textproduct: Houston/Galveston

KEY MESSAGES

- Patchy fog possible during the overnight to early morning hours for the next couple of nights.

- Hot and humid conditions expected through mid-week. Make sure to be prepared for the heat if you plan to work or spend time outdoors.

- Isolated to scattered showers and thunderstorms expected this afternoon. Shower/storm chances increase Tuesday and going into the end of the work week.

DISCUSSION

Issued at 1203 AM CDT Mon Jun 1 2026

As we head into meteorological summer (starts June 1st), it's not entirely a surprise that the temperatures have been fairly warm...or dare I say hot. High temperatures on Sunday topped out mainly in the low 90s and that'll remain the case through midweek as ridging aloft continues to prevail. With onshore flow prevailing early in the week, moisture/humidity will gradually increase. Combine the high temperatures in the low 90s and the elevated humidity and we get heat index values peaking in the 99-105*F range through Tuesday. With that in mind, if you have plans to be outdoors during the afternoon hours early this week, be sure to take the proper precautions to keep yourself safe from the heat. Take breaks, stay hydrated, wear light-colored/loose clothing, and ALWAYS ALWAYS ALWAYS look before you lock your vehicle. Don't forget about your pets as well! If the ground is too hot for the palm of your hand, then it is too hot for their paws.

Now there will be potential for some of you to experience a cooling shower/storm in the afternoons. PW values will be on the rise today reaching near or above the 90th percentile (~1.88") by the afternoon. The latest CAMs reflect some isolated WAA showers in the morning, then some isolated to scattered convection developing along the sea breeze in the afternoon. So, rain chances will generally be highest near and south of I-10. Moisture continues to increase going into Tuesday pairing with PVA from shortwaves sneaking underneath the ridge and slightly warmer daytime temperatures. As a result, expecting increased coverage of convection on Tuesday afternoon. We'll also need to monitor the progress of an approaching weak boundary from the northeast as convection may develop along it as it pushes towards the Piney Woods.

The ridge axis begins to slide out to the east on Wednesday as an upper level low over the Baja Peninsula begins its trek eastward. This decrease in subsidence paired with placement into southwesterly flow aloft and PW values remaining elevated means that chances for showers/storms will continue through the work week. Shower/storm chances increase further towards the end of the work week and into the weekend as the upper level low moves in closer. We did get to enjoy a dry weekend this past weekend, but the tradeoff is yet another rainy weekend with rain chances peaking in the afternoon hours. The good news about the increasing rain chances is that this leads to decreasing temperatures. We'll look to trade out the early week high temperatures in the low 90s for high temperatures in the upper 80s by the end of the work week.

Batiste

AVIATION

(12Z TAF Issuance) Issued at 557 AM CDT Mon Jun 1 2026

A mix of VFR, MVFR, IFR ceilings and vsby out there early this morning. Conditions should generally improve to VFR areawide after about 16z. We do anticipate some isolated to scattered late afternoon & early evening shra/tstms associated with the seabreeze today, but probabilities a bit too low to mention in individual TAFs at this point. Look for some late night patchy fog development again tonight...burning off a few hours after sunrise Tue. 47

MARINE

Issued at 1203 AM CDT Mon Jun 1 2026

Light onshore flow and low seas will prevail through late Tuesday. By Wednesday morning, winds will transition to northeasterly to easterly as a weak boundary approaches the waters. Winds transition back to east-southeasterly to southeasterly by Wednesday night with wind speeds occasionally strengthening near the caution flag threshold going into the weekend. The occasionally stronger onshore flow will lead to gradually building seas towards the end of the work week. Another consequence of the occasionally stronger onshore flow is an increased risk of rip currents beginning around midweek. Isolated to scattered showers and storms will be possible daily beginning on Monday, but expect these chances to increase towards the end of the work week.

Batiste

TROPICAL

Issued at 1203 AM CDT Mon Jun 1 2026

Today, June 1st, marks the beginning of the 2026 Atlantic Hurricane Season. The season runs through November 30th. If you haven't already, use this as a reminder to review your action/evacuation plans (or develop one), assemble your disaster supply kits, review your insurance policies, and know where to go to for trusted/reliable information throughout the season. The time to prepare is NOW. Please don't wait for a storm to be named before you start developing a plan or assembling supplies. Early action CAN save lives and property. Even though the season is forecast to have below normal activity, remember that it only takes ONE storm to make it an active season. 1983 featured only four storms for the entire season, but one of those was Hurricane Alicia.

Check out our Hurricane Guide for the 2026 season on our website (www.weather.gov/houston) underneath the "News Headlines" at the top of the page...the guide is available in both English and Spanish. Both guides can also be downloaded in PDF format for offline use. Let's stay vigilant, let's stay safe, let's stay prepared.

Batiste

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 92 75 92 74 / 10 10 30 30 Houston (IAH) 92 77 92 76 / 20 10 40 40 Galveston (GLS) 87 81 87 80 / 10 10 20 20

HGX WATCHES/WARNINGS/ADVISORIES

TX...None. GM...None.