Not sorry to be saying goodbye to a soggy September

Well, we made it through the end of September. And a strange month it was. No tropical storms or hurricanes hit Texas, and yet it has been one of the wettest months in the state’s history. Much of the state received 200 to 400 percent normal levels of rainfall, including all coastal areas of the Houston region (Galveston will record its second wettest September ever, and third wettest month of all time).

Departure from normal rainfall for the last 30 days. (NOAA)

As a result, at the end of a summer in which no tropical storms or hurricanes moved into, or near Texas, the state finishes the hottest part of the year with just eight percent of the state in a “severe” or worse drought. This is a really healthy posture to be in, compared to typical years for Texas at the end of September.

U.S. Drought Monitor.

That does not mean September has been particularly fun. Heavy rainfall during the last month has, on at least three occasions, brought significant flooding to Galveston Island and other coastal areas. For much of the region, nearly all of September was a soggy, humid mess with cloudy days and steamy nights. Speaking personally, I am not sorry to see it in the rear view mirror. Now, onto the forecast.

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A brief “almost fall” reprieve today before another wet weekend

Well, the front made it through. It’s not a strong front, and it won’t last too long, but at least it should clear out our weather for a day or a bit longer. I guess we’ll have to take what we can get after such a soggy September.

Thursday

This should be a pretty nice day, with highs only in the low- to mid-80s, albeit with partly to mostly cloudy skies. Light northerly winds will bring some drier air into the region as well, and this should keep rain showers mostly at bay—although we can’t rule out some lingering activity along the coast. Low temperatures tonight will probably be the coldest they’ve been this fall, with the northern half of Houston likely falling just below 70 degrees. Again, this isn’t a particularly strong front for late September, but this evening will probably feel pretty nice outside.

Low temperature forecast for Thursday night/Friday morning. (National Weather Service)

Friday

After the cooler start, the region will see the return of moisture from the Gulf of Mexico on Friday, and this should allow some showers and thunderstorms to start spreading into coastal areas, and possibly inland later in the day. With partly sunny skies and highs in the mid-80s, we don’t expect anything too widespread or too heavy in terms of rainfall.

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More storms Wednesday ahead of a weak cool front

Thunderstorms popped up along the coast early this morning, and now some of the heavier rains have migrated inland. These pre-sunrise storms reflect what is likely to be a messy forecast for the next several days as a weak cold front pushes into the area, just beyond Houston offshore, and then likely moves backward through Houston. Add it all up, and there will be a healthy chance of storms over the next several days—along with a brief interregnum of drier and cooler air. Hopefully.

Wednesday

This morning’s storms are likely a precursor for showers and thunderstorms moving along a front that, near sunrise, is approaching the Interstate 35 corridor in central Texas. This should lead to elevated rain chances this afternoon and evening across most of the metro area, with storms moving from northwest to southeast. In terms of accumulation, most areas will probably see 0.5 to 1.5 inches of rainfall between Wednesday and Thursday morning, which could cause some brief problems on roadways but should for the most part be manageable.

Thursday

Some drier air should work its way into Houston behind the front, especially for areas well to the west and north of downtown Houston. Lows in the 60s are possible for these areas, but unlikely within Harris County or the city of Houston itself.

Thursday morning’s low temperatures are almost fall-like outside of Houston. (National Weather Service)

Any reprieve won’t last long, however, as the front should lift back onshore Thursday, likely leading to elevated rain chances during the afternoon or evening hours. (We do not expect these storms to be as heavy as those on Wednesday). Daytime highs on Thursday should be in the low- to mid-80s, and we sincerely hope everyone enjoys their 12 hours of almost fall-like weather. Not that we’re bitter about the lack of a strong fall cold front, or anything.

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Mostly dreary weather returns to Houston for awhile

All things considered, after a long, hot, and wet summer, Monday was pretty nice. We had ample sunshine, highs in the upper 80s, and some drier weather. It offered an all-too-brief taste of what is eventually coming—fall, which may arrive toward the end of the first week of October. But now it’s over and we’re headed back into a wet and humid period for awhile. We’re not too concerned about the potential for flooding this week, but the dreary quotient for the next several days will be pretty high.

Tuesday

As Gulf moisture resumes flowing into the region today, rain showers will also spread over the area. I’d peg rain chances at about 50 percent today, with mostly cloudy skies and highs in the upper 80s. Fairly quick movements of storms should limit any concerns about heavy rainfall lasting too long.

Wednesday and Thursday

The midweek is … interesting. As a cold front approaches the area from the northwest, rain will probably spread throughout much of the region on Wednesday. It’s not clear whether the front itself will reach into Houston, or stall just before or after pushing into the region. If you’re lucky (and if you’re on the west side of the city), you may see a day or so of drier weather on Thursday. But it’s not something I’d count on.

Cold front position at 10pm Wednesday, per the NAM model. Will it push any further to the east? (Weather Bell)

Basically, we can expect rainfall ahead of and along the front, and some brief drying after the front if it pushes through where you live. However, even if it does, the front will probably pull back (westward) across the region on Friday. Highs in the mid- to upper-80s.

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