What is the hottest month in Iliff, CO?

July is the warmest month, with a normal high of 91°F at Sterling.

What is the coldest month in Iliff, CO?

December is the coldest month, with a normal low of 16°F.

What is the wettest month in Iliff, CO?

July has the most precipitation on average, about 2.67 inches.

Checked Oct 25, 2026

Iliff, CO Climate

1991 to 2020 normals at Sterling, 12 mi from the center of Iliff, elevation 3974 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	42°	16°	0.33 in	--
February	46°	19°	0.54 in	--
March	57°	27°	0.77 in	--
April	64°	35°	1.32 in	--
May	73°	46°	2.24 in	--
June	85°	57°	2.20 in	--
July	91°	62°	2.67 in	--
August	89°	60°	1.52 in	--
September	81°	49°	1.63 in	--
October	66°	35°	1.22 in	--
November	53°	24°	0.45 in	--
December	42°	16°	0.35 in	--
Year	66°		15.24 in	--

Frequently asked questions

What is the hottest month in Iliff, CO?: July is the warmest month, with a normal high of 91°F at Sterling.
What is the coldest month in Iliff, CO?: December is the coldest month, with a normal low of 16°F.
What is the wettest month in Iliff, CO?: July has the most precipitation on average, about 2.67 inches.

Today

Iliff, CO 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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