What is the hottest month in Markham, TX?

August is the warmest month, with a normal high of 91°F at Bay City Wtr Wks.

What is the coldest month in Markham, TX?

January is the coldest month, with a normal low of 43°F.

What is the wettest month in Markham, TX?

September has the most precipitation on average, about 5.79 inches.

Checked Oct 25, 2026

Markham, TX Climate

1991 to 2020 normals at Bay City Wtr Wks, 5.7 mi from the center of Markham, elevation 52 ft.

Average weather by month

Select a month for daily normals and last year's weather

Month	High	Low	Precip.	Snow
January	63°	43°	3.76 in	--
February	67°	47°	2.53 in	--
March	72°	53°	3.03 in	--
April	78°	59°	3.24 in	--
May	84°	66°	4.44 in	--
June	89°	72°	5.69 in	--
July	91°	73°	4.51 in	--
August	91°	73°	4.27 in	--
September	88°	69°	5.79 in	--
October	81°	60°	4.24 in	--
November	72°	51°	4.00 in	--
December	65°	45°	3.56 in	--
Year	78°		49.06 in	--

Frequently asked questions

What is the hottest month in Markham, TX?: August is the warmest month, with a normal high of 91°F at Bay City Wtr Wks.
What is the coldest month in Markham, TX?: January is the coldest month, with a normal low of 43°F.
What is the wettest month in Markham, TX?: September has the most precipitation on average, about 5.79 inches.

Today

Markham, TX forecast

Data sources

U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
U.S. Climate Normals 1991-2020 (daily) and GHCN-Daily via Access Data ServiceNOAA National Centers for Environmental Information · Official site

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About this data

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Climate normals are 30-year averages measured at one weather station, which may be miles from the place named here or at a different elevation.

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