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San Francisco, CA vs Tucson, AZ weather comparison

San Francisco

CA

Tucson endures about 152 more days above 90 °F each year.

Tucson sees rain or snow on roughly 24 fewer days each year. Tucson enjoys about 55 more sunny days a year than San Francisco.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for San Francisco, CA and Tucson, AZ
San FranciscoMetricTucson
248 daysSunny daysclear or partly cloudy skies302 days
23 inPrecipitationper year11 in
71 daysWet daysrain or snow per year47 days
0 inSnowfallper year5 in
3 daysHot daysabove 90 °F155 days
0 daysFreezing nightsat or below 32 °F9 days
77%Humidityaverage relative37%
58 °FAverage temperatureyear round71 °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.

San FranciscoTucson

Daily highs

6080100JanMarMayJulSepNovSan Francisco, Jan: 58 °FSan Francisco, Feb: 60 °FSan Francisco, Mar: 62 °FSan Francisco, Apr: 63 °FSan Francisco, May: 64 °FSan Francisco, Jun: 66 °FSan Francisco, Jul: 66 °FSan Francisco, Aug: 68 °FSan Francisco, Sep: 70 °FSan Francisco, Oct: 70 °FSan Francisco, Nov: 64 °FSan Francisco, Dec: 58 °FTucson, Jan: 66 °FTucson, Feb: 69 °FTucson, Mar: 75 °FTucson, Apr: 83 °FTucson, May: 91 °FTucson, Jun: 101 °FTucson, Jul: 100 °FTucson, Aug: 98 °FTucson, Sep: 95 °FTucson, Oct: 86 °FTucson, Nov: 75 °FTucson, Dec: 65 °F

Daily lows

4060JanMarMayJulSepNovSan Francisco, Jan: 47 °FSan Francisco, Feb: 48 °FSan Francisco, Mar: 49 °FSan Francisco, Apr: 50 °FSan Francisco, May: 51 °FSan Francisco, Jun: 53 °FSan Francisco, Jul: 55 °FSan Francisco, Aug: 56 °FSan Francisco, Sep: 56 °FSan Francisco, Oct: 54 °FSan Francisco, Nov: 51 °FSan Francisco, Dec: 47 °FTucson, Jan: 41 °FTucson, Feb: 44 °FTucson, Mar: 49 °FTucson, Apr: 54 °FTucson, May: 63 °FTucson, Jun: 72 °FTucson, Jul: 76 °FTucson, Aug: 75 °FTucson, Sep: 70 °FTucson, Oct: 59 °FTucson, Nov: 48 °FTucson, Dec: 41 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Francisco high586062636466666870706458
Tucson high66697583911011009895867565
San Francisco low474849505153555656545147
Tucson low414449546372767570594841

Monthly precipitation

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

San FranciscoTucson
0.02.04.0JanMarMayJulSepNovSan Francisco, Jan: 4.5 inSan Francisco, Feb: 4.7 inSan Francisco, Mar: 3.5 inSan Francisco, Apr: 1.6 inSan Francisco, May: 0.8 inSan Francisco, Jun: 0.2 inSan Francisco, Jul: 0.0 inSan Francisco, Aug: 0.0 inSan Francisco, Sep: 0.1 inSan Francisco, Oct: 1.0 inSan Francisco, Nov: 2.2 inSan Francisco, Dec: 4.2 inTucson, Jan: 1.3 inTucson, Feb: 1.3 inTucson, Mar: 0.8 inTucson, Apr: 0.3 inTucson, May: 0.1 inTucson, Jun: 0.2 inTucson, Jul: 1.5 inTucson, Aug: 1.5 inTucson, Sep: 1.0 inTucson, Oct: 0.6 inTucson, Nov: 0.7 inTucson, Dec: 1.3 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Francisco4.54.73.51.60.80.20.00.00.11.02.24.2
Tucson1.31.30.80.30.10.21.51.51.00.60.71.3

Monthly sunny days

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

San FranciscoTucson
0102030JanMarMayJulSepNovSan Francisco, Jan: 14 daysSan Francisco, Feb: 13 daysSan Francisco, Mar: 16 daysSan Francisco, Apr: 19 daysSan Francisco, May: 22 daysSan Francisco, Jun: 25 daysSan Francisco, Jul: 28 daysSan Francisco, Aug: 27 daysSan Francisco, Sep: 27 daysSan Francisco, Oct: 24 daysSan Francisco, Nov: 18 daysSan Francisco, Dec: 15 daysTucson, Jan: 23 daysTucson, Feb: 21 daysTucson, Mar: 25 daysTucson, Apr: 27 daysTucson, May: 28 daysTucson, Jun: 28 daysTucson, Jul: 22 daysTucson, Aug: 24 daysTucson, Sep: 27 daysTucson, Oct: 28 daysTucson, Nov: 25 daysTucson, Dec: 24 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Francisco141316192225282727241815
Tucson232125272828222427282524

Keep comparing

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

San Francisco vs another city

See the full San Francisco, CA climate profile

More California cities

Tucson vs another city

See the full Tucson, 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).