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Fall 2012 Weather History at Portland International Airport United States

This report shows the past weather for Portland International Airport, providing a weather history for the fall of 2012. It features all historical weather data series we have available, including the Portland International Airport temperature history for the fall of 2012. 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 Fall of 2012

History:201620152014201320122011201020092008
Temperature history in the Fall of 2012 at Portland International AirportSepOctNov20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°FSummerWinter
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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Hourly Temperature in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWintervery coldcoldcoolwarmcomfortable
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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Cloud Cover in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Daily Precipitation in the Fall of 2012 at Portland International AirportSepOctNov0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inSummerWinter
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in the Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Observed Weather in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
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
Sat, Sep 8 ThunderstormTS
Mon, Sep 10 Rain, Haze, Mist0.04 inRA, HZ, BR
Wed, Sep 19 MistBR
Thu, Sep 20 Light Drizzle, Haze, Mist0.00 in-DZ, HZ, BR
Fri, Sep 21 Light Rain, Light Drizzle, Mist0.00 in-RA, -DZ, BR
Mon, Sep 24 Shallow FogMIFG
Wed, Sep 26 MistBR
Tue, Oct 9 Haze, MistHZ, BR
Wed, Oct 10 Haze, Fog, Mist, Shallow FogHZ, FG, BR, MIFG
Thu, Oct 11 Haze, Mist, Shallow FogHZ, BR, MIFG
Fri, Oct 12 Heavy Rain, Rain, Light Rain, Mist0.85 in+RA, RA, -RA, BR
Sat, Oct 13 Light Rain0.00 in-RA
Sun, Oct 14 Rain, Light Rain, Mist0.19 inRA, -RA, BR
Mon, Oct 15 Heavy Rain, Rain, Light Rain, Light Drizzle, Mist0.50 in+RA, RA, -RA, -DZ, BR
Tue, Oct 16 Rain, Light Rain0.00 inRA, -RA
Thu, Oct 18 Light Rain, Fog, Mist, Shallow Fog0.05 in-RA, FG, BR, MIFG
Fri, Oct 19 Heavy Rain, Rain, Light Rain, Mist0.41 in+RA, RA, -RA, BR
Sat, Oct 20 Heavy Rain, Rain, Light Rain, Mist0.24 in+RA, RA, -RA, BR
Sun, Oct 21 Rain, Light Rain, Mist0.25 inRA, -RA, BR
Mon, Oct 22 Rain, Light Rain, Mist0.35 inRA, -RA, BR
Tue, Oct 23 Rain, Light Rain0.16 inRA, -RA
Wed, Oct 24 Light Rain0.04 in-RA
Thu, Oct 25 Light Rain0.03 in-RA
Fri, Oct 26 Light Rain, Mist0.04 in-RA, BR
Sat, Oct 27 Heavy Rain, Rain, Light Rain, Light Drizzle, Mist0.49 in+RA, RA, -RA, -DZ, BR
Sun, Oct 28 Rain, Light Rain, Mist0.49 inRA, -RA, BR
Mon, Oct 29 Heavy Rain, Light Rain0.49 in+RA, -RA
Tue, Oct 30 Heavy Rain, Rain, Light Rain, Mist0.32 in+RA, RA, -RA, BR
Wed, Oct 31 Rain, Light Rain, Mist0.22 inRA, -RA, BR
Thu, Nov 1 Heavy Rain, Rain, Light Rain, Mist0.23 in+RA, RA, -RA, BR
Fri, Nov 2 Rain, Light Rain, Mist0.14 inRA, -RA, BR
Sat, Nov 3 Rain, Light Rain, Mist0.17 inRA, -RA, BR
Sun, Nov 4 Light Rain0.00 in-RA
Mon, Nov 5 Light Rain, Light Drizzle, Mist0.04 in-RA, -DZ, BR
Tue, Nov 6 Rain, Light Rain, Light Drizzle, Mist0.10 inRA, -RA, -DZ, BR
Wed, Nov 7 Light Rain, Shallow Fog0.00 in-RA, MIFG
Thu, Nov 8 Shallow Fog0.00 inMIFG
Fri, Nov 9 MistBR
Sat, Nov 10 MistBR
Sun, Nov 11 Rain, Light Rain, Mist0.28 inRA, -RA, BR
Mon, Nov 12 Rain, Light Rain, Light Drizzle, Mist0.59 inRA, -RA, -DZ, BR
Tue, Nov 13 Light Drizzle0.00 in-DZ
Wed, Nov 14 Fog, Mist, Patches of Fog, Shallow FogFG, BR, BCFG, MIFG
Thu, Nov 15 Fog, Mist, Patches of FogFG, BR, BCFG
Sat, Nov 17 Heavy Rain, Rain, Light Rain, Mist0.46 in+RA, RA, -RA, BR
Sun, Nov 18 Rain, Light Rain, Mist0.31 inRA, -RA, BR
Mon, Nov 19 Heavy Rain, Rain, Light Rain, Mist1.63 in+RA, RA, -RA, BR
Tue, Nov 20 Heavy Small Hail and Rain, Heavy Rain, Rain, Light Rain, Mist0.39 in+GSRA, +RA, RA, -RA, BR
Wed, Nov 21 Heavy Rain, Rain, Light Rain, Mist0.39 in+RA, RA, -RA, BR
Thu, Nov 22 MistBR
Fri, Nov 23 Heavy Rain, Rain, Light Rain, Mist0.86 in+RA, RA, -RA, BR
Sat, Nov 24 Heavy Rain, Rain, Light Rain, Mist, Shallow Fog0.22 in+RA, RA, -RA, BR, MIFG
Sun, Nov 25 MistBR
Wed, Nov 28 Light Rain0.04 in-RA
Thu, Nov 29 Rain, Light Rain0.23 inRA, -RA
Fri, Nov 30 Rain, Light Rain, Mist0.29 inRA, -RA, BR

Hours of Daylight and Twilight in the Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Hours of Daylight and Twilight in the Fall of 2012 at Portland International AirportSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterSep 2212 hr, 12 minSep 2212 hr, 12 minnightnightdaydayNov 308 hr, 59 minNov 308 hr, 59 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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Sunrise & Sunset with Twilight and Daylight Saving Time in the Fall of 2012 at Portland International AirportSepOctNov12 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 AMSummerWinter6:32 AM6:32 AMSep 17:47 PMSep 17:47 PM7:29 AM7:29 AMNov 304:28 PMNov 304:28 PM7:53 AM7:53 AMNov 35:53 PMNov 35:53 PM6:56 AM6:56 AMSep 217:08 PMSep 217:08 PMDSTNov 4DSTNov 4
The solar day over the course of the Fall of 2012. 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. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Solar Elevation and Azimuth in the Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Solar Elevation and Azimuth in the Fall of 2012 at Portland International AirportSepOctNov12 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 AMSummerWinter0102020300010203040
northeastsouthwest
Solar elevation and azimuth in the the fall of 2012. 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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Moon Rise, Set & Phases in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterAug 18:28 PMAug 18:28 PMAug 178:55 AMAug 178:55 AMAug 316:59 AMAug 316:59 AMSep 157:11 PMSep 157:11 PMSep 298:19 PMSep 298:19 PMOct 155:03 AMOct 155:03 AMOct 2912:50 PMOct 2912:50 PMNov 132:09 PMNov 132:09 PMNov 286:47 AMNov 286:47 AMDec 1312:42 AMDec 1312:42 AMDec 282:22 AMDec 282:22 AM8:06 PM8:06 PM6:45 AM6:45 AM7:05 PM7:05 PM6:47 AM6:47 AM6:27 AM6:27 AM6:50 PM6:50 PM6:25 PM6:25 PM7:50 AM7:50 AM6:23 PM6:23 PM5:52 PM5:52 PM8:44 AM8:44 AM4:38 PM4:38 PM4:04 PM4:04 PM7:30 AM7:30 AM7:54 AM7:54 AM5:18 PM5:18 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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Humidity Comfort Levels in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
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 Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Wind Speed in the Fall of 2012 at Portland International AirportSepOctNov0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mphSummerWinter
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Hourly Wind Speed in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
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 2012 at Portland International Airport

History:201620152014201320122011201020092008
Hourly Wind Direction in 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in the Fall of 2012 at Portland International Airport

History:201620152014201320122011201020092008
Atmospheric Pressure in the Fall of 2012 at Portland International AirportSepOctNov29.0 inHg29.0 inHg29.2 inHg29.2 inHg29.4 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 inHgSummerWinter
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 Airport1940195019601970198019902000201020201940194019411941194219421943194319441944194719471948194819491949195019501951195119521952195319531954195419551955195619561957195719581958195919591960196019611961196219621963196319641964196519651966196619671967196819681969196919701970197119711972197219731973197419741975197519761976197719771978197819791979198019801981198119821982198319831984198419851985198619861987198719881988198919891990199019911991199219921993199319941994199519951996199619971997199819981999199920002000200120012002200220032003200420042005200520062006200720072008200820092009201020102011201120122012201320132014201420152015201620162017201720182018201920192020202020212021202220222023202320242024
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in the Fall of 2012 at Portland International Airport 2012

Number of Reports by Day in the Fall of 2012 at Portland International AirportSepOctNov002020404060608080100100SummerWinter
regularspecialcorrection
The number of reports per day.

Reports by Hour in the Fall of 2012 at Portland International Airport 2012

Reports by Hour in the Fall of 2012 at Portland International AirportSepOctNov12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSummerWinter
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 fall of 2012.

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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