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December 2020 Weather History at Osan Ab South Korea

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

Osan Ab Temperature History December 2020

History:20222021JFMAMJJASONDec20192018
Temperature history in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Hourly Temperature in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanfreezingvery coldcoldfrigid
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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Cloud Cover in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Daily Precipitation in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 inNovJan
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Snow Depth in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 inNovJan
The daily measured snow depth, where available.

Observed Weather in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Observed Weather in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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
Tue, Dec 1 Haze, MistHZ, BR
Wed, Dec 2 HazeHZ
Fri, Dec 4 MistBR
Sat, Dec 5 Light Snow, Light Snow Grains, Haze, Mist0.00 in-SN, -SG, HZ, BR
Sun, Dec 6 MistBR
Mon, Dec 7 Haze, MistHZ, BR
Thu, Dec 10 Light Snow, Showers of Light Snow, Light Rain and Snow, Haze, Mist0.00 in-SN, -SHSN, -RASN, HZ, BR
Fri, Dec 11 Haze, MistHZ, BR
Sat, Dec 12 Haze, MistHZ, BR
Sun, Dec 13 Light Snow, Showers of Light Snow, Light Rain, Haze, Fog, Mist0.10 in-SN, -SHSN, -RA, HZ, FG, BR
Thu, Dec 17 Light Snow, Showers of Light Snow, Mist0.00 in-SN, -SHSN, BR
Fri, Dec 18 Light Snow, Light Snow and Snow Grains, Showers of Light Snow, Light Snow Grains, Mist0.02 in-SN, -SNSG, -SHSN, -SG, BR
Mon, Dec 21 Haze, MistHZ, BR
Tue, Dec 22 Light Snow, Haze, Mist0.00 in-SN, HZ, BR
Wed, Dec 23 Haze, MistHZ, BR
Thu, Dec 24 Light Rain, Mist, Unknown Precipitation0.01 in-RA, BR, UP
Sat, Dec 26 Light Snow, Haze, Mist0.00 in-SN, HZ, BR
Sun, Dec 27 Haze, MistHZ, BR
Mon, Dec 28 Haze, MistHZ, BR
Tue, Dec 29 Light Snow, Light Rain and Snow, Haze, Fog, Freezing Fog, Mist0.00 in-SN, -RASN, HZ, FG, FZFG, BR
Wed, Dec 30 Light Snow, Showers of Light Snow0.00 in-SN, -SHSN
Thu, Dec 31 Light Snow, Mist0.00 in-SN, BR

Hours of Daylight and Twilight in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Hours of Daylight and Twilight in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 219 hr, 37 minDec 219 hr, 37 minnightnightdaydayDec 19 hr, 48 minDec 19 hr, 48 minDec 319 hr, 39 minDec 319 hr, 39 minDec 119 hr, 40 minDec 119 hr, 40 min
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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Sunrise & Sunset with Twilight in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan7:26 AM7:26 AMDec 15:14 PMDec 15:14 PM7:45 AM7:45 AMDec 315:24 PMDec 315:24 PM7:35 AM7:35 AMDec 115:15 PMDec 115:15 PM7:41 AM7:41 AMDec 215:18 PMDec 215:18 PM
The solar day over the course of December 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.

Solar Elevation and Azimuth in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Solar Elevation and Azimuth in December 2020 at Osan AbDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 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 December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Moon Rise, Set & Phases in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 306:30 PMNov 306:30 PMDec 151:17 AMDec 151:17 AMDec 3012:29 PMDec 3012:29 PM5:13 PM5:13 PM7:59 AM7:59 AM8:02 AM8:02 AM5:46 PM5:46 PM4:32 PM4:32 PM7:46 AM7:46 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 2020IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
100%-7:59 AMWNW5:52 PMENE12:33 AMS249,265 mi
2
98%-8:58 AMWNW6:37 PMENE1:23 AMS247,640 mi
3
95%-9:53 AMWNW7:30 PMENE2:15 AMS245,768 mi
4
89%-10:44 AMWNW8:28 PMENE3:08 AMS243,672 mi
5
82%-11:29 AMWNW9:31 PMENE4:01 AMS241,362 mi
6
73%-12:09 PMWNW10:36 PMENE4:53 AMS238,854 mi
7
63%-12:44 PMWNW11:43 PMENE5:43 AMS236,188 mi
8
50%-1:17 PMWNW-6:33 AMS233,443 mi
9
40%12:50 AME1:47 PMW-7:21 AMS230,756 mi
10
29%1:59 AME2:18 PMW-8:10 AMS228,316 mi
11
18%3:09 AME2:50 PMW-9:00 AMS226,356 mi
12
10%4:21 AMESE3:25 PMWSW-9:53 AMS225,121 mi
13
4%5:36 AMESE4:05 PMWSW-10:50 AMS224,820 mi
14
0%6:50 AMESE4:52 PMWSW-11:51 AMS225,582 mi
15
0%8:02 AMESE5:46 PMWSW-12:54 PMS227,411 mi
16
3%9:07 AMESE6:48 PMWSW-1:58 PMS230,167 mi
17
9%10:04 AMESE7:53 PMWSW-2:58 PMS233,590 mi
18
16%10:50 AMESE8:59 PMWSW-3:55 PMS237,353 mi
19
25%11:29 AMESE10:03 PMWSW-4:46 PMS241,115 mi
20
34%12:02 PMESE11:05 PMWSW-5:33 PMS244,573 mi
21
44%12:30 PME--6:16 PMS247,485 mi
22
50%-12:04 AMW12:56 PME6:57 PMS249,683 mi
23
64%-1:01 AMW1:21 PME7:38 PMS251,076 mi
24
73%-1:58 AMW1:45 PME8:18 PMS251,644 mi
25
81%-2:54 AMWNW2:11 PMENE8:59 PMS251,431 mi
26
88%-3:52 AMWNW2:40 PMENE9:42 PMS250,534 mi
27
94%-4:50 AMWNW3:12 PMENE10:28 PMS249,084 mi
28
98%-5:49 AMWNW3:49 PMENE11:17 PMS247,235 mi
29
99%-6:49 AMWNW4:32 PMENE--
30
100%-7:46 AMWNW5:23 PMENE12:08 AMS245,141 mi
31
100%-8:39 AMWNW6:20 PMENE1:02 AMS242,944 mi

Humidity Comfort Levels in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Humidity Comfort Levels in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Wind Speed in December 2020 at Osan Ab1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mphNovJan
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Hourly Wind Speed in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days in December 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Growing Degree Days in December 2020 at Osan AbDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FNovJan
The growing degree days accumulated from reported temperatures over the course of December 2020 (solid black line), placed over the average accumulation (faint line), with 25th to 75th and 10th to 90th percentile bands. Gaps indicate days without enough temperature reports to calculate a complete daily value; totals following gaps may therefore be understated.

Hourly Wind Direction in 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Hourly Wind Direction in 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2020 at Osan Ab

History:20222021JFMAMJJASONDec20192018
Atmospheric Pressure in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313130.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHg30.6 inHg30.6 inHgNovJan
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

Reports by Month

Reports by Month at Osan Ab194019501960197019801990200020102020195319531954195419551955195619561957195719581958195919591960196019611961196219621963196319641964196519651966196619671967196819681969196919701970197319731974197419751975197619761977197719781978197919791980198019811981198219821983198319841984198519851986198619871987198819881989198919901990199119911992199219931993199419941995199519961996199719971998199819991999200020002001200120022002200320032004200420052005200620062007200720082008200920092010201020112011201220122013201320142014201520152016201620172017201820182019201920202020202120212022202220232023202420242025202520262026
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in December 2020 at Osan Ab Winter 2020

Number of Reports by Day in December 2020 at Osan Ab181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131005050100100NovJan
regularspecialcorrection
The number of reports per day.

Reports by Hour in December 2020 at Osan Ab Winter 2020

Reports by Hour in December 2020 at Osan Ab18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
regularspecialcorrection
Indication of what types of reports were recorded during each hour.

This report graphically illustrates the historical weather reports recorded by the weather station at Osan Ab in December 2020.

METAR Reports

Airport weather stations throughout the world routinely issue METAR weather reports . Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. They are published via radio transmission and on the internet. We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that.

ISD Reports

The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information , consists of hourly and synoptic weather reports from a variety of sources. We use ISD data to complement and backfill for our METAR archive.

Other Data

The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

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