Houston’s warm and mostly cloudy weather pattern is stuck on repeat this week, but spotty rain chances could return before Halloween.

A brief shot of drier air will remain in place through Monday morning before humidity slowly creeps back into the forecast. Rain chances will stay limited at first, then expand slightly Tuesday and increase Wednesday, especially west of Interstate 45. A few weak disturbances could bring isolated showers later in the week, while the timing of a possible cold front near Halloween remains uncertain.

Monday morning provides one last opportunity to get out early and enjoy low humidity and cooler temperatures. Most neighborhoods will start the day off in the upper 50s to lower 60s, though cooler spots are likely near the Brazos River and in Piney Woods. Along the coast, temperatures will start in the mid- to upper-60s.

Moisture from the Gulf of Mexico will return to the coast by Monday afternoon, but a nearby ridge of high pressure should keep rain chances limited across the Houston area. The best chance for a passing shower will be near Matagorda Bay and over nearby Gulf waters.

Tuesday’s rain chances may extend a little farther north, though showers should still favor areas near and south of Interstate 10. Highs will remain warm, with considerable cloud cover continuing into midweek.

Rain chances increase Wednesday as deeper moisture spreads across Southeast Texas. The best chance for showers and thunderstorms will be west of I-45, though rain may still be hit-or-miss. Some areas could see a shower while others, such as Livingston and Liberty, stay dry.

One current forecast for Houston shows little to no measurable rain through Friday, followed by only light amounts over the weekend and into early November. That’s one model’s projection, but it underscores that any rain may be limited.

A few weak weather disturbances could bring isolated showers later in the workweek, but widespread rain is not expected. Longer-range forecasts have hinted at a cold front near the end of October or start of November, though its timing and effects remain uncertain.

For trick-or-treaters, it’s too soon to know whether the front will bring rain to Houston on Halloween. The forecast should become clearer later in the week.