July 2011 was the second warmest July on record, eclipsed only by July 1998; it was also the second warmest month on record. Rainfall was about 45 percent of normal, continuing the drought which commenced in July 2010.
Records for Tyler date to 1896.
Compared with July 2010, the month was 4.9 deg. Warmer, and 2.44 inches drier.
The thirty-day outlook had called for above normal temperatures and near normal precipitation.
For most of the month, a stubborn upper air high pressure ridge was firmly in control. This, combined with the drought and dry soils and vegetation, resulted in high temperatures. The mercury reached or exceeded 100 degrees on each of the nine days between the 7th and 15th, Slight weaknesses in the ridge on the 6th brought showers. The ridge shifted northeast of the region on the 14th, permitting afternoon showers to be widely scattered through the 19th.
The ridge returned on the 20th, remaining through month's end. There were isolated showers when weaknesses developed between the 26th and 29th.
- KEY TO SYMBOLS:
- A = HAIL
- B = BLOWING
- D = DUST
- F = FOG
- H = HAZE
- IP = SLEET
- K = SMOKE
- L = DRIZZLE
- R = RAIN
- S = SNOW
- T = THUNDERSTORM
- Z = GREENWICH MEAN TIME
- ZL = FREEZING DRIZZLE
- ZR = FREEZING RAIN
- - = LIGHT
- + = HEAVY
The reporting period for temperatures and phenomenon on each day is for the twenty-four hours ending at midnight hours GMT--6 p.m. CST and 7 p.m. CDT. The reporting period for precipitation is for the twenty-four hours ending at noon GMT--6 a.m. CST and 7 a.m. CDT. All times are given using the twenty-four hour clock, and are expressed in Greenwich Mean Time.
Observations are from NWS Station 41/9207/4 in Tyler, Texas. The term "normal" refers to averages from the standard climatic period 1971-2000.
July 2011
MX MN OBS PCPN REMARKS
- 01 99 73 93
- 02 98 77 87
- 03 101 74 94
- 04 101 76 98 H
- 05 99 74 84 0.30 T, PCPN 2100-2300
- 06 99 71 95 0.14 T, PCPN 0300-0400
- 07 101 74 99
- 08 101 80 98 tr.
- 09 100 80 97
- 10 101 78 97
- 11 100 77 98
- 12 101 79 98
- 13 103 79 101
- 14 103 77 79 0.05 T, PCPN 2200-2400, Morning Low 80
- 15 102 76 90 0.03 PCPN 2200-2300
- 16 99 75 97
- 17 99 76 95
- 18 99 76 97
- 19 96 77 93
- 20 100 75 95
- 21 100 78 98
- 22 100 79 98
- 23 101 78 100
- 24 103 79 101
- 25 98 77 90 T, MORNING LOW 82
- 26 101 77 0.10, T, PCPN 0000-0200
- 27 101 79 94
- 28 99 76 90
- 29 98 76 81 0.34 T, PCPN 2300-2400
- 30 99 75 95
- 31 104 78 101
July 2011, RECORDS AND SUMMARY:
- JULY 2011 SECOND WARMEST JULY AND SECOND WARMEST MONTH ON RECORD;
- REPLACES 88.1 DEG. IN 1930;
- 9TH EQUALLED RECORD HIGH MINIMUM 80, FIRST SET IN 1998;
- HIGHEST TEMPERATURE 104 ON THE 31ST,
- LOWEST TEMPERATURE 71 ON THE 6TH,
- AVERAGE MAXIMUM 100.2 F.,
- AVERAGE MINIMUM 76.6 F.,
- AVERAGE TEMPERATURE 88.4 F.,
- 5.0 DEG. WARMER THAN NORMAL.
- 0 HEATING DEGREE DAYS,
- 0 PERCENT OF NORMAL HEATING DEGREE DAYS.
- 734 COOLING DEGREE DAYS,
- 129.2 PERCENT OF NORMAL COOLING DEGREE-DAYS;
- TOTAL PRECIPITATION 0.97 IN.,
- 1.19 IN. LESS THAN MONTHLY NORMAL.
- 44.9 PERCENT OF NORMAL MONTHLY PRECIPITATION.
- YEAR-TO-DATE PRECIPITATION 15.55 IN., 9.45 IN. LESS THAN NORMAL YEAR-TO-DATE PRECIPITATION,
- 62.2 PERCENT OF NORMAL YEAR-TO-DATE PRECIPITATION;
- 4 DAYS ON WHICH THUNDERSTORMS OCCURRED;
- 5 DAYS ON WHICH MEASURABLE PRECIPITATION OCCURRED;
- 1 DAYS ON WHICH THE VISIBILITY WAS RESTRICTED TO BETWEEN 1/2 AND 6 MILES BY FOG, SMOKE, OR HAZE;
- 0 DAYS ON WHICH THE VISIBILITY WAS RESTRICTED TO 1/4 MILE OR LESS BY FOG;
- 0 DAYS ON WHICH THE VISIBILITY WAS RESTRICTED BY DUST OR BLOWING DUST;
- 0 DAYS ON WHICH FROZEN PRECIPITATION WAS OBSERVED;
- 0 IN. TOTAL SNOWFALL.
- 31 DAYS ON WHICH THE MAXIMUM TEMPERATURE REACHED OR EXCEEDED 90 DEG.;
- 19 DAYS ON WHICH THE MAXIMUM TEMPERATURE REACHED OR EXCEEDED 100 DEG.;
- 0 DAYS ON WHICH THE TEMPERATURE FAILED TO RISE ABOVE 32 DEG.
- 0 DAYS ON WHICH THE MINIMUM TEMPERATURE REACHED OR FELL BELOW 32 DEG.
- 0 SEASON-TO-DATE HEATING DEGREE DAYS,
- PERCENTAGE OF NORMAL SEASON-TO-DATE HEATING DEGREE DAYS: 0,
- 1787 YEAR-TO-DATE COOLING DEGREE DAYS.
- PERCENTAGE OF NORMAL YEAR-TO-DATE COOLING DEGREE DAYS: 125.1,
- PRECIPITATION DURING THE PREVIOUS TWELVE MONTHS 23.45 IN.,
- TWELVE-MONTH PRECIPITATION PERCENTAGE 51.8.
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