Philadelphia endures about 26 more days above 90 °F each year.
Round Lake Beach picks up around 24 more inches of snow each winter. Philadelphia has around 58 fewer freezing nights a year.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Philadelphia | Metric | Round Lake Beach |
|---|---|---|
| 203 days | Sunny daysclear or partly cloudy skies | 180 days |
| 43 in | Precipitationper year | 36 in |
| 120 days | Wet daysrain or snow per year | 129 days |
| 18 in | Snowfallper year | 42 in |
| 36 days | Hot daysabove 90 °F | 10 days |
| 76 days | Freezing nightsat or below 32 °F | 134 days |
| 68% | Humidityaverage relative | 71% |
| 57 °F | Average temperatureyear round | 49 °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 |
| Round Lake Beach high | 30 | 34 | 45 | 57 | 69 | 78 | 82 | 81 | 74 | 61 | 47 | 35 |
| Philadelphia low | 27 | 29 | 35 | 45 | 55 | 65 | 70 | 68 | 61 | 50 | 40 | 32 |
| Round Lake Beach low | 15 | 17 | 27 | 37 | 48 | 58 | 63 | 62 | 54 | 43 | 31 | 21 |
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 |
| Round Lake Beach | 2.2 | 2.0 | 2.5 | 4.3 | 3.9 | 3.4 | 3.1 | 3.6 | 2.9 | 3.2 | 2.6 | 2.4 |
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 |
| Round Lake Beach | 10 | 12 | 14 | 14 | 15 | 17 | 20 | 20 | 20 | 16 | 13 | 11 |
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
Round Lake Beach vs another city
- Round Lake Beach vs Lake Villa, IL
- Round Lake Beach vs Round Lake Park, IL
- Round Lake Beach vs Round Lake, IL
- Round Lake Beach vs Lindenhurst, IL
- Round Lake Beach vs Grayslake, IL
- Round Lake Beach vs Grandwood Park, IL
- Round Lake Beach vs New York, NY
- Round Lake Beach vs Los Angeles, CA
- Round Lake Beach vs Chicago, IL
- Round Lake Beach vs Houston, TX
- Round Lake Beach 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).