Climate and monthly weather forecast
Harwich, MA

Weather in January

January, like December, in Harwich, Massachusetts, is another cold winter month, with an average temperature varying between 31.6°F (-0.2°C) and 39°F (3.9°C). January and February, with an average high-temperature of 39°F (3.9°C), are the coldest months. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Harwich, Massachusetts, with an average temperature fluctuating between 39°F (3.9°C) and 32°F (0°C). January and February, with an average high-temperature of 39°F (3.9°C), are the coldest months. Weather in February »

Weather in March

The first month of the spring, March, is also a wintry month in Harwich, Massachusetts, with an average temperature varying between 35.4°F (1.9°C) and 41°F (5°C). In March, the average high-temperature is relatively the same as in February - a still cold 41°F (5°C). Weather in March »

Weather in April

April in Harwich, Massachusetts, is a chilly spring month, with an average temperature varying between 46.9°F (8.3°C) and 42.4°F (5.8°C). In April, the average high-temperature marginally rises from a cold 41°F (5°C) in March to a chilly 46.9°F (8.3°C). Weather in April »

Weather in May

May, the last month of the spring in Harwich, is a cool month, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 50.5°F (10.3°C). In Harwich, the average high-temperature in May slightly increases from a chilly 46.9°F (8.3°C) in April to a fresh 54.3°F (12.4°C). Weather in May »

Weather in June

The first month of the summer, June, is an enjoyable month in Harwich, Massachusetts, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 58.8°F (14.9°C). In Harwich, Massachusetts, the average high-temperature in June slightly increases from a fresh 54.3°F (12.4°C) in May to a comfortable 63°F (17.2°C). Weather in June »

Weather in July

July in Harwich, Massachusetts, is an agreeable summer month, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 67.1°F (19.5°C). In July, the average high-temperature marginally rises from a comfortable 63°F (17.2°C) in June to an agreeable 70.3°F (21.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Harwich, Massachusetts, with an average temperature varying between 71.6°F (22°C) and 68.2°F (20.1°C). With an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C), August is the warmest month. Weather in August »

Weather in September

September, the first month of the autumn in Harwich, is also an enjoyable month, with an average temperature ranging between min 63.3°F (17.4°C) and max 66.6°F (19.2°C). In Harwich, Massachusetts, the average high-temperature in September is almost the same as in August - an enjoyable 66.6°F (19.2°C). Weather in September »

Weather in October

October, the same as September, in Harwich, Massachusetts, is a moderate autumn month, with an average temperature varying between 54.9°F (12.7°C) and 59.5°F (15.3°C). In Harwich, the average high-temperature in October slightly decreases from an enjoyable 66.6°F (19.2°C) in September to a moderate 59.5°F (15.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Harwich, is also a fresh month, with an average temperature varying between 45.5°F (7.5°C) and 51.3°F (10.7°C). In Harwich, Massachusetts, the average high-temperature in November marginally drops from a mild 59.5°F (15.3°C) in October to a fresh 51.3°F (10.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Harwich, Massachusetts, with an average temperature ranging between min 37.6°F (3.1°C) and max 44.4°F (6.9°C). In Harwich, the average high-temperature in December marginally drops from a cool 51.3°F (10.7°C) in November to a chilly 44.4°F (6.9°C). Weather in December »
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FAQ

What are the coldest months in Harwich?

January and February, with an average high-temperature of 39°F (3.9°C), are the coldest months in Harwich.

How much does it rain in Harwich?

Throughout the year, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

When does it snow in Harwich?

Months with snowfall are January through April, November and December.

How much does it snow in Harwich?

Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) of snow is accumulated.

What is the month with the lowest UV index in Harwich?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harwich.

When does it snow the most in Harwich?

February is the month with the most snowfall in Harwich. Snow falls for 5 days and accumulates 1.38" (35mm) of snow.

When is Daylight Saving Time (DST) in Harwich?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Harwich, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Harwich?

In Harwich, Massachusetts, snow does not fall in May through October.

What is the most humid month in Harwich?

June and July, with an average relative humidity of 85%, are most humid months in Harwich, Massachusetts.

When are the longest days in Harwich?

The month with the longest days in Harwich, Massachusetts, is June, with an average of 15h and 9min of daylight.

What is the month with the highest UV index in Harwich?

July and August, with an average maximum UV index of 6, are months with the highest UV index in Harwich.

What is the warmest month in Harwich?

August is the warmest month, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 68.2°F (20.1°C).

What month has the most sunshine in Harwich?

August has the most sunshine of the year, with an average of 10.7h of sunshine.

What is the wettest month in Harwich?

October is the month with the most rainfall in Harwich, Massachusetts. Rain falls for 13.4 days and accumulates 2.83" (72mm) of precipitation.

What is the least humid month in Harwich?

November is the least humid month, with an average relative humidity of 74%.

What is the driest month in Harwich?

November is the month with the least rainfall in Harwich, Massachusetts. Rain falls for 11.5 days and accumulates 1.46" (37mm) of precipitation.

What is the month with the shortest days in Harwich?

With an average of 9h and 13min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Harwich?

With an average of 4.3h of sunshine, December has the least sunshine of the year.

Average temperature
Harwich, MA

Average temperature - Harwich, MA

The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).

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Average pressure
Harwich, MA

Average pressure - Harwich, MA

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Harwich, MA

Average wind speed - Harwich, MA

The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).

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Average humidity
Harwich, MA

Average humidity - Harwich, MA

The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).

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Average rainfall
Harwich, MA

Average rainfall - Harwich, MA

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").

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Average rainfall days
Harwich, MA

Average rainfall days - Harwich, MA

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall
Harwich, MA

Average snowfall - Harwich, MA

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Harwich, MA

Average snowfall days - Harwich, MA

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Harwich, MA

Average daylight / Average sunshine - Harwich, MA

The month with the longest days is June (Average daylight: 15h and 9min).
The month with the shortest days is December (Average daylight: 9h and 13min).

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days
Harwich, MA

Average sunshine days - Harwich, MA

The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).

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Average UV index
Harwich, MA

Average UV index - Harwich, MA

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Harwich, MA

Average visibility - Harwich, MA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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