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Monthly climate reports
[Back to monthly climate reports page] [Daily date F-6] [Temperature graph]
June 2005 climate report for Tucson

...JUNE HIGHLIGHTS...
...14TH WARMEST ON RECORD...
...9TH WARMEST AVERAGE MONTHLY LOW TEMPERATURE ON RECORD...
...7TH AND 11TH WARMEST DAILY LOW TEMPERATURE RECORDED...
...A LITTLE MOISTURE SEEPS IN TOWARD THE END OF THE MONTH...

THE RELATIVELY COOL SPRING CONTINUED INTO THE FIRST PART OF JUNE AND
THEN THE HEAT WAS TURNED ON DURING THE SECOND HALF OF THE MONTH. YOU
COULD SAY "IT WAS A TALE OF TWO SEASONS...SPRING AND SUMMER".

AN UPPER LEVEL TROUGH OVER THE WEST COAST KEPT TEMPERATURES BELOW
NORMAL DURING THE FIRST TWO WEEKS OF JUNE. HOWEVER...DURING THE LAST
TWO WEEKS OF JUNE...HIGH PRESSURE BUILT OVER THE REGION BRINGING MUCH
ABOVE NORMAL TEMPERATURES TO THE AREA. THIS RESULTED IN A NINE AND A
HALF DEGREE DIFFERENCE BETWEEN THE FIRST HALF AND THE SECOND HALF OF
JUNE.

...1ST HALF VS 2ND HALF...       JUNE 1-13      JUNE 14-30
AVERAGE HIGH TEMPERATURE            93.8           105.2
AVERAGE LOW  TEMPERATURE            66.7            74.2
AVERAGE TEMPERATURE                 80.2            89.7
NUMBER OF 100+ DEGREE HIGHS           0              17

RECORD TEMPERATURES WERE BROKEN OR APPROACHED ON THE 20TH AND 21ST
AS THE MERCURY TOPPED OUT AT 110 DEGREES. THE OLD RECORD ON THE 20TH
WAS 109 DEGREES LAST SET IN 1993. BECAUSE OF THE WARM AFTERNOON...THE
EVENINGS DID NOT COOL AS USUAL WITH OVERNIGHT LOWS ON THE 21ST AND
22ND BEING IN THE LOWER 80S. BOTH DATES SET OR TIED RECORD HIGH
MINIMUM TEMPERATURES (21ST 82 DEGREES TIED RECORD SET IN 1996) AND
22ND (83 DEGREES...OLD RECORD 82 DEGREES SET IN 1970/1954/1902). THE
83 DEGREES ON THE 22ND RANKS AS THE 7TH WARMEST (TIED WITH THREE
OTHER JUNE DATES) DAILY LOW JUNE TEMPERATURE WHILE THE 82 DEGREES ON
THE 21ST RANKS AS THE 11TH WARMEST DAILY LOW JUNE TEMPERATURE (TIED
WITH 17 OTHER JUNE DATES). TEMPERATURE EXTREMES FOR THE MONTH RANGED
FROM A HIGH OF 110 DEGREES ON THE 20TH AND 21ST TO A LOW OF 62
DEGREES ON THE 8TH. THE MONTH ENDED WITH A STRING OF 17 CONSECUTIVE
DAYS WITH HIGH TEMPERATURES OF 100 DEGREES OR BETTER...WHICH IS THE
15TH LONGEST STRETCH DURING JUNE. OVERALL THE AVERAGE MONTHLY
TEMPERATURE FOR JUNE OF 85.7 DEGREES RANKS AS THE 14TH WARMEST ON
RECORD...WHILE THE AVERAGE MONTHLY LOW TEMPERATURE OF 71 DEGREES
RANKS AS THE 9TH WARMEST ON RECORD.

AVERAGE JUNE TEMPERATURES SINCE 1996...
2005 ..... 85.7     2000 ..... 84.6
2004 ..... 84.8     1999 ..... 83.8
2003 ..... 85.7     1998 ..... 81.8
2002 ..... 88.0     1997 ..... 83.1
2001 ..... 85.5     1996 ..... 87.4

A LITTLE BIT OF MOISTURE SEEPED INTO SOUTHEAST ARIZONA ON THE 23RD
AND 24TH...WHICH LED TO ISOLATED THUNDERSTORM ACTIVITY EACH DAY.
RAINFALL AMOUNTS WERE GENERALLY LESS THAN A TENTH OF AN INCH BUT
THERE WERE ISOLATED SPOTS BETWEEN A TENTH AND A QUARTER OF AN INCH
WITH VERY ISOLATED SPOTS UP TO A HALF AN INCH. OFFICIALLY AT THE
INTERNATIONAL AIRPORT...ONLY ONE HUNDREDTH OF AN INCH WAS MEASURED.

JUNE RAINFALL SINCE 1996...
2005 ..... 0.01"    2000 ..... 1.56"
2004 ..... TRACE    1999 ..... 0.16"
2003 ..... TRACE    1998 ..... 0.00"
2002 ..... 0.00"    1997 ..... 0.02"
2001 ..... 0.54"    1996 ..... TRACE

...JUNE 2005 STATS...          MONTH     NORMAL     DEPARTURE
AVERAGE HIGH TEMPERATURE       100.3     100.2        + 0.1
AVERAGE LOW  TEMPERATURE        71.0      68.0        + 3.0
AVERAGE TEMPERATURE             85.7      84.1        + 1.6
RAINFALL                        0.01"     0.24"      - 0.23"
NUMBER OF 100+ DEGREE HIGHS      17        18         -  1
		
THE 2004-2004 WATER YEAR (OCTOBER THROUGH JUNE) IS WETTER THAN THE
PAST THREE WATER YEARS...BUT STILL BELOW NORMAL.
		
WATER YEAR (OCT-JUNE) RAINFALL TOTALS SINCE 1991 (NORMAL IS 6.35")...
2004-2005 .....  5.73"     1999-2000 .....  2.78"
2003-2004 .....  4.99"     1998-1999 .....  2.87"
2002-2003 .....  3.15"     1997-1998 .....  9.15"
2001-2002 .....  2.02"     1996-1997 .....  4.48"
2000-2001 ..... 10.55"     1995-1996 .....  2.58"

...2005 STATS THRU JUNE...      YEAR     NORMAL     DEPARTURE
AVERAGE HIGH TEMPERATURE        79.7      79.7          0.0
AVERAGE LOW  TEMPERATURE        53.8      50.4        + 3.4
AVERAGE TEMPERATURE             66.8      65.1        + 1.7
RAINFALL                        3.96"     3.44"      + 0.52"
WATER YEAR RAINFALL (OCT-JUN)   5.73"     6.35"      - 0.62"
NUMBER OF 100+ DEGREE HIGHS      24        21         +  3

THE AVERAGE YEARLY TEMPERATURE THROUGH JUNE 30TH OF 66.8 DEGREES
RANKS AS THE 13TH WARMEST FIRST HALF OF THE CALENDAR YEAR. THE
AVERAGE YEARLY LOW TEMPERATURE THROUGH JUNE 30TH OF 53.8 DEGREES
RANKS AS THE WARMEST FIRST HALF OF THE CALENDAR YEAR.

...LOOKING AHEAD INTO JULY...
THE CLIMATE PREDICTION CENTER FORECASTS THAT THE MONTH OF JULY WILL
HAVE ABOVE NORMAL TEMPERATURES AND BELOW NORMAL RAINFALL. THE CLIMATE
PREDICTION CENTER FORECAST FOR THE MONSOON CALLS FOR ABOVE NORMAL
TEMPERATURES AND BELOW NEAR NORMAL RAINFALL. THE AVERAGE START TO THE
ANNUAL MONSOON IS JULY 3RD.
		
JULY NORMALS AND RECORDS...
AVERAGE HIGH TEMPERATURE ......... 99.6 DEGREES
AVERAGE LOW TEMPERATURE........... 73.4 DEGREES
AVERAGE MONTHLY TEMPERATURE ...... 86.5 DEGREES
RECORD HIGH TEMPERATURE .......... 114 DEGREES ON JULY 25 1995 AND
                                               ON JULY 4 1989
RECORD LOW TEMPERATURE ...........  49 DEGREES ON JULY 3 1911
WARMEST JULY (AVG) ............... 90.4 DEGREES IN 1994 
COLDEST JULY (AVG) ............... 81.4 DEGREES IN 1912
NORMAL RAINFALL .................. 2.07 INCHES
WETTEST JULY DAY ................. 3.93 INCHES ON JULY 29 1958
WETTEST JULY ..................... 6.24 INCHES IN 1921
DRIEST JULY ...................... 0.04 INCHES IN 1995

MONSOON SEASON RAINFALL NORMALS AND RECORDS...
AVERAGE START DATE ...............  JULY 3RD
NORMAL RAINFALL ..................  6.06 INCHES
WETTEST MONSOON SEASON ........... 13.85 INCHES IN 1964
DRIEST MONSOON SEASON ............  1.59 INCHES IN 1924

THE NUMBER OF DAYLIGHT HOURS WILL DECREASE FROM 14 HOURS 13 MINUTES
ON THE FIRST TO 13 HOURS 44 MINUTES ON THE 31ST...FOR A LOSS OF
29 MINUTES.

GLUECK

            

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