Climate · Berlin

Berlin, MA climate

Berlin has chilly, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 83°, a January night drops to 16°, and about 73 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
83°
155th hottest of 541 Massachusetts towns
January low
16°
175th coldest of 541 Massachusetts towns
Rain + melted snow
49 in
246th wettest of 541 Massachusetts towns
Snow a winter
73 in
62nd snowiest of 534 Massachusetts towns
A normal year

What a year in Berlin feels like

Winter

38° / 19°
Typical high / low · 16 days with an inch or more of snow

Spring

58° / 36°
Typical high / low · Last frost around Apr 29

Summer

81° / 59°
Typical high / low · 15 days reach 90° in a normal year

Fall

62° / 41°
Typical high / low · First frost around Oct 11
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Month by month

Berlin weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet days30-yr range
January35°16°3.6" 18.2"12 16° – 33°
February38°18°3.3" 21.2"11 14° – 34°
March46°25°4.4" 13.7"12 29° – 45°
April59°35°4.3" 1.9"13 43° – 52°
May70°46°3.7" 013 52° – 63°
June78°56°4.3" 012 64° – 70°
July83°61°3.8" 011 68° – 76°
August82°59°4.0" 010 67° – 74°
September74°51°4.0" 010 60° – 67°
October62°40°4.9" 1.1"12 47° – 58°
November51°31°4.0" 1.9"11 35° – 46°
December40°22°4.4" 14.9"12 25° – 41°
Year60°38°48.6"72.9"138

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in Berlin

Berlin gets 49 inches of rain and melted snow a year. October is the wettest month and February the driest. Rain or snow falls on about 138 days a year.

49 in
Rain + melted snow a year
More rain than 84% of U.S. towns
73 in
Snow in a normal winter
More snow than 93% of U.S. towns
138 days
With rain or snow (0.01"+)

Rain + melted snow by month

Inches of water
4.9"

Snowfall by month

Inches of snow
21"
Frost & the growing season

About 164 frost-free days a year

In half of years the last 32° night comes by April 29 and the first one by October 11. That leaves about 164 frost-free days for gardens, shorter than 67% of U.S. towns.

137
nights at or below 32° in a normal year
5
nights below 0° in a normal year
15
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Berlin

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Berlin, 91% of that work is heating and 9% is cooling, so the furnace matters far more than the air conditioner.

91%heating
6,483 heating degree daysMore heating than 66% of U.S. towns
641 cooling degree daysLess cooling than 66% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Around Berlin

Berlin and its neighbors

Berlin borders 6 towns with climate data. January nights across them vary by 0.8°. Clinton has the coldest January nights (16°) and Hudson the hottest July afternoons (84°). Berlin’s January low is 16° and its July high 83°.

Lancaster: January low 16°, July high 84°Sterling: January low 16°, July high 82°Stow: January low 16°, July high 84°Sudbury: January low 17°, July high 84°Southborough: January low 17°, July high 84°Framingham: January low 17°, July high 84°Harvard: January low 16°, July high 84°Westborough: January low 17°, July high 84°Shrewsbury: January low 16°, July high 83°West Boylston: January low 16°, July high 83°Clinton: January low 16°, July high 83°Hudson: January low 16°, July high 84°Marlborough: January low 17°, July high 84°Bolton: January low 16°, July high 84°Northborough: January low 16°, July high 84°Boylston: January low 16°, July high 83°Berlin: January low 16°, July high 83° BerlinClintonHudsonMarlboroughBoltonNorthboroughBoylston
ColderMilder16° to 17°
Clinton15.7° −0.3°
Boylston15.9° −0.1°
Berlin16.0°
Bolton16.1° +0.1°
Hudson16.3° +0.3°
Northborough16.3° +0.3°
Marlborough16.5° +0.5°

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How Berlin compares

Summer heat83° July high
Cooler than 63% of U.S. towns155th hottest of 541 Massachusetts towns
Winter cold16° January low
Colder than 66% of U.S. towns175th coldest of 541 Massachusetts towns
Precipitation49" a year
Wetter than 84% of U.S. towns246th wettest of 541 Massachusetts towns
Snow73" a winter
Snowier than 93% of U.S. towns62nd snowiest of 534 Massachusetts towns
Growing season164 frost-free days
Shorter than 67% of U.S. towns230th shortest of 539 Massachusetts towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+1.8°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Berlin averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.4°). The shift is larger than in 88% of U.S. towns.

❄️ Winter+2.7° now 28°, was 26°
🌷 Spring+1.3° now 47°, was 46°
☀️ Summer+1.7° now 70°, was 68°
🍂 Fall+1.5° now 51°, was 50°

Change by month1991–2020 average minus 1901–2000 average, at Berlin’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 14° to 34°. June is the most reliable, staying within 6°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Berlin’s climate

What is the coldest month in Berlin?

January, with a typical high of 35° and a low of 16°.

What is the hottest month in Berlin?

July, with a typical high of 83° and a low of 61°. About 15 days a year reach 90°.

How much snow does Berlin get?

About 73 inches in a normal winter, most of it in February.

When is the first frost in Berlin?

In half of years the first 32° night comes by October 11, and the last spring frost by April 29.

What is the rainiest month in Berlin?

October, with 4.9 inches of rain and melted snow. The year totals 49 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Berlin itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Worcester Rgnl Airport, MA (15 mi, snow) and Fitchburg Municipal Airport, MA (13 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

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