Congratulations, Houston. We’ve reached the longest day of the year—14 hours, 3 minutes, and 30 seconds. From this point on, days will very slowly get shorter as the Northern Hemisphere begins to tilt away from the Sun. In six months, our day length will be just 10 hours, 14 minutes, and 3 seconds.
Of course Houston doesn’t reach the peak of summer for another five weeks, with the warmest period typically coming from late July through the first half of August. This is due in large part to weather patterns, and a lag in heating of the Gulf of Mexico, which always modifies our region’s weather when the winds are blowing onshore (cooling us during this time of year, and warming us in the winter). Bottom line? We’ve begun the march toward fall, but it’s still a long, long ways away.
Speaking of summer, we’ll feel it today, with highs in the mid-90s and high humidity pushing the heat index into “heat advisory” levels out there. With partly sunny skies, please avoid being outdoors during the middle of the day if possible. Temperatures tonight will not cool much, only falling to around 80 degrees.
This day should be a lot like Friday, albeit perhaps just slightly cooler. Effectively, that won’t mean much with more partly sunny skies. Rain chances aren’t zero, but they’re probably only 10 to 20 percent, and any showers that do develop will likely be fleeting.
Sunday, Monday, and Tuesday
A reprieve from the really hot weather should arrive by Sunday, as high pressure retreats and moisture levels rise high enough such that it won’t take too much a spark to generate showers. Rain chances—at least the potential for heavy rain—will probably peak from Sunday night through Monday, but overall I’m not particularly concerned about this period from a flooding perspective. Most of the region will probably get 0.25 to 0.75 inches of rain (with a full bullseyes of 1-2 inches, probably) through Tuesday. Rain chances are probably a bit better for inland areas north of Interstate 10. Clouds and intermittent rain showers should limit highs to the 90 to 93 degree range, for the most part.
Wednesday and beyond
The middle of next week should see the return of mostly sunny days, and highs in the mid-90s.