What is the hottest month in Christopher, IL?

July is the warmest month, with a normal high of 88°F at Rend Lake Dam.

What is the coldest month in Christopher, IL?

January is the coldest month, with a normal low of 22°F.

What is the wettest month in Christopher, IL?

April has the most precipitation on average, about 5.43 inches.

Checked Oct 25, 2026

Christopher, IL Climate

1991 to 2020 normals at Rend Lake Dam, 6.1 mi from the center of Christopher, elevation 455 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	40°	22°	3.18 in	--
February	44°	25°	2.80 in	--
March	55°	35°	4.21 in	--
April	68°	45°	5.43 in	--
May	76°	56°	5.07 in	--
June	86°	65°	4.48 in	--
July	88°	68°	3.96 in	--
August	87°	66°	3.35 in	--
September	81°	58°	3.22 in	--
October	69°	46°	3.44 in	--
November	55°	35°	3.97 in	--
December	44°	27°	2.89 in	--
Year	66°		46.00 in	--

Frequently asked questions

What is the hottest month in Christopher, IL?: July is the warmest month, with a normal high of 88°F at Rend Lake Dam.
What is the coldest month in Christopher, IL?: January is the coldest month, with a normal low of 22°F.
What is the wettest month in Christopher, IL?: April has the most precipitation on average, about 5.43 inches.

Today

Christopher, IL 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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