Derby, Connecticut Climate
United States
Pop. 12,700 Elev. 25 m / 82 ft
TZ: America/New_York (UTC-4) ·
Summers in Derby are mild, with July highs around 80°F (27°C), while winters are cold with January lows of 27°F (-3°C). Humidity pushes the summer feels-like temperature to 85°F (29°C), while wind chill can drive winter lows to 17°F (-8°C). Expect around 64 rainy days annually (44.3 in / 1126 mm total), with snow on 5 days and 31 in (794 mm) of annual accumulation. The city averages 122 sunny days per year and around 28 thunderstorm days. Ocean water temperatures reach 76°F (24°C) in summer.
| Temperature | 80°F (27°C) high | 27°F (-3°C) low |
| Feels like | 85°F (29°C) high | 17°F (-8°C) low |
| Rain | 64 days | 44.3 in (1126 mm) /yr |
| Snow | 5 days | 31.3 in (794 mm) /yr |
| Sky | 122 sunny | 28 stormy |
| Wind | 4.2 mph (1.9 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
42
Jan 64
Feb 55
Mar 67
Apr 72
May 64
Jun 56
Jul 42
Aug 52
Sep 42
Oct 50
Nov 55
Dec Humidity (%)
60
Jan 66
Feb 66
Mar 66
Apr 79
May 79
Jun 79
Jul 69
Aug 74
Sep 68
Oct 65
Nov 64
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 11 mi Tweed New Haven Airport (HVN)
Ski resort 20 mi Mount Southington Ski Area
National park 79 mi Connecticut River Greenway State Park
Mountain peak
(4,971 ft) 197 mi Schofield Cobble
Hospital 1 mi Griffin Hospital
Hiking trail 1 mi
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 35°F 2°C | 27°F -3°C | 1.2 in 30 mm | 4.3 in109 mm | 16 |
| February | 37°F 3°C | 28°F -2°C | 2.9 in 73 mm | 16.3 in415 mm | 6 |
| March | 48°F 9°C | 37°F 3°C | 5.0 in 128 mm | 0.1 in3 mm | 9 |
| April | 55°F 13°C | 44°F 7°C | 4.8 in 122 mm | 0.7 in18 mm | 5 |
| May | 62°F 17°C | 53°F 12°C | 7.9 in 201 mm | — | 5 |
| June | 73°F 23°C | 63°F 17°C | 2.3 in 58 mm | — | 9 |
| July | 80°F 27°C | 71°F 22°C | 3.2 in 81 mm | — | 10 |
| August | 77°F 25°C | 66°F 19°C | 2.2 in 55 mm | — | 16 |
| September | 73°F 23°C | 63°F 17°C | 2.8 in 71 mm | — | 8 |
| October | 63°F 17°C | 53°F 12°C | 6.8 in 174 mm | — | 17 |
| November | 51°F 10°C | 42°F 6°C | 2.7 in 69 mm | 0.0 in1 mm | 13 |
| December | 39°F 4°C | 30°F -1°C | 2.5 in 64 mm | 9.8 in248 mm | 8 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 16 | 1 |
| February | 6 | 1 |
| March | 9 | 2 |
| April | 5 | 4 |
| May | 5 | 5 |
| June | 9 | 1 |
| July | 10 | 3 |
| August | 16 | 1 |
| September | 8 | 2 |
| October | 17 | 4 |
| November | 13 | 3 |
| December | 8 | 1 |
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 |