticut River Valley Planning Region · 4,243 people 18.8° 36° 39 in
78 Sterling SterlingNortheastern Connecticut Planning Region · 3,629 people 18.8° 37° 38 in
79 Plainfield PlainfieldNortheastern Connecticut Planning Region · 15,141 people 18.7° 37° 38 in
80 West Hartford West HartfordCapitol Planning Region · 63,620 people 18.6° 36° 39 in
81 Manchester ManchesterCapitol Planning Region · 59,635 people 18.6° 37° 52 in
82 Windsor WindsorCapitol Planning Region · 29,468 people 18.6° 36° 52 in
83 Cheshire CheshireNaugatuck Valley Planning Region · 29,040 people 18.6° 37° 39 in
84 South Windsor South WindsorCapitol Planning Region · 26,907 people 18.6° 37° 52 in
85 Bethel BethelWestern Connecticut Planning Region · 20,796 people 18.6° 36° 49 in
86 Lebanon LebanonSoutheastern Connecticut Planning Region · 7,116 people 18.6° 37° 39 in
87 Canterbury CanterburyNortheastern Connecticut Planning Region · 5,124 people 18.6° 37° 38 in
88 Southington SouthingtonCapitol Planning Region · 43,803 people 18.5° 36° 39 in
89 Plainville PlainvilleCapitol Planning Region · 17,551 people 18.5° 36° 39 in
90 Seymour SeymourNaugatuck Valley Planning Region · 16,889 people 18.5° 36° 49 in
91 Farmington FarmingtonCapitol Planning Region · 27,134 people 18.4° 36° 39 in
92 Map of Bloomfield BloomfieldCapitol Planning Region · 21,754 people 18.4° 36° 52 in
93 East Windsor East WindsorCapitol Planning Region · 11,213 people 18.4° 36° 52 in
94 Columbia ColumbiaCapitol Planning Region · 5,300 people 18.4° 36° 39 in
95 Danbury Danbury87,263 people 18.3° 36° 49 in
96 Newtown NewtownWestern Connecticut Planning Region · 27,593 people 18.3° 36° 49 in
97 Windsor Locks Windsor LocksCapitol Planning Region · 12,579 people 18.2° 36° 52 in
98 Brooklyn BrooklynNortheastern Connecticut Planning Region · 8,517 people 18.2° 37° 38 in
99 Beacon Falls Beacon FallsNaugatuck Valley Planning Region · 6,147 people 18.2° 36° 47 in
100 Andover AndoverCapitol Planning Region · 3,152 people 18.2° 36° 39 in
101 Vernon VernonCapitol Planning Region · 30,577 people 18.1° 36° 52 in
102 Simsbury SimsburyCapitol Planning Region · 25,066 people 18.1° 36° 52 in
103 Windham WindhamSoutheastern Connecticut Planning Region · 23,961 people 18.1° 37° 39 in
104 Avon AvonCapitol Planning Region · 18,946 people 18.1° 36° 39 in
105 Killingly KillinglyNortheastern Connecticut Planning Region · 17,867 people 18.1° 36° 62 in
106 Coventry CoventryCapitol Planning Region · 12,326 people 18.0° 36° 39 in
107 Bethany BethanySouth Central Connecticut Planning Region · 5,288 people 18.0° 36° 49 in
108 Bolton BoltonCapitol Planning Region · 4,853 people 18.0° 36° 39 in
109 Danielson Danielson4,209 people 18.0° 36° 62 in
110 Map of Enfield EnfieldCapitol Planning Region · 41,090 people 17.9° 36° 52 in
111 Mansfield MansfieldCapitol Planning Region · 25,358 people 17.9° 36° 39 in
112 East Granby East GranbyCapitol Planning Region · 5,238 people 17.9° 36° 52 in
113 Map of Brookfield BrookfieldWestern Connecticut Planning Region · 17,706 people 17.8° 36° 49 in
114 Suffield SuffieldCapitol Planning Region · 15,702 people 17.8° 36° 52 in
115 Map of Oxford OxfordNaugatuck Valley Planning Region · 12,991 people 17.8° 36° 47 in
116 Putnam PutnamNortheastern Connecticut Planning Region · 9,292 people 17.8° 36° 39 in
117 Bristol Bristol61,462 people 17.7° 36° 39 in
118 Naugatuck Naugatuck31,800 people 17.7° 36° 47 in
119 Southbury SouthburyNaugatuck Valley Planning Region · 20,071 people 17.7° 36° 47 in
120 Pomfret PomfretNortheastern Connecticut Planning Region · 4,317 people 17.7° 36° 39 in
121 Ellington EllingtonCapitol Planning Region · 16,455 people 17.6° 36° 52 in
122 Waterbury Waterbury114,869 people 17.5° 35° 47 in
123 Thompson ThompsonNortheastern Connecticut Planning Region · 9,337 people 17.5° 35° 39 in
124 Somers SomersCapitol Planning Region · 10,308 people 17.4° 36° 52 in
125 Prospect ProspectNaugatuck Valley Planning Region · 9,458 people 17.4° 35° 39 in
126 Tolland TollandCapitol Planning Region · 14,606 people 17.3° 35° 39 in
127 New Fairfield New FairfieldWestern Connecticut Planning Region · 13,584 people 17.3° 35° 49 in
128 Willington WillingtonCapitol Planning Region · 5,575 people 17.3° 35° 39 in
129 Granby GranbyCapitol Planning Region · 11,184 people 17.2° 35° 52 in
130 Burlington BurlingtonNorthwest Hills Planning Region · 9,680 people 17.2° 35° 39 in
131 Middlebury MiddleburyNaugatuck Valley Planning Region · 7,807 people 17.2° 35° 47 in
132 Ashford AshfordNortheastern Connecticut Planning Region · 4,226 people 17.2° 35° 39 in
133 Woodstock WoodstockNortheastern Connecticut Planning Region · 8,319 people 17.1° 35° 52 in
134 Stafford StaffordCapitol Planning Region · 11,511 people 17.0° 35° 64 in
135 Canton CantonCapitol Planning Region · 10,144 people 17.0° 35° 39 in
136 New Milford New MilfordWestern Connecticut Planning Region · 28,334 people 16.9° 35° 47 in
137 Sherman ShermanWestern Connecticut Planning Region · 3,554 people 16.9° 35° 58 in
138 Wolcott WolcottNaugatuck Valley Planning Region · 16,279 people 16.8° 35° 39 in
139 Woodbury WoodburyNaugatuck Valley Planning Region · 9,833 people 16.8° 35° 47 in
140 Plymouth PlymouthNaugatuck Valley Planning Region · 11,746 people 16.7° 35° 39 in
141 Watertown WatertownNaugatuck Valley Planning Region · 22,253 people 16.5° 35° 47 in
142 New Hartford New HartfordNorthwest Hills Planning Region · 6,675 people 16.3° 34° 59 in
143 Thomaston ThomastonNaugatuck Valley Planning Region · 7,492 people 16.2° 35° 47 in
144 Harwinton HarwintonNorthwest Hills Planning Region · 5,575 people 15.7° 34° 59 in
145 Map of Barkhamsted BarkhamstedNorthwest Hills Planning Region · 3,678 people 15.7° 34° 51 in
146 Washington WashingtonNorthwest Hills Planning Region · 3,676 people 15.7° 34° 47 in
147 Map of Bethlehem BethlehemNaugatuck Valley Planning Region · 3,423 people 15.4° 34° 47 in
148 Kent KentNorthwest Hills Planning Region · 3,056 people 15.3° 33° 59 in
149 Litchfield LitchfieldNorthwest Hills Planning Region · 8,260 people 15.2° 33° 59 in
150 Salisbury SalisburyNorthwest Hills Planning Region · 4,224 people 15.1° 33° 50 in
151 Torrington Torrington35,547 people 14.9° 33° 59 in
152 Sharon SharonNorthwest Hills Planning Region · 2,723 people 14.8° 33° 75 in
153 Winchester WinchesterNorthwest Hills Planning Region · 10,284 people 14.7° 33° 59 in
154 North Canaan North CanaanNorthwest Hills Planning Region · 3,221 people 14.7° 34° 75 in
155 Goshen GoshenNorthwest Hills Planning Region · 3,196 people 14.4° 32° 75 in

How this ranking works

We rank every town by the typical overnight low in January, 1991–2020, from NOAA’s gridded climate normals for each town. The town with the highest figure ranks #1. Normals are 30-year averages, not a forecast, and each town’s Climate page shows its whole year month by month.

Temperatures and rainfall come from NOAA’s gridded normals, about 5 km (3 miles) square, read at each town’s center, so hills and coastlines are built in. Towns whose centers fall in the same square have the same numbers, so only the largest of them is listed.

Only towns with at least 2,500 residents are ranked; Census estimates for smaller places are too uncertain. Population and income: U.S. Census Bureau American Community Survey 5-year estimates. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020. Town photos: Wikimedia Commons, credited on each town’s page.

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