We’re halfway through June, and San Antonio has already exceeded the normal monthly rainfall of 3.28 inches, with 5.7 inches recorded so far in the past 15 days. That puts this month’s start at 10th among San Antonio’s top 15 wettest Junes on record. The wettest start to June was in 1935, when 8.41 inches fell during the first half of the month.
A bit more rain could be added on Tuesday, but the heaviest axis of rainfall has shifted south and east of San Antonio into the Coastal Plains and Winter Garden region. A flood watch issued by the National Weather Service remains in effect for counties east of Interstate 35 and south of U.S. 90. However, San Antonio is not included in the watch.
Warm and muggy air will continue to dominate the region with morning temps on Tuesday only dipping into the mid-70s and then climbing into the low to mid-80s with humidity-driven heat index readings soaring into the low to mid-90s.
Rain chances on Tuesday will be around 40% with more scattered showers, rather than the widespread heavy rain seen on Monday. Not everyone will see rainfall, but where showers develop, they could quickly drop an inch to 2 inches before moving out.
With soil already saturated, any new rainfall will mostly turn into runoff, raising the risk for localized flooding in a few spots…