2020 Weather History in San Francisco California, United States

The data for this report comes from the San Francisco International Airport. See all nearby weather stations

This report shows the past weather for San Francisco, providing a weather history for 2020. It features all historical weather data series we have available, including the San Francisco temperature history for 2020. You can drill down from year to month and even day level reports by clicking on the graphs.

San Francisco Temperature History 2020

Temperature history in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°F
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in 2020 in San Francisco

Hourly Temperature in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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Cloud Cover in 2020 in San Francisco

Cloud Cover in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Daily Precipitation in 2020 in San Francisco

Daily Precipitation in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in 2020 in San Francisco

Observed Weather in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.

Hours of Daylight and Twilight in 2020 in San Francisco

Hours of Daylight and Twilight in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 47 minJun 2014 hr, 47 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 33 minDec 219 hr, 33 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

Sunrise & Sunset with Twilight and Daylight Saving Time in 2020 in San Francisco

Sunrise & Sunset with Twilight and Daylight Saving Time in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJun 125:47 AMJun 125:47 AM8:35 PMJun 278:35 PMJun 27Dec 54:50 PMDec 54:50 PM7:34 AMOct 317:34 AMOct 31Mar 8DSTMar 8DSTDSTNov 1DSTNov 1daynightnightnightnight
The solar day over the course of the year 2020. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Solar Elevation and Azimuth in 2020 in San Francisco

Solar Elevation and Azimuth in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000101010102020203030304040405050606070000101010202020203030404050506070
northeastsouthwest
Solar elevation and azimuth over the course of the year 2020. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in 2020 in San Francisco

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

Humidity Comfort Levels in 2020 in San Francisco

Humidity Comfort Levels in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in 2020 in San Francisco

Wind Speed in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in 2020 in San Francisco

Hourly Wind Speed in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2020 in San Francisco

Hourly Wind Direction in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AM
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in 2020 in San Francisco

Atmospheric Pressure in 2020 in San FranciscoJanFebMarAprMayJunJulAugSepOctNovDec29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHg30.6 inHg30.6 inHg
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the San Francisco International Airport page.

See all nearby weather stations

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