Skip to content
VSWeather

Diamond Bar, CA vs Philadelphia, PA weather comparison

Diamond Bar

CA

Philadelphia picks up around 18 more inches of snow each winter.

Diamond Bar has around 72 fewer freezing nights a year. Diamond Bar sees rain or snow on roughly 82 fewer days each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Diamond Bar, CA and Philadelphia, PA
Diamond BarMetricPhiladelphia
290 daysSunny daysclear or partly cloudy skies203 days
16 inPrecipitationper year43 in
38 daysWet daysrain or snow per year120 days
0 inSnowfallper year18 in
70 daysHot daysabove 90 °F36 days
3 daysFreezing nightsat or below 32 °F76 days
63%Humidityaverage relative68%
66 °FAverage temperatureyear round57 °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.

Diamond BarPhiladelphia

Daily highs

406080JanMarMayJulSepNovDiamond Bar, Jan: 69 °FDiamond Bar, Feb: 69 °FDiamond Bar, Mar: 73 °FDiamond Bar, Apr: 76 °FDiamond Bar, May: 79 °FDiamond Bar, Jun: 84 °FDiamond Bar, Jul: 90 °FDiamond Bar, Aug: 92 °FDiamond Bar, Sep: 89 °FDiamond Bar, Oct: 82 °FDiamond Bar, Nov: 75 °FDiamond Bar, Dec: 68 °FPhiladelphia, Jan: 41 °FPhiladelphia, Feb: 44 °FPhiladelphia, Mar: 53 °FPhiladelphia, Apr: 65 °FPhiladelphia, May: 75 °FPhiladelphia, Jun: 84 °FPhiladelphia, Jul: 89 °FPhiladelphia, Aug: 86 °FPhiladelphia, Sep: 80 °FPhiladelphia, Oct: 67 °FPhiladelphia, Nov: 56 °FPhiladelphia, Dec: 46 °F

Daily lows

4060JanMarMayJulSepNovDiamond Bar, Jan: 44 °FDiamond Bar, Feb: 45 °FDiamond Bar, Mar: 48 °FDiamond Bar, Apr: 51 °FDiamond Bar, May: 55 °FDiamond Bar, Jun: 58 °FDiamond Bar, Jul: 63 °FDiamond Bar, Aug: 64 °FDiamond Bar, Sep: 61 °FDiamond Bar, Oct: 55 °FDiamond Bar, Nov: 48 °FDiamond Bar, Dec: 43 °FPhiladelphia, Jan: 27 °FPhiladelphia, Feb: 29 °FPhiladelphia, Mar: 35 °FPhiladelphia, Apr: 45 °FPhiladelphia, May: 55 °FPhiladelphia, Jun: 65 °FPhiladelphia, Jul: 70 °FPhiladelphia, Aug: 68 °FPhiladelphia, Sep: 61 °FPhiladelphia, Oct: 50 °FPhiladelphia, Nov: 40 °FPhiladelphia, Dec: 32 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Diamond Bar high696973767984909289827568
Philadelphia high414453657584898680675646
Diamond Bar low444548515558636461554843
Philadelphia low272935455565706861504032

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Diamond BarPhiladelphia
0.02.04.0JanMarMayJulSepNovDiamond Bar, Jan: 3.6 inDiamond Bar, Feb: 4.0 inDiamond Bar, Mar: 2.4 inDiamond Bar, Apr: 1.0 inDiamond Bar, May: 0.4 inDiamond Bar, Jun: 0.1 inDiamond Bar, Jul: 0.1 inDiamond Bar, Aug: 0.0 inDiamond Bar, Sep: 0.2 inDiamond Bar, Oct: 0.7 inDiamond Bar, Nov: 1.0 inDiamond Bar, Dec: 2.4 inPhiladelphia, Jan: 3.2 inPhiladelphia, Feb: 3.0 inPhiladelphia, Mar: 4.1 inPhiladelphia, Apr: 3.6 inPhiladelphia, May: 3.5 inPhiladelphia, Jun: 3.8 inPhiladelphia, Jul: 3.9 inPhiladelphia, Aug: 3.7 inPhiladelphia, Sep: 4.1 inPhiladelphia, Oct: 3.6 inPhiladelphia, Nov: 2.9 inPhiladelphia, Dec: 4.0 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Diamond Bar3.64.02.41.00.40.10.10.00.20.71.02.4
Philadelphia3.23.04.13.63.53.83.93.74.13.62.94.0

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Diamond BarPhiladelphia
0102030JanMarMayJulSepNovDiamond Bar, Jan: 19 daysDiamond Bar, Feb: 17 daysDiamond Bar, Mar: 20 daysDiamond Bar, Apr: 23 daysDiamond Bar, May: 25 daysDiamond Bar, Jun: 28 daysDiamond Bar, Jul: 29 daysDiamond Bar, Aug: 30 daysDiamond Bar, Sep: 29 daysDiamond Bar, Oct: 27 daysDiamond Bar, Nov: 24 daysDiamond Bar, Dec: 21 daysPhiladelphia, Jan: 16 daysPhiladelphia, Feb: 16 daysPhiladelphia, Mar: 16 daysPhiladelphia, Apr: 15 daysPhiladelphia, May: 16 daysPhiladelphia, Jun: 16 daysPhiladelphia, Jul: 18 daysPhiladelphia, Aug: 19 daysPhiladelphia, Sep: 18 daysPhiladelphia, Oct: 19 daysPhiladelphia, Nov: 17 daysPhiladelphia, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Diamond Bar191720232528293029272421
Philadelphia161616151616181918191716

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Diamond Bar vs another city

See the full Diamond Bar, CA climate profile

More California cities

Philadelphia vs another city

See the full Philadelphia, PA climate profile

More Pennsylvania cities

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).