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Rancho Cucamonga, CA vs Rialto, CA weather comparison

Rancho Cucamonga

CA

Rancho Cucamonga picks up around 20 more inches of snow each winter.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Rancho Cucamonga, CA and Rialto, CA
Rancho CucamongaMetricRialto
285 daysSunny daysclear or partly cloudy skies284 days
12 inPrecipitationper year10 in
35 daysWet daysrain or snow per year34 days
21 inSnowfallper year0 in
91 daysHot daysabove 90 °F103 days
3 daysFreezing nightsat or below 32 °F1 days
59%Humidityaverage relative57%
66 °FAverage temperatureyear round67 °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.

Rancho CucamongaRialto

Daily highs

708090JanMarMayJulSepNovRancho Cucamonga, Jan: 68 °FRancho Cucamonga, Feb: 68 °FRancho Cucamonga, Mar: 72 °FRancho Cucamonga, Apr: 76 °FRancho Cucamonga, May: 80 °FRancho Cucamonga, Jun: 86 °FRancho Cucamonga, Jul: 93 °FRancho Cucamonga, Aug: 95 °FRancho Cucamonga, Sep: 91 °FRancho Cucamonga, Oct: 83 °FRancho Cucamonga, Nov: 75 °FRancho Cucamonga, Dec: 67 °FRialto, Jan: 69 °FRialto, Feb: 69 °FRialto, Mar: 72 °FRialto, Apr: 76 °FRialto, May: 81 °FRialto, Jun: 88 °FRialto, Jul: 94 °FRialto, Aug: 96 °FRialto, Sep: 93 °FRialto, Oct: 83 °FRialto, Nov: 76 °FRialto, Dec: 68 °F

Daily lows

5060JanMarMayJulSepNovRancho Cucamonga, Jan: 44 °FRancho Cucamonga, Feb: 45 °FRancho Cucamonga, Mar: 48 °FRancho Cucamonga, Apr: 51 °FRancho Cucamonga, May: 55 °FRancho Cucamonga, Jun: 59 °FRancho Cucamonga, Jul: 64 °FRancho Cucamonga, Aug: 64 °FRancho Cucamonga, Sep: 63 °FRancho Cucamonga, Oct: 56 °FRancho Cucamonga, Nov: 48 °FRancho Cucamonga, Dec: 43 °FRialto, Jan: 44 °FRialto, Feb: 45 °FRialto, Mar: 47 °FRialto, Apr: 50 °FRialto, May: 55 °FRialto, Jun: 59 °FRialto, Jul: 64 °FRialto, Aug: 64 °FRialto, Sep: 62 °FRialto, Oct: 55 °FRialto, Nov: 48 °FRialto, Dec: 43 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rancho Cucamonga high686872768086939591837567
Rialto high696972768188949693837668
Rancho Cucamonga low444548515559646463564843
Rialto low444547505559646462554843

Monthly precipitation

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

Rancho CucamongaRialto
0.01.02.0JanMarMayJulSepNovRancho Cucamonga, Jan: 2.4 inRancho Cucamonga, Feb: 2.7 inRancho Cucamonga, Mar: 1.7 inRancho Cucamonga, Apr: 0.8 inRancho Cucamonga, May: 0.4 inRancho Cucamonga, Jun: 0.1 inRancho Cucamonga, Jul: 0.3 inRancho Cucamonga, Aug: 0.2 inRancho Cucamonga, Sep: 0.2 inRancho Cucamonga, Oct: 0.6 inRancho Cucamonga, Nov: 0.7 inRancho Cucamonga, Dec: 1.7 inRialto, Jan: 2.2 inRialto, Feb: 2.6 inRialto, Mar: 1.6 inRialto, Apr: 0.7 inRialto, May: 0.4 inRialto, Jun: 0.1 inRialto, Jul: 0.1 inRialto, Aug: 0.0 inRialto, Sep: 0.1 inRialto, Oct: 0.5 inRialto, Nov: 0.7 inRialto, Dec: 1.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rancho Cucamonga2.42.71.70.80.40.10.30.20.20.60.71.7
Rialto2.22.61.60.70.40.10.10.00.10.50.71.6

Monthly sunny days

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

Rancho CucamongaRialto
0102030JanMarMayJulSepNovRancho Cucamonga, Jan: 19 daysRancho Cucamonga, Feb: 16 daysRancho Cucamonga, Mar: 19 daysRancho Cucamonga, Apr: 22 daysRancho Cucamonga, May: 24 daysRancho Cucamonga, Jun: 28 daysRancho Cucamonga, Jul: 29 daysRancho Cucamonga, Aug: 30 daysRancho Cucamonga, Sep: 29 daysRancho Cucamonga, Oct: 27 daysRancho Cucamonga, Nov: 23 daysRancho Cucamonga, Dec: 21 daysRialto, Jan: 19 daysRialto, Feb: 16 daysRialto, Mar: 18 daysRialto, Apr: 21 daysRialto, May: 24 daysRialto, Jun: 27 daysRialto, Jul: 29 daysRialto, Aug: 30 daysRialto, Sep: 28 daysRialto, Oct: 26 daysRialto, Nov: 24 daysRialto, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rancho Cucamonga191619222428293029272321
Rialto191618212427293028262421

Keep comparing

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

Rancho Cucamonga vs another city

See the full Rancho Cucamonga, CA climate profile

More California cities

Rialto vs another city

See the full Rialto, 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).