What is the hottest month in Seneca, SC?

July is the warmest month, with a normal high of 89°F at Clemson Oconee CO AP.

What is the coldest month in Seneca, SC?

January is the coldest month, with a normal low of 34°F.

What is the wettest month in Seneca, SC?

August has the most precipitation on average, about 4.91 inches.

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Checked Oct 25, 2026

Seneca, SC Climate

1991 to 2020 normals at Clemson Oconee CO AP, 3.6 mi from the center of Seneca, elevation 891 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	52°	34°	4.51 in	--
February	56°	36°	4.16 in	--
March	64°	43°	4.67 in	--
April	72°	50°	3.78 in	--
May	79°	59°	3.49 in	--
June	85°	66°	4.40 in	--
July	89°	70°	3.65 in	--
August	87°	69°	4.91 in	--
September	82°	64°	3.68 in	--
October	72°	52°	3.60 in	--
November	62°	42°	3.64 in	--
December	54°	36°	4.50 in	--
Year	71°		48.99 in	--

Frequently asked questions

What is the hottest month in Seneca, SC?: July is the warmest month, with a normal high of 89°F at Clemson Oconee CO AP.
What is the coldest month in Seneca, SC?: January is the coldest month, with a normal low of 34°F.
What is the wettest month in Seneca, SC?: August has the most precipitation on average, about 4.91 inches.

Today

Seneca, SC 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

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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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