This year's early bout of heat is likely to blame for the early sightings. The National Weather Service has issued warnings for much of Southeast Texas this week, where an unseasonably intense heat wave is developing. Cities like Houston are expected to hit the mid to upper 90s this week, possibly breaking temperature records for May.

Forecasters expect multiple records to be broken over the next week as an early heat wave settles over the region.

The Texas-Mexico border is scorching under a record-setting heat wave, with temperatures soaring past 100 degrees, making it Earth's hottest spot today.

Heat advisories and extreme heat warnings are in effect west of Houston this week as an unusually early heat wave takes hold. What do these heat alerts mean?

Summer temperatures in Central Texas are predicted to break records this week. You can almost feel the heat coming off these photos.

Some claim that keeping your garage door cracked keeps your home cooler. Here's what experts say about the popular tip and how to stay cool this year.

An extreme heat warning is in effect for San Antonio Wednesday until 9 p.m. The highs on Wednesday and Thursday will be around 105. Highs on Friday and Saturday will be around 102 and the high on Sunday will be 101. And even more records could fall—with the rising temperatures.

A heat wave moving across Texas is expected to peak tomorrow with a high of 101 degrees for Dallas-Fort Worth.