What is the hottest month in Naples, IL?

July is the warmest month, with a normal high of 87°F at Winchester.

What is the coldest month in Naples, IL?

January is the coldest month, with a normal low of 18°F.

What is the wettest month in Naples, IL?

June has the most precipitation on average, about 4.99 inches.

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Checked Oct 25, 2026

Naples, IL Climate

1991 to 2020 normals at Winchester, 12 mi from the center of Naples, elevation 551 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	36°	18°	2.26 in	--
February	41°	21°	2.14 in	--
March	53°	31°	3.06 in	--
April	65°	41°	4.40 in	--
May	75°	52°	4.81 in	--
June	84°	62°	4.99 in	--
July	87°	65°	3.97 in	--
August	86°	63°	3.47 in	--
September	80°	54°	3.03 in	--
October	68°	43°	3.09 in	--
November	53°	32°	2.75 in	--
December	41°	23°	2.43 in	--
Year	64°		40.40 in	--

Frequently asked questions

What is the hottest month in Naples, IL?: July is the warmest month, with a normal high of 87°F at Winchester.
What is the coldest month in Naples, IL?: January is the coldest month, with a normal low of 18°F.
What is the wettest month in Naples, IL?: June has the most precipitation on average, about 4.99 inches.

Today

Naples, 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

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.

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