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Pomona, CA vs San Dimas, CA weather comparison

Pomona

CA

Pomona and San Dimas have remarkably similar climates.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Pomona, CA and San Dimas, CA
PomonaMetricSan Dimas
290 daysSunny daysclear or partly cloudy skies290 days
16 inPrecipitationper year16 in
38 daysWet daysrain or snow per year38 days
0 inSnowfallper year0 in
72 daysHot daysabove 90 °F72 days
3 daysFreezing nightsat or below 32 °F3 days
60%Humidityaverage relative60%
65 °FAverage temperatureyear round65 °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.

PomonaSan Dimas

Daily highs

708090JanMarMayJulSepNovPomona, Jan: 68 °FPomona, Feb: 67 °FPomona, Mar: 72 °FPomona, Apr: 76 °FPomona, May: 78 °FPomona, Jun: 84 °FPomona, Jul: 91 °FPomona, Aug: 93 °FPomona, Sep: 89 °FPomona, Oct: 81 °FPomona, Nov: 74 °FPomona, Dec: 67 °FSan Dimas, Jan: 68 °FSan Dimas, Feb: 67 °FSan Dimas, Mar: 72 °FSan Dimas, Apr: 76 °FSan Dimas, May: 79 °FSan Dimas, Jun: 85 °FSan Dimas, Jul: 91 °FSan Dimas, Aug: 93 °FSan Dimas, Sep: 89 °FSan Dimas, Oct: 81 °FSan Dimas, Nov: 74 °FSan Dimas, Dec: 67 °F

Daily lows

405060JanMarMayJulSepNovPomona, Jan: 43 °FPomona, Feb: 44 °FPomona, Mar: 47 °FPomona, Apr: 50 °FPomona, May: 54 °FPomona, Jun: 57 °FPomona, Jul: 62 °FPomona, Aug: 63 °FPomona, Sep: 60 °FPomona, Oct: 54 °FPomona, Nov: 47 °FPomona, Dec: 42 °FSan Dimas, Jan: 43 °FSan Dimas, Feb: 44 °FSan Dimas, Mar: 47 °FSan Dimas, Apr: 50 °FSan Dimas, May: 54 °FSan Dimas, Jun: 57 °FSan Dimas, Jul: 62 °FSan Dimas, Aug: 63 °FSan Dimas, Sep: 61 °FSan Dimas, Oct: 54 °FSan Dimas, Nov: 47 °FSan Dimas, Dec: 42 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Pomona high686772767884919389817467
San Dimas high686772767985919389817467
Pomona low434447505457626360544742
San Dimas low434447505457626361544742

Monthly precipitation

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

PomonaSan Dimas
0.02.04.0JanMarMayJulSepNovPomona, Jan: 3.6 inPomona, Feb: 4.0 inPomona, Mar: 2.4 inPomona, Apr: 1.0 inPomona, May: 0.4 inPomona, Jun: 0.1 inPomona, Jul: 0.1 inPomona, Aug: 0.0 inPomona, Sep: 0.2 inPomona, Oct: 0.7 inPomona, Nov: 1.0 inPomona, Dec: 2.4 inSan Dimas, Jan: 3.6 inSan Dimas, Feb: 4.0 inSan Dimas, Mar: 2.4 inSan Dimas, Apr: 1.0 inSan Dimas, May: 0.4 inSan Dimas, Jun: 0.1 inSan Dimas, Jul: 0.1 inSan Dimas, Aug: 0.0 inSan Dimas, Sep: 0.2 inSan Dimas, Oct: 0.7 inSan Dimas, Nov: 1.0 inSan Dimas, Dec: 2.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Pomona3.64.02.41.00.40.10.10.00.20.71.02.4
San Dimas3.64.02.41.00.40.10.10.00.20.71.02.4

Monthly sunny days

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

PomonaSan Dimas
0102030JanMarMayJulSepNovPomona, Jan: 19 daysPomona, Feb: 17 daysPomona, Mar: 20 daysPomona, Apr: 23 daysPomona, May: 25 daysPomona, Jun: 28 daysPomona, Jul: 29 daysPomona, Aug: 30 daysPomona, Sep: 29 daysPomona, Oct: 27 daysPomona, Nov: 24 daysPomona, Dec: 21 daysSan Dimas, Jan: 19 daysSan Dimas, Feb: 17 daysSan Dimas, Mar: 20 daysSan Dimas, Apr: 23 daysSan Dimas, May: 25 daysSan Dimas, Jun: 28 daysSan Dimas, Jul: 29 daysSan Dimas, Aug: 30 daysSan Dimas, Sep: 29 daysSan Dimas, Oct: 27 daysSan Dimas, Nov: 24 daysSan Dimas, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Pomona191720232528293029272421
San Dimas191720232528293029272421

Keep comparing

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

Pomona vs another city

See the full Pomona, CA climate profile

More California cities

San Dimas vs another city

See the full San Dimas, CA climate profile

More California 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).