What is the hottest month in Oldham, SD?

July is the warmest month, with a normal high of 83°F at Arlington 1 W.

What is the coldest month in Oldham, SD?

January is the coldest month, with a normal low of 5°F.

What is the wettest month in Oldham, SD?

June has the most precipitation on average, about 4.10 inches.

Checked Oct 25, 2026

Oldham, SD Climate

1991 to 2020 normals at Arlington 1 W, 12 mi from the center of Oldham, elevation 1824 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	24°	5°	0.79 in	--
February	29°	10°	0.76 in	--
March	41°	21°	1.38 in	--
April	57°	33°	2.60 in	--
May	69°	46°	3.97 in	--
June	78°	57°	4.10 in	--
July	83°	61°	3.19 in	--
August	80°	59°	3.08 in	--
September	73°	50°	2.55 in	--
October	58°	36°	2.15 in	--
November	42°	23°	1.09 in	--
December	28°	11°	0.58 in	--
Year	55°		26.24 in	--

Frequently asked questions

What is the hottest month in Oldham, SD?: July is the warmest month, with a normal high of 83°F at Arlington 1 W.
What is the coldest month in Oldham, SD?: January is the coldest month, with a normal low of 5°F.
What is the wettest month in Oldham, SD?: June has the most precipitation on average, about 4.10 inches.

Today

Oldham, SD forecast

Data sources

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

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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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