Eric Berger

As expected, higher moisture levels are pushing into the Houston region from the Gulf of Mexico today. This will lead to storms across the area, possibly widespread, as temperatures warm into the 80s later this morning. This provides the potential for a quick pickup of 1 to 3 inches of rain for a few areas, and depending upon the rainfall rates we could see some temporary street flooding.

The bottom line is that if you plan to be out and about from around noon to 6pm, check the radar, and be weather-aware. We’re not expecting widespread problems, but you should definitely be prepared for storms to pop up quickly, and drop a lot of rain. Monday will probably be similar (although with less coverage) before rain chances begin to dial down significantly on Tuesday.

Anyone who has lived in Houston knows there are basically two choices for weather during the months of July, August, and the beginning of September: Hot, sunny, and humid; or Warm, wet, and still humid. Houston has experienced both of these extremes already in July, with three days of highs in the upper 90s, followed by a day of 70s and heavy rain on the July 4th holiday. Over the next several days we’ll lean more toward the warmer and wetter variety, with an eye toward more widespread, heavier rainfall returning Sunday.

Friday

Storms have remained offshore this morning, and some slightly drier air has worked its way into the Houston region. However, as temperatures warm into the mid- to upper-80s later this morning, and the sea breeze gets going, I expect we’ll see some decent rain showers this afternoon, with a few heavy cells setting up (like we saw on Thursday, with a narrow, but heavy band of showers near Highway 288 and the South Sam Houston Tollway). I don’t expect significant problems. Look for highs around 90 degrees, or a bit warmer depending on how much sunshine your area sees this afternoon.

Saturday

I expect Saturday will be a lot like Friday, although with a few more clouds, and slightly reduced rainfall chances. The potential for heavier rainfall remains low, and any intense storms should be fairly scattered in nature. Highs in the low 90s.

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We’re coming to the end of June in Houston, and the city’s official temperature has peaked at 98 degrees so far. Although I don’t anticipate that the city’s temperatures will hit 100 degrees over the next week, as we get into July the overall probability of hitting the century mark will rise. With that in mind, here is some 100-degree day climatology for the city of Houston:

• Earliest 100-degree day: June 2, 2011
• Average first 100-degree day: July 24
• Average number of 100-degree days: 5

The absence of 100-degree days in June is probably a decent sign for the rest of the summer in terms of extreme heat, but alas there are few guarantees when it comes to weather.

Tuesday

Moisture levels are lower than Monday, so I expect few if any rain showers across the metro area today. Most probably, we will see hot and sunny conditions with high temperatures in the low- to mid-90s. If you picked today to skip work and head for the beach, you made a good choice weather-wise.

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Summer roared back to Houston this weekend, with highs in the mid-90s across much of the region with mostly sunny skies. We’ll have more of the same this week, albeit with some slight afternoon rain chances on some days and a few more clouds to break up the sunshine. We’re not quite into the dead of summer—that typically comes about five or six weeks from now.

Monday

A bit of a tricky forecast today, because there is the potential for some rainfall even though most people are probably just going to see some clouds. A key factor today will be a plume of moisture moving into the central and southern Texas coast, which will lead to some pretty decent chances along the Coastal Bend. For Houston, the question is how far east these elevated moisture levels will get, i.e. will it get all the way to Galveston Bay?

As as result, rain chances for the western half of the Houston region are probably in the 20 to 40 percent range, whereas there is a lower probability in the eastern half (i.e. to the east half of Interstate 45) probably closer to 10 to 20 percent. Temperatures will also depend upon cloud cover, but I’m pretty sure we can count on the mercury reaching into the low 90s, at least.

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