PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1018 AM CDT SAT AUG 1 2009
...JULY 2009 - MORE HEAT...MORE TEMPERATURE RECORDS...
...SUMMER OF 2009 IS NOW THE WARMEST IN CITY OF
HOUSTON WEATHER HISTORY...
...CITY OF HOUSTON SUFFERS DRIEST MAY THROUGH JULY...
A PERSISTENT UPPER LEVEL RIDGE CONTINUED TO EXERT CONSIDERABLE
INFLUENCE OVER SOUTHEAST TEXAS DURING THE MONTH OF JULY. THE RIDGE
SHIFTED SLIGHTLY WEST DURING THE MIDDLE PART OF THE MONTH AND THIS
ALLOWED A WEAK UPPER LEVEL TROUGH TO RETROGRADE INTO EAST TEXAS.
SLIGHTLY COOLER TEMPERATURES AND SOME SCATTERED SHOWERS AND
THUNDERSTORMS DEVELOPED IN THE WAKE OF THE UPPER TROUGH. RAINFALL
WAS STILL BELOW NORMAL FOR MOST LOCATIONS. BUT COMPARED TO THE
PALTRY AMOUNTS THAT FELL IN MAY AND JUNE...RAINFALL IN JULY WAS
DOWNRIGHT TROPICAL.
THE MONTHLY AVERAGE TEMPERATURES FOR JULY WERE BETWEEN 2.5 AND 4.5
DEGREES WARMER THAN THE 30 YEAR CLIMATOLOGICAL NORMALS. RECORD HIGH
TEMPERATURES PLAGUED THE REGION DURING THE FIRST WEEK OF JULY BUT AS
THE RIDGE SHIFTED WEST...HIGH TEMPERATURES BEGAN TO MODERATE BELOW
RECORD LEVELS. INCREASING LOW LEVEL MOISTURE AND SLIGHTLY STRONGER
WIND SPEEDS DID NOT ALLOW FOR MUCH COOLING OVERNIGHT. IT WAS THE
OPPRESSIVE OVERNIGHT LOW TEMPERATURES...BARELY FALLING BELOW 80
DEGREES...THAT FUELED THE RECORD MONTHLY AVERAGE TEMPERATURE. JULY
2009 WAS THE WARMEST JULY IN RECORDED HISTORY FOR COLLEGE STATION
AND HOUSTON HOBBY AIRPORT. THE CITY OF HOUSTON HAD IT`S SECOND
WARMEST JULY ON RECORD...FALLING JUST SHORT OF JULY 1980 DUE TO RAIN
COOLED TEMPERATURES ON THE LAST DAY OF THE MONTH. GALVESTON TIED
IT`S FOURTH WARMEST JULY ON RECORD.
FIVE WARMEST JULY AVERAGE TEMPERATURES
HOUSTON COLLEGE GALVESTON HOUSTON
STATION HOBBY
87.5 1980 89.1 2009 87.4 1875 86.7 2009
87.4 2009 88.6 1998 86.6 1996 86.6 1998
86.6 1998 87.9 1996 86.3 1876 86.1 1980
86.6 1957 87.7 1925 86.2 2009 85.4 1957
86.5 1892 87.5 1980 86.2 1871 85.3 1997
FIVE WARMEST JULY AVERAGE MINIMUM TEMPERATURES
HOUSTON COLLEGE STATION
78.3 IN 1963 77.5 IN 2009
77.9 IN 2009 76.8 IN 1902
77.8 IN 1962 76.0 IN 1998
77.7 IN 1964 75.6 IN 1996
77.4 IN 1958 75.5 IN 1995
THE AVERAGE JULY TEMPERATURE AT COLLEGE STATION AND HOUSTON HOBBY
AIRPORT ARE NOW THE WARMEST AVERAGE MONTHLY TEMPERATURES EVER
RECORDED FOR ANY MONTH AT ANY TIME. IN OTHER WORDS...THERE HAS NOT
BEEN A MONTH WITH AN AVERAGE TEMPERATURE THAT WAS WARMER THAN WHAT
JUST OCCURRED AT EITHER COLLEGE STATION OR HOUSTON HOBBY.
THE SUMMER OF 2009...THUS FAR DEFINED AS JUNE AND JULY IS NOW THE
WARMEST JUNE/JULY COMBINATION IN HOUSTON WEATHER HISTORY. THE
AVERAGE TEMPERATURE FOR THE TWO MONTH PERIOD WAS 86.5 DEGREES. THE
PREVIOUS WARMEST JUNE/JULY WAS THE OVEN LIKE SUMMER OF 1980...LONG
CONSIDERED THE BENCHMARK FOR OPPRESSIVE SUMMER HEAT. LOOKING FURTHER
BACK...IT IS ALSO THE WARMEST MAY-JULY COMBINATION IN CITY HISTORY.
THE 2009 MAY-JULY AVERAGE TEMPERATURE WAS 83.8 DEGREES. THE PREVIOUS
WARMEST AVERAGE TEMPERATURE FOR THIS PERIOD WAS 83.6 DEGREES IN 1998.
CITY OF HOUSTON WARMEST AVERAGE TEMPERATURES
JUNE/JULY MAY-JULY JAN-JULY
86.5 2009 83.7 2009 71.8 1911
86.3 1980 83.6 1998 71.4 1890
86.1 1998 83.3 1980 71.3 1962
86.1 1906 82.6 1906 71.2 1953
84.8 1958 82.5 1962 71.1 1957
84.7 2008 71.1 2009
COLLEGE STATION WARMEST AVERAGE TEMPERATURES
JUNE/JULY MAY-JULY JAN-JULY
87.7 1998 84.9 1998 71.3 1911
87.6 2009 84.4 1996 70.8 2009
87.0 1925 84.2 2009 70.7 1925
86.1 1934 83.8 1925 70.2 2000
85.8 1996 82.6 1934 70.1 1916
85.5 2008 82.5 2008 70.1 2006
GALVESTON WARMEST AVERAGE TEMPERATURES
JUNE/JULY MAY-JULY JAN-JULY
86.3 1875 83.6 1875 72.5 2000
85.4 2005 83.1 2009 72.2 2006
85.3 2009 82.9 1996 72.1 1882
85.1 1881 82.8 2008 72.0 1999
84.8 2008 82.6 1881 71.6 2009
71.6 2008
AS NOTED EARLIER...RAINFALL RETURNED TO THE AREA BUT MOST AREAS
RECEIVED LESS THAN NORMAL VALUES. A FEW LUCKY SPOTS...ESPECIALLY
OVER THE NORTHEAST PORTION OF THE REGION RECEIVED HEAVY RAINFALL.
THE AREA STILL SUFFERS FROM EXTREME TO EXCEPTIONAL DROUGHT
CONDITIONS ESPECIALLY OVER THE FAR WEST AND SOUTHWEST PORTIONS OF
THE AREA. HOUSTON IS ENDURING ITS DRIEST MAY THROUGH JULY IN
RECORDED HISTORY. BELOW IS A TABLE WITH THE FIVE DRIEST MAY THROUGH
JULY RAINFALL TOTALS:
MAY THROUGH JULY RAINFALL
HOUSTON COLLEGE GALVESTON HOUSTON
STATION HOBBY
3.49 2009 0.84 1998 1.95 1956 3.86 1934
4.37 1931 1.74 1934 2.38 1958 4.71 1998
4.56 1998 3.49 1988 2.42 1897 4.79 1931
4.58 1932 3.83 2009 2.57 1948 5.67 2009
4.70 1915 3.94 1963 3.01 1930 5.69 1932
3.18 2008
3.23 2009
MAY-JUL
NORMAL 13.68 10.76 11.19 16.31
MAY-JUL
2009 DEP -10.19 -6.93 -7.96 -10.64
BELOW IS A TABLE WITH THE MONTHLY TEMPERATURE AND RAINFALL DATA FOR
THE PRIMARY AND SUPPLEMENTAL CLIMATE SITES ACROSS SOUTHEAST TEXAS:
SITE AVG AVG AVG DEP RAIN DEP
HIGH LOW MONTH
IAH 96.8 77.9 87.4 +3.8 2.84 -0.34
HOU 96.1 77.4 86.7 +2.2 3.62 -0.74
CLL 100.7 77.5 89.1 +4.5 2.42 +0.50
GLS 91.9 80.6 86.2 +1.9 2.72 -0.73
PSX 91.8 81.3 86.5 +3.1 TRACE -3.99
UTS 98.1 76.6 87.4 +3.8 2.60 -0.07
CXO 96.6 74.1 85.4 +1.9 2.46 -0.78
DWH 96.7 75.1 85.9 +3.0 1.58 -2.48#
SGR 99.1 76.5 87.8 +4.5 0.96 -3.34
LVJ 94.7 75.6 85.2 +2.6 4.20 -0.88#
LBX 94.8 75.3 85.0 +3.8 2.73 -1.04
HGX 93.8 76.0 84.9 +2.6 4.31 +1.08#
# 15 YEAR AVERAGES
HERE IS MORE TEMPERATURE AND RAINFALL DATA PROVIDED BY OUR NETWORK OF
CO-OP OBSERVERS.
LOCATION AVERAGE AVERAGE HIGHEST RAINFALL
HIGH LOW TEMPERATURE
ALVIN 92.6 74.3 97 3.14
ANAHUAC 92.1 74.6 95 3.66
BAYTOWN 94.2 78.4 101 2.58
BELLVILLE 100.2 74.5 105 0.28
BRENHAM 99.5 74.9 104 1.00
CLEVELAND 95.2 72.5 99 1.72
COLUMBUS 99.8 75.3 104 0.70
CROCKETT 100.7 74.8 108 2.26
DACUS 3.52
DANEVANG 96.5 74.4 99 0.82
FREEPORT 92.1 79.1 95 3.59
HOU WESTBURY 2.60
LIVINGSTON 97.7 75.8 102 6.91
MATAGORDA 89.3 78.7 92 0.92
RICHMOND 0.84
SOMERVILLE 102.7 72.3 107 0.73
WASH ST PARK 100.4 73.4 104 0.72
WEST COLUMBIA 3.29
&&
RECORDS:
HOUSTON INTERCONTINENTAL AIRPORT
RECORD HIGH
NEW RECORD PREVIOUS RECORD
JULY 3 100 DEGREES 100 DEGREES IN 1980 (TIED)
JULY 4 101 DEGREES 100 DEGREES IN 1970
JULY 5 102 DEGREES 99 DEGREES IN 2005
RECORD HIGH MINIMUM
JULY 4 81 DEGREES 80 DEGREES IN 2005
JULY 5 80 DEGREES 80 DEGREES IN 1986 (TIED)
JULY 6 81 DEGREES 80 DEGREES IN 1964
JULY 8 80 DEGREES 80 DEGREES IN 1964 (TIED)
JULY 9 80 DEGREES 80 DEGREES IN 1964 (TIED)
JULY 10 81 DEGREES 80 DEGREES IN 2007
JULY 13 80 DEGREES 80 DEGREES IN 1998 (TIED)
JULY 21 81 DEGREES 80 DEGREES IN 1995
JULY 28 81 DEGREES 80 DEGREES IN 1964
JULY 30 83 DEGREES 83 DEGREES IN 1895 (TIED)
COLLEGE STATION
RECORD HIGH
JULY 2 105 DEGREES 103 DEGREES IN 1980
JULY 3 103 DEGREES 101 DEGREES IN 1990
JULY 5 104 DEGREES 103 DEGREES IN 1939
JULY 13 103 DEGREES 103 DEGREES IN 2000 (TIED)
RECORD HIGH MINIMUM
JULY 4 79 DEGREES 78 DEGREES IN 2005
JUNE 5 80 DEGREES 78 DEGREES IN 1932
JULY 6 80 DEGREES 78 DEGREES IN 1993
JULY 7 79 DEGREES 78 DEGREES IN 1931
JULY 10 80 DEGREES 77 DEGREES IN 2007
JULY 12 78 DEGREES 78 DEGREES IN 1998 (TIED)
JULY 14 78 DEGREES 78 DEGREES IN 1925 (TIED)
JULY 16 79 DEGREES 79 DEGREES IN 1932
JULY 21 78 DEGREES 78 DEGREES IN 1995
JULY 22 79 DEGREES 79 DEGREES IN 1995
JULY 26 79 DEGREES 79 DEGREES IN 1995
JULY 28 81 DEGREES 79 DEGREES IN 1962
JULY 29 81 DEGREES 79 DEGREES IN 1995
RECORD RAINFALL
56 CONSECUTIVE DAYS WITHOUT MEASURABLE RAIN ENDED JULY 19 2009
JULY 20 2.00 INCHES 1.05 INCHES IN 2007
HOUSTON HOBBY AIRPORT
RECORD HIGH
JULY 5 103 DEGREES
RECORD HIGH MINIMUM
JULY 4 79 DEGREES
JULY 5 78 DEGREES
JULY 6 79 DEGREES
JULY 8 79 DEGREES
JULY 10 79 DEGREES
JULY 11 78 DEGREES
JULY 16 79 DEGREES
JULY 28 79 DEGREES
JULY 29 80 DEGREES
JULY 30 81 DEGREES
JULY 31 80 DEGREES
GALVESTON
RECORD HIGH
JULY 1 95 DEGREES 95 DEGREES IN 1949 (TIED)
RECORD HIGH MINIMUM
JULY 4 84 DEGREES 84 DEGREES IN 2005 (TIED)
JULY 5 83 DEGREES 83 DEGREES IN 1987 (TIED)
JULY 10 83 DEGREES 83 DEGREES IN 1992 (TIED)
JULY 28 83 DEGREES 83 DEGREES IN 1998 (TIED)
JULY 29 83 DEGREES 83 DEGREES IN 2002 (TIED)
JULY 30 84 DEGREES 83 DEGREES IN 2004
$$
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