Old Mystic, Connecticut Climate
United States
Pop. 3,554 Elev. 13 m / 43 ft
TZ: America/New_York (UTC-4) ·
Summers in Old Mystic are warm, with July highs around 85°F (29°C), while winters are frigid with January lows of 23°F (-5°C). Humidity pushes the summer feels-like temperature to 92°F (33°C), while wind chill can drive winter lows to 14°F (-10°C). Expect around 57 rainy days annually (36.6 in / 930 mm total), with snow on 7 days and 30 in (769 mm) of annual accumulation. The city averages 125 sunny days per year and around 33 thunderstorm days. Ocean water temperatures reach 71°F (22°C) in summer.
| Temperature | 85°F (29°C) high | 23°F (-5°C) low |
| Feels like | 92°F (34°C) high | 14°F (-10°C) low |
| Rain | 57 days | 36.6 in (930 mm) /yr |
| Snow | 7 days | 30.3 in (769 mm) /yr |
| Sky | 125 sunny | 33 stormy |
| Wind | 3.3 mph (1.5 m/s) avg |
Looking for a place with a climate like Old Mystic? Explore and filter 150,000+ cities worldwide.
Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
41
Jan 64
Feb 58
Mar 67
Apr 74
May 64
Jun 61
Jul 47
Aug 54
Sep 43
Oct 47
Nov 52
Dec Humidity (%)
56
Jan 61
Feb 57
Mar 56
Apr 71
May 69
Jun 72
Jul 65
Aug 71
Sep 67
Oct 62
Nov 60
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 9 mi Westerly State Airport (WST)
Ski resort 24 mi Yawgoo Valley Ski Area & Water Park
National park 77 mi Connecticut River Greenway State Park
Mountain peak
(5,089 ft) 191 mi Mount Lincoln
Hospital 2 mi Masonicare at Mystic
Hiking trail 2 mi Blue Trail
Interested in Old Mystic?
Hotels
Flights
Real Estate
Insurance
Connectivity
Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 36°F 2°C | 23°F -5°C | 1.3 in 34 mm | 3.7 in94 mm | 17 |
| February | 39°F 4°C | 26°F -3°C | 1.6 in 41 mm | 16.7 in424 mm | 6 |
| March | 52°F 11°C | 35°F 2°C | 4.6 in 117 mm | 0.2 in5 mm | 9 |
| April | 60°F 16°C | 44°F 7°C | 3.6 in 93 mm | 0.5 in12 mm | 6 |
| May | 67°F 19°C | 52°F 11°C | 6.8 in 172 mm | — | 3 |
| June | 79°F 26°C | 62°F 17°C | 2.0 in 52 mm | — | 10 |
| July | 85°F 29°C | 68°F 20°C | 3.4 in 87 mm | — | 9 |
| August | 80°F 27°C | 61°F 16°C | 2.5 in 62 mm | — | 14 |
| September | 76°F 24°C | 57°F 14°C | 2.4 in 62 mm | — | 10 |
| October | 63°F 17°C | 48°F 9°C | 3.6 in 92 mm | — | 17 |
| November | 51°F 11°C | 37°F 3°C | 2.2 in 56 mm | 0.0 in1 mm | 14 |
| December | 39°F 4°C | 25°F -4°C | 2.4 in 62 mm | 9.2 in233 mm | 10 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 17 | 1 |
| February | 6 | 2 |
| March | 9 | 2 |
| April | 6 | 3 |
| May | 3 | 7 |
| June | 10 | 3 |
| July | 9 | 4 |
| August | 14 | 2 |
| September | 10 | 3 |
| October | 17 | 3 |
| November | 14 | 2 |
| December | 10 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 46°F 8°C | 32°F 0°C |
| February | 39°F 4°C | 32°F 0°C |
| March | 43°F 6°C | 38°F 3°C |
| April | 48°F 9°C | 46°F 8°C |
| May | 55°F 13°C | 57°F 14°C |
| June | 65°F 18°C | 66°F 19°C |
| July | 71°F 22°C | 76°F 25°C |
| August | 71°F 22°C | 71°F 22°C |
| September | 70°F 21°C | 65°F 18°C |
| October | 69°F 21°C | 57°F 14°C |
| November | 60°F 16°C | 43°F 6°C |
| December | 50°F 10°C | 33°F 1°C |