Climatological Report (Annual) Issued by NWS Portland, OR
000
CXUS56 KPQR 021856
CLAPDX
ANNUAL CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
1055 AM PST SUN JAN 2 2022
...PORTLAND 2021 WEATHER IN REVIEW...
=================================================================
2021 NOTABLE RECORDS... 2021 NOTABLE WEATHER EVENTS...
*** 6TH WARMEST JANUARY *** ICE/SNOW OF MID-FEBRUARY
*** 5TH WARMEST APRIL *** MAJOR HEAT WAVE OF LATE JUNE
*** THE DRIEST APRIL *** HEAT WAVE OF MID-AUGUST
*** 6TH DRIEST MAY *** WARMEST SUMMER ON RECORD
*** THE WARMEST JUNE *** HEAVY RAIN MID-NOVEMBER
*** 5TH WARMEST JULY *** SNOW IN LATE DECEMBER
*** 4TH WARMEST AUGUST
*** 7TH WETTEST SEPTEMBER
*** 3RD WARMEST NOVEMBER
*** YEAR WITH THE MOST DAYS WITH HIGH TEMPERATURE OF 80+ DEG
*** 2ND WARMEST YEAR ON RECORD
MONTHLY WEATHER RECAPS...
JANUARY...2021 STARTED ON A MILD AND WET NOTE. NORMALLY, PORTLAND
WOULD SEE 8 NIGHTS AT/OR BELOW FREEZING. BUT, ONLY IN 3 THIS
YEAR (19/20TH AND 23RD). RAINFALL OF 1.94 INCHES ON THE 12TH
MADE FOR THE 8TH WETTEST JANUARY DAY ON RECORD SINCE 1941. IN
FACT, RAINFALL FROM THE 11TH TO 12TH WAS 2.53 INCHES AT THE
AIRPORT, WITH REPORTS OF 3 OR MORE INCHES AROUND THE METRO.
HEAVY RAIN OVER THE COLUMBIA GORGE DURING THAT TIME LED TO A
DEBRIS FLOW NEAR DODSON, CLOSING I-84 FOR A TIME. JAN 2021 WAS
THE 6TH WARMEST JAN ON RECORD.
FEBRUARY...MILD AND WET WEATHER OF JANUARY CONTINUED INTO FEBRUARY.
THEN, A BREAK IN THE WEATHER FROM THE 7TH TO 10TH. AFTERWARDS,
COLD OFFSHORE FLOW ARRIVED, WITH FRIGID EAST WINDS GUSTING 40
TO 50 MPH ACROSS THE METRO AREA FROM THE 11TH TO 14TH. DURING
THAT TIME, THERE WAS PLENTY OF PRECIPITATION, WITH HEAVY ICE
AND SLEET ACCUMULATIONS, ALONG WITH HEAVY SNOW. TO SOUTH SIDE
OF THE METRO, PRECIPITATION STAYED AS FREEZING RAIN, WITH ICE
ACCUMULATIONS OF 1 TO 3 INCHES. WHILE, MORE SNOW THAN ICE FELL
FROM THE COLUMBIA RIVER NORTHWARD, WITH 10 TO 15 INCHES OF
SNOW REPORTED FROM TROUTDALE NORTHWARD ACROSS CLARK COUNTY.
INTERSTATE 84 WAS CLOSED FOR DAYS, AS 12 TO 24 INCHES OF SNOW
ACCUMULATED IN THE GORGE BETWEEN TROUTDALE AND HOOD RIVER.
THE 6.1 INCHES OF SNOW AT PORTLAND AIRPORT ON THE 12TH TIED
12 FEB 1993 AS THE SNOWIEST DAY IN FEBRUARY ON RECORD. ALSO,
THE TOTAL SNOW (10.1 INCHES) OF FEB 2021 WAS SNOWIEST FEB
SINCE FEB 1949, WHICH HAD 11.6 INCHES). THE SIGNIFICANT ICE
ACCUMULATIONS ACROSS PORTLAND AND TO THE SOUTH CREATED
EXTENSIVE DAMAGE TO TREES AND POWER LINES, WITH POWER OUTAGES
LASTING FOR SEVERAL DAYS, AND UP TO A FEW WEEKS IN HEAVY HIT
AREAS SUCH AS OREGON CITY WESTWARD TO TUALATIN.
MILD WEATHER RETURNED TO THE REGION ON THE 15TH, AND LASTED
THROUGH THE END OF FEBRUARY.
MARCH...CONSIDERING THE WILD WEATHER OF FEBUARY, MARCH ARRIVED LIKE
A LAMB, WITH MILD DRY WEATHER. BUT, IT ALSO ENDED LIKE A LAMB,
WITH TEMPERATURES AROUND 70 DEG. OVERALL, WEATHER WAS RATHER
TYPICAL FOR MARCH, COMPLETE WITH OCCASIONAL SHOWERS.
APRIL...THIS WAS A WELCOME BREAK FROM NORMALLY WET AND COOLISH
APRILS, AS HIGH PRESSURE DOMINATED THE WEATHER PATTERN. THIS
BLOCKED INCOMING WEATHER FRONTS, ALLOWING FOR DRIER AND
WARMER WEATHER. AFTERNOON TEMPERATURES WERE OFTEN IN THE 60S
AND 70S. THE WARMEST DAYS WERE 17TH/18TH, WHEN TEMPERATURES
REACHED INTO THE LOWER TO MIDDLE 80S. BUT, IT WAS A MUCH
DRIER THAN NORMAL APRIL, WITH TOTAL RAINFALL OF 0.39 INCH
(2.34 INCHES BELOW NORMAL). APRIL 2021 WAS THE 5TH WARMEST
APRIL AND THE DRIEST ON RECORD (SINCE 1941).
MAY...THE DRY STREAK CONTINUED, WITH JUST 6 DAYS WITH MEASUREABLE
(0.01 INCH OR MORE) RAINFALL IN MAY. TOTAL RAINFALL FOR MAY
WAS 0.58 INCH, NEAR 2 INCHES BELOW NORMAL. THIS MADE MAY 2021
THE 6TH DRIEST MAY FOR PORTLAND. GUSTY SOUTH WINDS OF 35 TO
40 MPH ASSOCIATED WITH A FAST MOVING FRONT ON THE 27TH CAUSED
SOME DAMAGE TO TREES OVER THE WEST HILLS AND METRO AREA.
TEMPERATURES TOOK MORE OF ROLLERCOAST RIDE IN MAY, BUT THE
MONTHLY AVERAGE ENDED BEING ONLY A TAD ABOVE NORMAL.
JUNE...JUNE STARTED WARM AND DRY, WITH TEMPERATURES IN THE 90S
ON THE 1ST AND 2ND. THEN, WEATHER RESEMBLED THAT MORE LIKE
ANY OTHER JUNE, WITH CLOUDS, RAIN, THE TYPICAL TEMPERATURE
YOYO, FROM MIDDLE 60S TO LOWER 70S. THEN, HIGH PRESSURE
BUILT OVER THE REGION, BRINGING DRY AND WARMER WEATHER.
TEMPERATURES ROSE INTO THE 90S BY THE 20TH, WITH 97 DEG ON
THE 21ST. HIGH PRESSURE WEAKENED A BIT, WITH TEMPERATURES
BACK TO THE LOWER 80S. BUT, THAT HIGH PRESSURE DOME PUSHED
BACK OVER THE PACIFIC NW ON THE 25TH, BRINGING VERY HOT
WEATHER. TEMPERATURES ROSE TO 108 ON THE 26TH, BREAKING
THE HOTTEST DAY EVER AT PORTLAND (PRIOR WAS 107 DEG IN
30 JUL 1965, AND 8TH AND 10TH OF AUG 1981). BUT, THAT
WAS BROKEN AGAIN THE NEXT DAY WITH 112 DEG, THEN BROKEN
AGAIN AT 116 DEG ON THE 28TH. WORST YET, THE OVERNIGHT
TOOK MUCH LONGER TO COOL, BUT ONLY DOWN TO THE MID 70S
ON MORNINGS OF THE 27TH AND 28TH. THESE WERE AMONG THE
WARMEST OVERNIGHT LOWS EVER, WITH THE 75 DEG SURPASSING
THE PRIOR WARMEST EVER (74 DEG ON 28TH JULY 2009).
THE ELDERLY AND THE VERY YOUNG, ALONG WITH THOSE THAT
HAD NO AIR CONDITIONING, SUFFERED DURING THIS HEAT WAVE.
HUNDREDS SUFFERED FROM HEAT SICKNESS AND NEEDED TO BE
HOSPITALIZED. THE HEAT BUCKLED ROADS, AND FORCED MASS
TRANSIT TRAINS TO STOP. MANY BUSINESSES CLOSED 27-28TH,
HOPING TO MINIMIZE HEAT STRESS ON CUSTOMERS/EMPLOYEES.
JULY...WARM AND DRY WEATHER CONTINUED. PASSING SPRINKLES ON
FIRST WERE THE ONLY DROPS OF RAIN IN JULY FOR PORTLAND.
WHILE DRY JULYS ARE NOT ALL THAT UNCOMMON, JULY 2021
JOINED 2017, 2013, 2003, 1984, 1960, 1958, AND 1952 AS
THE ONLY OTHER MONTHS WITH A TRACE RECORDED (ONLY 1967
HAD 0 RAINFALL). JULY ENDED AS THE 5TH WARMEST JULY.
AUGUST...WHILE NOT AS WARM AS JULY OR LATE JUNE, IT STILL
FELT RATHER WARM. ANOTHER ROUND OF HOT TEMPERATURES FROM
THE 10TH TO 13TH, WITH 102 TO 103 ON 11TH/12TH. BUT,
AFTER THAT HEAT WAVE ENDED ON THE 15TH, TEMPERATURES
COOLED BACK TO THE 70S AND 80S FOR REST OF AUGUST.
EVEN SO, IT WAS THE 4TH WARMEST AUGUST ON RECORD.
SEPTEMBER...WAS A MILD MONTH, WITH TEMPERATURES CLOSER TO
THAT EXPECTED FOR A SEPTEMBER. THOUGH FIRST HALF WAS DRY
RAIN ARRIVED ON THE 17TH, WITH RATHER HEAVY RAIN ON THE
18TH AND 19TH. RAIN ON THE 18TH (1.31 INCHES) WAS THE
9TH WETTEST SEPTEMBER ON RECORD.
AS SUMMER CLOSED ON THE 20TH, 2021 WOULD FINISH AS THE
WARMEST SUMMER ON RECORD, SURPASSING PRIOR WARMEST 2015).
OCTOBER...IT WAS AN OCTOBER THAT IS MORE EXPECTED, WITH COOL
SWEATER WEATHER AND SOME RAIN FROM TIME TO TIME. WHILE
THERE WER NOT BIG RAIN EVENTS, RAINFALL FOR OCTOBER ENDED
JUST A WEE BIT ABOVE NORMAL. GUSTY OFFSHORE FLOW WITH
EAST WINDS GUSTING 35 TO 45 MPH ON THE 30TH/31ST ENSURED
A DRY BUT COOLISH HALLOWEEN.
NOVEMBER...RAINS CONTINUED THROUGH THE MONTH, ALONG WITH MILD
TEMPERATURES. AS IS THE CASE WITH MANY RAINY NOVEMBERS,
CLOUDIER SKIES AND MILD TEMPERATURES OFTEN PREVENT THE
TEMPERATURES FROM DROPPING BELOW FREEZING. COOLEST NIGHT
IN NOV 2021 WAS ONLY 33 DEG ON THE 22ND. IN FACT, IT WAS
THE 3RD WARMEST NOVEMBER ON RECORD.
ON THE 11TH AND 12TH, A RATHER SLOW MOVING ATMOSPHERIC
RIVER SHIFTED FROM SOUTHWARD ACROSS THE REGION. HEAVY
RAIN FELL, WITH 2 TO 4 INCHES REPORTED AROUND THE METRO
AREA. MINOR FLOODING WAS COMMON ALONG SMALLER STREAMS
AS WELL AS AREAS WITH POOR DRAINAGE, SUCH AS LOW SPOTS
WHERE STREET DRAINS WERE CLOGGED WITH TREE LEAVES.
DECEMBER...
MILD WEATHER OF LATE NOVEMBER EXTENDED INTO EARLY DAYS OF
DECEMBER, WITH TEMPERATURES INTO THE LOWER 60S ON THE 1ST.
BUT, RETURN TO ONSHORE FLOW AND ARRIVING FRONT ON THE 4TH
BROUGHT MORE REALISTIC EARLY DECEMBER WEATHER, WITH RAIN
AND TEMPERATURES IN THE 40S.
BUT, COLDER TEMPERATURES ROLLED INTO THE REGION ON THE
25TH INTO THE 26TH, WITH SNOW. ACCUMULATIONS OF 1 TO 3
INCHES OF SNOW FELL ACROSS THE REGION ON THE 26TH, WITH
ANOTHER 1 TO 2 INCHES EARLY ON THE 28TH. ANOTHER ROUND
OF SNOW ARRIVED ON 29TH INTO EARLY 30TH.
==============================================================
NEW RECORDS SET IN 2021 (PREVIOUS RECORD IN PARENTHESES)
+ INDICATES MOST RECENT OF MULTIPLE OCCURRENCES
JANUARY...
2ND NEW. DAILY WARM LOW TEMP 48 ( 46 /1994 )
12TH NEW. DAILY RAINFALL 1.94" (1.38"/1975 )
13RD TIED. DAILY WARM HIGH TEMP 61 ( 61 /1991 )
**** 6TH WARMEST JANUARY ON RECORD (AVERAGE TEMP 44.8 DEG)
FEBRUARY...
12TH TIED. DAILY COLD LOW TEMP 24 ( 24 /1948 )
12TH NEW. DAILY COOL HIGH TEMP 30 ( 35 /1990 )
12TH NEW. DAILY SNOWFALL 6.1" ( 5.2"/1990 )
THIS ALSO TIED 19TH FEB 1993 AS SNOWIEST FEB DAY
13TH NEW. DAILY COOL HIGH TEMP 30 ( 31 /1995 )
13TH NEW. DAILY SNOWFALL 3.8" ( 1.4"/1986 )
14TH NEW. DAILY COOL HIGH TEMP 32 ( 34 /1990 )
MARCH....
NO RECORDS SET/TIED.
APRIL...
11TH NEW. DAILY COLD LOW TEMP 32 ( 33 /1991+)
17TH NEW. DAILY WARM HIGH TEMP 84 ( 81 /2016 )
**** 5TH WARMEST APRIL ON RECORD (AVERAGE TEMP 55.2 DEG)
**** DRIEST APRIL ON RECORD, WITH TOTAL RAINFALL 0.39".
PRIOR DRIEST APRIL WAS 1956, WITH 0.53 INCH.
MAY...
NO RECORDS SET/TIED.
**** 6TH DRIEST MAY ON RECORD, WITH TOTAL RAINFALL 0.58 INCH.
JUNE...
1ST NEW. DAILY WARM LOW TEMP 61 ( 60 /2006 )
1ST NEW. DAILY WARM HIGH TEMP 95 ( 94 /1970 )
2ND NEW. DAILY WARM LOW TEMP 65 ( 61 /2009 )
21ST NEW. DAILY WARM LOW TEMP 65 ( 63 /1958+)
21ST NEW. DAILY WARM HIGH TEMP 97 ( 96 /1992 )
22ND TIED. DAILY WARM LOW TEMP 63 ( 63 /1958 )
25TH NEW. DAILY WARM LOW TEMP 65 ( 64 /1973 )
26TH NEW. DAILY WARM LOW TEMP 70 ( 66 /1973+)
26TH NEW. DAILY WARM HIGH TEMP 108 ( 96 /1992 )
27TH NEW. DAILY WARM LOW TEMP 73 ( 71 /2015 )
27TH NEW. DAILY WARM HIGH TEMP 112 ( 96 /1992 )
28TH NEW. DAILY WARM LOW TEMP 75 ( 69 /2015 )
28TH NEW. DAILY WARM HIGH TEMP 116 ( 96 /1992 )
**** HIGH OF 116 IS HIGHEST TEMPERATURE EVER RECORDED AT
PORTLAND AIRPORT. PRIOR TO 2021, THE HIGHEST WAS
107 DEG ON 30 JUL 1965, AND 8TH, 10TH OF AUG 1981.
**** HIGHS ON 26TH, 27TH AND 28TH ARE THE 3 WARMEST DAYS
FOR ALL-TIME AT PORTLAND AIRPORT.
**** LOW OF 75 DEG ON THE 28TH WAS WARMEST LOW TEMPERATURE
RECORDED AT PORTLAND AIRPORT. PREVIOUS RECORD WAS
74 DEG SET ON 28TH JULY 2009.
**** JUNE 2021 IS THE WARMEST JUNE ON RECORD, WITH AVERAGE
TEMP OF 70.7 DEG (PRIOR RECORD WAS 70.3 IN 2015).
JULY...
30TH NEW. DAILY WARM LOW TEMP 69 ( 67 /2018+)
31ST NEW. DAILY WARM LOW TEMP 69 ( 65 /1948 )
**** 5TH WARMEST JULY ON RECORD (AVERAGE TEMP 73.0 DEG)
AUGUST...
5TH NEW. DAILY WARM LOW TEMP 66 ( 65 /2019 )
11TH TIED. DAILY WARM LOW TEMP 69 ( 69 /2014 )
11TH TIED. DAILY WARM HIGH TEMP 102 ( 102 /1977 )
12TH NEW. DAILY WARM LOW TEMP 70 ( 67 /2014 )
13TH NEW. DAILY WARM LOW TEMP 71 ( 66 /2016 )
14TH NEW. DAILY WARM LOW TEMP 68 ( 66 /1998 )
23RD TIED. DAILY COLD LOW TEMP 48 ( 48 /1951 )
**** 4TH WARMEST JULY ON RECORD (AVERAGE TEMP 72.5 DEG)
SEPTEMBER...
18TH NEW. DAILY RAINFALL 1.31" (0.97"/2010 )
18TH IS THE 9TH WETTEST SEPTEMBER DAY ON RECORD.
19TH NEW. DAILY RAINFALL 1.14" (0.97"/1988+)
OCTOBER...
12TH TIED. DAILY COLD LOW TEMP 38 ( 38 /2019 )
13TH TIED. DAILY COOL HIGH TEMP 54 ( 54 /2009 )
NOVEMBER...
12TH NEW. DAILY RAINFALL 1.31" (0.94"/2008 )
18TH IS THE 9TH WETTEST SEPTEMBER DAY ON RECORD.
14TH NEW. DAILY WARM LOW TEMP 60 ( 58 /2001 )
15TH TIED. DAILY WARM HIGH TEMP 62 ( 62 /2001+)
27TH TIED. DAILY WARM HIGH TEMP 63 ( 63 /1947 )
28TH NEW. DAILY WARM HIGH TEMP 63 ( 59 /1940 )
29TH TIED. DAILY WARM HIGH TEMP 58 ( 58 /2008+)
**** 3RD WARMEST NOVEMBER ON RECORD (AVERAGE TEMP 50.4 DEG)
DECEMBER...
1ST NEW. DAILY WARM HIGH TEMP 63 ( 62 /1958 )
TIED 2 OTHER DAYS AS THE 6TH WARMEST DECEMBER
DAY ON RECORD (WARMEST WAS 65 DEG IN 1993)
18TH NEW. DAILY RAINFALL 1.26" (1.01"/1941 )
26TH NEW. DAILY SNOWFALL 0.7" ( 0.6"/1951 )
27TH NEW. DAILY SNOWFALL 1.0" ( 0.7"/1968 )
FOR THE YEAR...
MOST DAYS WITH HIGH TEMPERATURE OF 80+ DEG... 90 DAYS
(PRIOR RECORD... 88 DAYS IN 2015)
MOST DAYS WITH HIGH TEMPERATURE 100+ DEG... 5 DAYS
(2021 TIED 1941 AND 1977 WITH 5 DAYS)
MOST DAYS WITH LOW TEMPERATURE 60+ DEG... 55 DAYS
(2021 TIED 2019 AND 2015 WITH 55 DAYS)
2ND WARMEST YEAR ON RECORD, WITH AVERAGE TEMP 56.6 DEG
(RECORD WARMEST WAS 2015 WITH 57.4 DEG)
==============================================================
2021 PORTLAND MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS
THIS SHOWS WHERE MONTH/YEAR RANKS IN PORTLANDS CLIMATE RECORD
(OCT 1940 THROUGH 2021). RANKINGS APPLY TO ALL OF SAME MONTH,
OR IN OTHER WORDS, WHERE JAN 2021 COMPARES TO ALL OTHER JAN.
RANKINGS ARE 1 TO 80, WHERE 1 IS WARMEST OR WETTEST ON RECORD
AND 80 IS DRIEST OR COLDEST ON RECORD.
JA FE MA AP MA JU JL AU SE OC NO DE 2021
AVG T 6 59 43 5 16 1 5 4 12 31 3 41 2
PRECIP 22 40 75 81 76 46 73 70 7 24 28 28 45
MAX T 11 72 33 2 20 2 5 12 20 61 6 49 4
MIN T 6 33 49 32 19 1 4 2 13 14 3 33 3
=============================================================
2021 PORTLAND AIRPORT TEMPERATURE DATA
+ BY DATE INDICATES LAST OF SEVERAL OCCURRENCES LISTED
|--- AVERAGES ----| MEAN T DEPART| EXTREME TEMPS & DATE|
MONTH |HIGHS LOWS MEAN| FROM NORMAL | HIGHEST LOWEST |
--------------------------------------------------------------
JAN 49.9 39.6 44.8 +2.9 DEG 61 /13TH+ 27 /23RD
FEB 47.2 36.6 41.9 -2.2 DEG 58 /28TH 24 /13TH+
MAR 56.2 38.1 47.2 -1.1 DEG 71 /31ST 30 /16TH
APR 67.3 43.1 55.2 +2.4 DEG 84 /17TH 32 /11TH
MAY 70.5 49.6 60.1 +0.7 DEG 88 /31ST 41 /19TH
JUN 82.6 58.8 70.7 +6.5 DEG 116 /28TH 50 /16TH+
JUL 85.5 60.6 73.0 +2.8 DEG 98 /29TH 57 /22ND
AUG 84.0 61.0 72.5 +1.9 DEG 103 /12TH 48 /23RD
SEP 77.7 55.1 66.4 +1.0 DEG 89 /24TH 45 /16TH
OCT 62.1 47.5 54.8 -0.8 DEG 72 / 2ND 38 /12TH
NOV 56.0 44.7 50.4 +3.3 DEG 66 /14TH 33 /22ND
DEC 45.8 36.5 41.1 -0.5 DEG 63 / 1ST 26 /27TH
2021 65.5 47.7 56.6 +1.5 DEG 116 /JUL 27 24 /FEB 13
NORMAL 64.0 46.3 55.1
DAYS IN 2021 WITH TEMPERATURE OF...
|------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---|
<=32 60+ 70+ 80+ 90+ 100+ <=20 <=32 60+ 70+
--------------------------------------------------------------
JAN 0 2 0 0 0 0 0 3 0 0
FEB 3 0 0 0 0 0 0 7 0 0
MAR 0 9 1 0 0 0 0 3 0 0
APR 0 24 12 3 0 0 0 1 0 0
MAY 0 31 13 8 0 0 0 0 0 0
JUN 0 30 22 18 9 3 0 0 11 3
JUL 0 31 31 27 6 0 0 0 17 0
AUG 0 31 31 21 9 2 0 0 20 2
SEP 0 30 24 13 0 0 0 0 6 0
OCT 0 23 1 0 0 0 0 0 0 0
NOV 0 8 0 0 0 0 0 0 1 0
DEC 0 1 0 0 0 0 0 6 0 0
2021 3 220 135 90 24 5 0 20 55 5
NORMAL 1 197 124 58 11 <1 2 29 29 0
FIRST/LAST OCCURRENCES OF... IN 2021 AVERAGE
LAST 32 DEG OR COLDER IN SPRING 11 APR (19 MAR)
FIRST 70+ DEG OF THE YEAR 31 MAR (30 MAR)
FIRST 80+ DEG OF THE YEAR 17 APR (10 MAY)
FIRST 90+ DEG OF THE YEAR 1 JUN (16 JUN)
LAST 90+ DEG OF THE YEAR 15 AUG ( 8 SEP)
LAST 80+ DEG OF THE YEAR 25 SEP (29 SEP)
LAST 70+ DEG OF THE YEAR 2 OCT (18 OCT)
FIRST 32 DEG OR COLDER IN FALL 26 DEC (15 NOV)
==============================================================
2021 PORTLAND AIRPORT RAINFALL DATA...
TOTAL DEPARTURE DAYS WITH AT LEAST... GREATEST IN
MONTH RAIN FM NORMAL 0.01 0.10 0.50 1.00 24HRS & DATE
---------------------------------------------------------------
JAN 7.03 +2.00 21 16 5 1 1.94 JAN 12
FEB 3.73 +0.13 21 11 2 0 0.99 FEB 12-13
MAR 1.55 -2.42 13 9 0 0 0.28 MAR 21-22
APR 0.39 -2.50 6 1 0 0 0.17 APR 24-25
MAY 0.58 -1.93 6 2 0 0 0.22 MAY 24-25
JUN 1.25 -0.38 8 3 1 0 0.89 JUN 12-13
JUL TRACE -0.50 0 0 0 0 T JUL 1
AUG 0.05 -0.49 2 0 0 0 0.03 AUG 6
SEP 3.76 +2.24 7 5 3 2 1.69 SEP 18-19
OCT 3.72 +0.30 18 12 2 0 0.91 OCT 21-22
NOV 6.43 +0.98 23 17 2 2 2.13 NOV 11-12
DEC 7.10 +1.33 23 16 4 1 X.XX DEC XX
2021 35.59 -1.32 148 92 19 6 2.13 NOV 11-12
NORMAL 36.91 156 93 20 4
TOTAL SNOWFALL... 14.0 INCHES (NORMAL 6.0 INCHES)
PORTLAND WATER YEAR 2020-21 (1 OCT 2020 THROUGH 30 SEP 2021)
30.22 INCHES (6.69 INCHES BELOW NORMAL)
============================================================
2021 PORTLAND AIRPORT WIND AND PRESSURE DATA...
AVERAGE SPEED (MPH) STRONGEST WIND GUST
2021 (NORMAL) DIRECTION SPEED DATE
------------------------------------------------------------
JAN 8.0 (9.3) SOUTHWEST 50 MPH JAN 12
FEB 8.9 (8.7) EAST 40 MPH FEB 11
MAR 6.0 (7.7) SOUTHWEST 35 MPH MAR 19
APR 6.1 (7.1) EAST 34 MPH APR 12
MAY 6.7 (6.7) WEST 38 MPH MAY 27
JUN 6.5 (7.0) SOUTHWEST 39 MPH JUN 6
JUL 7.2 (7.2) NORTHWEST 26 MPH JUL 26
AUG 6.2 (6.8) NORTHWEST 27 MPH AUG 16
SEP 5.7 (6.2) SOUTHWEST 32 MPH SEP 17
OCT 6.8 (6.3) WEST 43 MPH OCT 24
NOV 7.2 (8.0) SOUTH 42 MPH NOV 15
DEC 7.4 (9.3) SOUTH 45 MPH DEC 11
2021 6.8 MPH (7.5) SOUTHWEST 50 MPH JAN 12
BAROMETRIC PRESSURE EXTREMES...
HIGHEST 30.62 INCHES 24 FEB ( 1149 AM PST )
LOWEST 29.04 INCHES 24 OCT ( 0801 AM PST )
==============================================================
2021 MAJOR RIVER EXTREMES
WILLAMETTE RIVER (AT MORRISON ST BRIDGE, DOWNTOWN PORTLAND)...
HIGHEST 13.0 FT 14 JAN 2021 (FLOOD STAGE IS 18.0 FT)
LOWEST -0.3 FT 2 OCT 2021
COLUMBIA RIVER (AT INTERSTATE BRIDGE)...
HIGHEST 12.7 FT 14 JAN 2021 (FLOOD STAGE IS 16.0 FT)
LOWEST -0.6 FT 2 OCT 2021
===============================================================
PORTLAND AIRPORT CLIMATE PERIOD OF RECORDS... OCT 1940 TO 2021
PORTLAND AIRPORT CLIMATE NORMALS... 1991 TO 2020
===============================================================
DATA COMPILED BY ROCKEY
NATIONAL WEATHER SERVICE PORTLAND OREGON
ONLINE AT: WEATHER.GOV/PORTLAND
$$