Derby and West Haven have remarkably similar climates.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Derby | Metric | West Haven |
|---|---|---|
| 204 days | Sunny daysclear or partly cloudy skies | 202 days |
| 48 in | Precipitationper year | 45 in |
| 125 days | Wet daysrain or snow per year | 125 days |
| 36 in | Snowfallper year | 40 in |
| 9 days | Hot daysabove 90 °F | 8 days |
| 130 days | Freezing nightsat or below 32 °F | 110 days |
| 71% | Humidityaverage relative | 71% |
| 50 °F | Average temperatureyear round | 52 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Derby high | 36 | 38 | 47 | 58 | 69 | 77 | 82 | 82 | 75 | 63 | 52 | 41 |
| West Haven high | 38 | 40 | 47 | 58 | 68 | 77 | 82 | 82 | 75 | 64 | 53 | 43 |
| Derby low | 19 | 19 | 28 | 38 | 47 | 58 | 63 | 62 | 54 | 41 | 32 | 24 |
| West Haven low | 22 | 23 | 29 | 39 | 49 | 59 | 65 | 64 | 56 | 44 | 35 | 28 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Derby | 3.8 | 3.4 | 4.5 | 4.1 | 3.6 | 3.9 | 3.4 | 4.1 | 4.0 | 4.5 | 3.7 | 4.7 |
| West Haven | 3.5 | 3.1 | 4.2 | 3.8 | 3.4 | 3.9 | 3.5 | 4.1 | 4.0 | 4.2 | 3.5 | 4.2 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Derby | 18 | 16 | 17 | 16 | 15 | 15 | 19 | 19 | 18 | 19 | 17 | 17 |
| West Haven | 18 | 16 | 17 | 16 | 15 | 15 | 18 | 18 | 17 | 19 | 17 | 17 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Derby vs another city
- Derby vs Ansonia, CT
- Derby vs Shelton, CT
- Derby vs Orange, CT
- Derby vs Milford, CT
- Derby vs Daniels Farm, CT
- Derby vs New York, NY
- Derby vs Los Angeles, CA
- Derby vs Chicago, IL
- Derby vs Houston, TX
- Derby vs Phoenix, AZ
- Derby vs Philadelphia, PA
West Haven vs another city
- West Haven vs Orange, CT
- West Haven vs New Haven, CT
- West Haven vs East Haven, CT
- West Haven vs Milford, CT
- West Haven vs Ansonia, CT
- West Haven vs New York, NY
- West Haven vs Los Angeles, CA
- West Haven vs Chicago, IL
- West Haven vs Houston, TX
- West Haven vs Phoenix, AZ
- West Haven vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).