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Ontario, OR vs Phoenix, AZ weather comparison

Ontario

OR

Ontario picks up around 14 more inches of snow each winter.

Phoenix has around 127 fewer freezing nights a year. Phoenix endures about 102 more days above 90 °F each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Ontario, OR and Phoenix, AZ
OntarioMetricPhoenix
234 daysSunny daysclear or partly cloudy skies307 days
11 inPrecipitationper year7 in
65 daysWet daysrain or snow per year33 days
14 inSnowfallper year0 in
61 daysHot daysabove 90 °F163 days
129 daysFreezing nightsat or below 32 °F2 days
51%Humidityaverage relative35%
53 °FAverage temperatureyear round74 °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.

OntarioPhoenix

Daily highs

406080100JanMarMayJulSepNovOntario, Jan: 37 °FOntario, Feb: 45 °FOntario, Mar: 57 °FOntario, Apr: 64 °FOntario, May: 75 °FOntario, Jun: 83 °FOntario, Jul: 94 °FOntario, Aug: 92 °FOntario, Sep: 82 °FOntario, Oct: 65 °FOntario, Nov: 48 °FOntario, Dec: 37 °FPhoenix, Jan: 66 °FPhoenix, Feb: 69 °FPhoenix, Mar: 76 °FPhoenix, Apr: 83 °FPhoenix, May: 92 °FPhoenix, Jun: 102 °FPhoenix, Jul: 105 °FPhoenix, Aug: 103 °FPhoenix, Sep: 98 °FPhoenix, Oct: 87 °FPhoenix, Nov: 75 °FPhoenix, Dec: 65 °F

Daily lows

20406080JanMarMayJulSepNovOntario, Jan: 23 °FOntario, Feb: 27 °FOntario, Mar: 33 °FOntario, Apr: 38 °FOntario, May: 47 °FOntario, Jun: 54 °FOntario, Jul: 61 °FOntario, Aug: 58 °FOntario, Sep: 48 °FOntario, Oct: 37 °FOntario, Nov: 28 °FOntario, Dec: 23 °FPhoenix, Jan: 44 °FPhoenix, Feb: 47 °FPhoenix, Mar: 52 °FPhoenix, Apr: 58 °FPhoenix, May: 67 °FPhoenix, Jun: 75 °FPhoenix, Jul: 82 °FPhoenix, Aug: 82 °FPhoenix, Sep: 76 °FPhoenix, Oct: 64 °FPhoenix, Nov: 51 °FPhoenix, Dec: 43 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Ontario high374557647583949282654837
Phoenix high666976839210210510398877565
Ontario low232733384754615848372823
Phoenix low444752586775828276645143

Monthly precipitation

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

OntarioPhoenix
0.00.51.01.5JanMarMayJulSepNovOntario, Jan: 1.6 inOntario, Feb: 1.1 inOntario, Mar: 1.2 inOntario, Apr: 0.9 inOntario, May: 1.0 inOntario, Jun: 0.5 inOntario, Jul: 0.1 inOntario, Aug: 0.1 inOntario, Sep: 0.3 inOntario, Oct: 0.7 inOntario, Nov: 1.1 inOntario, Dec: 1.8 inPhoenix, Jan: 0.9 inPhoenix, Feb: 1.1 inPhoenix, Mar: 0.8 inPhoenix, Apr: 0.2 inPhoenix, May: 0.1 inPhoenix, Jun: 0.1 inPhoenix, Jul: 0.6 inPhoenix, Aug: 0.9 inPhoenix, Sep: 0.7 inPhoenix, Oct: 0.6 inPhoenix, Nov: 0.5 inPhoenix, Dec: 0.8 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Ontario1.61.11.20.91.00.50.10.10.30.71.11.8
Phoenix0.91.10.80.20.10.10.60.90.70.60.50.8

Monthly sunny days

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

OntarioPhoenix
0102030JanMarMayJulSepNovOntario, Jan: 12 daysOntario, Feb: 13 daysOntario, Mar: 15 daysOntario, Apr: 17 daysOntario, May: 20 daysOntario, Jun: 23 daysOntario, Jul: 29 daysOntario, Aug: 29 daysOntario, Sep: 26 daysOntario, Oct: 22 daysOntario, Nov: 15 daysOntario, Dec: 13 daysPhoenix, Jan: 23 daysPhoenix, Feb: 21 daysPhoenix, Mar: 25 daysPhoenix, Apr: 27 daysPhoenix, May: 29 daysPhoenix, Jun: 29 daysPhoenix, Jul: 24 daysPhoenix, Aug: 26 daysPhoenix, Sep: 28 daysPhoenix, Oct: 28 daysPhoenix, Nov: 25 daysPhoenix, Dec: 24 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Ontario121315172023292926221513
Phoenix232125272929242628282524

Keep comparing

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

Ontario vs another city

See the full Ontario, OR climate profile

More Oregon cities

Phoenix vs another city

See the full Phoenix, AZ climate profile

More Arizona 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).