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December 2009 Weather History at RAF Lyneham United Kingdom

This report shows the past weather for RAF Lyneham, providing a weather history for December 2009. It features all historical weather data series we have available, including the RAF Lyneham temperature history for December 2009. You can drill down from year to month and even day level reports by clicking on the graphs.

RAF Lyneham Temperature History December 2009

History:20112010JFMAMJJASONDec20082007
Temperature history in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313115°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Hourly Temperature in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanfreezingvery coldcold
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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Cloud Cover in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Observed Weather in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 Rain, Recent Rain, Light Rain, Light Rain and Drizzle, Shallow FogRA, RERA, -RA, -RADZ, MIFG
Wed, Dec 2 Rain and Drizzle, Showers of Light Rain, Mist, Shallow FogRADZ, -SHRA, BR, MIFG
Thu, Dec 3 Showers of Light Rain, Fog, Mist-SHRA, FG, BR
Fri, Dec 4 Light Rain, Light Drizzle, Mist-RA, -DZ, BR
Sat, Dec 5 Rain, Recent Rain, Light Rain, Showers of Light RainRA, RERA, -RA, -SHRA
Sun, Dec 6 Rain, Rain and Drizzle, Recent Rain, Light RainRA, RADZ, RERA, -RA
Mon, Dec 7 Rain, Recent Rain, Light Rain, Light Rain and DrizzleRA, RERA, -RA, -RADZ
Tue, Dec 8 Light Rain, Light Rain and Drizzle, Drizzle, Light Drizzle, Recent Drizzle-RA, -RADZ, DZ, -DZ, REDZ
Wed, Dec 9 Light Rain, Fog, Mist, Shallow Fog-RA, FG, BR, MIFG
Thu, Dec 10 Mist, Shallow FogBR, MIFG
Fri, Dec 11 Fog, Freezing Fog, Mist, Patches of FogFG, FZFG, BR, BCFG
Sat, Dec 12 MistBR
Sun, Dec 13 Light Rain, Light Drizzle-RA, -DZ
Mon, Dec 14 Light Rain, Light Rain and Drizzle, Light Drizzle, Mist-RA, -RADZ, -DZ, BR
Tue, Dec 15 Light Rain and Snow, Rain and Drizzle, Light Rain, Light Rain and Drizzle, Light Drizzle, Mist-RASN, RADZ, -RA, -RADZ, -DZ, BR
Wed, Dec 16 Light Drizzle and Snow, Light Rain, Drizzle, Light Drizzle, Haze, Fog, Mist-DZSN, -RA, DZ, -DZ, HZ, FG, BR
Thu, Dec 17 Light Snow, Showers of Light Snow, Mist-SN, -SHSN, BR
Fri, Dec 18 Light Snow-SN
Sat, Dec 19 Light Snow, Light Rain and Snow, Rain and Snow, Mist-SN, -RASN, RASN, BR
Sun, Dec 20 Light Snow, Light Rain and Snow-SN, -RASN
Mon, Dec 21 Snow, Light Snow, Showers of Light Snow, Light Rain and Snow, Fog in the Vicinity, Freezing Fog, MistSN, -SN, -SHSN, -RASN, VCFG, FZFG, BR
Tue, Dec 22 Freezing Fog, Mist, Shallow FogFZFG, BR, MIFG
Wed, Dec 23 Light Rain and Snow, Rain, Light Rain, Showers of Light Rain, Fog in the Vicinity, Freezing Fog, Mist, Patches of Fog, Shallow Fog-RASN, RA, -RA, -SHRA, VCFG, FZFG, BR, BCFG, MIFG
Thu, Dec 24 Recent Rain, Light Rain, Fog, MistRERA, -RA, FG, BR
Fri, Dec 25 Fog, MistFG, BR
Sat, Dec 26 Light Rain, Showers of Light Rain-RA, -SHRA
Mon, Dec 28 Mist, Shallow FogBR, MIFG
Tue, Dec 29 Light Rain and Snow, Rain and Snow, Rain, Rain and Drizzle, Recent Rain, Light Rain, Light Rain and Drizzle, Light Drizzle, Mist-RASN, RASN, RA, RADZ, RERA, -RA, -RADZ, -DZ, BR
Wed, Dec 30 Rain, Recent Rain, Light Rain, Light Rain and Drizzle, Light DrizzleRA, RERA, -RA, -RADZ, -DZ
Thu, Dec 31 Light Rain, Light Drizzle-RA, -DZ

Hours of Daylight and Twilight in December 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Hours of Daylight and Twilight in December 2009 at RAF Lyneham1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 217 hr, 50 minDec 217 hr, 50 minnightnightdaydayDec 18 hr, 11 minDec 18 hr, 11 minDec 317 hr, 55 minDec 317 hr, 55 minDec 117 hr, 55 minDec 117 hr, 55 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Sunrise & Sunset with Twilight in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan7:51 AM7:51 AMDec 14:02 PMDec 14:02 PM8:13 AM8:13 AMDec 314:08 PMDec 314:08 PM8:04 AM8:04 AMDec 123:58 PMDec 123:58 PM8:11 AM8:11 AMDec 214:00 PMDec 214:00 PM
The solar day over the course of December 2009. 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Solar Elevation and Azimuth in December 2009 at RAF LynehamDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan001010001010
northeastsouthwest
Solar elevation and azimuth over the course of December 2009. 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Moon Rise, Set & Phases in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanDec 27:31 AMDec 27:31 AMDec 1612:03 PMDec 1612:03 PMDec 317:13 PMDec 317:13 PM2:57 PM2:57 PM8:24 AM8:24 AM8:24 AM8:24 AM3:42 PM3:42 PM3:43 PM3:43 PM8:50 AM8:50 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 2009IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
100%-7:07 AMNW2:57 PMNE11:36 PMS228,905 mi
2
100%-8:24 AMNW3:47 PMNE--
3
99%-9:29 AMNW4:53 PMNE12:38 AMS226,962 mi
4
96%-10:18 AMNW6:14 PMNE1:40 AMS225,978 mi
5
90%-10:55 AMNW7:41 PMENE2:41 AMS225,969 mi
6
81%-11:21 AMWNW9:08 PMENE3:38 AMS226,832 mi
7
70%-11:42 AMWNW10:33 PMENE4:31 AMS228,382 mi
8
59%-11:59 AMW11:55 PME5:20 AMS230,406 mi
9
50%-12:15 PMW-6:08 AMS232,703 mi
10
36%1:15 AME12:31 PMWSW-6:55 AMS235,110 mi
11
26%2:33 AMESE12:49 PMWSW-7:42 AMS237,514 mi
12
17%3:52 AMESE1:09 PMWSW-8:31 AMS239,854 mi
13
10%5:09 AMSE1:34 PMSW-9:22 AMS242,097 mi
14
4%6:22 AMSE2:07 PMSW-10:15 AMS244,231 mi
15
1%7:28 AMSE2:49 PMSW-11:09 AMS246,235 mi
16
0%8:24 AMSE3:42 PMSW-12:03 PMS248,072 mi
17
1%9:08 AMSE4:44 PMSW-12:56 PMS249,676 mi
18
4%9:42 AMSE5:52 PMSW-1:47 PMS250,958 mi
19
9%10:07 AMESE7:01 PMWSW-2:34 PMS251,807 mi
20
15%10:27 AMESE8:11 PMWSW-3:18 PMS252,108 mi
21
22%10:43 AMESE9:19 PMWSW-4:00 PMS251,754 mi
22
31%10:57 AME10:28 PMW-4:41 PMS250,664 mi
23
40%11:11 AME11:36 PMW-5:21 PMS248,800 mi
24
50%11:24 AME--6:02 PMS246,181 mi
25
60%-12:47 AMWNW11:39 AMENE6:45 PMS242,896 mi
26
71%-2:00 AMWNW11:56 AMENE7:31 PMS239,116 mi
27
80%-3:17 AMWNW12:18 PMENE8:21 PMS235,088 mi
28
88%-4:37 AMNW12:48 PMNE9:16 PMS231,134 mi
29
95%-5:56 AMNW1:29 PMNE10:16 PMS227,621 mi
30
99%-7:08 AMNW2:28 PMNE11:19 PMS224,909 mi
31
100%-8:06 AMNW3:43 PMNE--

Humidity Comfort Levels in December 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Humidity Comfort Levels in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Wind Speed in December 2009 at RAF Lyneham1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Hourly Wind Speed in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Hourly Wind Direction in 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 2009 at RAF Lyneham

History:20112010JFMAMJJASONDec20082007
Atmospheric Pressure in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.0 inHg29.0 inHg29.5 inHg29.5 inHg30.0 inHg30.0 inHg30.5 inHg30.5 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 RAF Lyneham19401950196019701980199020002010202019731973197419741975197519761976197719771978197819791979198019801981198119821982198319831984198419851985198619861987198719881988198919891990199019911991199219921993199319941994199519951996199619971997199819981999199920002000200120012002200220032003200420042005200520062006200720072008200820092009201020102011201120122012201320132014201420152015201620162017201720182018201920192020202020212021202220222023202320242024
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in December 2009 at RAF Lyneham Winter 2009

Number of Reports by Day in December 2009 at RAF Lyneham181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131002020404060608080100100NovJan
regularspecialcorrection
The number of reports per day.

Reports by Hour in December 2009 at RAF Lyneham Winter 2009

Reports by Hour in December 2009 at RAF Lyneham18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 RAF Lyneham in December 2009.

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.

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We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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