December 2015 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 December 2015. It features all historical weather data series we have available, including the San Francisco temperature history for December 2015. You can drill down from year to month and even day level reports by clicking on the graphs.

San Francisco Temperature History December 2015

Temperature history in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313135°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°FNovJan
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 December 2015 in San Francisco

Hourly Temperature in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanvery coldcoldcool
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 December 2015 in San Francisco

Cloud Cover in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 December 2015 in San Francisco

Daily Precipitation in December 2015 in San Francisco1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inNovJan
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in December 2015 in San Francisco

Observed Weather in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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.
DayObservationsPrecipitationCodes
Thu, Dec 3 Rain, Light Rain, Haze, Mist0.19 inRA, -RA, HZ, BR
Sun, Dec 6 Light Rain0.01 in-RA
Mon, Dec 7 MistBR
Tue, Dec 8 Fog, MistFG, BR
Wed, Dec 9 Light Rain0.00 in-RA
Thu, Dec 10 Heavy Rain, Rain, Light Rain, Mist0.46 in+RA, RA, -RA, BR
Fri, Dec 11 Thunderstorm, Thunderstorm with Heavy Rain, Light Rain, Squall0.12 inTS, +TSRA, -RA, SQ
Sun, Dec 13 Heavy Rain, Rain, Light Rain, Mist0.76 in+RA, RA, -RA, BR
Fri, Dec 18 Rain, Light Rain, Mist0.18 inRA, -RA, BR
Sun, Dec 20 Rain, Light Rain, Mist0.23 inRA, -RA, BR
Mon, Dec 21 Heavy Rain, Rain, Light Rain, Mist0.86 in+RA, RA, -RA, BR
Tue, Dec 22 Light Rain, Fog, Mist0.10 in-RA, FG, BR
Thu, Dec 24 Rain, Light Rain0.13 inRA, -RA
Sun, Dec 27 Light Rain0.00 in-RA
Mon, Dec 28 Heavy Rain, Light Rain, Mist0.11 in+RA, -RA, BR
Wed, Dec 30 Light Rain, Mist0.01 in-RA, BR

Hours of Daylight and Twilight in December 2015 in San Francisco

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 in December 2015 in San Francisco

The solar day over the course of December 2015. 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.

Solar Elevation and Azimuth in December 2015 in San Francisco

Solar Elevation and Azimuth in December 2015 in San FranciscoDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan0010102020001010202030
northeastsouthwest
Solar elevation and azimuth over the course of December 2015. 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 December 2015 in San Francisco

Moon Rise, Set & Phases in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 252:45 PMNov 252:45 PMDec 112:30 AMDec 112:30 AMDec 253:12 AMDec 253:12 AM5:12 PM5:12 PM7:36 AM7:36 AM7:13 AM7:13 AM5:36 PM5:36 PM4:45 PM4:45 PM7:17 AM7:17 AM
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.
Dec 2015IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
67%-11:39 AMWNW10:54 PMENE4:50 AMS245,136 mi
2
50%-12:13 PMW11:50 PME5:35 AMS247,897 mi
3
47%-12:44 PMW-6:19 AMS249,931 mi
4
38%12:45 AME1:15 PMW-7:01 AMS251,149 mi
5
29%1:40 AME1:45 PMW-7:43 AMS251,531 mi
6
20%2:34 AME2:16 PMW-8:26 AMS251,124 mi
7
13%3:29 AMESE2:48 PMWSW-9:09 AMS250,030 mi
8
7%4:25 AMESE3:24 PMWSW-9:55 AMS248,390 mi
9
3%5:21 AMESE4:03 PMWSW-10:42 AMS246,368 mi
10
0%6:17 AMESE4:47 PMWSW-11:32 AMS244,131 mi
11
0%7:13 AMESE5:36 PMWSW-12:24 PMS241,833 mi
12
2%8:06 AMESE6:30 PMWSW-1:18 PMS239,598 mi
13
7%8:56 AMESE7:28 PMWSW-2:12 PMS237,508 mi
14
13%9:43 AMESE8:30 PMWSW-3:06 PMS235,606 mi
15
22%10:26 AMESE9:33 PMWSW-3:59 PMS233,902 mi
16
32%11:06 AMESE10:38 PMW-4:51 PMS232,394 mi
17
44%11:43 AME11:44 PMW-5:43 PMS231,093 mi
18
50%12:20 PME--6:34 PMS230,032 mi
19
67%-12:50 AMW12:57 PME7:25 PMS229,280 mi
20
78%-1:57 AMW1:36 PME8:18 PMS228,937 mi
21
87%-3:05 AMWNW2:17 PMENE9:12 PMS229,116 mi
22
94%-4:12 AMWNW3:02 PMENE10:08 PMS229,913 mi
23
98%-5:17 AMWNW3:51 PMENE11:05 PMS231,378 mi
24
100%-6:20 AMWNW4:45 PMENE--
25
100%-7:17 AMWNW5:42 PMENE12:01 AMS233,487 mi
26
99%-8:09 AMWNW6:41 PMENE12:57 AMS236,130 mi
27
96%-8:55 AMWNW7:41 PMENE1:50 AMS239,119 mi
28
90%-9:35 AMWNW8:40 PMENE2:40 AMS242,214 mi
29
83%-10:11 AMWNW9:38 PME3:28 AMS245,160 mi
30
75%-10:44 AMW10:34 PME4:13 AMS247,711 mi
31
66%-11:16 AMW11:29 PME4:56 AMS249,661 mi

Humidity Comfort Levels in December 2015 in San Francisco

Humidity Comfort Levels in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 December 2015 in San Francisco

Wind Speed in December 2015 in San Francisco1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mphNovJan
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in December 2015 in San Francisco

Hourly Wind Speed in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 2015 in San Francisco

Hourly Wind Direction in 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in December 2015 in San Francisco

Atmospheric Pressure in December 2015 in San Francisco18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHgNovJan
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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