Winter 1975 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 1975. It features all historical weather data series we have available, including the London Heathrow Airport temperature history for the winter of 1975. 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 1975

Temperature history in the Winter of 1975 at London Heathrow AirportDecJanFeb20°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 1975 at London Heathrow Airport

Hourly Temperature in the Winter of 1975 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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© Esri, et al.

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Cloud Cover in the Winter of 1975 at London Heathrow Airport

Cloud Cover in the Winter of 1975 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 1975 at London Heathrow Airport

Observed Weather in the Winter of 1975 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
Mon, Dec 1 Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Light Drizzle, Fog, Freezing FogDZRA, RA, -DZRA, -RA, -DZ, FG, FZFG
Tue, Dec 2 Rain, Light Rain, Showers of Light RainRA, -RA, -SHRA
Thu, Dec 4 Light Drizzle-DZ
Fri, Dec 5 Drizzle, Light DrizzleDZ, -DZ
Sat, Dec 6 DrizzleDZ
Sun, Dec 7 Drizzle, MistDZ, BR
Mon, Dec 8 DrizzleDZ
Tue, Dec 9 Drizzle, Fog, Freezing Fog, MistDZ, FG, FZFG, BR
Wed, Dec 10 DrizzleDZ
Thu, Dec 11 Light Rain, Drizzle, Light Drizzle, Mist-RA, DZ, -DZ, BR
Fri, Dec 12 Light Rain, Fog, Mist-RA, FG, BR
Sat, Dec 13 Light Rain-RA
Sun, Dec 14 Fog, SmokeFG, FU
Mon, Dec 15 Fog, Freezing Fog, Patches of FogFG, FZFG, BCFG
Tue, Dec 16 Fog, Fog in the Vicinity, Freezing Fog, Patches of FogFG, VCFG, FZFG, BCFG
Wed, Dec 17 Light Rain, Showers of Light Rain, Light Drizzle, Fog-RA, -SHRA, -DZ, FG
Thu, Dec 18 Light Drizzle and Rain, Drizzle, Light Drizzle-DZRA, DZ, -DZ
Fri, Dec 19 Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Patches of Fog-DZRA, -RA, DZ, -DZ, BCFG
Sat, Dec 20 Light Rain, Fog, Mist, Patches of Fog-RA, FG, BR, BCFG
Sun, Dec 21 Light Drizzle, Fog, Mist-DZ, FG, BR
Mon, Dec 22 Light Rain-RA
Tue, Dec 23 Light Rain-RA
Wed, Dec 24 Rain, Light RainRA, -RA
Thu, Dec 25 Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Light DrizzleDZRA, RA, -DZRA, -RA, -DZ
Mon, Dec 29 Drizzle, Fog in the Vicinity, Mist, Patches of FogDZ, VCFG, BR, BCFG
Tue, Dec 30 Light Rain-RA
Wed, Dec 31 Rain, Light Drizzle and Rain, Light RainRA, -DZRA, -RA
Thu, Jan 1 Light Drizzle and Rain, Light Rain, Light Drizzle-DZRA, -RA, -DZ
Fri, Jan 2 Rain, Light Drizzle and Rain, Light Rain, Drizzle, Light DrizzleRA, -DZRA, -RA, DZ, -DZ
Sun, Jan 4 Drizzle and Rain, Rain, Light Drizzle and Rain, Light Rain, Light DrizzleDZRA, RA, -DZRA, -RA, -DZ
Mon, Jan 5 Light Drizzle and Rain, Light Rain, Light Drizzle-DZRA, -RA, -DZ
Tue, Jan 6 Light Rain-RA
Wed, Jan 7 Light Drizzle and Rain, Light Rain-DZRA, -RA
Fri, Jan 9 Rain, Light RainRA, -RA
Sat, Jan 10 Rain, Light Drizzle and Rain, Light Rain, Light DrizzleRA, -DZRA, -RA, -DZ
Sun, Jan 11 Light Drizzle-DZ
Wed, Jan 14 Light Rain-RA
Thu, Jan 15 Drizzle, SmokeDZ, FU
Sat, Jan 17 Showers of Light Rain, Drizzle, Mist, Shallow Patches of Fog-SHRA, DZ, BR, MIBCFG
Sun, Jan 18 Light Rain, Showers of Light Rain, Mist, Shallow Patches of Fog-RA, -SHRA, BR, MIBCFG
Mon, Jan 19 Light Drizzle and Rain, Light Rain-DZRA, -RA
Tue, Jan 20 Light Drizzle and Rain, Light Rain, Light Drizzle-DZRA, -RA, -DZ
Wed, Jan 21 Light Rain-RA
Thu, Jan 22 Light Rain-RA
Fri, Jan 23 Showers of Light Rain-SHRA
Sat, Jan 24 Showers of Light Snow, Showers of Light Rain and Snow-SHSN, -SHRASN
Sun, Jan 25 Showers of Light Snow-SHSN
Mon, Jan 26 Light Snow, Light Rain and Snow, Light Drizzle and Rain-SN, -RASN, -DZRA
Tue, Jan 27 Showers of Light Rain, Light Drizzle-SHRA, -DZ
Wed, Jan 28 Drizzle, Mist, Shallow Patches of FogDZ, BR, MIBCFG
Sat, Jan 31 Light Snow, Drizzle-SN, DZ
Sun, Feb 1 Light Snow, Snow Grains-SN, SG
Mon, Feb 2 Light Snow, Snow Grains, Drizzle-SN, SG, DZ
Tue, Feb 3 Light Snow, Snow Grains, Light Freezing Drizzle and Snow, Light Freezing Drizzle, Drizzle, Light Drizzle-SN, SG, -FZDZSN, -FZDZ, DZ, -DZ
Wed, Feb 4 Light Snow, Snow Grains, Drizzle-SN, SG, DZ
Thu, Feb 5 Drizzle, Light Drizzle, MistDZ, -DZ, BR
Fri, Feb 6 DrizzleDZ
Sat, Feb 7 Drizzle, Light DrizzleDZ, -DZ
Sun, Feb 8 Rain, Light Rain, Mist, Patches of Fog, Shallow Patches of FogRA, -RA, BR, BCFG, MIBCFG
Mon, Feb 9 Light Drizzle and Rain, Light Rain, Drizzle, Light Drizzle, Patches of Fog, Shallow Patches of Fog-DZRA, -RA, DZ, -DZ, BCFG, MIBCFG
Tue, Feb 10 Showers of Rain, Light Rain, Showers of Light RainSHRA, -RA, -SHRA
Wed, Feb 11 Light Rain-RA
Thu, Feb 12 Rain, Light Drizzle and Rain, Light Rain, Light DrizzleRA, -DZRA, -RA, -DZ
Fri, Feb 13 Light Rain-RA
Sun, Feb 15 DrizzleDZ
Mon, Feb 16 Thunderstorm, Snow Grains, DrizzleTS, SG, DZ
Tue, Feb 17 Drizzle, Light Drizzle, MistDZ, -DZ, BR
Wed, Feb 18 DrizzleDZ
Thu, Feb 19 Drizzle, Patches of FogDZ, BCFG
Fri, Feb 20 Drizzle, Mist, Patches of Fog, Shallow Patches of FogDZ, BR, BCFG, MIBCFG
Sat, Feb 21 Drizzle and Rain, Light Drizzle and Rain, Light Rain, Drizzle, Fog, Mist, Shallow Patches of FogDZRA, -DZRA, -RA, DZ, FG, BR, MIBCFG
Sun, Feb 22 Light Drizzle and Rain, Light Rain, Showers of Light Rain, Light Drizzle-DZRA, -RA, -SHRA, -DZ
Mon, Feb 23 Drizzle, Light Drizzle, MistDZ, -DZ, BR
Tue, Feb 24 Rain, Light Drizzle and Rain, Light Rain, Light Drizzle, MistRA, -DZRA, -RA, -DZ, BR
Wed, Feb 25 MistBR
Fri, Feb 27 DrizzleDZ
Sat, Feb 28 Drizzle, Light Drizzle, Fog, Fog in the Vicinity, Mist, Patches of Fog, Shallow Patches of FogDZ, -DZ, FG, VCFG, BR, BCFG, MIBCFG
Sun, Feb 29 Light Drizzle and Rain, Light Rain, Drizzle, Mist, Shallow Patches of Fog-DZRA, -RA, DZ, BR, MIBCFG

Hours of Daylight and Twilight in the Winter of 1975 at London Heathrow Airport

Hours of Daylight and Twilight in the Winter of 1975 at London Heathrow AirportDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringDec 227 hr, 50 minDec 227 hr, 50 minnightnightdaydayFeb 2910 hr, 52 minFeb 2910 hr, 52 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 1975 at London Heathrow Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in the Winter of 1975 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 AMFallSpring6:49 AM6:49 AMFeb 295:40 PMFeb 295:40 PM7:58 AM7:58 AMDec 133:52 PMDec 133:52 PM8:07 AM8:07 AMDec 314:01 PMDec 314:01 PM
The solar day over the course of the Winter of 1975. 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.

Moon Rise, Set & Phases in the Winter of 1975 at London Heathrow Airport

Moon Rise, Set & Phases in the Winter of 1975 at London Heathrow AirportDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringNov 31:05 PMNov 31:05 PMNov 1810:29 PMNov 1810:29 PMDec 312:50 AMDec 312:50 AMDec 182:40 PMDec 182:40 PMJan 12:40 PMJan 12:40 PMJan 174:47 AMJan 174:47 AMJan 316:21 AMJan 316:21 AMFeb 154:44 PMFeb 154:44 PMFeb 2911:25 PMFeb 2911:25 PMMar 162:53 AMMar 162:53 AMMar 306:08 PMMar 306:08 PM6:48 AM6:48 AM7:52 AM7:52 AM4:10 PM4:10 PM4:04 PM4:04 PM7:38 AM7:38 AM7:17 AM7:17 AM5:30 PM5:30 PM7:07 AM7:07 AM5:43 PM5:43 PM5:59 AM5:59 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 1975 at London Heathrow Airport

Humidity Comfort Levels in the Winter of 1975 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 1975 at London Heathrow Airport

Wind Speed in the Winter of 1975 at London Heathrow AirportDecJanFeb0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mphFallSpring
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Winter of 1975 at London Heathrow Airport

Hourly Wind Speed in the Winter of 1975 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 1975 at London Heathrow Airport

Hourly Wind Direction in 1975 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 1975 at London Heathrow Airport

Atmospheric Pressure in the Winter of 1975 at London Heathrow AirportDecJanFeb29.0 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 1975 at London Heathrow Airport 1975

Number of Reports by Day in the Winter of 1975 at London Heathrow AirportDecJanFeb005050100100FallSpring
regularspecialcorrection
The number of reports per day.

Reports by Hour in the Winter of 1975 at London Heathrow Airport 1975

Reports by Hour in the Winter of 1975 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 1975.

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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