What is the hottest month in Ayer, MA?

July is the warmest month, with a normal high of 83°F at Fitchburg MUNI AP.

What is the coldest month in Ayer, MA?

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

What is the wettest month in Ayer, MA?

October has the most precipitation on average, about 4.48 inches.

Checked Oct 25, 2026

Ayer, MA Climate

1991 to 2020 normals at Fitchburg MUNI AP, 8.6 mi from the center of Ayer, elevation 348 ft.

Average weather by month

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

Month	High	Low	Precip.	Snow
January	34°	16°	2.65 in	--
February	37°	17°	2.82 in	--
March	45°	25°	3.82 in	--
April	58°	35°	3.78 in	--
May	70°	46°	3.60 in	--
June	78°	56°	4.11 in	--
July	83°	62°	3.52 in	--
August	82°	60°	3.36 in	--
September	74°	51°	3.98 in	--
October	62°	40°	4.48 in	--
November	50°	30°	3.58 in	--
December	40°	22°	3.67 in	--
Year	59°		43.37 in	--

Frequently asked questions

What is the hottest month in Ayer, MA?: July is the warmest month, with a normal high of 83°F at Fitchburg MUNI AP.
What is the coldest month in Ayer, MA?: January is the coldest month, with a normal low of 16°F.
What is the wettest month in Ayer, MA?: October has the most precipitation on average, about 4.48 inches.

Today

Ayer, MA 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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