Climatological Report (Annual)
Issued by NWS Portland, OR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8
078
CXUS56 KPQR 011951
CLAAST

ANNUAL CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
1151 AM PST FRI JAN 1 2021

...ASTORIA 2020 WEATHER IN REVIEW...
=================================================================

2020 KEY RECORDS HEADLINES...
     *** MANZANITA TORNADO (21 JAN)
     *** 10TH DRIEST APRIL
     ***  4TH WARMEST SEPTEMBER
     *** HEAVY RAINS 19-21 DECEMBER

2020 MONTHLY WEATHER RECAPS...

JANUARY...2020 STARTED ON A MILD AND WET NOTE. IT RAINED ON
     EVERY DAY OF THE MONTH. THE ONLY OTHER TIME IT RAINED ON
     EVERY DAY OF JANUARY WAS JANUARY 1964. RAIN FELL HEAVILY
     AT TIMES, WITH 1.00 INCH OR MORE ON 6 DAYS, THE MOST IN
     JANUARY SINCE 2007. THE HEAVIEST RAINS WERE ON THE 6TH,
     WHEN 2.50 TO 3.50 INCHES OF RAIN FELL ACROSS THE AREA.
     IT WAS RATHER COOL FROM 13TH INTO 14TH, WITH TEMPERATURES
     IN THE 30S. THERE WAS ALSO LIGHT SNOW AROUND THE ASTORIA
     AREA, WITH MOST AREAS GETTING 0.5 TO 1.0 INCH OF SNOW ON
     THE 14TH. ROUGH WEATHER AGAIN ON THE 21ST, WITH SHOWERS
     AND A FEW THUNDERSTORMS. ONE STORM PRODUCED A WATERSPOUT
     OFF THE COAST, WHICH BECAME A TORNADO AS IT MOVED ONSHORE
     JUST NORTH OF MANZANITA.

     OVERALL, TEMPERATURES ENDED NEAR NORMAL, BUT IT WAS THE
     15TH WETTEST JANUARY (SINCE 1851).

FEBRUARY...RATHER STRONG FRONT PUSHED ACROSS THE AREAS ON 1ST,
     WITH RAIN AND SOUTH WINDS GUSTS UP TO 55 MPH. IN ALL, IT
     WAS RELATIVELY NORMAL FEBRUARY FOR ASTORIA, BEING A BIT
     WET. HIGH PRESSURE FROM THE 18TH TO 21ST BROUGHT DRY
     AND MILD WEATHER, WITH HIGHS WELL INTO THE 50S.

MARCH...OVERALL, IT WAS ONE OF THE COOLEST MARCH IN SOMETIME,
     THE COOLEST SINCE 1985. IT TURNED MILDER A BIT AROUND
     MID-MONTH, WITH HIGHS BACK INTO THE MIDDLE 50S. BUT, IT
     WAS STILL SOMEWHAT CHILLY AT NIGHT, WITH LOWS IN THE
     LOWER 30S. CHILLIEST WAS ON THE 17TH, WITH AN OVERNIGHT
     LOWS IN THE UPPER 20S. MILDER WEATHER WITH MORE CLOUDS,
     AND RAIN, RETURNED ON THE 22ND, AND LASTED THROUGH 31ST.

APRIL...STARTED WET AND NORMAL, THEN TURNED MOSTLY DRY AND
     MILD ON 6TH, LASTING THROUGH THE 17TH. DURING THIS TIME,
     TEMPERATURES WARMED INTO THE 50S AND 60S, WITH WARMEST
     DAY BEING THE 16TH WITH A HIGH OF 70 DEG. RAIN RETURNED
     ON THE 21ST, WITH RAIN TIMES THROUGH END OF THE MONTH.
     APRIL 2020 ENDED WITH ONLY 37% OF ITS NORMAL RAINFALL,
     MAKING IT THE 10TH DRIEST APRIL ON RECORD (SINCE 1851).

MAY...NEAR NORMAL RAINFALL WITH ABOVE NORMAL TEMPERATURES.
     IT RAINED ON 20 DAYS IN MAY 2020, THE MOST IN MAY SINCE
     SINCE MAY 2010. BUT, MOST OF THE DAILY RAINFALL WERE
     LESS THAN A 0.20 INCH.  HIGH PRESSURE OVER THE INLAND
     PACIFIC NORTHWEST BROUGHT WARM EAST WINDS TO THE COAST
     ON THE 7TH TO THE 9TH, WITH TEMPERATURES REACHING WELL
     THE 70S, WITH WARMEST DAY BEING THE 8TH WITH 82 DEG.
     AFTERWARDS, IT WAS BACK TO TYPICAL SPRING WEATHER WITH
     OCCASIONAL RAIN. ANOTHER BRIEF WARM-UP OCCURED ON THE
     27TH AND 28TH, WITH HIGHS IN THE 70S.

JUNE...SPEAKING OF TRANSITION MONTHS, JUNE WAS JUST THAT, WITH
     MOSTLY MILD WEATHER, BUT RAIN AT TIMES. THOUGH THE DAILY
     MAXIMUM TEMPERATURES WERE MOSTLY IN THE 60S, IT DID WARM
     INTO THE 70S AT TIMES BETWEEN THE 18TH AND 23RD.

JULY...THIS WAS A UNEVENTFUL JULY, WITH MILD TEMPERATURES.
     TOTAL RAINFALL WAS ABOUT HALF OF NORMAL, WITH 0.47 INCH.

AUGUST...LIKE JULY, AUGUST WAS RATHER UNEVENTFUL. DAILY HIGH
     TEMPERATURES WERE MOSTLY IN THE UPPER 60S TO LOWER 70S.
     THE EXCEPTION WAS THE 15TH AND 16TH, WITH HIGHS WARMING
     INTO THE 80S. TOTAL RAINFALL WAS ABOUT HALF OF NORMAL.

SEPTEMBER...THE MONTH STARTED WARM AND DRY, WITH DAILY HIGHS
     IN THE 70S AND 80S. STRONG HIGH PRESSURE INLAND BROUGHT
     DRY GUSTY EAST WINDS TO THE REGION ON LABOR DAY WEEKEND.
     BUT, THESE WINDS CONTRIBUTED TO LARGE WILDFIRES IN THE
     CASCADES, AND EVEN SOME WILDFIRES IN THE COAST RANGE.
     THOUGH ASTORIA WAS NOT DIRECTLY AFFECTED BY WILDFIRES,
     THE SMOKE THAT CAME FROM THESE FIRES HUNG IN THE SKIES
     FOR DAYS, MAKING FOR POOR AIR QUALITY AT TIMES, AS WELL
     AS COOLER TEMPERATURES.

     SHOWERS AND A FEW THUNDERSTORMS ROLLED NORTHWARD ACROSS
     NORTHWEST OREGON ON THE 17TH INTO THE 18TH. MOST AREAS
     RECEIVED 0.50 TO 1 INCH OF RAIN, THOUGH A FEW SPOTS IN
     THE COAST RANGE GOT 1 TO 2 INCHES OF RAIN.  AFTERWARDS,
     WEATHER PATTERN CHANGED, WITH MORE ONSHORE FLOW. THIS
     ALLOWED SMOKE TO BE SHUNTED BACK TO THE EAST. ANOTHER
     STRONG FRONT ARRIVED ON THE 23RD, BRINGING 1 TO 3 INCHES
     OF RAIN TO MUCH OF THE COASTAL REGION.

     SEPTEMBER 2020 MEAN TEMPERATURE OF 62.3 DEG MAKES SEPT
     2020 AS THE 4TH WARMEST SEPTEMBER ON RECORD (SINCE 1851).

OCTOBER...AFTER A MILD AND DRY START, THE TRANSITION FROM LATE
     SUMMER-LIKE WEATHER TO AUTUMN BEGAN IN EARNEST BY THE 9TH.
     A SERIES OF FRONTS ARRIVED, WITH RAIN ON NEARLY EVERY DAY
     FROM 9TH TO 23RD. STRONGEST FRONT WAS ON THE 10TH INTO
     THE 11TH, WITH 1 TO 2 INCHES OF RAIN ALONG WITH SOUTH
     WINDS GUSTING UP TO 50 MPH.

NOVEMBER...NOVEMBER 2020 WAS ABOUT AS CLOSE TO NORMAL AS WOULD
     EXPECT FOR A NOVEMBER. THE STRONGEST FRONT ARRIVED ON THE
     13TH INTO THE 14TH, BRINGING 2 TO 4 INCHES OF RAIN TO THE
     ASTORIA REGION, ALONG WITH SOUTH WINDS GUSTING 45 TO 60
     MPH. THESE WINDS CAUSED SOME TREE DAMAGE AND SPOTTY POWER
     OUTAGES.

DECEMBER...DECEMBER STARTED ON A DRY NOTE. BUT, THEN THE RAIN
     RETURNED, WITH RAIN EVERY DAY FROM THE 5TH THROUGH 22ND.
     AN ATMOSPHERIC RIVER ARRIVED LATER ON THE 19TH AND 20TH,
     BRINGING HEAVY RAIN. DURING THAT TIME, MANY AREAS IN AND
     AROUND ASTORIA RECEIVED 2.50 TO 3.50 INCHES OF RAIN. BUT,
     AREAS IN THE COAST RANGE REPORTED 4 TO 6 INCHES OF RAIN.
     MANY OF THE SMALLER STREAMS RAN FULL WITH MINOR FLOODING
     IN SPOTS. SEVERAL OF THE LARGER COASTAL RIVERS HAD MINOR
     FLOODING, MAINLY ALONG THE GRAYS AND WILSON RIVERS.
     MILD AND WET CONDITIONS CONTINUE THROUGH END OF DECEMBER.

=============================================================
NEW RECORDS SET IN 2020      (PREVIOUS RECORD IN PARENTHESES)
              + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES

JANUARY...
   3RD NEW.   DAILY WARM HIGH TEMP          61  (  59 /1984 )
  23RD NEW.   DAILY WARM LOW TEMP           51  (  50 /1992 )
  31ST TIED.  DAILY WARM LOW TEMP           52  (  52 /1995 )
   *** TIES 1964 WITH MOST RAINY DAYS IN JAN (31 DAYS).

MAY...
   8TH TIED.  DAILY WARM LOW TEMP           53  (  53 /1989+)
   8TH NEW.   DAILY WARM HIGH TEMP          82  (  75 /2015+)
   9TH NEW.   DAILY WARM LOW TEMP           53  (  52 /2018 )

AUGUST...
  13TH NEW.   DAILY COLD LOW TEMP           44  (  45 /1955+)

SEPTEMBER...
  15TH TIED.  DAILY WARM LOW TEMP           60  (  60 /1917 )
  16TH NEW.   DAILY WARM LOW TEMP           60  (  58 /1995+)
  *** 4TH WARMEST SEPTEMBER (SINCE 1850)

OCTOBER...
  22ND TIED.  DAILY COLD LOW TEMP           34  (  34 /1961+)

NOVEMBER...
   4TH NEW.   DAILY WARM LOW TEMP           57  (  55 /2006 )
   8TH NEW.   DAILY COLD LOW TEMP           28  (  29 /1977 )
   9TH NEW.   DAILY COLD LOW TEMP           27  (  29 /1978 )

DECEMBER...
   5TH NEW.   DAILY WARM HIGH TEMP          61  (  59 /1908 )

==============================================================
2020 ASTORIA MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS

THIS SHOWS WHERE A MONTH/YEAR RANKS IN SALEM PERIOD OF RECORD
(1850 TO 2020). RANKINGS ONLY APPLY TO ALL OF THE SAME MONTH,
IN OTHER WORDS, WHERE JAN 2020 COMPARES TO ALL OTHER JANUARYS.

RANKINGS 1 TO 171...WHERE 1 IS THE RECORD WARMEST OR WETTEST,
                    AND 171 IS THE RECORD DRIEST OR COLDEST.
          (NOTE:  FOR MAX T AND MIN T, RANKINGS 1 TO 134)

       JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC  2020
AVG T   16  99 133  89  27  75 103  68   4  91 107  35    44
PRECIP  15  92 132 152  68  86 111 117  75 106  93 127   116

MAX T   30  76 109  45  27  82 100  43  18  86  70  19    36
MIN T    7  92 118 104  23  57  76  83   3  77 107  47    46

===============================================================

2020 ASTORIA AIRPORT TEMPERATURE DATA
     + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES

      |--- AVERAGES ----| MEAN T DEPART| EXTREME TEMPS/DATE
MONTH |HIGHS LOWS   MEAN|  FROM NORMAL | HIGHEST     LOWEST
--------------------------------------------------------------
JAN     50.2  41.2   45.7   +1.9 DEG     61 / 3RD    31 /17TH+
FEB     49.5  35.6   42.6   -1.8 DEG     57 /20TH    27 /21ST
MAR     50.3  35.8   43.1   -3.3 DEG     57 /20TH    29 /17TH+
APR     57.2  39.9   48.5   -0.2 DEG     70 /16TH    30 /13TH
MAY     62.7  47.7   55.2   +2.2 DEG     82 / 8TH    37 / 7TH
JUN     64.4  50.5   57.5   +0.5 DEG     76 /23RD    41 / 1ST
JUL     67.1  53.0   60.0   -0.3 DEG     83 /26TH    47 /13TH
AUG     70.0  53.1   61.5   +0.6 DEG     86 /15TH    44 /13TH
SEP     70.1  54.5   62.3   +3.8 DEG     87 / 9TH    49 / 6TH+
OCT     60.2  45.3   52.8   +0.2 DEG     73 / 6TH    33 /26TH+
NOV     53.5  38.6   46.1   -0.7 DEG     64 / 1ST    27 / 9TH
DEC     51.0  38.6   44.8   +2.1 DEG     61 / 5TH    29 /12TH

  2020  58.8  44.5   51.7   +0.4 DEG   87 /AUG 9   27 /NOV 9+
NORMAL  58.6  43.9   51.3

DAYS WITH TEMPERATURES IN 2020 WHERE...
       |------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---|
       <=32  60+  70+  80+  90+ 100+  <=20  <=32   50+   60+
--------------------------------------------------------------
JAN      0    1    0    0    0    0      0     5    2     0
FEB      0    0    0    0    0    0      0     7    0     0
MAR      0    0    0    0    0    0      0     9    0     0
APR      0    7    1    0    0    0      0     3    1     0
MAY      0   20    5    1    0    0      0     0   11     0
JUN      0   28    4    0    0    0      0     0   18     0
JUL      0   31    5    1    0    0      0     0   25     0
AUG      0   31   13    2    0    0      0     0   27     0
SEP      0   29   12    6    0    0      0     0   28     4
OCT      0   18    2    0    0    0      0     0   12     0
NOV      0    4    0    0    0    0      0     3    1     0
DEC      0    1    0    0    0    0      0     5    0     0

  2020   0  170   42   10    0    0      0    32  125     4
NORMAL  <1  160   33    4    0    0      1    28  102     2

FIRST/LAST OCCURRENCES OF...        IN 2020        NORMAL
  LAST 32 DEG OR COLDER IN SPRING    13 APR       ( 7 APR)
  FIRST 70+ DEG OF THE YEAR          16 APR       (12 APR)
  FIRST 80+ DEG OF THE YEAR           8 MAY       (13 JUN)
  FIRST 90+ DEG OF THE YEAR           NONE        ( 3 JUL)

  LAST 90+ DEG OF THE YEAR            NONE        (14 JUL)
  LAST 80+ DEG OF THE YEAR           29 SEP       (11 SEP)
  LAST 70+ DEG OF THE YEAR            6 OCT       (15 OCT)
  FIRST 32 DEG OR COLDER IN FALL      8 NOV       ( 6 NOV)

==============================================================
2020 ASTORIA 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    18.14    +7.94      31   30   13    6    2.81 JAN  5-6
FEB     6.90    -0.29      18   11    6    2    2.67 FEB  4-5
MAR     5.04    -2.41      19   15    2    0    0.75 MAR 28-29
APR     1.97    -3.23      15    6    1    0    0.71 APR 24-25
MAY     3.55    +0.23      20   14    1    0    0.87 MAY  2-3
JUN     2.38    -0.17      17   10    0    0    0.68 JUN  8-9
JUL     0.47    -0.56      11    2    0    0    0.14 JUL  1
AUG     0.50    -0.66       9    2    0    0    0.24 AUG 20-21
SEP     2.92    -0.78       8    5    2    1    1.69 SEP 23
OCT     4.52    -1.46      12   11    3    1    1.12 OCT 11
NOV     9.96    -1.19      23   19    7    3    1.54 NOV 12-13
DEC     8.19    -1.70      22   18    6    3    X.XX DEC XX

 2020  64.54    -2.72     205  143   41   16    2.81 JAN 5-6
NORMAL 67.26              191  128   45   14

ASTORIA WATER YEAR 2019-20 ( 1 OCT 2019 THROUGH 30 SEP 2020)
     61.58 INCHES   ( 5.68 INCHES BELOW NORMAL)

============================================================
2020 ASTORIA AIRPORT WIND AND PRESSURE DATA...

     AVERAGE SPEED (MPH)     STRONGEST WIND GUST (MPH)
        2020   NORMAL        DIRECTION   SPEED    DATE
------------------------------------------------------------
JAN     11.6    (8.8)        WEST        48 MPH   11 JAN
FEB      7.4    (8.4)        WEST        53 MPH    7 FEB
MAR      7.4    (8.3)        SOUTH       42 MPH   30 MAR
APR      6.9    (8.2)        SOUTH       36 MPH   22 APR
MAY      7.4    (8.1)        SOUTH       34 MPH   12 MAY
JUN      7.6    (8.3)        SOUTH       39 MPH    9 JUN
JUL      7.4    (8.5)        NORTHWEST   28 MPH   14 JUL
AUG      8.1    (7.7)        SOUTHWEST   35 MPH   16 AUG
SEP      6.9    (7.0)        SOUTH       47 MPH   25 SEP
OCT      6.7    (7.1)        SOUTH       48 MPH   13 OCT
NOV      7.5    (8.3)        SOUTH       56 MPH   17 NOV
DEC      X.X    (8.7)        SOUTH       52 MPH   21 DEC

2020     7.7    (8.0)        SOUTH       56 MPH   17 NOV

BAROMETRIC PRESSURE EXTREMES...
   HIGHEST PRESSURE30.62 INCHES     24 FEB
   LOWEST PRESSURE 29.22 INCHES     13 NOV

============================================================
ASTORIA AREA CLIMATE PERIOD OF RECORDS...   1850 TO 2020
ASTORIA CLIMATE NORMALS BASED ON...    1981 TO 2010
============================================================

DATA COMPILED BY ROCKEY
NATIONAL WEATHER SERVICE PORTLAND OREGON

ONLINE AT:     WEATHER.GOV/PORTLAND


$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.