Houston will experience “fall lite” conditions this week

The threat of heavy rainfall has passed, and Houston will now enter a period of tranquil weather. Drier air will move into the region today in the wake of Sunday’s front, and we should see moderately cooler nighttime temperatures through Friday or Saturday morning. After this morning, rain chances are basically zero until at least next Monday or Tuesday. Enjoy the sunshine.

Radar estimated rainfall for Friday through Sunday. (NOAA)

Monday

Some clouds remain this morning across the region, but these should mix out as the day progresses to leave us with mostly sunny skies. Winds will be light, out of the north at 5 to 10 mph. With ample sunshine, highs will reach the upper 80s for most of Houston. But as dewpoints fall through the day, we’ll see pleasant conditions this evening, with lows dropping into the mid-60s in Houston, with warmer conditions along the coast, and cooler for inland areas.

Tuesday through Friday

Conditions more or less remain the same for the rest of the work week, with sunny days and highs in the upper 80s. Lows will be in the 60s. Dewpoints will bottom out on Tuesday, so this will feel like our driest day, but humidity levels will remain reasonable for the whole week.

Houston will now enjoy a stretch of moderately drier and cooler weather. (Weather Bell)

Saturday and Sunday

More of an onshore flow returns this weekend, and temperatures will return to more summer-like levels, with highs near 90 degrees and overnight lows in the 70s. The humidity won’t be oppressive, but it will be noticeably higher. After this point we’ll be on the lookout for the next cold front, but most likely an approaching front will stall before entering Houston early the following week.

Heavy rain potential lingers into Saturday for the Houston region

Good morning. Houston faces a couple of more wet days, with the potential for heavy rainfall, before drier and slightly cooler weather arrives early next week.

Thursday

After a quiet night, in terms of rainfall, we’ll see activity increase this morning along the coast and migrate inland during the day. These storms should move along at a decent clip, so we don’t expect major impacts, but some locations could pick up a quick half inch of rainfall. Rain chances are probably greater than 50 percent south of Interstate 10, and less than that for inland areas. With mostly cloudy skies, high temperatures likely will remain confined to the mid-80s for much of the area. Rain chances should slacken late this afternoon, or during the evening.

Friday

This should be a similar day, as our atmosphere remains moist and open to upper-level disturbances moving through. Rain chances are probably 60 to 70 percent during the daytime, with briefly heavy rain and thunderstorms possible. While there is the potential for heavy rainfall on Friday, conditions are more favorable for this to happen closer to Austin than Houston. Storms should weaken during the late afternoon hours, and likely wind down after sunset. Highs will again be in the mid-80s.

Heavy rainfall risk for Friday and Friday night. (NOAA)

Saturday

The first half of the weekend is far enough out that I don’t feel too confident in the specifics, but with elevated moisture levels it does seem possible that we could continue to see the potential for widespread showers, and some heavy rainfall on Saturday—maybe during the morning hours? The bottom line, I think, is that any outdoor plans on Saturday should come with an asterisk. Highs will probably reach the mid-80s with more cloudy skies.

Sunday

The pattern begins to change on Sunday, with atmospheric moisture levels dropping in advance of a frontal passage. As a result, skies should turn partly sunny on Sunday, with rain chances falling during the day. Highs will be in the mid- to upper-80s. The front itself, which is fairly weak, should push into Houston during the late evening hours or so, and move off the coast over night or early on Monday.

Drier days and cooler nights are in the cards for next week. (Weather Bell)

Next week

Next week should be sunny, in the wake of the front, with highs in the 80s and lows in the 60s. The cooldown won’t be too dramatic, but rain will go away for several days, and the air will be noticeably drier. I’ll take it.

Overnight storms should calm things down a bit for Wednesday

A fairly robust line of thunderstorms rumbled through Houston during the wee hours this morning. Several locations recorded wind gusts in excess of 40 mph, but power outages were fairly scattered with only about 20,000 customers affected in the metro area as of sunrise.

The storms generally brought 1 to 2 inches of rainfall, and this was manageable by the area’s flood system. Transtar is reporting no major flood-related issues on area roadways. We’ll see continued rain chances into the weekend, but this morning’s action was probably the most significant we’re going to see for awhile.

Radar estimated rain totals from 6pm CT Tuesday to 6am CT Wednesday. (NOAA)

Wednesday

The squall line with the strongest storms has moved well east of the Houston region, but light showers will likely continue into mid-morning for much of the area. By or before noon, even this light rain should end and we should start to see some partly sunny skies. As a result, high temperatures should push into the upper 80s away from the coast. A few scattered showers will be possible later this evening or during the overnight hours, but for the most part things should be a lot quieter than Tuesday night. Lows will be sticky, likely only falling into the mid-70s.

Thursday

This should be another day with a mix of clouds and sunshine, and temperatures in the mid- to upper-80s. Rain chances are probably about 50 percent, but we shouldn’t see any kind of organized storms like we saw Tuesday night into Wednesday morning.

Friday and Saturday

Healthy rain chances will continue on Friday and Saturday, with both days likely seeing partly to mostly cloudy skies. It’s certainly not going to be wall-to-wall rain, but there should be enough activity that you’ll want to have a contingency plan for any outdoor activities. Highs both days will probably be in the mid-80s. I would guess that most areas see an additional 1 inch of rainfall, or less, from Wednesday afternoon through Saturday.

The front’s effects are expected to be subtle early next week. (Weather Bell)

Sunday and beyond

Will it or won’t it? That’s the question with a cold front approaching our region by Sunday, and possibly pushing through Houston and off the coast. I think there will be enough dry air moving into our region that Sunday should be partly sunny, with diminished rain chances. Temperatures should therefore be a bit cooler to start next week, with models now indicating that a second push of colder air could arrive by mid-week. By Wednesday or Thursday, then, it probably will start to feel more fall-like.

Widespread showers expected today, and for the remainder of the work week

Beginning this morning, Houston has entered a distinctly wetter pattern that should bring 2 to 4 inches of rainfall to much of the region, with higher isolated totals. While area soils are plenty dry and able to handle such rain, the potential for briefly heavy rainfall could lead to a few flooded streets in low-lying areas at some point this week. The wet period may continue into Saturday morning.

It’s a particularly muggy morning, with highs about 5 to 15 degrees warmer than on Monday. (Weather Bell)

Tuesday

So what has changed? After high pressure moved away from the region, much richer moisture has pushed into Texas from the Gulf of Mexico. Additionally, the atmosphere is becoming more unstable as small disturbances begin to move overhead, promoting rising air. As a result of all this we’re going to see fairly widespread showers today across much of the region. With mostly cloudy skies, high temperatures should reach the mid- to upper-80s to go along with light, southeasterly winds. Rain chances become lower by around sunset, but may begin to increase again during the wee hours of Wednesday.

Wednesday

This will be another day with fairly widespread rain showers—about a 60 percent chance—and mostly cloudy skies. Look for highs in the mid-80s. The evening should again provide a bit of a reprieve from shower activity.

Thursday and Friday

At this point it looks like rain chances will peak on Thursday and Friday, with 70 or 80 percent of the area seeing rainfall each day. Highs, accordingly, will be in the mid-80s without much of a cooldown over night.

NOAA rain accumulation forecast for now through Saturday. (Weather Bell)

Saturday, Sunday, and beyond

Beginning on Saturday skies may turn a little more sunny, but we’ll still have a chance for at least some scattered showers. Sunday should be at least partly sunny as well, with highs nudging back into the upper 80s. After that time we’ll be watching to see if a cold front moving down through Texas makes it all the way through Houston and off the coast early next week . Either way, right now, the front looks to be a fairly weak one, with only moderate effects on temperatures and dewpoints. Your sweaters are safe in their closets, for now.