West Haven-Sylvan has around 56 fewer freezing nights a year.
Philadelphia picks up around 13 more inches of snow each winter. Philadelphia endures about 23 more days above 90 °F each year.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Philadelphia | Metric | West Haven-Sylvan |
|---|---|---|
| 203 days | Sunny daysclear or partly cloudy skies | 160 days |
| 43 in | Precipitationper year | 48 in |
| 120 days | Wet daysrain or snow per year | 143 days |
| 18 in | Snowfallper year | 6 in |
| 36 days | Hot daysabove 90 °F | 14 days |
| 76 days | Freezing nightsat or below 32 °F | 19 days |
| 68% | Humidityaverage relative | 75% |
| 57 °F | Average temperatureyear round | 55 °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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Philadelphia high | 41 | 44 | 53 | 65 | 75 | 84 | 89 | 86 | 80 | 67 | 56 | 46 |
| West Haven-Sylvan high | 48 | 53 | 57 | 62 | 69 | 74 | 81 | 82 | 76 | 64 | 53 | 47 |
| Philadelphia low | 27 | 29 | 35 | 45 | 55 | 65 | 70 | 68 | 61 | 50 | 40 | 32 |
| West Haven-Sylvan low | 38 | 38 | 40 | 43 | 49 | 53 | 56 | 57 | 53 | 46 | 41 | 37 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Philadelphia | 3.2 | 3.0 | 4.1 | 3.6 | 3.5 | 3.8 | 3.9 | 3.7 | 4.1 | 3.6 | 2.9 | 4.0 |
| West Haven-Sylvan | 6.6 | 5.1 | 5.7 | 4.5 | 2.8 | 1.7 | 0.5 | 0.6 | 1.6 | 4.2 | 6.9 | 7.6 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Philadelphia | 16 | 16 | 16 | 15 | 16 | 16 | 18 | 19 | 18 | 19 | 17 | 16 |
| West Haven-Sylvan | 7 | 8 | 8 | 9 | 13 | 15 | 24 | 25 | 21 | 15 | 8 | 7 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Philadelphia vs another city
- Philadelphia vs Elkins Park, PA
- Philadelphia vs Bala Cynwyd, PA
- Philadelphia vs Palmyra, NJ
- Philadelphia vs Camden, NJ
- Philadelphia vs Wyndmoor, PA
- Philadelphia vs Merion Station, PA
- Philadelphia vs New York, NY
- Philadelphia vs Los Angeles, CA
- Philadelphia vs Chicago, IL
- Philadelphia vs Houston, TX
- Philadelphia vs Phoenix, AZ
- Philadelphia vs San Antonio, TX
West Haven-Sylvan vs another city
- West Haven-Sylvan vs West Slope, OR
- West Haven-Sylvan vs Cedar Mill, OR
- West Haven-Sylvan vs Cedar Hills, OR
- West Haven-Sylvan vs Raleigh Hills, OR
- West Haven-Sylvan vs Marlene Village, OR
- West Haven-Sylvan vs Beaverton, OR
- West Haven-Sylvan vs New York, NY
- West Haven-Sylvan vs Los Angeles, CA
- West Haven-Sylvan vs Chicago, IL
- West Haven-Sylvan vs Houston, TX
- West Haven-Sylvan vs Phoenix, AZ
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).