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Winter 1978 Weather History at Portland International Airport Oregon, United States

This report shows the past weather for Portland International Airport, providing a weather history for the winter of 1978. It features all historical weather data series we have available, including the Portland International Airport temperature history for the winter of 1978. You can drill down from year to month and even day level reports by clicking on the graphs.

Portland International Airport Temperature History in the Winter of 1978

History:198219811980197919781977197619751974
Temperature history in the Winter of 1978 at Portland International AirportDecJanFeb10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Hourly Temperature in the Winter of 1978 at Portland International AirportDecJanFeb12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMFallSpringcoldfreezingvery cold
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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Cloud Cover in the Winter of 1978 at Portland International 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.

Daily Precipitation in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Daily Precipitation in the Winter of 1978 at Portland International AirportDecJanFeb0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inFallSpring
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Snow Depth in the Winter of 1978 at Portland International AirportDecJanFeb0 in0 in1 in1 in2 in2 in3 in3 in4 in4 inFallSpring
The daily measured snow depth, where available.

Observed Weather in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Observed Weather in the Winter of 1978 at Portland International 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
Fri, Dec 1 Showers of Light Rain, Fog0.09 in-SHRA, FG
Sat, Dec 2 Light Rain, Showers of Light Rain, Light Drizzle, Fog0.07 in-RA, -SHRA, -DZ, FG
Sun, Dec 3 Light Rain, Fog0.01 in-RA, FG
Mon, Dec 4 Rain, Light Drizzle and Rain, Light Rain, Showers of Light Rain, Fog0.75 inRA, -DZRA, -RA, -SHRA, FG
Wed, Dec 6 FogFG
Thu, Dec 7 FogFG
Sat, Dec 9 Light Rain and Snow, Light Rain0.22 in-RASN, -RA
Sun, Dec 10 Rain, Light Rain, Fog0.72 inRA, -RA, FG
Mon, Dec 11 Light Rain, Showers of Light Rain0.08 in-RA, -SHRA
Tue, Dec 12 Drizzle, Drizzle with Fog, Drizzle with Smoke, FogDZ, FGDZ, FUDZ, FG
Thu, Dec 14 Light Rain, Showers of Light Rain0.03 in-RA, -SHRA
Sat, Dec 16 Light Rain, Fog-RA, FG
Sun, Dec 17 Light Rain-RA
Mon, Dec 18 Fog, Fog and SmokeFG, FGFU
Tue, Dec 19 Fog, Fog and SmokeFG, FGFU
Wed, Dec 20 Light Snow, Light Rain, Light Drizzle, Fog0.27 in-SN, -RA, -DZ, FG
Thu, Dec 21 Light Drizzle and Rain, Light Rain, Light Drizzle, Fog0.08 in-DZRA, -RA, -DZ, FG
Fri, Dec 22 Light Rain, Showers of Light Rain, Fog0.04 in-RA, -SHRA, FG
Sat, Dec 23 Light Drizzle, Fog0.05 in-DZ, FG
Sun, Dec 24 Light Rain0.01 in-RA
Mon, Dec 25 Fog, Fog and Smoke, SmokeFG, FGFU, FU
Tue, Dec 26 Fog and SmokeFGFU
Wed, Dec 27 Light Snow, Drizzle with Fog and Smoke, Fog, Fog and Smoke-SN, FGFUDZ, FG, FGFU
Sat, Dec 30 Light Snow0.10 in-SN
Sun, Dec 31 Light Snow-SN
Thu, Jan 4 Light Snow, Light Blowing Snow-SN, -BLSN
Mon, Jan 8 Light Snow and Ice Pellets, Ice Pellets, Light Freezing Rain and Ice Pellets, Light Freezing Rain0.03 in-SNPL, PL, -FZRAPL, -FZRA
Tue, Jan 9 Light Freezing Rain0.09 in-FZRA
Wed, Jan 10 Freezing Rain, Light Freezing Drizzle, Light Freezing Rain, Fog1.42 inFZRA, -FZDZ, -FZRA, FG
Thu, Jan 11 Freezing Rain, Light Freezing Rain, Rain, Light Rain, Light Drizzle, Fog0.13 inFZRA, -FZRA, RA, -RA, -DZ, FG
Fri, Jan 12 Freezing Drizzle, Light Rain, Fog0.01 inFZDZ, -RA, FG
Sat, Jan 13 FogFG
Sun, Jan 14 Light Snow; Light Snow and Ice Pellets; Light Rain, Snow, and Ice Pellets0.17 in-SN, -SNPL, -RASNPL
Mon, Jan 15 Fog, Fog and SmokeFG, FGFU
Tue, Jan 16 Drizzle with SmokeFUDZ
Fri, Jan 19 Light Freezing Rain and Snow, Light Freezing Rain, Light Drizzle and Rain, Light Rain, Showers of Light Drizzle and Rain, Light Drizzle, Fog0.21 in-FZRASN, -FZRA, -DZRA, -RA, -SHDZRA, -DZ, FG
Sat, Jan 20 Smoke0.01 inFU
Sun, Jan 21 Light Rain0.13 in-RA
Mon, Jan 22 Fog, Fog and SmokeFG, FGFU
Tue, Jan 23 Light Snow, Light Rain and Snow, Light Rain, Drizzle with Smoke, Fog, Fog and Smoke0.04 in-SN, -RASN, -RA, FUDZ, FG, FGFU
Wed, Jan 24 Light Rain, Light Drizzle, Fog, Fog and Smoke, Smoke0.02 in-RA, -DZ, FG, FGFU, FU
Fri, Jan 26 Light Snow, Showers of Light Snow, Showers of Light Rain and Snow, Fog0.09 in-SN, -SHSN, -SHRASN, FG
Sat, Jan 27 Light Snow, Light Rain and Snow, Fog0.20 in-SN, -RASN, FG
Sun, Jan 28 Light Snow-SN
Fri, Feb 2 Light Snow-SN
Sat, Feb 3 Light Snow, Light Freezing Drizzle, Light Rain, Light Drizzle, Fog0.41 in-SN, -FZDZ, -RA, -DZ, FG
Sun, Feb 4 Light Drizzle and Rain, Light Rain, Light Drizzle, Fog0.21 in-DZRA, -RA, -DZ, FG
Mon, Feb 5 Light Rain, Showers of Light Rain, Fog0.27 in-RA, -SHRA, FG
Tue, Feb 6 Heavy Rain, Rain, Light Rain, Showers of Light Rain, Fog0.89 in+RA, RA, -RA, -SHRA, FG
Wed, Feb 7 Light Rain0.29 in-RA
Thu, Feb 8 Light Drizzle and Rain, Light Rain, Light Drizzle0.12 in-DZRA, -RA, -DZ
Fri, Feb 9 Light Rain-RA
Sat, Feb 10 Rain, Light Rain, Light Drizzle, Fog0.52 inRA, -RA, -DZ, FG
Sun, Feb 11 Light Rain, Showers of Light Rain, Fog0.44 in-RA, -SHRA, FG
Mon, Feb 12 Light Rain, Fog0.36 in-RA, FG
Tue, Feb 13 Light Rain, Showers of Light Rain0.07 in-RA, -SHRA
Wed, Feb 14 FogFG
Thu, Feb 15 Light Rain and Snow, Light Rain0.18 in-RASN, -RA
Fri, Feb 16 Showers of Rain, Light Rain, Showers of Light Rain, Fog0.26 inSHRA, -RA, -SHRA, FG
Sat, Feb 17 Light Rain, Showers of Light Rain0.23 in-RA, -SHRA
Sun, Feb 18 Light Rain, Showers of Light Rain0.06 in-RA, -SHRA
Mon, Feb 19 Showers of Light Rain0.17 in-SHRA
Tue, Feb 20 Light Rain, Fog0.03 in-RA, FG
Wed, Feb 21 Drizzle with Smoke, Fog, Fog and SmokeFUDZ, FG, FGFU
Thu, Feb 22 Rain, Light Rain, Showers of Light Rain0.81 inRA, -RA, -SHRA
Fri, Feb 23 Light Rain, Showers of Light Rain0.30 in-RA, -SHRA
Sat, Feb 24 Light Rain0.32 in-RA
Sun, Feb 25 Light Rain, Fog0.31 in-RA, FG
Mon, Feb 26 Showers of Light Rain0.01 in-SHRA
Tue, Feb 27 Light Rain, Showers of Light Rain0.18 in-RA, -SHRA
Wed, Feb 28 Light Rain, Showers of Light Rain0.09 in-RA, -SHRA

Hours of Daylight and Twilight in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Hours of Daylight and Twilight in the Winter of 1978 at Portland International AirportDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringDec 218 hr, 42 minDec 218 hr, 42 minnightnightdaydayFeb 2811 hr, 4 minFeb 2811 hr, 4 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 the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Sunrise & Sunset with Twilight in the Winter of 1978 at Portland International 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 AMFallSpring6:51 AM6:51 AMFeb 285:55 PMFeb 285:55 PM7:39 AM7:39 AMDec 104:26 PMDec 104:26 PM7:50 AM7:50 AMJan 24:38 PMJan 24:38 PM
The solar day over the course of the Winter of 1978. 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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Solar Elevation and Azimuth in the Winter of 1978 at Portland International 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 AMFallSpring00102020300010102030
northeastsouthwest
Solar elevation and azimuth in the the winter of 1978. 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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Moon Rise, Set & Phases in the Winter of 1978 at Portland International AirportDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringNov 1412:00 PMNov 1412:00 PMNov 3012:20 AMNov 3012:20 AMDec 144:31 AMDec 144:31 AMDec 2911:36 AMDec 2911:36 AMJan 1211:09 PMJan 1211:09 PMJan 2710:20 PMJan 2710:20 PMFeb 116:40 PMFeb 116:40 PMFeb 268:45 AMFeb 268:45 AMMar 131:15 PMMar 131:15 PMMar 277:00 PMMar 277:00 PM5:07 PM5:07 PM7:47 AM7:47 AM7:33 AM7:33 AM4:25 PM4:25 PM5:06 PM5:06 PM4:47 PM4:47 PM7:44 AM7:44 AM4:59 PM4:59 PM7:27 AM7:27 AM6:18 PM6:18 PM6:54 AM6:54 AM6:21 PM6:21 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.

Humidity Comfort Levels in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Humidity Comfort Levels in the Winter of 1978 at Portland International 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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Wind Speed in the Winter of 1978 at Portland International AirportDecJanFeb0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphFallSpring
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Hourly Wind Speed in the Winter of 1978 at Portland International 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.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days in the Winter of 1978 at Portland International Airport

History:198219811980197919781977197619751974
Growing Degree Days in the Winter of 1978 at Portland International AirportDecJanFeb0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FFallSpring
The growing degree days accumulated from reported temperatures over the course of the winter (solid black line), placed over the average accumulation (faint line), with 25th to 75th and 10th to 90th percentile bands. Gaps indicate days without enough temperature reports to calculate a complete daily value; totals following gaps may therefore be understated.

Hourly Wind Direction in 1978 at Portland International Airport

History:198219811980197919781977197619751974
Hourly Wind Direction in 1978 at Portland International 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 1978 at Portland International Airport

History:198219811980197919781977197619751974
Atmospheric Pressure in the Winter of 1978 at Portland International AirportDecJanFeb29.4 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 inHg30.8 inHg30.8 inHgFallSpring
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 Portland International Airport19401950196019701980199020002010202019401940194119411942194219431943194419441947194719481948194919491950195019511951195219521953195319541954195519551956195619571957195819581959195919601960196119611962196219631963196419641965196519661966196719671968196819691969197019701971197119721972197319731974197419751975197619761977197719781978197919791980198019811981198219821983198319841984198519851986198619871987198819881989198919901990199119911992199219931993199419941995199519961996199719971998199819991999200020002001200120022002200320032004200420052005200620062007200720082008200920092010201020112011201220122013201320142014201520152016201620172017201820182019201920202020202120212022202220232023202420242025202520262026
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in the Winter of 1978 at Portland International Airport 1978

Number of Reports by Day in the Winter of 1978 at Portland International AirportDecJanFeb0024244848FallSpring
regularspecialcorrection
The number of reports per day.

Reports by Hour in the Winter of 1978 at Portland International Airport 1978

Reports by Hour in the Winter of 1978 at Portland International 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 Portland International Airport in the winter of 1978.

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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