December 2020 Weather History in Mountain City Tennessee, United States

The data for this report comes from the Tri-Cities Regional TN/VA Airport. See all nearby weather stations

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

Mountain City Temperature History December 2020

Temperature history in December 2020 in Mountain City1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°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 in Mountain City

Hourly Temperature in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanvery coldcoldcoolfreezingfrigid
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 in Mountain City

Cloud Cover in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 in Mountain City

Daily Precipitation in December 2020 in Mountain City1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inNovJan
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in December 2020 in Mountain City

Snow Depth in December 2020 in Mountain City1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inNovJan
The daily measured snow depth, where available.

Observed Weather in December 2020 in Mountain City

Observed Weather in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 Light Snow, Mist0.03 in-SN, BR
Fri, Dec 4 Rain, Light Rain, Mist0.56 inRA, -RA, BR
Sat, Dec 5 Light Rain, Mist0.00 in-RA, BR
Sun, Dec 6 Light Snow, Fog, Freezing Fog, Mist0.00 in-SN, FG, FZFG, BR
Mon, Dec 7 Light Snow, Rain, Light Rain, Mist0.15 in-SN, RA, -RA, BR
Wed, Dec 9 MistBR
Thu, Dec 10 Freezing Fog, MistFZFG, BR
Fri, Dec 11 MistBR
Sat, Dec 12 Light Rain, Light Drizzle, Mist0.04 in-RA, -DZ, BR
Sun, Dec 13 Fog, MistFG, BR
Mon, Dec 14 Rain, Light Rain, Mist0.98 inRA, -RA, BR
Wed, Dec 16 Rain, Light Rain, Mist0.28 inRA, -RA, BR
Thu, Dec 17 Light Snow0.00 in-SN
Mon, Dec 21 Light Rain, Mist0.05 in-RA, BR
Wed, Dec 23 Light Rain0.00 in-RA
Thu, Dec 24 Snow, Light Snow, Heavy Rain, Rain, Light Rain, Freezing Fog, Mist1.23 inSN, -SN, +RA, RA, -RA, FZFG, BR
Fri, Dec 25 Snow, Light Snow, Haze, Freezing Fog, Mist0.02 inSN, -SN, HZ, FZFG, BR
Mon, Dec 28 Light Rain, Mist0.00 in-RA, BR
Tue, Dec 29 Freezing Fog, MistFZFG, BR
Thu, Dec 31 Light Rain, Fog, Mist0.06 in-RA, FG, BR

Hours of Daylight and Twilight in December 2020 in Mountain City

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 in Mountain City

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 in Mountain City

Solar Elevation and Azimuth in December 2020 in Mountain CityDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan0010102020303000101020203030
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 in Mountain City

Moon Rise, Set & Phases in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 304:30 AMNov 304:30 AMDec 1411:17 AMDec 1411:17 AMDec 2910:29 PMDec 2910:29 PM4:55 PM4:55 PM7:28 AM7:28 AM7:26 AM7:26 AM5:20 PM5:20 PM4:58 PM4:58 PM8:11 AM8:11 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
99%-8:27 AMWNW6:15 PMENE12:57 AMS248,354 mi
2
97%-9:24 AMWNW7:04 PMENE1:48 AMS246,582 mi
3
92%-10:16 AMWNW8:00 PMENE2:41 AMS244,579 mi
4
85%-11:04 AMWNW9:01 PMENE3:34 AMS242,358 mi
5
77%-11:47 AMWNW10:05 PMENE4:27 AMS239,930 mi
6
67%-12:24 PMWNW11:11 PMENE5:18 AMS237,323 mi
7
50%-12:58 PMWNW-6:07 AMS234,598 mi
8
45%12:18 AMENE1:30 PMW-6:56 AMS231,866 mi
9
33%1:25 AME2:00 PMW-7:45 AMS229,296 mi
10
22%2:34 AME2:32 PMW-8:34 AMS227,105 mi
11
13%3:45 AMESE3:06 PMWSW-9:26 AMS225,536 mi
12
6%4:58 AMESE3:44 PMWSW-10:21 AMS224,822 mi
13
1%6:13 AMESE4:28 PMWSW-11:20 AMS225,129 mi
14
0%7:26 AMESE5:20 PMWSW-12:23 PMS226,519 mi
15
2%8:34 AMESE6:18 PMWSW-1:26 PMS228,911 mi
16
6%9:35 AMESE7:22 PMWSW-2:29 PMS232,091 mi
17
13%10:25 AMESE8:28 PMWSW-3:27 PMS235,754 mi
18
21%11:08 AMESE9:33 PMWSW-4:20 PMS239,556 mi
19
30%11:43 AMESE10:36 PMWSW-5:09 PMS243,175 mi
20
40%12:13 PMESE11:36 PMW-5:54 PMS246,341 mi
21
50%12:40 PME--6:36 PMS248,854 mi
22
60%-12:33 AMW1:06 PME7:16 PMS250,592 mi
23
69%-1:29 AMW1:31 PME7:56 PMS251,504 mi
24
78%-2:25 AMW1:56 PMENE8:37 PMS251,610 mi
25
85%-3:22 AMWNW2:24 PMENE9:19 PMS250,986 mi
26
91%-4:20 AMWNW2:54 PMENE10:03 PMS249,751 mi
27
96%-5:18 AMWNW3:29 PMENE10:51 PMS248,050 mi
28
99%-6:17 AMWNW4:10 PMENE11:42 PMS246,041 mi
29
100%-7:16 AMWNW4:58 PMENE--
30
100%-8:11 AMWNW5:53 PMENE12:34 AMS243,871 mi
31
99%-9:01 AMWNW6:53 PMENE1:28 AMS241,666 mi

Humidity Comfort Levels in December 2020 in Mountain City

Humidity Comfort Levels in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 in Mountain City

Wind Speed in December 2020 in Mountain City1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 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 2020 in Mountain City

Hourly Wind Speed in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2020 in Mountain City

Hourly Wind Direction in 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 in Mountain City

Atmospheric Pressure in December 2020 in Mountain City18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.4 inHg29.4 inHg29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 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.

The details of the data sources used for this report can be found on the Tri-Cities Regional TN/VA Airport page.

See all nearby weather stations

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