Plymouth, Connecticut Climate
United States
Pop. 12,284 Elev. 213 m / 699 ft
TZ: America/New_York (UTC-4) ·
Plymouth sees mild summers peaking at 84°F (29°C) in July, and frigid winters that bottom out around 19°F (-7°C) in January. Humidity pushes the summer feels-like temperature to 92°F (33°C), while wind chill can drive winter lows to 10°F (-12°C). Precipitation occurs on roughly 64 days per year (42.5 in / 1080 mm total), with snow on 10 days and 46 in (1163 mm) of annual accumulation. The city averages 115 sunny days per year and around 37 thunderstorm days. Ocean water temperatures reach 76°F (24°C) in summer.
| Temperature | 84°F (29°C) high | 19°F (-7°C) low |
| Feels like | 92°F (33°C) high | 10°F (-12°C) low |
| Rain | 64 days | 42.5 in (1080 mm) /yr |
| Snow | 10 days | 45.8 in (1163 mm) /yr |
| Sky | 115 sunny | 37 stormy |
| Wind | 3.4 mph (1.5 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Jun, Aug, Sep
Sky & Air by Month
Cloud cover (%)
47
Jan 67
Feb 59
Mar 69
Apr 77
May 65
Jun 59
Jul 45
Aug 53
Sep 44
Oct 57
Nov 57
Dec Humidity (%)
58
Jan 63
Feb 55
Mar 53
Apr 72
May 71
Jun 74
Jul 66
Aug 72
Sep 69
Oct 64
Nov 61
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 30 mi Tweed New Haven Airport (HVN)
Ski resort 9 mi Mount Southington Ski Area
National park 56 mi Connecticut River Greenway State Park
Mountain peak
(4,971 ft) 174 mi Schofield Cobble
Hospital 8 mi Waterbury Hospital
Hiking trail 2 mi Town Hill Road Connector
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 33°F 1°C | 19°F -7°C | 1.0 in 26 mm | 5.9 in149 mm | 15 |
| February | 36°F 2°C | 22°F -5°C | 1.5 in 38 mm | 18.1 in459 mm | 5 |
| March | 52°F 11°C | 33°F 1°C | 3.6 in 91 mm | 0.3 in7 mm | 9 |
| April | 61°F 16°C | 42°F 6°C | 3.0 in 76 mm | 6.6 in168 mm | 5 |
| May | 67°F 20°C | 52°F 11°C | 9.6 in 243 mm | — | 4 |
| June | 78°F 26°C | 61°F 16°C | 3.2 in 82 mm | — | 9 |
| July | 84°F 29°C | 67°F 20°C | 4.8 in 121 mm | — | 10 |
| August | 79°F 26°C | 59°F 15°C | 2.5 in 63 mm | — | 15 |
| September | 75°F 24°C | 55°F 13°C | 3.7 in 93 mm | — | 10 |
| October | 62°F 17°C | 45°F 7°C | 5.7 in 145 mm | — | 18 |
| November | 48°F 9°C | 35°F 2°C | 2.2 in 56 mm | 0.2 in5 mm | 9 |
| December | 36°F 2°C | 23°F -5°C | 1.8 in 46 mm | 14.8 in375 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 0 |
| February | 5 | 1 |
| March | 9 | 2 |
| April | 5 | 1 |
| May | 4 | 7 |
| June | 9 | 6 |
| July | 10 | 8 |
| August | 15 | 1 |
| September | 10 | 3 |
| October | 18 | 5 |
| November | 9 | 1 |
| December | 6 | 2 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 43°F 6°C | 34°F 1°C |
| February | 36°F 2°C | 33°F 0°C |
| March | 41°F 5°C | 37°F 3°C |
| April | 51°F 10°C | 45°F 7°C |
| May | 57°F 14°C | 56°F 13°C |
| June | 70°F 21°C | 65°F 19°C |
| July | 76°F 24°C | 76°F 24°C |
| August | 76°F 24°C | 72°F 22°C |
| September | 72°F 22°C | 67°F 20°C |
| October | 70°F 21°C | 59°F 15°C |
| November | 59°F 15°C | 47°F 8°C |
| December | 49°F 9°C | 36°F 2°C |