Winter 1977 Weather History at London Heathrow Airport United Kingdom

This report shows the past weather for London Heathrow Airport, providing a weather history for the winter of 1977. It features all historical weather data series we have available, including the London Heathrow Airport temperature history for the winter of 1977. You can drill down from year to month and even day level reports by clicking on the graphs.

London Heathrow Airport Temperature History in the Winter of 1977

Temperature history in the Winter of 1977 at London Heathrow AirportDecJanFeb15°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FFallSpring
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 the Winter of 1977 at London Heathrow Airport

Hourly Temperature in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpringvery 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 the Winter of 1977 at London Heathrow Airport

Cloud Cover in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
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 the Winter of 1977 at London Heathrow Airport

Observed Weather in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
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 1 Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, MistDZRA, RA, -DZRA, -RA, DZ, -DZ, BR
Fri, Dec 2 DrizzleDZ
Sat, Dec 3 Drizzle, MistDZ, BR
Sun, Dec 4 Drizzle, SmokeDZ, FU
Mon, Dec 5 Light Rain, Drizzle, Light Drizzle, Mist-RA, DZ, -DZ, BR
Tue, Dec 6 Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, MistRA, -DZRA, -RA, DZ, -DZ, BR
Wed, Dec 7 Heavy Rain, Rain, Light Drizzle and Rain, Light Rain, Light Drizzle, Mist+RA, RA, -DZRA, -RA, -DZ, BR
Thu, Dec 8 Rain, Light Drizzle and Rain, Light Rain, Showers of Light RainRA, -DZRA, -RA, -SHRA
Fri, Dec 9 Light Drizzle and Rain, Showers of Light Rain, Drizzle-DZRA, -SHRA, DZ
Sat, Dec 10 Heavy Rain, Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Mist+RA, DZRA, RA, -DZRA, -RA, DZ, -DZ, BR
Sun, Dec 11 Light Rain, Showers of Light Rain-RA, -SHRA
Mon, Dec 12 Light Rain, Showers of Light Rain-RA, -SHRA
Tue, Dec 13 Light Drizzle and Rain, Light Rain, Drizzle, Mist-DZRA, -RA, DZ, BR
Wed, Dec 14 Drizzle, Fog, Fog in the Vicinity, Mist, Patches of FogDZ, FG, VCFG, BR, BCFG
Thu, Dec 15 Drizzle, Fog, Mist, Shallow Patches of Fog, SmokeDZ, FG, BR, MIBCFG, FU
Fri, Dec 16 Drizzle, Light DrizzleDZ, -DZ
Sat, Dec 17 Drizzle, Light Drizzle, MistDZ, -DZ, BR
Sun, Dec 18 Heavy Rain, Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Fog, Fog in the Vicinity, Mist+RA, RA, -DZRA, -RA, DZ, -DZ, FG, VCFG, BR
Mon, Dec 19 FogFG
Tue, Dec 20 Drizzle, Light Drizzle, Fog, MistDZ, -DZ, FG, BR
Wed, Dec 21 Rain, Light Rain, Drizzle, Light Drizzle, Mist, Patches of FogRA, -RA, DZ, -DZ, BR, BCFG
Thu, Dec 22 Light Drizzle and Rain-DZRA
Fri, Dec 23 Light Drizzle and Rain, Light Rain, Light Drizzle-DZRA, -RA, -DZ
Sat, Dec 24 Light Drizzle and Rain, Light Rain, Showers of Light Rain-DZRA, -RA, -SHRA
Mon, Dec 26 Light Rain, Drizzle, Mist-RA, DZ, BR
Tue, Dec 27 Rain, Light Rain, Showers of Light RainRA, -RA, -SHRA
Wed, Dec 28 Showers of Light Rain and Snow, Showers of Light Rain-SHRASN, -SHRA
Thu, Dec 29 Light Rain-RA
Fri, Dec 30 Light Rain, Showers of Light Rain-RA, -SHRA
Sat, Dec 31 Light Drizzle and Rain, Light Rain, Showers of Light Rain, Drizzle, Light Drizzle, Mist-DZRA, -RA, -SHRA, DZ, -DZ, BR
Mon, Jan 2 Light Rain-RA
Tue, Jan 3 Heavy Rain, Light Rain+RA, -RA
Wed, Jan 4 Rain, Light Rain, Drizzle, MistRA, -RA, DZ, BR
Thu, Jan 5 Light Rain, Drizzle, Mist-RA, DZ, BR
Sat, Jan 7 Drizzle, Fog, MistDZ, FG, BR
Sun, Jan 8 Drizzle, Fog, Mist, Patches of FogDZ, FG, BR, BCFG
Mon, Jan 9 Light Drizzle and Rain, Light Rain, Light Drizzle, Mist-DZRA, -RA, -DZ, BR
Tue, Jan 10 Light Rain-RA
Wed, Jan 11 Light Snow, Light Rain and Snow, Rain and Snow, Rain, Light Rain-SN, -RASN, RASN, RA, -RA
Thu, Jan 12 Showers of Light Snow, Showers of Light Rain and Snow-SHSN, -SHRASN
Fri, Jan 13 DrizzleDZ
Sat, Jan 14 Drizzle, Light Drizzle, MistDZ, -DZ, BR
Sun, Jan 15 Drizzle, Light DrizzleDZ, -DZ
Mon, Jan 16 Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Mist-DZRA, -RA, DZ, -DZ, BR
Tue, Jan 17 Light Snow, Light Rain and Snow, Heavy Rain, Rain, Light Rain, Drizzle, Mist, Patches of Fog-SN, -RASN, +RA, RA, -RA, DZ, BR, BCFG
Wed, Jan 18 Snow Grains, Drizzle, Fog, Freezing Fog, Mist, Patches of FogSG, DZ, FG, FZFG, BR, BCFG
Thu, Jan 19 Light Snow, Light Rain and Snow, Light Drizzle and Rain, Light Rain, Drizzle, Mist-SN, -RASN, -DZRA, -RA, DZ, BR
Fri, Jan 20 Drizzle, Mist, Patches of Fog, Shallow Patches of FogDZ, BR, BCFG, MIBCFG
Sat, Jan 21 Light Rain, Drizzle, Mist-RA, DZ, BR
Sun, Jan 22 Rain, Light RainRA, -RA
Mon, Jan 23 Rain and Snow, Rain, Light Drizzle and Rain, Light Rain, Light DrizzleRASN, RA, -DZRA, -RA, -DZ
Tue, Jan 24 Light Rain-RA
Thu, Jan 26 Light Rain and Snow, Rain and Snow, Rain, Light Rain, Mist-RASN, RASN, RA, -RA, BR
Fri, Jan 27 Rain, Light Drizzle and Rain, Light RainRA, -DZRA, -RA
Sat, Jan 28 Rain, Light Drizzle and Rain, Light Rain, Showers of Light RainRA, -DZRA, -RA, -SHRA
Sun, Jan 29 Light Rain and Snow, Light Rain-RASN, -RA
Mon, Jan 30 Showers of Light Rain and Snow, Light Rain, Showers of Light Rain, Light Drizzle-SHRASN, -RA, -SHRA, -DZ
Tue, Jan 31 Light Rain and Snow, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Fog in the Vicinity, Mist, Patches of Fog-RASN, -DZRA, -RA, DZ, -DZ, VCFG, BR, BCFG
Wed, Feb 1 Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Showers of Light Rain, Light Drizzle, FogDZRA, RA, -DZRA, -RA, -SHRA, -DZ, FG
Thu, Feb 2 Light Drizzle and Rain, Light Rain, Showers of Light Rain-DZRA, -RA, -SHRA
Fri, Feb 3 Light Rain, Drizzle, Mist-RA, DZ, BR
Sat, Feb 4 Heavy Rain, Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Mist+RA, RA, -DZRA, -RA, DZ, -DZ, BR
Sun, Feb 5 Showers of Light Rain, Mist-SHRA, BR
Mon, Feb 6 Rain, Light Drizzle and Rain, Light Rain, Light DrizzleRA, -DZRA, -RA, -DZ
Tue, Feb 7 Light Drizzle and Rain, Light Rain, Drizzle, Mist-DZRA, -RA, DZ, BR
Wed, Feb 8 Showers of Light Snow, Showers of Light Rain and Snow, Drizzle-SHSN, -SHRASN, DZ
Thu, Feb 9 Light Snow, Showers of Light Snow-SN, -SHSN
Fri, Feb 10 Light Snow, Showers of Light Snow-SN, -SHSN
Sat, Feb 11 Drizzle, MistDZ, BR
Sun, Feb 12 Snow Grains, DrizzleSG, DZ
Mon, Feb 13 Light Snow, Showers of Light Snow, Drizzle-SN, -SHSN, DZ
Tue, Feb 14 Light Snow, Snow Grains, Drizzle, Mist-SN, SG, DZ, BR
Wed, Feb 15 Drizzle, Mist, Shallow Patches of FogDZ, BR, MIBCFG
Thu, Feb 16 Light Snow, Drizzle-SN, DZ
Fri, Feb 17 Light Snow, Drizzle, Smoke-SN, DZ, FU
Sat, Feb 18 Drizzle, Shallow Patches of Fog, SmokeDZ, MIBCFG, FU
Mon, Feb 20 Light Rain, Drizzle-RA, DZ
Tue, Feb 21 Light Freezing Rain, Rain, Light Rain, Drizzle, Light Drizzle, Fog, Mist-FZRA, RA, -RA, DZ, -DZ, FG, BR
Wed, Feb 22 Light Drizzle and Rain, Light Rain, Fog, Mist-DZRA, -RA, FG, BR
Thu, Feb 23 Light Rain-RA
Fri, Feb 24 Heavy Rain, Rain, Light Rain, Showers of Light Rain+RA, RA, -RA, -SHRA
Sat, Feb 25 Rain, Light Rain, MistRA, -RA, BR
Sun, Feb 26 Heavy Rain, Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Light Drizzle+RA, DZRA, RA, -DZRA, -RA, -DZ
Mon, Feb 27 Showers of Light Rain, Light Drizzle-SHRA, -DZ
Tue, Feb 28 Rain, Light Rain, MistRA, -RA, BR

Hours of Daylight and Twilight in the Winter of 1977 at London Heathrow Airport

Hours of Daylight and Twilight in the Winter of 1977 at London Heathrow AirportDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringDec 217 hr, 50 minDec 217 hr, 50 minnightnightdaydayFeb 2810 hr, 50 minFeb 2810 hr, 50 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 and Daylight Saving Time in the Winter of 1977 at London Heathrow Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in the Winter of 1977 at London Heathrow AirportDecJanFeb12 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 AMFallSpring6:50 AM6:50 AMFeb 285:39 PMFeb 285:39 PM7:59 AM7:59 AMDec 133:52 PMDec 133:52 PM8:07 AM8:07 AMDec 314:02 PMDec 314:02 PM
The solar day over the course of the Winter of 1977. 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 the Winter of 1977 at London Heathrow Airport

Solar Elevation and Azimuth in the Winter of 1977 at London Heathrow AirportDecJanFeb12 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 AMFallSpring001001010
northeastsouthwest
Solar elevation and azimuth in the the winter of 1977. 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 the Winter of 1977 at London Heathrow Airport

Moon Rise, Set & Phases in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringNov 117:10 AMNov 117:10 AMNov 255:32 PMNov 255:32 PMDec 105:33 PMDec 105:33 PMDec 2512:49 PMDec 2512:49 PMJan 94:00 AMJan 94:00 AMJan 247:56 AMJan 247:56 AMFeb 72:54 PMFeb 72:54 PMFeb 231:27 AMFeb 231:27 AMMar 92:37 AMMar 92:37 AMMar 245:20 PMMar 245:20 PM7:05 AM7:05 AM4:49 PM4:49 PM4:19 PM4:19 PM7:54 AM7:54 AM7:06 AM7:06 AM4:14 PM4:14 PM4:29 PM4:29 PM8:13 AM8:13 AM5:13 PM5:13 PM4:14 PM4:14 PM7:26 AM7:26 AM6:59 AM6:59 AM5:18 PM5:18 PM5:11 PM5:11 PM6:54 AM6:54 AM6:30 AM6:30 AM6:41 PM6:41 PM7:21 PM7:21 PM7:14 AM7:14 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.

Humidity Comfort Levels in the Winter of 1977 at London Heathrow Airport

Humidity Comfort Levels in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
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 the Winter of 1977 at London Heathrow Airport

Wind Speed in the Winter of 1977 at London Heathrow AirportDecJanFeb0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mph70 mph70 mphFallSpring
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Winter of 1977 at London Heathrow Airport

Hourly Wind Speed in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
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 1977 at London Heathrow Airport

Hourly Wind Direction in 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in the Winter of 1977 at London Heathrow Airport

Atmospheric Pressure in the Winter of 1977 at London Heathrow AirportDecJanFeb28.5 inHg28.5 inHg29.0 inHg29.0 inHg29.5 inHg29.5 inHg30.0 inHg30.0 inHg30.5 inHg30.5 inHgFallSpring
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

Number of Reports by Day in the Winter of 1977 at London Heathrow Airport 1977

Number of Reports by Day in the Winter of 1977 at London Heathrow AirportDecJanFeb005050100100FallSpring
regularspecialcorrection
The number of reports per day.

Reports by Hour in the Winter of 1977 at London Heathrow Airport 1977

Reports by Hour in the Winter of 1977 at London Heathrow AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpring
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 London Heathrow Airport in the winter of 1977.

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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