Climatological Report (Annual)
Issued by NWS Portland, OR

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000
CXUS56 KPQR 050409
CLAEUG

ANNUAL CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
800 PM PST THU 4 JAN 2024

...EUGENE 2023 WEATHER IN REVIEW...

2023 NOTABLE WEATHER EVENTS...
 * 2ND WARMEST MAY ON RECORD
 * WARMEST AUGUST ON RECORD

 *2023: 10TH WARMEST YEAR

2023 MONTHLY WEATHER SUMMARIES...

JANUARY...FAIRLY ACTIVE WEATHER DURING THE FIRST HALF OF JANUARY.
RAIN WAS RECORDED DURING A STRETCH OF 17 DAYS FROM JAN 2ND THROUGH
18TH, BUT THE MONTH STILL ENDED WELL BELOW NORMAL PRECIPITATION. THE
LATTER HALF OF THE MONTH WAS RATHER DRY. BELOW NORMAL TEMPERATURES
DURING LAST 3 DAYS OF THE MONTH WITH BELOW FREEZING LOWS IN THE 20S.

FEBRUARY...IT WAS A COOL FEBRUARY, ALONG WITH ANOTHER MONTH OF WELL
BELOW NORMAL PRECIPITATION. COLDEST MORNING WAS ON THE 25TH, WITH A
MORNING LOW TEMPERATURE OF 20 DEG. CHILLY WET WEATHER ON THE 13TH,
WITH A MIX OF RAIN AND SNOW, AND A HALF INCH OF SNOW MEASURED ON THE
14TH. ACTIVE WEATHER CLOSED THE MONTH WITH A COOL, SHOWERY PATTERN
BRINGING A MIX OF RAIN AND SNOW THE 26TH TO 28TH. THE 1.98 INCHES OF
PRECIPITATION MADE IT THE 12TH DRIEST FEBRUARY. IT WAS ALSO THE 7TH
COOLEST FEBRUARY.

MARCH...OVERALL, IT WAS A COOL MONTH, WITH PLENTY OF CLOUDS AND
PRECIPITATION, AND SLIGHTLY BELOW NORMAL RAINFALL OF 4.50 INCHES. IT
WAS THE 4TH COOLEST MARCH FOR EUGENE. THE OVERALL PATTERN CARRIED
THE LATE FEBRUARY ACTIVE WEATHER PATTERN ON INTO EARLY MARCH. MANY
OF THE DAYS SAW SHOWERS MIXED WITH SNOW AND HAIL AT TIMES. 1 INCH OF
SNOW FELL ON THE 5TH. A PACIFIC FRONT PUSHED INLAND ON THE 13TH,
BRINGING A ROUND OF BREEZY SOUTH WINDS AND HEAVY RAIN TO THE REGION.
MORE MILD WEATHER THE 15TH TO 22ND WITH HIGHS GENERALLY IN THE 50S
TO LOWER 60S. THEN, ANOTHER COLD FRONT PUSHED ACROSS THE REGION AND
ACTIVE WEATHER RESUMED.

APRIL...OVERALL, IT WAS A BIT WETTER AND COOLER THAN MOST APRILS.
THE MONTH CONTINUED TO SEE RATHER PROGRESSIVE WEATHER PATTERN,
MAINTAINING SHOWERY AND COOL CONDITIONS THROUGH THE 23RD. AT THE
CLOSE OF THE MONTH, HIGH PRESSURE BROUGHT MILDER AIR AND A WELCOME
BREAK FROM THE CLOUDS AND PRECIPITATION. TEMPERATURES JUMPED WELL
ABOVE NORMAL 26TH TO 29TH. APRIL 2023 TOTAL RAINFALL OF 4.70 INCHES
MADE IT THE 14TH WETTEST APRIL.

MAY...AFTER A RATHER DANKISH AND DAMP SPRING, MAY BROUGHT MUCH
DELIGHT TO AREA GARDENERS, WITH WARM AND DRIER WEATHER. AN UPPER LOW
OVER THE REGION MAINTAINED COOL WEATHER FOR THE FIRST WEEK. THEN,
HIGH PRESSURE BUILT OVER THE PACIFIC NW BRINGING WARM AND DRY
CONDITIONS ALONG WITH OFFSHORE WINDS. WARMEST STRETCH WAS AROUND
MOTHERS DAY, INCLUDING A STREAK OF 9 CONSECUTIVE DAYS OF HIGHS ABOVE
80 DEGREES BEGAN ON THE 12TH. THE WARMEST DAY ON THE 14TH SET A
DAILY HIGH RECORD OF 94 DEG. FINISHED AS THE 2ND WARMEST MAY ON
RECORD, AS WELL AS THE 5TH DRIEST, RECORDING JUST 0.34 INCH OF
RAINFALL AT KEUG.

JUNE...THE DRY WEATHER OF MAY CONTINUED INTO JUNE. GENERALLY WAS A
WARM JUNE, BUT NO RECORD HIGHS THIS YEAR. STRONGEST FRONT OF THE
MONTH BROUGHT CLOUDS, RAIN AND COOL WEATHER FOR FATHERS DAY. A
STRONG UPPER LOW ARRIVED ON THE 18TH, BRINGING SHOWERS AND A FEW
COOLISH DAYS. TEMPERATURES RAMPED BACK UP ON THE 21ST WITH HIGHS
GENERALLY 80 TO 90 DEGREES THROUGH THE END OF THE MONTH. WARMEST DAY
OF THE MONTH WAS ON THE 30TH, WITH A HIGH OF 93 DEG.

JULY...WARM AND DRY WEATHER CONTINUED. DRIZZLE ON THE 10TH AND 25TH
WERE THE ONLY DROPS OF RAIN IN JULY FOR EUGENE, RECORDING A TOTAL OF
0.01 INCH. THE WARMEST DAY OF THE MONTH OCCURRED ON THE 15TH, WITH A
HIGH OF 100 DEG. THE HIGH OF 98 DEG ON THE 4TH MADE IT THE WARMEST
INDEPENDENCE DAY ON RECORD. JULY ENDED THE 6TH WARMEST JULY.

AUGUST...WARM AND DRY AS HIGH PRESSURE DOMINATED. IN FACT, IT WAS
THE WARMEST AUGUST ON RECORD. MULTI-DAY STRETCH OF HIGHS EXCEEDING
100 DEGREES THE 13TH TO 16TH. THE HOTTEST DAYS OF 105 DEG ON THE
15TH AND 16TH SET RECORD DAILY HIGHS. MOST OF THE MONTH WAS DRY,
EXCEPT LIGHT RAIN ON THE 24TH AND ON THE 28TH. BUT THAT ALL CAME TO
AN END AS AUGUST CLOSED WITH A MODESTLY STRONG FRONT, WITH COOLER
TEMPERATURES AND LIGHT RAIN.

SEPTEMBER...ACTIVE WEATHER CONTINUED IN EARLY SEPTEMBER. AN UNSTABLE
AIRMASS TRIGGERED SHOWERS AND THUNDERSTORMS THROUGH THE 3RD.
AFTERWARDS, SEASONABLY WARM WEATHER, BUT DRY. HIGHS GENERALLY 80 TO
90 THE 6TH TO 17TH. BUT, RETURN TO MORE ACTIVE WEATHER ARRIVED THE
23RD. COOLER AND WET THE LAST WEEK OF THE MONTH AS A SERIES OF
FRONTAL SYSTEMS MOVED ACROSS THE REGION. HIGHS IN THE 60S THE 24TH
TO 30TH WITH RAIN NEARLY EVERY DAY. TOTAL RAINFALL OF 1.66 INCHES
FOR THE MONTH ENDED SLIGHTLY ABOVE NORMAL.

OCTOBER...SEASONABLE WEATHER TO START THE MONTH, ALONG WITH A FRONT
THAT MOVED THROUGH ON THE 2ND. THEN, UNSEASONBLY WARM AND DRY THE
6TH TO 8TH WITH HIGHS IN THE 80S. AFTER THAT, A MORE TYPICAL FALL
WEATHER PATTERN ARRIVED. OCCASIONAL FRONTS BROUGHT RAIN AND
GRADUALLY COOLER TEMPERATURES TO THE REGION. HIGH PRESSURE AT THE
END OF THE MONTH BROUGHT DRY WEATHER AND MILD DAYS, ALONG WITH COOL
NIGHTS. CHILLY MORNINGS TO CLOSE OUT THE LAST FOUR DAYS OF THE MONTH
WITH LOWS 25 TO 30 DEG. TOTAL RAINFALL OF 2.75 INCHES FINISHED
SLIGHTLY BELOW NORMAL.

NOVEMBER...RATHER TYPICAL NOVEMBER WITH NEAR NORMAL TEMPERATURE, BUT
LESS RAINFALL THAN NORMAL. WARMER AND WET START TO THE MONTH AS A
STRONG PACIFIC JET KEPT ACTIVE WEATHER AROUND THROUGH THE 7TH.
RATHER POTENT FRONTS THE 4TH TO 6TH BROUGHT HEAVY RAIN AND
THUNDERSTORMS, WITH WINDS GUSTING TO 35 MPH. HIGH PRESSURE WAS
STRONG ENOUGH FOR A TIME TO BRING DRY WEATHER TO THE REGION FROM
23RD TO 29TH, MAKING FOR A RATHER PLEASANT THANKSGIVING BREAK.
CHILLY MORNINGS ALSO, WITH BELOW FREEZING LOWS 24TH THROUGH 29TH IN
THE 20S. TOTAL RAINFALL OF 3.39 INCHES WAS LESSS THAN 60% OF NORMAL.

DECEMBER...RAIN RETURNED WITH A VENGEANCE TO START THE MONTH. A
SERIES OF ATMOSPHERIC RIVERS BROUGHT HEAVY RAIN DURING THE FIRST
WEEK OF DECEMBER, WITH NEARLY 5 INCHES OF RAIN TO EUGENE. TIED
RECORD WARM HIGH ON THE 5TH (64 DEGREES).


==============================================================
NEW RECORDS SET IN 2023       (PREVIOUS RECORD IN PARENTHESES)
               + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES

JANUARY...
  12TH  NEW.  DAILY WARM HIGH TEMP           62  (  60 /2021 )

FEBRUARY...
  25TH  NEW.  DAILY COLD LOW TEMP            20  (  23 /2022+)

MARCH...
  27TH  NEW.  DAILY COOL HIGH TEMP           43  (  45 /1985 )

APRIL...      NO NEW RECORDS SET.

MAY...
  14TH  NEW.  DAILY WARM HIGH TEMP           94  (  92 /1939 )
  15TH  NEW.  DAILY WARM HIGH TEMP           89  (  87 /2006+)
   *** 2ND WARMEST MAY (AVG TEMP 61.1 DEG, +5.0 ABOVE NORMAL)

JUNE...       NO NEW RECORDS SET.

JULY...
   4TH  NEW.  DAILY WARM HIGH TEMP           98  (  95 /1972 )
   5TH  NEW.  DAILY WARM HIGH TEMP           99  (  97 /1960 )
   *** 5TH WARMEST JULY (AVG TEMP 70.8 DEG, +3.0 ABOVE NORMAL)

AUGUST...
   6TH  NEW.  DAILY WARM LOW TEMP            64  (  61 /2021 )
  10TH  TIED. DAILY WARM LOW TEMP            61  (  61 /1963 )
  14TH  NEW.  DAILY WARM LOW TEMP            64  (  62 /2001 )
  14TH  NEW.  DAILY WARM HIGH TEMP          103  ( 101 /2010 )
  15TH  NEW.  DAILY WARM LOW TEMP            64  (  63 /1901 )
  15TH  NEW.  DAILY WARM HIGH TEMP          105  ( 101 /2020 )
  16TH  NEW.  DAILY WARM LOW TEMP            65  (  64 /2020 )
  16TH  NEW.  DAILY WARM HIGH TEMP          105  ( 101 /1977 )
  17TH  NEW.  DAILY WARM LOW TEMP            66  (  62 /1933 )
  25TH  NEW.  DAILY WARM LOW TEMP            62  (  61 /2011 )
       MIN TEMP OF 67 ON THE 15TH WAS THE WARMEST EVER RECORDED
       IN AUGUST FOR AN OVERNIGHT MINIMUM AT EUGENE (PRIOR
       RECORD WAS 66 DEG, SET IN 2021).
   *** THE WARMEST AUGUST (AVG TEMP 72.5 DEG, +4.6 ABOVE NORMAL)

SEPTEMBER...  NO NEW RECORDS SET.

OCTOBER...
   6TH  NEW.  DAILY WARM HIGH TEMP           87  (  86 /1952 )

NOVEMBER...
   3RD  TIED. DAILY WARM LOW TEMP            55  (  55 /1965 )

DECEMBER...
   4TH  NEW.  DAILY WARM LOW TEMP            55  (  54 /1989 )
   5TH  NEW.  DAILY WARM LOW TEMP            55  (  50 /1897 )
   5TH  NEW.  DAILY WARM HIGH TEMP           64  (  60 /1944 )

===============================================================
2023 EUGENE MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS
THIS TABLE SHOWS WHERE EACH MONTH/YEAR RANKS IN EUGENE`S
CLIMATE RECORD (1892-2023). RANKINGS APPLY TO ALL OF THE
SAME MONTH:  EX. WHERE JUNE 2023 COMPARES TO ALL OTHER JUNES.

         JA  FE  MA  AP  MA  JU  JL  AU  SE  OC  NO  DE  2023
AVG T    46 116 119  59   2  10   5   1  25  22  67  XX    XX
PRECIP  113 112  60  17 127 126  98  65  50  62 110  XX    XX

MAX T    41  89 113  91   3   6   2   3  35  38  72  XX    XX
MIN T    50 125 118  21   2  51  22   1  20  26  64  XX    XX

EUGENE`S RANGE IS 1 TO 132, WHERE    1 = WARMEST OR WETTEST
                                   132 = DRIEST OR COLDEST

===============================================================
2023 EUGENE 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     48.4  35.0   41.7   +0.3 DEG     62 /12TH    21 /30TH
FEB     49.9  30.3   40.1   -3.2 DEG     64 / 9TH    20 /25TH
MAR     52.3  33.9   43.1   -3.8 DEG     63 /22ND    29 /16TH
APR     59.6  41.9   50.8   +0.1 DEG     87 /28TH    34 / 3RD
MAY     74.7  47.5   61.1   +5.0 DEG     94 /14TH    37 / 7TH
JUN     80.5  48.4   64.5   +3.6 DEG     93 /30TH    39 / 2ND
JUL     88.5  53.1   70.8   +3.0 DEG    100 /15TH    47 /31ST
AUG     87.9  57.1   72.5   +4.6 DEG    105 /16TH+   45 /23RD
SEP     77.5  49.9   63.7   +0.8 DEG     94 /15TH    40 /21ST
OCT     65.6  44.8   55.2   +1.8 DEG     87 / 6TH    25 /29TH
NOV     52.6  38.8   45.7   +0.2 DEG     65 / 2ND    22 /28TH
DEC     XX.X  XX.X   XX.X   XX.X DEG     XX /XXTH    XX /XXTH

2023    XX.X  XX.X   XX.X   XX.X DEG   105/AUG 16+   20/FEB 25
NORMAL  64.3  41.9   53.1

DAYS WITH TEMPERATURES IN 2023 WHERE...
       |------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---|
       <=32  60+  70+  80+  90+ 100+  <=20  <=32   60+   70+
--------------------------------------------------------------
JAN      0    1    0    0    0    0      0    11    0     0
FEB      0    1    0    0    0    0      1    17    0     0
MAR      0    4    0    0    0    0      0    13    0     0
APR      0   12    5    2    0    0      0     0    0     0
MAY      0   30   19   12    1    0      0     0    0     0
JUN      0   30   27   17    4    0      0     0    0     0
JUL      0   31   31   30   13    1      0     0    0     0
AUG      0   31   29   27   12    4      0     0   10     0
SEP      0   30   24   13    1    0      0     0    1     0
OCT      0   24    9    3    0    0      0     4    0     0
NOV      0    6    0    0    0    0      0     6    0     0
DEC      X    X    0    0    0    0      X    XX    0     0

2023     0  XXX  144  104   31    5      1    XX   11     0
NORMAL   2  201  128   66   15    1      2    51    2     0

FIRST/LAST OCCURRENCES OF...          IN 2023       NORMAL
  LAST 32 DEG OR COLDER IN SPRING      27 MAR      (13 APR)
  FIRST 70+ DEG OF THE YEAR            22 APR      (30 MAR)
  FIRST 80+ DEG OF THE YEAR            28 APR      (10 MAY)
  FIRST 90+ DEG OF THE YEAR            14 MAY      (25 JUN)

  LAST 90+ DEG OF THE YEAR             15 SEP      ( 7 SEP)
  LAST 80+ DEG OF THE YEAR              8 OCT      (29 SEP)
  LAST 70+ DEG OF THE YEAR             16 OCT      (21 OCT)
  FIRST 32 DEG OR COLDER OF AUTUMN     28 OCT      (22 OCT)

==============================================================
2023 EUGENE 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     2.83    -3.22      20   10    0    0    0.55 JAN  3-4
FEB     1.98    -2.69       9    7    0    0    0.60 FEB 27-28
MAR     4.50    -0.14      22   15    2    0    0.90 MAR 12-13
APR     4.70    +1.38      20   16    2    1    1.04 APR  9-10
MAY     0.34    -2.12       5    1    0    0    0.13 MAY  8
JUN     0.14    -1.09       2    1    0    0    0.12 JUN 18
JUL     0.01    -0.31       1    0    0    0    0.01 JUL 25
AUG     0.26    -0.13       4    1    0    0    0.15 AUG 31
SEP     1.66    +0.27       8    4    1    0    0.91 SEP 23-25
OCT     2.75    -0.42      10    8    2    0    0.86 OCT 24-25
NOV     3.39    -2.59      17   10    2    0    1.04 NOV  3-4
DEC     X.XX    XX.XX      XX   XX    X    X    2.11 DEC  2-3

  2023  XX.XX   XX.XX     XXX   XX   XX    X    2.11 DEC  2-3
NORMAL  40.83             146   90   26    7

EUGENE WATER YEAR 2022-23 (1 OCT 2022 THROUGH 30 SEP 2023)
      28.60 INCHES  ( 12.23 INCHES XXXXX NORMAL  )

TOTAL SNOWFALL FOR 2023...   2.2 INCHES    (AVERAGE: 5.8")

============================================================
2022 EUGENE WIND AND PRESSURE DATA...

      AVERAGE SPEED (MPH)    STRONGEST WIND GUST
MONTH   2023   NORMAL      DIRECTION   SPEED   DATE
----------------------------------------------------------
JAN      6.7    (6.8)       SOUTH       40 MPH  JAN 15
FEB      7.4    (7.1)       SOUTH       38 MPH  FEB 27
MAR      7.6    (7.4)       SOUTHWEST   37 MPH  MAR  7
APR      7.6    (7.1)       NORTHWEST   42 MPH  APR  3
MAY      6.0    (6.6)       SOUTHWEST   28 MPH  MAY  6
JUN      7.2    (7.0)       NORTH       31 MPH  JUN  4
JUL      6.5    (7.5)       NORTH       29 MPH  JUL  1
AUG      6.0    (7.1)       NORTHWEST   28 MPH  AUG  4
SEP      6.0    (6.8)       NORTHEAST   34 MPH  SEP 25
OCT      5.4    (6.4)       SOUTHWEST   33 MPH  OCT 25
NOV      5.1    (7.0)       SOUTHEAST   33 MPH  NOV 11
DEC      X.X    (7.1)       XXXXXXXXX   XX MPH  DEC XX

2023     X.X    (7.0)       SOUTHWEST   53 MPH  MAR 12

2023 BAROMETRIC PRESSURE EXTREMES...
   HIGHEST     30.72 INCHES     25 JAN ( 1054 AM PST )
   LOWEST       29.20 INCHES     14 DEC (  254 PM PST )

==============================================================
2023 LOCAL RIVER EXTREMES

WILLAMETE RIVER (NEAR EWEB BUILDING, DOWNTOWN EUGENE)...
   HIGHEST   15.7 FT     3 DEC     (FLOOD STAGE IS 23.0 FT)
   LOWEST     9.6 FT    21 AUG

WILLAMETTE (AT HARRISBURG)...
   HIGHEST   12.1 FT     4 DEC     (FLOOD STAGE IS 14.0 FT)
   LOWEST     1.7 FT    23 AUG

MOHAWK RIVER (AT HILL RD, NORTH OF SPRINGFIELD)...
   HIGHEST   14.5 FT     4 DEC     (FLOOD STAGE IS 15.0 FT)
   LOWEST     0.7 FT    17 SEP

=============================================================
EUGENE AIRPORT CLIMATE PERIOD OF RECORDS...   1892 TO 2023
EUGENE AIRPORT CLIMATE NORMALS...             1991 TO 2020
=============================================================

DATA COMPILED BY ROCKEY AND HARTSOCK

ADDITIONAL LOCAL CLIMATE DATA AVAILABLE ON OUR WEBSITE AT:
      HTTPS://WWW.WEATHER.GOV/WRH/CLIMATE?WFO=PQR


$$


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