December 1999 Weather History in U.S. Virgin Islands U.S. Virgin Islands

The data for this report comes from the Cyril E. King Airport. See all nearby weather stations

This report shows the past weather for U.S. Virgin Islands, providing a weather history for December 1999. It features all historical weather data series we have available, including the U.S. Virgin Islands temperature history for December 1999. You can drill down from year to month and even day level reports by clicking on the graphs.

U.S. Virgin Islands Temperature History December 1999

Temperature history in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313150°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°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 1999 in U.S. Virgin Islands

Hourly Temperature in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanwarm
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 1999 in U.S. Virgin Islands

Cloud Cover in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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.

Observed Weather in December 1999 in U.S. Virgin Islands

Observed Weather in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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
Wed, Dec 1 Light RainIWC61
Thu, Dec 2 Heavy Rain, Rain, Light Rain, Mist, Sky-Obscuring FogIWC65, IWC63, IWC61, IWC10, IWC45
Fri, Dec 3 Heavy Rain, Rain, Light RainIWC65, IWC63, IWC61
Sat, Dec 4 Rain, Light Rain, Mist, Sky-Obscuring FogIWC63, IWC61, IWC10, IWC45
Sun, Dec 5 Heavy Rain, Rain, Light Rain, Mist, Sky-Obscuring FogIWC65, IWC63, IWC61, IWC10, IWC45
Mon, Dec 6 Rain, Mist, Sky-Obscuring FogIWC63, IWC10, IWC45
Tue, Dec 7 Rain, Light Rain, Mist, Sky-Obscuring FogIWC63, IWC61, IWC10, IWC45
Fri, Dec 10 Light RainIWC61
Sun, Dec 12 Light RainIWC61
Mon, Dec 13 Heavy RainIWC65
Thu, Dec 16 Rain, Light Rain, Mist, Sky-Obscuring FogIWC63, IWC61, IWC10, IWC45
Sat, Dec 18 Rain, Light RainIWC63, IWC61
Sun, Dec 19 Light Rain, Sky-Obscuring FogIWC61, IWC45
Tue, Dec 21 Rain, Light Rain, Mist, Sky-Obscuring FogIWC63, IWC61, IWC10, IWC45
Wed, Dec 22 Light Rain, Mist, Sky-Obscuring FogIWC61, IWC10, IWC45
Thu, Dec 23 Light RainIWC61
Fri, Dec 24 Heavy Rain, Light RainIWC65, IWC61
Sat, Dec 25 Heavy Rain, Light RainIWC65, IWC61
Sun, Dec 26 Rain, Light RainIWC63, IWC61
Mon, Dec 27 Light Rain, Mist, Sky-Obscuring FogIWC61, IWC10, IWC45
Tue, Dec 28 Heavy Rain, Light RainIWC65, IWC61
Fri, Dec 31 Light RainIWC61

Hours of Daylight and Twilight in December 1999 in U.S. Virgin Islands

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 1999 in U.S. Virgin Islands

The solar day over the course of December 1999. 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 1999 in U.S. Virgin Islands

Solar Elevation and Azimuth in December 1999 in U.S. Virgin IslandsDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan00101020203030404050001010202030304040
northeastsouthwest
Solar elevation and azimuth over the course of December 1999. 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 1999 in U.S. Virgin Islands

Moon Rise, Set & Phases in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanDec 76:32 PMDec 76:32 PMDec 221:32 PMDec 221:32 PMJan 62:14 PMJan 62:14 PM6:14 AM6:14 AM5:45 PM5:45 PM6:01 PM6:01 PM7:33 AM7:33 AM6:39 AM6:39 AM6:03 PM6:03 PM
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 1999IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
35%1:15 AME1:51 PMW-7:34 AMS242,443 mi
2
25%2:06 AME2:29 PMW-8:18 AMS245,329 mi
3
17%2:56 AME3:06 PMW-9:02 AMS247,726 mi
4
10%3:45 AME3:44 PMW-9:45 AMS249,623 mi
5
5%4:35 AMESE4:23 PMWSW-10:29 AMS251,039 mi
6
2%5:24 AMESE5:03 PMWSW-11:13 AMS252,002 mi
7
0%6:14 AMESE5:45 PMWSW-11:59 AMS252,537 mi
8
1%7:04 AMESE6:30 PMWSW-12:47 PMS252,651 mi
9
3%7:53 AMESE7:18 PMWSW-1:35 PMS252,330 mi
10
7%8:42 AMESE8:07 PMWSW-2:24 PMS251,542 mi
11
13%9:29 AMESE8:57 PMWSW-3:13 PMS250,240 mi
12
20%10:14 AMESE9:48 PMWSW-4:01 PMS248,386 mi
13
29%10:57 AMESE10:40 PMWSW-4:49 PMS245,957 mi
14
39%11:39 AMESE11:32 PMW-5:35 PMS242,974 mi
15
50%12:20 PME--6:22 PMS239,512 mi
16
60%-12:25 AMW1:00 PME7:09 PMS235,720 mi
17
71%-1:19 AMW1:42 PME7:58 PMS231,825 mi
18
81%-2:15 AMW2:25 PME8:49 PMS228,127 mi
19
90%-3:14 AMW3:12 PMENE9:43 PMS224,978 mi
20
96%-4:17 AMWNW4:03 PMENE10:41 PMS222,731 mi
21
99%-5:22 AMWNW5:00 PMENE11:43 PMN221,673 mi
22
100%-6:28 AMWNW6:01 PMENE--
23
100%-7:33 AMWNW7:04 PMENE12:47 AMN221,964 mi
24
97%-8:35 AMWNW8:09 PMENE1:50 AMN223,583 mi
25
91%-9:31 AMWNW9:12 PMENE2:51 AMN226,338 mi
26
83%-10:22 AMWNW10:11 PMENE3:48 AMS229,906 mi
27
73%-11:08 AMW11:08 PME4:41 AMS233,912 mi
28
62%-11:50 AMW-5:30 AMS237,989 mi
29
50%12:01 AME12:29 PMW-6:16 AMS241,832 mi
30
41%12:52 AME1:07 PMW-7:00 AMS245,215 mi
31
32%1:42 AME1:45 PMW-7:44 AMS247,994 mi

Humidity Comfort Levels in December 1999 in U.S. Virgin Islands

Humidity Comfort Levels in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 1999 in U.S. Virgin Islands

Wind Speed in December 1999 in U.S. Virgin Islands1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphNovJan
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in December 1999 in U.S. Virgin Islands

Hourly Wind Speed in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 1999 in U.S. Virgin Islands

Hourly Wind Direction in 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 1999 in U.S. Virgin Islands

Atmospheric Pressure in December 1999 in U.S. Virgin Islands18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.7 inHg29.7 inHg29.8 inHg29.8 inHg29.9 inHg29.9 inHg30.0 inHg30.0 inHg30.1 inHg30.1 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 Cyril E. King Airport page.

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