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Texas Climate Report: September 2010

September 2010 was filled with many weather elements. From heat to tropical storms, Texas saw it all this past month. According to the National Weather Service this past summer (June through August) was the fourth warmest summer in United States history. Yet, the summer heat extended itself through the beginning of September across much of Texas. Temperatures across most of the state remained high until a cold front passed through the state right around the time autumnal equinox made its appearance. Seven of the nineteen first-order stations saw an absolute maximum temperature of 100°F or more and every single station recorded a positive average minimum temperature departure for the month of September. All nineteen stations received at least four days of precipitation with Corpus Christi receiving the most totaling 15.86" of rainfall. The Austin, Dallas/ Fort Worth, and Waco areas broke new monthly records for maximum precipitation totals in 24 hours. Austin had 7.39", Dallas/Fort Worth had 5.75", and Waco 5.89" of rainfall within 24 hours.

The Lone Star State also felt the indirect and direct effects of a hurricane and a tropical storm. Most notably was Tropical Storm Hermine. Hermine wreaked havoc from Corpus Christi all the way to the Dallas/ Fort Worth area. With help from Tropical Storm Hermine and Hurricane Karl some impressive rain totals for the month were seen in Austin, Brownsville, Corpus Christi, the Metroplex, San Antonio, Victoria and Waco. Tropical Storm Hermine also brought tornadoes to the Dallas area. 115 mph winds were clocked as a tornado skittered through an industrial area in Dallas. The tornado blew down concrete walls, ripped roofs apart, snapped power poles and knocked down signs. The month ended much like it began with warm and humid conditions. The last few days of September across the state brought temperatures peaking in the 90s and dewpoint levels into the 50s and 60s.

Monthly Summary for Selected Cities

  TMAX (°F) TMIN (°F) TAVG (°F) PRCP *Deg. Days
Station Mean *Dep. Max. Mean *Dep. Min. Mean *Dep. Days ≥ 0.01" Mo. Total *Perc. Norm. Gr'st 24 hr. *HDD *CDD
Abilene 88.5 +1.8 99 67.1 +2.7 49 77.8 +2.3 6 2.44 84% 0.84 2 391
Amarillo 88.3 +6.5 101 59.4 +3.1 48 73.8 +4.7 6 1.79 95% 1.00 4 277
Austin 90.1 100 71.3 +2.5 55 80.7 +1.2 11 13.20 454% 7.39 0 481
Brownsville 90.2 +0.8 96 75.1 +2.5 63 82.6 +1.6 15 12.63 238% 6.49 0 538
College Station 91.1 +0.2 99 72.1 +3.6 55 81.6 +1.9 10 5.81 149% 2.21 0 508
Corpus Christi 88.9 ‑1.0 96 73.4 +1.8 60 81.2 +0.4 13 15.86 315% 8.49 0 493
Dallas‑Fort Worth 88.8 +1.1 96 70.8 +3.6 53 79.8 +2.3 7 9.09 376% 5.75 1 451
Del Rio 91.9 +1.3 100 71.8 +2.4 54 81.8 +1.8 8 2.06 100% 1.15 0 513
El Paso 90.6 +3.5 100 66.9 +3.2 59 78.8 +3.4 8 1.62 101% 1.29 0 421
Galveston 87.9 +1.4 93 77.3 +1.7 65 82.6 +1.5 12 4.60 80% 1.86 0 535
Houston 90.3 +1.0 96 72.5 +4.1 57 81.4 +2.5 5 4.81 111% 2.87 0 497
Lubbock 87.9 +4.5 99 61.8 +3.4 48 74.8 +3.9 5 0.93 36% 0.57 0 306
Midland 88.7 +2.6 99 64.0 +2.4 49 76.3 +2.4 8 2.35 102% 1.42 0 347
Port Arthur 89.8 +1.8 96 73.1 +3.7 57 81.4 +2.7 6 3.80 62% 1.92 0 500
San Angelo 92.5 +5.9 103 66.8 +3.8 49 79.7 +4.9 6 1.72 58% 1.12 0 444
San Antonio 89.0 ‑1.0 98 71.2 +2.4 52 80.1 +0.7 14 9.37 312% 6.45 0 459
Victoria 89.1 ‑0.8 96 72.4 +2.1 56 80.8 +0.7 17 14.64 293% 4.54 0 479
Waco 90.7 +0.6 100 69.2 +2.2 48 80.0 +1.4 7 9.49 330% 5.89 0 456
Wichita Falls 88.5 +1.0 98 67.2 +3.5 49 77.9 +2.3 8 5.41 170% 2.16 3 394
Shreveport, LA 94.6 +7.0 101 68.9 +2.5 53 81.7 +4.7 4 0.12 4% 0.04 0 510
*Dep.: Departure of the monthly average temperature from the 1971-2000 monthly normal, which is provided by the National Climatic Data Center.
*Perc. Norm.: Monthly precipitation total divided by 1971-2000 monthly normal, which is provided by the National Climatic Data Center.
*Deg. Days: Computed daily as the departure of the daily average temperature from 65°F and aggregated over the entire month.
*Heating degree day (HDD): Each unit corresponds to a -1°F departure of a daily average temperature from 65°F.
*Cooling degree day (HDD): Each unit corresponds to a +1°F departure of a daily average temperature from 65°F.

sep 2010 average temperatures
sep 2010 average precipitation

Monthly Extremes

Least Precipitation Overall for the Month (inches)
Station County Value
KOUNTZE HARDIN 0.00
LAWN TAYLOR 0.00
PITTSBURG 5 SSE CAMP 0.00
Greatest Precipitation Overall for the Month (inches)
Station County Value
ROCKPORT ARANSAS 19.91
Greatest Precipitation in 24 Hours (inches)
Station County Value
GEORGETOWN LAKE WILLIAMSON 14.57
Lowest Average Daily Temperature (°F)
Station County Value
DOG CANYON CULBERSON 64.0
Highest Average Daily Temperature (°F)
Station County Value
LAREDO INTL AP WEBB 85.3
Lowest Average Daily Maximum Temperature (°F)
Station County Value
DOG CANYON CULBERSON 74.7
Highest Average Daily Maximum Temperature (°F)
Station County Value
RIO GRANDE VILLAGE BREWSTER 98.7
Highest Maximum Temperature  (°F)
Station County Value
LEXINGTON LEE 109
Lowest Maximum Temperature  (°F)
Station County Value
DOG CANYON CULBERSON 65
Lowest Average Daily Minimum Temperature (°F)
Station County Value
DUMAS MOORE 51.9
Highest Average Daily Minimum Temperature (°F)
Station County Value
PORT ISABEL CAMERON AP CAMERON 78.3
Highest Minimum Temperature (°F)
Station County Value
GALVESTON SCHOLES FLD GALVESTON 84
PORT ISABEL CAMERON AP CAMERON 84
PORT O CONNOR CALHOUN 84
Lowest Minimum Temperature (°F)
Station County Value
SAN MARCOS HAYS 39

New Monthly Records

Least Precipitation Overall for the Month (inches)
Station County Value Previous Record Yrs. Data
LONGVIEW E TX RGNL AP GREGG 0.93 1.26 (2004) 10
CARTHAGE PANOLA 0.25 0.29 (1952) 54
KOUNTZE HARDIN 0.00 1.79 (1994) 22
LAWN TAYLOR 0.00 0.00 (1979) 59
PITTSBURG 5 SSE CAMP 0.00 0.00 (1983) 55
Greatest Precipitation Overall for the Month (inches)
Station County Value Previous Record Yrs. Data
FT HOOD BELL 11.69 7.43 (1964) 12
DENTON MUNI AP DENTON 9.32 4.59 (2009) 10
BURNET MUNI AP BURNET 6.87 6.74 (2009) 12
SAN ANTONIO STINSON AP BEXAR 9.11 8.59 (2002) 13
NEW BRAUNFELS MUNI&nbnbsp;AP GUADALUPE 9.62 5.58 (2003) 11
FT WORTH NAS TARRANT 10.88 9.59 (1964) 29
FT WORTH MEACHAM FLD TARRANT 9.89 7.31 (1943) 31
FT WORTH ALLIANCE AP TARRANT 8.39 5.72 (2009) 12
MCKINNEY MUNI AP COLLIN 7.47 5.39 (2003) 11
YOAKUM LAVACA 13.51 11.90 (1978) 82
ALVORD 3 N WISE 7.66 4.86 (2009) 11
ANDICE 2 SW WILLIAMSON 11.76 9.90 (2009) 42
AQUILLA 1 SSE HILL 8.94 8.36 (2009) 19
BANKERSMITH GILLESPIE 8.68 7.05 (1991) 30
BONITA 4 NW MONTAGUE 6.71 6.42 (1949) 11
CAMP VERDE 3W KERR 9.80 8.14 (2002) 12
CHEAPSIDE GONZALES 9.05 8.13 (1996) 14
CLEBURNE JOHNSON 10.82 10.81 (2009) 100
COMFORT 2 KENDALL 7.61 6.82 (1991) 21
DECATUR WISE 15.49 11.99 (1962) 57
DRIPPING SPRINGS 6 E HAYS 11.61 9.58 (2009) 26
FLORENCE 3 SE WILLIAMSON 15.00 10.45 (2009) 43
FT WORTH WSFO TARRANT 9.60 6.82 (2009) 20
GAINESVILLE 5 ENE COOKE 13.30 9.91 (1988) 24
GATESVILLE 4 SSE CORYELL 11.54 10.95 (1936) 91
GONZALES 10 SW GONZALES 6.92 5.20 (2006) 13
HUNT 10 W KERR 7.42 7.25 (1995) 18
JOE POOL LAKE DALLAS 9.40 6.43 (2009) 23
JOHNSON CITY BLANCO 10.95 9.42 (1978) 42
KENDALIA KENDALL 8.08 7.23 (1996) 14
LIPAN PALO PINTO 7.69 7.56 (1967) 59
LOS ANGELES 4 WSW LA SALLE 8.74 5.00 (2006) 12
MORGAN 3 WNW BOSQUE 11.83 10.05 (1970) 44
GEORGETOWN LAKE WILLIAMSON 17.75 12.15 (2009) 31
NORTHINGTON RCH KENDALL 11.57 7.99 (2001) 25
PORT ARANSAS NUECES 19.22 9.69 (1996) 22
ROUND ROCK 3 NE WILLIAMSON 8.57 7.22 (1996) 43
SAN ANTONIO 8 NNE BEXAR 10.65 8.25 (2002) 14
SCOTLAND ARCHER 7.01 4.80 (2006) 13
SPICEWOOD BURNET 8.76 7.36 (1968) 42
STILLHOUSE HOLLOW DAM BELL 11.90 10.75 (2009) 46
THREE RIVERS 8 NE LIVE OAK 11.35 10.58 (2003) 23
THROCKMORTON 7 NE THROCKMORTON 5.17 4.59 (2009) 10
WATSON BURNET 9.38 7.26 (2009) 43
WHITNEY DAM BOSQUE 15.97 8.63 (1967) 60
WIMBERLEY 1 NW HAYS 12.88 10.39 (2009) 25
YOUNGSPORT BELL 12.45 12.42 (2009) 19
Greatest Precipitation in 24 Hours Ever in the Month (inches)
Station County Value Previous Record Yrs. Data
FT HOOD BELL 11.10 4.76 (1961) 12
DENTON MUNI AP DENTON 5.45 3.23 (2003) 10
BURNET MUNI AP BURNET 4.47 3.57 (2002) 12
HONDO MUNI AP MEDINA 4.33 4.19 (2002) 31
SAN ANTONIO STINSON AP BEXAR 6.58 3.35 (1941) 13
NEW BRAUNFELS MUNI AP GUADALUPE 5.07 2.42 (2003) 11
FT WORTH NAS TARRANT 5.26 4.00 (1962) 29
DALLAS LOVE FLD DALLAS 5.65 5.10 (2007) 97
FT WORTH MEACHAM FLD TARRANT 6.86 4.54 (1943) 31
FT WORTH ALLIANCE AP TARRANT 5.28 3.66 (2003) 12
MCKINNEY MUNI AP COLLIN 5.54 2.39 (2001) 11
ALVORD 3 N WISE 5.50 2.90 (1951) 11
ANDICE 2 SW WILLIAMSON 9.00 5.76 (1981) 42
AQUILLA 1 SSE HILL 4.36 2.47 (2009) 19
BANKERSMITH GILLESPIE 7.41 3.52 (1986) 30
BENBROOK DAM TARRANT 5.20 4.80 (1964) 61
BREMOND ROBERTSON 3.66 3.23 (2003) 47
BURLESON JOHNSON 5.78 5.35 (2009) 25
CAMP VERDE 3W KERR 5.77 4.58 (2002) 12
CANYON DAM COMAL 6.56 5.48 (1973) 48
COMFORT 2 KENDALL 4.12 2.38 (1993) 21
COPPERAS COVE 5 NW CORYELL 5.75 3.80 (1986) 26
CRAWFORD MCLENNAN 6.42 4.28 (2009) 11
CROSS MCMULLEN 3.26 2.82 (2006) 14
DECATUR WISE 7.74 5.64 (1980) 57
DRIPPING SPRINGS 6 E HAYS 5.23 4.06 (1986) 26
FLORENCE 3 SE WILLIAMSON 11.64 4.61 (2009) 43
FT WORTH WSFO TARRANT 4.48 2.33 (1950) 20
GAINESVILLE 5 ENE COOKE 4.45 4.02 (1993) 24
GATESVILLE 4 SSE CORYELL 8.67 6.50 (1966) 91
GONZALES 10 SW GONZALES 3.57 2.46 (2006) 13
ITASCA HILL 4.80 4.60 (2007) 24
JOE POOL LAKE DALLAS 4.22 4.00 (1986) 23
JOHNSON CITY BLANCO 4.76 4.19 (1986) 42
LLANO 18 S LLANO 3.02 2.52 (2002) 13
LOCKHART 2 SW CALDWELL 4.20 4.00 (2003) 14
LOS ANGELES 4 WSW LA SALLE 5.20 2.92 (2009) 12
MORGAN MILL ERATH 6.00 5.11 (2009) 56
GEORGETOWN LAKE WILLIAMSON 14.57 4.79 (2009) 31
NORTHINGTON RCH KENDALL 5.13 3.84 (1989) 25
PORT ARANSAS NUECES 6.90 4.24 (1996) 22
REFUGIO 3 SW REFUGIO 5.32 5.00 (1998) 15
ROUND ROCK 3 NE WILLIAMSON 6.05 4.30 (1973) 43
SAN ANTONIO 8 NNE BEXAR 5.83 3.44 (2002) 14
SISTERDALE KENDALL 4.90 3.15 (2001) 20
SPICEWOOD BURNET 3.27 3.05 (1968) 42
SPRING BRANCH 2SE COMAL 8.52 4.25 (1973) 51
STEPHENVILLE 1 N ERATH 5.11 3.81 (1955) 71
STILLHOUSE HOLLOW DAM BELL 10.01 5.38 (2009) 46
TAYLOR 1 NW WILLIAMSON 2.93 2.42 (2009) 11
THORNDALE MILAM 4.58 3.26 (1974) 43
GORDON 1 SW PALO PINTO 4.30 3.85 (1986) 51
TILDEN 4 SSE MCMULLEN 8.00 6.93 (1967) 52
WACO DAM MCLENNAN 4.13 3.33 (1970) 40
WATSON BURNET 4.57 2.82 (1987) 43
WEST MCLENNAN 4.10 2.53 (2003) 18
WHITNEY DAM BOSQUE 10.50 5.66 (2007) 60
WIMBERLEY 1 NW HAYS 7.35 3.60 (2009) 25
YOUNGSPORT BELL 11.27 5.26 (2009) 19
Lowest Average Daily Temperature (°F)
Station County Value Previous Record Yrs. Data
POINT COMFORT CALHOUN 74.8 76.9 (1979) 39
Highest Average Daily Temperature (°F)
Station County Value Previous Record Yrs. Data
FT HOOD BELL 81.9 81.2 (2007) 11
BOYS RANCH OLDHAM 75.2 74.7 (1998) 29
BUSHLAND 1 WSW POTTER 72.5 72.1 (2000) 10
JEFFERSON MARION 79.8 79.2 (1998) 26
PERRYTON OCHILTREE 74.2 74.0 (2005) 42
Lowest Average Daily Maximum Temperature (°F)
Station County Value Previous Record Yrs. Data
FLATONIA FAYETTE 82.7 82.7 (2003) 96
VICTORIA FIRE DEPT #5 VICTORIA 87.7 87.7 (2003) 10
Highest Average Daily Maximum Temperature (°F)
Station County Value Previous Record Yrs. Data
LONGVIEW E TX RGNL AP GREGG 92.6 91.0 (2000) 10
FT HOOD BELL 91.6 90.9 (2007) 11
DALHART MUNI AP DALLAM 89.6 88.8 (2000) 62
BORGER HUTCHINSON 92.5 92.5 (2000) 62
JEFFERSON MARION 92.7 90.6 (1990) 26
Highest Maximum Temperature Ever in the Month (°F)
Station County Value Previous Record Yrs. Data
FRIONA PARMER 99 99 (2000) 49
LITTLEFIELD LAMB 102 102 (2000) 41
PANHANDLE CARSON 105 105 (2007) 48
PERRYTON OCHILTREE 106 105 (1995) 43
SANFORD DAM HUTCHINSON 103 102 (2009) 16
Lowest Average Daily Minimum Temperature (°F)
Station County Value Previous Record Yrs. Data
SAN MARCOS HAYS 55.8 61.7 (1949) 100
Highest Average Daily Minimum Temperature (°F)
Station County Value Previous Record Yrs. Data
FT HOOD BELL 72.2 71.6 (2007) 11
BLANCO BLANCO 71.5 71.1 (1986) 107
BUSHLAND 1 WSW POTTER 56.2 55.6 (2007) 10
DEL RIO 2 NW VAL VERDE 70.9 70.8 (2005) 15
DENISON DAM GRAYSON 68.9 68.7 (1978) 60
FT DAVIS JEFF DAVIS 58.1 58.0 (1983) 35
FRIONA PARMER 58.3 57.9 (1998) 48
LA TUNA 1 S EL PASO 67.2 66.9 (2007) 61
LAKE FORK RSVR WOOD 67.3 67.3 (2007) 22
LITTLEFIELD LAMB 59.4 59.4 (2007) 42
RAINBOW SOMERVELL 67.0 66.3 (2007) 10
SAN SABA 7 NW SAN SABA 66.1 66.0 (2007) 10
Highest Minimum Temperature Ever in the Month (°F)
Station County Value Previous Record Yrs. Data
FT HOOD BELL 80 78 (1965) 11
LAREDO INTL AP WEBB 82 82 (1966) 27
GALVESTON SCHOLES FLD GALVESTON 84 84 (1995) 134
COLUMBUS COLORADO 78 77 (2008) 49
HONDO MUNI AP MEDINA 78 78 (2000) 33
SAN ANTONIO STINSON AP BEXAR 80 79 (2008) 13
NEW BRAUNFELS MUNI AP GUADALUPE 78 78 (2008) 13
LUBBOCK INTL AP LUBBOCK 73 73 (2005) 97
BARDWELL DAM ELLIS 77 77 (1998) 42
BLANCO BLANCO 79 78 (1983) 107
DECATUR WISE 77 75 (2005) 10
DIMMITT 2 N CASTRO 66 65 (2007) 48
GRAPEVINE DAM TARRANT 79 79 (1998) 53
HART CASTRO 68 67 (2007) 24
HEBBRONVILLE JIM HOGG 79 79 (1996) 39
JEFFERSON MARION 77 77 (2007) 26
JOE POOL LAKE DALLAS 79 79 (1998) 12
NEW BRAUNFELS COMAL 79 79 (1989) 111
PAINT ROCK CONCHO 78 78 (2000) 43
PORT O CONNOR CALHOUN 84 84 (1971) 49
RAINBOW SOMERVELL 77 77 (2005) 10
SAN ANTONIO/SEAWORLD BEXAR 79 78 (2000) 19
Lowest Minimum Temperature Ever in the Month (°F)
Station County Value Previous Record Yrs. Data
HARLINGEN RIO GRANDE AP CAMERON 58 59 (1999) 22
CEDAR CREEK 5 S BASTROP 48 49 (2001) 10
LA JOYA HIDALGO 58 58 (1996) 14
POINT COMFORT CALHOUN 40 47 (1989) 41
SAN MARCOS HAYS 39 42 (1967) 100
SOMERVILLE DAM BURLESON 42 42 (2000) 44

Climatic Averages for October

  TMAX (°F) TMIN (°F) PRCP (inches) No. Days in Month Deg. Days
Station Avg. Record Avg. Record Avg. Gr'st Mo. Gr'st 24 hr. ≥ 90°F ≤ 32°F PRCP ≥ 0.01" HDD CDD
Abilene 77.6 103 (1979) 54.4 23 (1993) 2.90 10.88 (1941) 6.08 (1981) 2.2 0.3 6.2 93 118
Amarillo 71.8 99 (2000) 44.6 12 (1993) 1.50 7.64 (1941) 3.03 (1998) 0.8 2.3 5.0 239 26
Austin 81.4 100 (1938) 59.8 30 (1993) 3.97 12.63 (1925) 7.51 (1998) 4.4 0.0 7.4 32 207
Brownsville 84.0 99 (1900) 65.9 35 (1993) 3.78 17.12 (1958) 9.09 (1996) 6.2 0.0 7.3 6 332
College Station 82.0 102 (1938) 59.0 29 (1993) 4.22 18.77 (1994) 13.39 (1994) 3.2 0.1 7.6 25 196
Corpus Christi 83.6 98 (1950) 64.0 28 (1993) 3.94 12.03 (1997) 7.96 (1995) 5.5 0.0 6.7 12 300
Dallas‑Fort Worth 77.9 106 (1951) 56.4 24 (1917) 4.11 14.18 (1981) 4.85 (1959) 3.0 0.1 6.9 52 118
Del Rio 81.7 106 (1979) 60.5 28 (1993) 2.00 11.69 (1930) 7.60 (1969) 5.1 0.1 5.7 24 217
El Paso 77.9 96 (1994) 51.8 25 (1970) 0.81 5.15 (1884) 1.84 (1883) 2.4 0.5 4.9 89 71
Galveston 79.7 94 (1952) 68.4 39 (1993) 3.49 17.78 (1871) 14.01 (1901) 0.1 0.0 6.8 6 286
Houston 82.0 99 (1900) 58.8 29 (1993) 4.50 17.64 (1949) 9.31 (1984) 3.1 0.1 7.5 37 196
Lubbock 74.4 100 (2000) 47.0 18 (1993) 1.70 10.80 (1983) 5.82 (1983) 1.2 1.0 5.1 163 46
Midland 77.4 101 (2000) 51.3 24 (1993) 1.77 7.45 (1986) 3.59 (1985) 2.4 0.3 4.7 103 83
Port Arthur 80.5 99 (1905) 59.6 30 (1993) 4.67 15.09 (1970) 9.26 (1902) 1.5 0.1 6.5 34 195
San Angelo 77.8 100 (1951) 53.0 26 (1997) 2.57 8.68 (1981) 5.11 (1959) 2.7 0.3 5.6 84 112
San Antonio 82.0 99 (1991) 59.4 27 (1993) 3.86 18.07 (1998) 13.35 (1998) 4.9 0.0 6.9 33 215
Victoria 83.0 109 (1926) 61.6 31 (1993) 4.26 17.25 (1960) 8.15 (1994) 4.9 0.0 7.3 22 248
Waco 80.4 101 (1989) 56.7 25 (1993) 3.67 10.51 (1984) 5.72 (1974) 4.5 0.1 6.9 58 170
Wichita Falls 77.1 102 (2000) 52.4 21 (1993) 3.11 11.77 (1941) 5.61 (1959) 3.3 0.4 7.0 106 99
Shreveport, LA 78.3 99 (1938) 55.0 28 (1993) 4.45 20.35 (2009) 6.83 (1949) 1.8 0.2 7.4 78 119
Climatic averages are based on 1971-2000 monthly normals, which are provided by the National Climatic Data Center.
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