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Portland, OR vs San Francisco, CA weather comparison

Portland

OR

San Francisco sees rain or snow on roughly 86 fewer days each year.

San Francisco enjoys about 88 more sunny days a year than Portland.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Portland, OR and San Francisco, CA
PortlandMetricSan Francisco
160 daysSunny daysclear or partly cloudy skies248 days
37 inPrecipitationper year23 in
157 daysWet daysrain or snow per year71 days
6 inSnowfallper year0 in
13 daysHot daysabove 90 °F3 days
22 daysFreezing nightsat or below 32 °F0 days
76%Humidityaverage relative77%
55 °FAverage temperatureyear round58 °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.

PortlandSan Francisco

Daily highs

6080JanMarMayJulSepNovPortland, Jan: 47 °FPortland, Feb: 51 °FPortland, Mar: 56 °FPortland, Apr: 61 °FPortland, May: 68 °FPortland, Jun: 73 °FPortland, Jul: 81 °FPortland, Aug: 81 °FPortland, Sep: 75 °FPortland, Oct: 63 °FPortland, Nov: 53 °FPortland, Dec: 46 °FSan 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 °F

Daily lows

405060JanMarMayJulSepNovPortland, Jan: 37 °FPortland, Feb: 38 °FPortland, Mar: 40 °FPortland, Apr: 44 °FPortland, May: 49 °FPortland, Jun: 53 °FPortland, Jul: 58 °FPortland, Aug: 58 °FPortland, Sep: 55 °FPortland, Oct: 47 °FPortland, Nov: 41 °FPortland, Dec: 37 °FSan 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 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Portland high475156616873818175635346
San Francisco high586062636466666870706458
Portland low373840444953585855474137
San Francisco low474849505153555656545147

Monthly precipitation

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

PortlandSan Francisco
0.02.04.06.0JanMarMayJulSepNovPortland, Jan: 5.1 inPortland, Feb: 4.0 inPortland, Mar: 4.4 inPortland, Apr: 3.5 inPortland, May: 2.1 inPortland, Jun: 1.3 inPortland, Jul: 0.4 inPortland, Aug: 0.4 inPortland, Sep: 1.3 inPortland, Oct: 3.2 inPortland, Nov: 5.3 inPortland, Dec: 5.9 inSan 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 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Portland5.14.04.43.52.11.30.40.41.33.25.35.9
San Francisco4.54.73.51.60.80.20.00.00.11.02.24.2

Monthly sunny days

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

PortlandSan Francisco
01020JanMarMayJulSepNovPortland, Jan: 7 daysPortland, Feb: 8 daysPortland, Mar: 8 daysPortland, Apr: 9 daysPortland, May: 13 daysPortland, Jun: 15 daysPortland, Jul: 24 daysPortland, Aug: 25 daysPortland, Sep: 21 daysPortland, Oct: 15 daysPortland, Nov: 8 daysPortland, Dec: 7 daysSan 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 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Portland788913152425211587
San Francisco141316192225282727241815

Keep comparing

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

Portland vs another city

See the full Portland, OR climate profile

More Oregon cities

San Francisco vs another city

See the full San Francisco, 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).