July 2011 was the hottest single month since records began at both Oklahoma City and Wichita Falls…
After a record breaking June, July was another month of unprecedented heat across the Southern Plains. Many records were tied or broken at Will Rogers World Airport in Oklahoma City, Oklahoma and Sheppard Air Force Base in Wichita Falls, Texas. The highest daily temperature for the month was 111 degrees, recorded at Wichita Falls on the 9th. Oklahoma City reached 110 degrees that same day. Most impressively, based on the average monthly temperature, both locations claimed new records for their warmest July and warmest single calendar month since records began.
Period of record
Temperature and precipitation records at Oklahoma City began in 1890. Temperature records at Wichita Falls began in 1923. Precipitation records at Wichita Falls exist, with some gaps, back to 1897. Continuous precipitation records began at Wichita Falls in 1924.
Individual records & notable streaks
Below is a list of the temperature and precipitation records that were tied and broken during July 2011, at both Oklahoma City and Wichita Falls.
Warmest average monthly temperature on record, now 89.2 degrees. Previous record was 88.7 degrees in August 1936.
Warmest July on record. Previous record was 88.3 degrees in 1934 and 1980.
Record daily maximum temperatures set on the 7th, 9th, and 27th, and tied on the 10th.
The 110-degree reading measured on July 9th of 2011 tied as the warmest July temperature on record and tied as the third warmest temperature recorded during any month.
Daily record warmest minimum temperatures broken on the 7th, 8th, 10th, and 27th, and tied on the 16th.
Measurable rain was recorded on only two days, but the 2.91 inches of rain that fell on July 12th shattered the previous record rainfall for that date, which had been 1.80 inches in 1926.
13-day streak of maximum daily temperatures above 100 degrees observed from June 29 to July 11.
As of July 31st, the temperature had reached 100 degrees on 38 days during 2011. The record for a year is 50 days in 1980. The current total of 38 days in 2011, is 9 days ahead of the 1980 pace as of July 31st.
Warmest average monthly temperature on record and warmest July on record now 92.9 degrees. Both records were previously 91.9 degrees in July 1980.
Warmest daily minimum temperature on record, now 88 degrees on July 26, 2011. Previous record was 87 degrees on August 16, 1952.
Daily record maximum temperatures set on the 9th, and tied on the 8th and 26th.
The 111-degree reading measured on July 9th tied with four other dates as the 5th warmest July temperature on record, and as the 17th warmest temperature recorded during any month.
Daily record warmest minimum temperatures broken on the 10th, 13th, 14th, 23rd, 26th and 27th, and tied on the 24th.
Only a trace of rain fell, which tied as the 2nd driest July on record. July of 2003 saw zero precipitation and no trace amounts.
The temperature reached 100 degrees on all 31 days during July 2011. A streak of 40 consecutive days with 100 degree readings began on June 22, 2011 and is likely to continue into August. The longest such streak on record at Wichita Falls is 42 days in 1980. The current streak must last only to August 3rd to break the record.
A streak of days without measurable precipitation began on June 15, 2011. Trace amounts fell on 5 days. The streak without measurable precipitation had reached 47 days as of July 31st. If this streak continues through August 8th, it will tie with two other periods as the 9th longest streaks without measurable precipitation. The longest streak was 75 days from December 19, 1913 to March 3, 1914.