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Insulation in Montgomery: July highs average about 94°F; January lows average about 42°F.
In Montgomery County, July highs average about 94°F and January lows about 42°F, with roughly 51 inches of rain a year. That much heat keeps air conditioners running hard for months, so a yearly tune-up pays off.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Montgomery County, with hail up to 1.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Montgomery County has had 26 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Pauline Road Fire (2025).
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Uneven rooms, high bills and an attic you can see the joists in are the signs; older homes often have far too little.
Attic insulation and air-sealing usually pay back fastest.
These are Montgomery County figures — more about homes in Conroe.
Plantersville · Todd Mission · Panorama Village · Magnolia · Willis · Conroe · New Waverly · Stagecoach