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Climatological Report (Annual)
Issued by NWS Portland, OR
Issued by NWS Portland, OR
000
CXUS56 KPQR 111842 CCA
CLAEUG
ANNUAL CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
1030 AM PST FRI JAN 11 2013
...2012 EUGENE WEATHER YEAR IN REVIEW...
JANUARY...JANUARY HAD A LITTLE BIT OF EVERYTHING. MILD TO START THE
MONTH...A COLD PERIOD IN THE MIDDLE WITH A LITTLE SNOW...HEAVY RAIN
AND FLOODING...THEN GENERALLY MILD AND CALMER TO END THE MONTH.
THERE WERE ALSO A FAIR AMOUNT OF PARTLY CLOUDY DAYS. RECORD RAINFALL
OF 2.39 INCHES FELL ON THE 17TH...WITH OVER 4 INCHES OF RAINFALL
OVER THE FROM THE 17TH TO THE 19TH. SIGNIFICANT URBAN AND RIVER
FLOODING OCCURRED AT THIS TIME...WITH TRACE AMOUNTS TO UP TO AN INCH
OF SNOW JUST PRIOR TO THIS EVENT...WITH A FEW INCHES IN THE HILLS.
TEMPERATURES ALSO REACHED A CHILLY 19 DEGREES ON THE 16TH.
ADDITIONAL RECORD RAINFALL OCCURRED ON THE 24TH.
FEBRUARY...COOLER AND DRIER WAS THE THEME. A BIT MORE CLEARING ALLOWED
NIGHTTIME TEMPERATURES TO BE COOLER THAN NORMAL...WITH MORE THAN
HALF THE NIGHTS THIS MONTH DROPPING TO FREEZING OR BELOW. ONLY TWO
DAYS THIS MONTH HAD PRECIPITATION ABOVE 0.37 INCHES...AND THESE WERE
THE LAST FEW DAYS OF THE MONTH.
MARCH...IT WAS A VERY ACTIVE MONTH...WITH PRECIPITATION WELL ABOVE
NORMAL AND TEMPERATURES WELL BELOW NORMAL. SEVERAL SIGNIFICANT
EVENTS CONTRIBUTED TO A MONTHLY TOTAL OF 9.94 INCHES...MAKING IT THE
5TH WETTEST MONTH ON RECORD. 7 DAYS SAW RAINFALL OF AT LEAST A HALF
INCH...WHICH WAS A NEW RECORD...WITH 6 OF THOSE DAYS AT 0.80 INCHES
OR MORE. RECORD PRECIPITATION OF 1.92 INCHES ON THE 21ST WAS ALMOST
0.75 INCHES ABOVE THE OLD RECORD. A GOOD PORTION OF THIS
PRECIPITATION STARTED OFF AS SNOW...AS 7.5 INCHES WERE RECORDED AT
THE AIRPORT IN THE MORNING...WITH HIGHER AMOUNTS IN THE HILLS AROUND
TOWN...AND WIDESPREAD POWER OUTAGES WERE FOUND.
APRIL...AN UNEVENTFUL MONTH WITH RAINFALL CLOSE TO SEASONAL NORMALS
AND TEMPERATURES SLIGHTLY ABOVE...MAINLY DUE TO WARMER OVERNIGHT LOW
TEMPERATURES. BUT THERE WERE A FEW RECORDS SET FOR WARM DAYTIME AND
NIGHTTIME TEMPERATURES. 2012 WAS THE FIRST YEAR SINCE 2008 THAT THE
MERCURY CLIMBED INTO THE 80S IN APRIL. IN FACT...2012 HAD AT LEAST
ONE DAY OF 80 DEG OR WARMER EACH MONTH FROM APRIL TO OCTOBER. THERE
WERE ALSO SEVERAL NIGHTS IN THE LATTER HALF OF THE MONTH WHERE THE
TEMPERATURE DID NOT GET BELOW 50 DEGREES.
MAY...ANOTHER HO-HUM MONTH AS RAINFALL AND TEMPERATURES WERE
BASICALLY WERE VERY CLOSE TO SLIGHTLY BELOW NORMAL...IN SPITE OF THE
FACT THAT A DAILY RAINFALL RECORD OF 1.21 INCHES ON THE 24TH BROKE A 19
YEAR RECORD BY 0.35 INCHES. ALSO...THE FIRST 70 DEGREE DAY DID NOT
OCCUR UNTIL MAY 7.
JUNE...AS HAS BEEN THE CASE FOR SEVERAL SPRINGS...JUNE WAS WETTER
AND COOLER THAN NORMAL. AVERAGE HIGH TEMPERATURES WERE NEARLY 3
DEGREES BELOW NORMAL DESPITE A FEW 80 DEGREE DAYS...THOUGH THE
AVERAGE MONTHLY TEMPERATURE WAS ONLY ABOUT 1 DEGREE BELOW NORMAL.
JULY...AFTER A VERY WET SPRING...JULY STARTED THE SUMMER OFF ON A
DRY NOTE. MONTHLY RAINFALL WAS ABOUT A THIRD OF NORMAL. THE FIRST 90
DEGREE DAY OF THE YEAR OCCURRED ON THE 8TH...WHICH IS ABOUT 18 DAYS
LATER THAN THE 1981-2010 NORMALS.
AUGUST...AUGUST WAS A DRY AND WARM MONTH. AFTER NO 100 DEG READINGS
IN 2011...TEMPERATURES FINALLY CLIMBED BACK TO ABOVE 100 DEG.
WARMEST DAY OF THE YEAR WAS ON AUGUST 4TH WITH A RECORD HIGH OF 101
DEG...BREAKING THE 100 DEG RECORD FROM WAY BACK IN 1932. IN SPITE OF
ONLY RECORDING 0.03 INCHES OF RAIN IN ONE 24 HR PERIOD...THERE WERE
STILL 28 YEARS THAT HAD LESS THAN THAT.
SEPTEMBER...AFTER COMPLAINING ABOUT HOW WET THINGS WERE EARLIER IN
THE YEAR...MANY FOLKS MAY HAVE BEEN HOPING FOR SOME RAIN FOR THEIR
LAWNS. IT WAS THE 5TH DRIEST SEPTEMBER SINCE 1940...AS ONLY 0.01
INCH OF RAIN WAS RECORDED. AND THERMOMETER WAS STILL WELL INTO THE
80S TO END THE MONTH...WITH 87 DEGREES ON THE 28TH TYING A RECORD
FROM 1935.
OCTOBER...BEAUTIFUL LATE SUMMER WEATHER CONTINUED INTO OCTOBER.
HOWEVER THE FAUCET GOT TURNED BACK ON AROUND THE 12TH WITH MUCH
WETTER WEATHER. 17 OF THE NEXT 20 DAYS WENT ON TO PRODUCE A LEAST A
TRACE OF RAIN...WITH AN INCH ABOVE NORMAL FOR THE MONTH. WHILE
CONDITIONS TURNED SOMEWHAT COOLER...NUMEROUS RECORD WARM OVERNIGHT
LOWS WERE RECORDED TO END THE MONTH WITH LOWS 55 AND ABOVE FOR THREE
NIGHTS IN A ROW. THE SHORTER DAYLIGHT HOURS BECAME MORE APPARENT AS
THE MERCURY ALSO TOUCHED THE FREEZING MARK 15 DAYS EARLY - WITH 32
DEGREES ON THE 5TH AND 6TH. THIS WAS DESPITE HIGHS WELL INTO THE
70S.
NOVEMBER...ACTIVE WEATHER THAT STARTED IN OCTOBER CONTINUED IN
NOVEMBER...BUT NOVEMBER RAINFALL WAS STILL NEAR NORMAL. TEMPERATURES
WERE MILDER AND THIS MOSTLY IN PART DUE TO MORE CLOUD COVER AT NIGHT
WHICH KEPT OVERNIGHT LOWS FROM DROPPING TOO COOL. PLUS THERE WERE
STILL A 70 DEGREE DAY EARLY IN THE MONTH.
DECEMBER...VERY TYPICAL THOUGH MILDER DECEMBER WEATHER WAS THE RULE.
23 DAYS OF MEASURABLE RAINFALL...ONLY THREE DAYS WITH ANY RAIN
FALLING...WITH 2 DAYS OF RAINFALL ABOVE AN INCH. CLOUDY SKIES MEANT
WARMER NIGHTS AND AN OVERALL WARMER MONTH.
================================================================
RECORDS SET IN 2012 (PERIOD OF RECORD IS 1892 TO 2012)...
(PREVIOUS RECORD IN PARENTHESES)
JANUARY....
18TH RECORD DAILY TOTAL RAINFALL 2.39 IN (2.13/1911)
19TH TIED RECORD WARM OVERNIGHT LOW 49 DEG (1975,1972,1970)
24TH RECORD DAILY TOTAL RAINFALL 1.71 IN (1.24/1996)
FEBRUARY...
NONE.
MARCH...
7TH TIED RECORD OVERNIGHT LOW 25 DEG (1985, 1918)
18TH TIED RECORD COOL AFTERNOON HIGH 45 DEG (2002, 1948)
21ST RECORD COOL AFTERNOON HIGH TEMP 36 DEG (43/1975,1904)
21ST RECORD DAILY TOTAL RAINFALL 1.92 IN (1.21/1998)
5TH WETTEST MARCH ON RECORD 9.94 IN
APRIL...
23RD TIED RECORD WARM OVERNIGHT LOW 51 DEG (1898)
23RD TIED RECORD DAILY HIGH TEMP 80 DEG (1895)
24TH RECORD WARM OVERNIGHT LOW TEMP 53 DEG (48/1910)
25TH RECORD WARM OVERNIGHT LOW TEMP 50 DEG (49/1978)
MAY...
24TH RECORD DAILY TOTAL RAINFALL 1.21 IN (0.86, 1993)
JUNE
6TH TIED RECORD OVERNIGHT LOW 37 DEG (1999)
30TH TIED RECORD WARM OVERNIGHT LOW 60 DEG (1942,1937,1897)
JULY...
NONE
AUGUST
4TH RECORD DAILY HIGH TEMP 101 DEG (100/1932)
SEPTEMBER...
28TH TIED RECORD DAILY HIGH TEMP 87 DEG (1935)
5TH DRIEST SEPTEMBER ON RECORD 0.01 IN
OCTOBER...
5TH RECORD OVERNIGHT LOW TEMP 32 DEG (33/1972)
15TH TIED RECORD WARM OVERNIGHT LOW 59 DEG (1988)
28TH RECORD WARM OVERNIGHT LOW TEMP 58 DEG (55/1939)
29TH RECORD WARM OVERNIGHT LOW TEMP 58 DEG (53/2011)
30TH TIED RECORD WARM OVERNIGHT LOW 55 DEG (1966)
NOVEMBER...
4TH RECORD WARM OVERNIGHT LOW TEMP 54 DEG (52/1988)
4TH RECORD DAILY HIGH TEMP 74 DEG (71,1975)
19TH TIED RECORD WARM OVERNIGHT LOW 52 DEG (1909)
DECEMBER...
NONE.
================================================================
2012 MEAN TEMPERATURE AND RAINFALL RANKINGS...
(1 IS THE WARMEST OR WETTEST...AND 123 IS THE COLDEST OR DRIEST)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
TEMP 49 91 106 36 86 100 88 14 25 27 22 38
RAIN 37 77 5 30 47 22 67 93 119 36 42 43
SEASON TEMPERATURE RAINFALL DATES USED
WINTER 2011-12 69 58 22 DEC-21 MAR
SPRING 2012 74 17 22 MAR-21 JUN
SUMMER 2012 45 93 22 JUN-21 SEP
DEEP SUMMER 2012 25 89 5 JUL-31 AUG
EARLY AUTUMN 2012 24 70 1 SEP-15 OCT
AUTUMN 8 32 22 SEP-21 DEC
2012 YEAR 36 22 - - - -
================================================================
2012 TEMPERATURE DATA...
AVG AVG AVG DEPARTURE TEMP EXTREMES/ DATE
MONTH HIGH LOW MEAN FROM NORMAL HIGHEST LOWEST
================================================================
JAN 48.6 33.5 41.1 +0.4 62 ON 4TH 19 ON 16TH
FEB 50.3 33.0 41.7 -1.2 60 ON 24TH 24 ON 6TH
MAR 52.1 36.0 44.1 -2.6 68 ON 8TH 25 ON 7TH
APR 61.4 42.1 51.8 +1.6 80 ON 23RD 33 ON 6TH
MAY 66.7 42.6 54.7 -0.6 83 ON 13TH 33 ON 18TH
JUN 70.6 47.7 59.2 -1.2 85 ON 16TH 36 ON 10TH
JUL 80.5 51.4 66.0 -0.8 91 ON 8TH 42 ON 4TH
AUG 85.2 51.5 68.4 +1.5 101 ON 4TH 43 ON 31ST
SEP 80.2 46.1 63.2 +1.3 95 ON 7TH 39 ON 2ND
OCT 65.9 43.9 54.9 +2.2 83 ON 1ST 32 ON 6TH, 5TH
NOV 54.4 41.6 48.0 +3.1 74 ON 4TH 32 ON 26TH
DEC 47.7 37.3 42.5 +2.9 58 ON 4TH 30 ON 31ST, 15TH
2012 63.3 43.6 53.2 +0.6 101 ON AUG 4 19 ON JAN 16
NORMAL 63.3 41.9 52.6 <-------- 1981-2010 CLIMATIC NORMALS
DAYS WITH HIGHS OF... DAYS WITH LOWS OF...
MONTH <=32 60+ 70+ 80+ 90+ 100+ <=20 <=32 60+ 70+
===============================================================
JAN 0 1 0 0 0 0 1 15 0 0
FEB 0 1 0 0 0 0 0 14 0 0
MAR 0 3 0 0 0 0 0 8 0 0
APR 0 16 5 1 0 0 0 2 0 0
MAY 0 24 13 1 0 0 0 0 0 0
JUN 0 29 17 3 0 0 0 0 1 0
JUL 0 31 31 18 2 0 0 0 1 0
AUG 0 31 31 22 8 1 0 0 2 0
SEP 0 30 28 14 2 0 0 0 0 0
OCT 0 22 11 1 0 0 0 2 0 0
NOV 0 4 1 0 0 0 0 1 0 0
DEC 0 0 0 0 0 0 0 4 0 0
2012 0 192 137 60 12 0 0 46 4 0
NORMAL <1 197 124 58 15 - 1 51 2 0
FIRST AND LAST OCCURRENCES OF... IN 2012 NORMALLY
LAST 32 DEG OR COLDER IN SPRING... MAR 23 APR 20
FIRST 70+ DEG IN SPRING... APR 20 MAR 30
FIRST 80+ DEG IN SPRING/SUMMER... APR 23 MAY 15
FIRST 90+ DEG IN SPRING/SUMMER ... JUL 8 JUN 25
LAST 90+ DEG IN LATE SUMMER/FALL... SEP 13 SEP 11
LAST 80+ DEG IN LATE SUMMER/FALL... OCT 1 SEP 29
LAST 70+ DEG IN LATE SUMMER/FALL... NOV 4 OCT 21
FIRST 32 DEGREES OR LOWER IN FALL... OCT 5 OCT 20
================================================================
2012 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 8.12 +1.25 20 11 5 3 2.55 /JAN 18-19
FEB 4.05 -1.38 18 13 2 0 1.18 /FEB 28-29
MAR 9.94 +4.95 22 17 7 3 2.10 /MAR 20-21
APR 3.62 +0.29 18 12 1 0 1.01 /APR 10-11
MAY 2.68 -0.06 9 5 2 1 1.22 /MAY 24-25
JUN 2.24 +0.74 16 8 0 0 0.55 /JUN 25-26
JUL 0.16 -0.38 3 0 0 0 0.08 /JUL 18
AUG 0.03 -0.58 2 0 0 0 0.03 /AUG 26-27
SEP 0.01 -1.28 1 0 0 0 0.02 /SEP 23
OCT 4.27 +1.02 12 11 2 1 1.49 /OCT 14-15
NOV 7.62 -0.10 18 14 3 2 2.87 /NOV 19-20
DEC 7.45 -0.15 23 15 6 1 1.26 /DEC 1-2
2012 50.19 +4.09 172 106 28 11 2.55 ON JAN 18-19
NORMAL 46.10 N/A 179 91 29 7 - - -
WATER YEAR 2011-12 TOTAL (OCT 1 2011 THROUGH SEP 30 2012)
43.01 INCHES 3.09 INCHES BELOW NORMAL
===========================================================
2012 WIND AND PRESSURE DATA...
MEAN CLIMATE NORMAL STRONGEST PEAK WIND
MONTH SPEED MEAN SPEED (SPEED, DIR AND DATE)
==============================================================
JAN 6.9 MPH 7.6 MPH SOUTH 39 MPH JAN 22
FEB 6.0 7.5 SOUTH 38 MPH FEB 28
MAR 8.4 7.7 SOUTH 51 MPH MAR 12
APR 6.0 7.6 SOUTHWEST 33 MPH APR 26
MAY 6.0 7.2 SOUTHWEST 32 MPH MAY 3
JUN 5.5 7.5 WEST 30 MPH JUN 8
JUL 5.5 8.0 NORTH 36 MPH JUL 23
AUG 6.9 7.7 NORTH 30 MPH AUG 22
SEP 6.0 7.4 NORTH 36 MPH SEP 11
OCT 6.8 6.7 NORTH 36 MPH OCT 3
NOV 6.6 7.6 SOUTH 44 MPH NOV 19
DEC 7.9 7.9 SOUTHWEST 48 MPH DEC 16
2012 5.3 MPH 7.5 SOUTH 51 MPH ON MARCH 12
HIGHEST PRESSURE RECORDED IN 2012... 30.62 ON JAN 27
LOWEST PRESSURE RECORDED IN 2012... 29.24 ON JAN 20
==============================================================
2012 KEY RIVER STAGE DATA...
LOWEST HIGHEST
WILLAMETTE AT EUGENE 9.6 FT ON JUL 25 19.4 FT ON JAN 24
==============================================================
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2012
$$
DATA COMPILED BY DONOFRIO
- National Weather Service
- Dodge City, KS Weather Forecast Office
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- Page last modified: May 1st, 2013 15:31 UTC