Climatological Report (Annual)
Issued by NWS Portland, OR
Issued by NWS Portland, OR
000 CXUS56 KPQR 021855 CLAEUG ANNUAL CLIMATE REPORT NATIONAL WEATHER SERVICE PORTLAND OR 1049 AM PST SUN 2 JAN 2022 ...EUGENE 2021 WEATHER IN REVIEW... =============================================================== 2021 NOTABLE RECORDS... 2021 NOTABLE WEATHER EVENTS... *** TIED WARMEST JUNE *** MAJOR HEAT WAVE OF LATE JUNE *** 2ND WARMEST JULY *** HEAT WAVE OF MID-AUGUST *** 3RD WARMEST AUGUST *** WARMEST SUMMER ON RECORD *** 8TH WARMEST NOVEMBER *** HEAVY RAIN MID-NOVEMBER *** MOST DAYS W/HIGHS 90+ *** HEAVY RAIN MID-DECEMBER *** SNOW IN LATE DECEMBER *** 3RD WARMEST YEAR (ONLY 2015 AND 1934 WERE WARMER) MONTHLY WEATHER SUMMARIES... JANUARY...2021 STARTED WET AND MILD. RAINFALL OF 5.66 INCHES WAS SLIGHTLY BELOW NORMAL. THE MEAN TEMPERATURE OF 44.6 DEG WAS THE 9TH WARMEST ON RECORD. FEBRUARY...MILD AND WET WEATHER CONTINUED INTO EARLY FEBRUARY. THEN SOME COLDER WEATHER THE 10TH TO 12TH, BUT ONLY A TRACE OF SNOW. MILD WEATHER RETURNED TO THE REGION ON THE 13TH, AND LASTED THROUGH THE END OF FEBRUARY. RAINFALL OF 3.91 INCHES WAS SLIGHTLY BELOW NORMAL. MARCH...BEGAN THE MONTH WITH MILD AND DRY WEATHER WITH TEMPERATURES IN THE 60S. THE REMAINDER OF THE MONTH WAS SOMEWHAT COOLER WITH OCCASIONAL SHOWERS. RAINFALL OF 1.68 INCHES WAS TIED FOR THE 8TH DRIEST ON RECORD. 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. IN FACT, THE TOTAL RAINFALL FOR THE MONTH OF 0.35 INCH WAS THE DRIEST ON RECORD. AFTERNOON TEMPERATURES WERE OFTEN IN THE 60S AND 70S. THE WARMEST DAYS WERE 17TH/18TH, WHEN TEMPERATURES REACHED INTO THE LOWER 80S. MAY...THE FIRST DAY OF MAY SAW MORE RAIN THAN THE ENTIRE MONTH OF APRIL. BUT OVERALL, MAY WAS STILL RATHER DRY AND MILD WITH ABOUT HALF THE RAIN THAT IS NORMAL. MID MONTH SAW A WARM STRETCH OF DAYS (12TH TO 16TH), BUT THE WARMEST PERIOD CAME AT THE END OF THE MONTH AS TEMPERATURES CLIMBED TO THE UPPER 80S. JUNE...JUNE STARTED WARM AND DRY WITH HIGHS IN THE LOWER 90S ON THE 1ST AND 2ND. THEN, WEATHER RESEMBLED THAT MORE LIKE ANY OTHER JUNE, WITH CLOUDS, RAIN, AND VARIABLE TEMPERATURES. HIGH PRESSURE THEN BUILT OVER THE REGION, BRINGING DRY AND WARMER WEATHER. TEMPERATURES ROSE INTO THE 90S BY THE 20TH, WITH 95 DEG ON THE 21ST. HIGH PRESSURE WEAKEND A BIT, WITH TEMPERATURES BACK TO THE MID 80S. BUT, THAT HIGH PRESSURE DOME PUSHED BACK OVER THE PACIFIC NW ON THE 25TH, BRING VERY HOT WEATHER. TEMPERATURES ROSE TO 103 ON THE 26TH, THEN TO A RECORD-BREAKING 111 ON THE 27TH. THIS WAS THE HOTTEST DAY EVER RECORDED IN EUGENE (BACK TO 1890). THE ELDERLY AND VERY YOUNG, ALONG WITH THOSE THAT HAD NO AIR CONDITIONING, SUFFERED DURING THIS HEAT WAVE. HUNREDS SUFFERED FROM VARIOUS HEAT SICKNESSES AND NEEDED TO BE HOSPITALIZED. JULY...WARM AND DRY WEATHER CONTINUED, WITH ONLY 0.01 INCH OF RAIN. THERE WERE 18 DAYS WITH HIGH TEMPERATURE OF AT LEAST 90 DEG, WITH THE WARMEST BEING 99 DEG ON THE 29TH. JULY 2021 ENDED AS THE 2ND WARMEST JULY ON RECORD. AUGUST...WHILE NOT AS WARM AS JULY OR LATE JUNE, IT STILL FELT RATHER WARM. ANOTHER ROUND OF HOT TEMPERATURES MID MONTH, WITH 102 ON THE 11TH AND 104 ON THE 12TH. AFTER THE HEAT WAVE ENDED ON THE 15TH, TEMPERATURES WERE MORE TYPICAL FOR AUGUST, WITH 70S AND 80S. EVEN SO, IT WAS THE 3RD WARMEST AUGUST ON RECORD. SEPTEMBER...WAS A MILD MONTH, WITH TEMPERATURES SLIGHTLY WARMER THAN NORMAL. FIRST HALF OF THE MONTH WAS DRY BEFORE RAIN ARRIVED ON THE 17TH, WITH RATHER HEAVY RAIN ON THE 18TH. THE RAINFALL TOTAL OF 1.48 INCHES ON THE 18TH WAS THE 2ND WETTEST SEPTEMBER DAY ON RECORD. AS SUMMER CLOSED ON THE 20TH, 2021 WOULD FINISH AS THE WARMEST SUMMER ON RECORD, SURPASSING PRIOR WARMEST 2014. OCTOBER...IT WAS AN OCTOBER THAT IS MORE EXPECTED, WITH COOL SWEATER WEATHER AND SOME RAIN FROM TIME TO TIME. WHILE THERE WERE NOT BIG RAIN EVENTS, THE MONTHLY RAINFALL OF 2.74 INCHES WAS SLIGHTLY BELOW NORMAL. NOVEMBER...RAINS CONTINUED THROUGH THE MONTH, ALONG WITH MILD TEMPERATURES. ON THE 10TH AND 11TH, A RATHER SLOW MOVING ATMOSPHERIC RIVER SHIFTED FROM SOUTHWARD ACROSS THE REGION. DECEMBER...MILD WEATHER OF LATE NOVEMBER EXTENDED INTO EARLY DAYS OF DECEMBER, WITH TEMPERATURES INTO THE MID 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. HEAVY RAIN FELL ON THE 19TH, AS A FRONT STALLED OVER THE AREA. COLDER WEATHER SPREAD ACROSS THE REGION, WITH SNOW ON CHRISTMAS NIGHT INTO THE 27TH. SNOWFALL WAS 8 TO 10 INCHES ACROSS THE EUGENE AREA. COOL, SHOWERY WEATHER CONTINUED TO CLOSE OUT THE MONTH. ============================================================= NEW RECORDS SET IN 2021 (PREVIOUS RECORD IN PARENTHESES) + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES JANUARY... 12TH NEW. DAILY WARM LOW TEMP 52 ( 51 /1991 ) APRIL... 11TH NEW. DAILY COLD LOW TEMP 30 ( 31 /1891 ) 16TH TIED. DAILY WARM HIGH TEMP 80 ( 80 /1897 ) 17TH NEW. DAILY WARM HIGH TEMP 83 ( 80 /1939 ) **** APRIL 2021 WAS THE DRIEST APRIL ON RECORD WITH 0.35" (PRIOR RECORD DRIEST WAS 0.49" IN APR 1985). JUNE... 26TH NEW. DAILY WARM HIGH TEMP 103 ( 98 /2015 ) 27TH NEW. DAILY WARM LOW TEMP 66 ( 64 /2015 ) 27TH NEW. DAILY WARM HIGH TEMP 111 ( 98 /2015 ) 28TH TIED. DAILY WARM LOW TEMP 61 ( 61 /2015 ) **** HIGH OF 111 IS HIGHEST TEMPERATURE EVER RECORDED AT EUGENE. PRIOR TO 2021, THE HIGHEST WAS 108 DEG RECORDED ON 9 AUG 1981. **** JUNE 2021 TIED JUNE 2015 AS WARMEST JUNE ON RECORD, WITH AVERAGE TEMP OF 67.2 DEG. JULY... 31ST NEW. DAILY WARM LOW TEMP 66 ( 59 /1974+) **** 2ND WARMEST JULY ON RECORD, WITH AVERAGE TEMP 71.4 DEG (RECORD WARMEST IS JUL 2015 WITH AVG TEMP 71.5 DEG) AUGUST... 2ND TIED. DAILY WARM LOW TEMP 64 ( 64 /2003 ) 11TH NEW. DAILY WARM LOW TEMP 64 ( 61 /1990 ) 12TH TIED. DAILY WARM LOW TEMP 66 ( 66 /1992 ) 12TH NEW. DAILY WARM HIGH TEMP 104 ( 102 /1977 ) 13TH NEW. DAILY WARM LOW TEMP 66 ( 62 /1992 ) 14TH TIED. DAILY WARM LOW TEMP 62 ( 62 /2008 ) **** 3RD WARMEST AUG ON RECORD, WITH AVERAGE TEMP 70.8 DEG (RECORD WARMEST IS AUG 1967 WITH AVG TEMP 72.0 DEG) SEPTEMBER... 26TH TIED. DAILY WARM LOW TEMP 57 ( 57 /2010+) 18TH NEW. DAILY RAINFALL 1.48" (1.14"/2020 ) NOVEMBER... 11TH TIED. DAILY WARM LOW TEMP 53 ( 53 /2006+) 12TH TIED. DAILY WARM LOW TEMP 57 ( 57 /1999+) DECEMBER... 26TH NEW. DAILY SNOWFALL 8.2" ( 0.2"/1954 ) 8.2 INCHES ON 26TH IS MOST SNOW ON ANY DECEMBER DAY (PRIOR RECORD WAS 7.0 INCHES ON 6 DEC 2013) FOR THE YEAR... MOST DAYS WITH HIGH TEMPERATURE 90+ DEG... 42 DAYS (PRIOR RECORD 2014 WITH 36 DAYS) MOST DAYS WITH LOW TEMPERATURE 60+ DEG... 15 DAYS (PRIOR RECORD 1914 WITH 13 DAYS) WARMEST SUMMER ON RECORD...SURPASSING 2014 3RD WARMEST YEAR ON RECORD...TIES 1992 AS 3RD WARMEST. (ONLY 2015 AND 1934 WERE WARMER) =============================================================== 2021 EUGENE MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS THIS SHOWS WHERE A MONTH/YEAR RANKS IN PERIOD OF RECORD (1892 TO 2021). RANKINGS ONLY APPLY TO ALL OF THE SAME MONTH, IN OTHER WORDS, WHERE JAN 2021 COMPARES TO ALL OTHER JANUARYS. RANKINGS 1 TO 131, WHERE 1 IS THE RECORD WARMEST OR WETTEST, AND 131 IS THE RECORD DRIEST OR COLDEST. JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2021 AVG T 11 47 76 30 35 1 2 3 17 60 9 57 3 PRECIP 68 80 123 131 93 45 97 107 10 65 78 20 89 MAX T 9 83 51 5 18 2 1 7 22 90 11 70 5 MIN T 15 32 110 114 78 4 12 2 26 34 12 40 9 =============================================================== 2021 EUGENE 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 50.9 38.2 44.6 +3.9 DEG 61 /13TH 26 /23RD FEB 50.0 36.9 43.4 +0.5 DEG 61 /28TH 29 /10TH MAR 56.2 34.6 45.4 -1.3 DEG 66 /31ST 28 /16TH APR 67.6 37.1 52.4 +2.2 DEG 83 /17TH 28 / 5TH MAY 71.0 43.0 57.0 +0.9 DEG 88 /31ST 34 / 8TH JUN 82.4 52.0 67.2 +6.3 DEG 111 /27TH 37 / 9TH JUL 88.9 53.9 71.4 +3.6 DEG 99 /29TH 48 / 9TH AUG 86.5 55.2 70.8 +2.9 DEG 104 /12TH 45 /24TH SEP 79.1 49.4 64.2 +1.3 DEG 91 / 8TH 44 /17TH+ OCT 62.5 44.3 53.4 +0.0 DEG 73 / 3RD 32 /12TH NOV 56.4 41.9 49.2 +3.7 DEG 66 /14TH+ 28 /22ND DEC 46.6 36.5 41.6 +1.0 DEG 66 / 1ST 22 /27TH 2021 66.6 43.6 55.1 +1.9 DEG 111/JUN 27 22/DEC 27 NORMAL 64.3 42.0 53.2 DAYS WITH TEMPERATURES IN 2021 WHERE... |------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---| <=32 60+ 70+ 80+ 90+ 100+ <=20 <=32 60+ 70+ -------------------------------------------------------------- JAN 0 2 0 0 0 0 0 7 0 0 FEB 0 1 0 0 0 0 0 7 0 0 MAR 0 9 0 0 0 0 0 10 0 0 APR 0 23 12 4 0 0 0 4 0 0 MAY 0 30 17 6 0 0 0 0 0 0 JUN 0 30 25 19 9 2 0 0 6 0 JUL 0 31 31 29 18 0 0 0 2 0 AUG 0 31 31 22 12 2 0 0 7 0 SEP 0 30 27 15 3 0 0 0 0 0 OCT 0 21 4 0 0 0 0 1 0 0 NOV 0 10 0 0 0 0 0 3 0 0 DEC 0 1 0 0 0 0 0 8 0 0 2021 0 219 147 95 42 4 0 40 15 0 NORMAL 2 195 123 58 14 1 3 51 2 0 FIRST/LAST OCCURRENCES OF... IN 2021 NORMAL LAST 32 DEG OR COLDER IN SPRING 11 APR (20 APR) FIRST 70+ DEG OF THE YEAR 1 APR (30 MAR) FIRST 80+ DEG OF THE YEAR 16 APR (15 MAY) FIRST 90+ DEG OF THE YEAR 1 JUN (25 JUN) LAST 90+ DEG OF THE YEAR 8 SEP (11 SEP) LAST 80+ DEG OF THE YEAR 25 SEP (29 SEP) LAST 70+ DEG OF THE YEAR 28 OCT (21 OCT) FIRST 32 DEG OR COLDER IN FALL 12 OCT (20 OCT) ============================================================== 2021 EUGENE 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 5.66 -1.21 21 14 3 1 2.53 JAN 11-12 FEB 3.91 -1.52 17 10 2 0 0.98 FEB 12-13 MAR 1.68 -3.31 16 5 0 0 0.38 MAR 5 APR 0.35 -2.98 7 1 0 0 0.20 APR 23-24 MAY 1.28 -1.18 10 4 0 0 0.49 MAY 1 JUN 1.60 +0.37 6 4 2 0 1.26 JUN 12-13 JUL 0.01 -0.31 1 0 0 0 0.01 JUL 7 AUG TRACE -0.39 0 0 0 0 T AUG 1 SEP 2.55 +1.16 6 4 1 1 1.48 SEP 18 OCT 2.74 -0.43 16 9 1 0 0.90 OCT 21-22 NOV 5.19 -0.79 19 12 4 1 1.61 NOV 10-11 DEC 11.13 +3.92 23 15 9 5 2.42 DEC 18-19 2021 36.10 -4.73 142 78 22 8 2.53 JAN 11-12 NORMAL 40.83 144 93 30 10 EUGENE WATER YEAR 2019-20 (1 OCT 2020 THROUGH 30 SEP 2021) 30.34 INCHES 10.49 INCHES BELOW NORMAL TOTAL SNOWFALL FOR 2021... 10.1" (NORMAL: 6.0") ============================================================ 2021 EUGENE AIRPORT WIND AND PRESSURE DATA... AVERAGE SPEED (MPH) STRONGEST WIND GUST MONTH 2021 NORMAL DIRECTION SPEED DATE ---------------------------------------------------------- JAN 7.1 (6.8) WEST 36 MPH JAN 13 FEB 7.4 (7.1) SOUTH 42 MPH FEB 2 MAR 6.4 (7.4) SOUTH 38 MPH MAR 8 APR 7.2 (7.1) NORTH 36 MPH APR 13 MAY 6.6 (6.6) NORTH 29 MPH MAY 28+ JUN 7.1 (7.0) SOUTHWEST 36 MPH JUN 28 JUL 7.0 (7.5) NORTH 37 MPH JUL 13 AUG 7.5 (7.1) NORTH 32 MPH AUG 27 SEP 7.1 (6.8) SOUTHWEST 30 MPH SEP 26 OCT 6.6 (6.4) SOUTH 39 MPH OCT 24 NOV 6.4 (7.0) WEST 37 MPH NOV 6 DEC 8.2 (7.1) SOUTH 37 MPH DEC 11 2021 6.9 (7.0) SOUTH 42 MPH FEB 2 2021 BAROMETRIC PRESSURE EXTREMES... HIGHEST 30.59 INCHES 24 FEB ( 1106 AM PST ) LOWEST 29.06 INCHES 24 OCT ( 0701 AM PST ) ============================================================== 2021 LOCAL RIVER EXTREMES WILLAMETE RIVER (NEAR EWEB BUILDING, DOWNTOWN EUGENE)... HIGHEST 14.4 FT 4 JAN (FLOOD STAGE IS 23.0 FT) LOWEST 9.5 FT 24 AUG WILLAMETE RIVER (AT HARRISBURG)... HIGHEST 9.7 FT 5 JAN (FLOOD STAGE IS 14.0 FT) LOWEST 1.6 FT 20 AUG MOHAWK RIVER (AT HILL RD, NORTH OF SPRINGFIELD)... HIGHEST 10.6 FT 13 JAN (FLOOD STAGE IS 15.0 FT) LOWEST 0.7 FT 10 SEP ============================================================= EUGENE AIRPORT CLIMATE PERIOD OF RECORDS... 1892 TO 2021 EUGENE AIRPORT CLIMATE NORMALS... 1991 TO 2020 ============================================================= DATA COMPILED BY ROCKEY AND HARTSOCK NATIONAL WEATHER SERVICE PORTLAND OREGON ONLINE AT: WEATHER.GOV/PORTLAND $$