(Bob Rose – LCRA) Latest monthly data tallied for Austin-Bergstrom Airport shows that the month of May was not only the 4th wettest May on record, but it was also the 4th coolest on record. The mean monthly average temperature was 72.4 degrees. Flooding rains and cloud coverage were the culprit as this helped keep afternoon highs well below our average daily temperatures.
For Austin-Camp Mabry however, it was NOT even close to the top 10 coldest. May 2021 was actually only the 59th coolest May on record. One of the reasons that contributed to this drastic difference was because the airport saw nearly double (12.27″) the amount of rain than what fell at Camp Mabry. (7.23″) More rain, means a wetter ground. A wetter ground means more energy is lost to evaporation from the sun vs the sun’s energy heating up a dry surface. Therefore more rain = cooler temperatures.
This cooler and wetter than normal pattern looks to continue into the middle of June as well. Here are the 8 to 14 day temperature and precipitation outlooks through June 14th: