Climate and monthly weather forecast
West Yarmouth, MA

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Weather in January

January, the same as December, is a wintry winter month in West Yarmouth, Massachusetts, with an average temperature fluctuating between 30.6°F (-0.8°C) and 38.5°F (3.6°C). In West Yarmouth, the lowest temperatures are generally noted in January, averaging a high of 38.5°F (3.6°C) and a low of 30.6°F (-0.8°C). Weather in January »

Weather in February

February, the last month of the winter in West Yarmouth, is another cold month, with an average temperature varying between 38.8°F (3.8°C) and 31.1°F (-0.5°C). As West Yarmouth steps into February, the average high-temperature is measured at a still cold 38.8°F (3.8°C), displaying minor differences from January's 38.5°F (3.6°C). Weather in February »

Weather in March

March, the first month of the spring in West Yarmouth, is also an icy month, with an average temperature varying between 35.6°F (2°C) and 41.4°F (5.2°C). As March takes hold, the average high-temperature is a still wintry 41.4°F (5.2°C), nearly mirroring that of the previous month. Weather in March »

Weather in April

April is a frosty spring month in West Yarmouth, Massachusetts, with an average temperature varying between 47.1°F (8.4°C) and 42.4°F (5.8°C). The arrival of April introduces a minor uplift in high-temperatures, adjusting from a wintry 41.4°F (5.2°C) in March to a chilly 47.1°F (8.4°C). Weather in April »

Weather in May

May, the last month of the spring in West Yarmouth, is a cool month, with an average temperature ranging between min 51.3°F (10.7°C) and max 55°F (12.8°C). As West Yarmouth welcomes May, the average high-temperature displays a subtle shift, adjusting from a frosty 47.1°F (8.4°C) in April to a fresh 55°F (12.8°C). Weather in May »

Weather in June

June, the first month of the summer in West Yarmouth, is an enjoyable month, with an average temperature varying between 63.5°F (17.5°C) and 59.4°F (15.2°C). West Yarmouth's transition into June is noticed by a slight rise in the average high-temperature, advancing from a cool 55°F (12.8°C) in May to a refreshing 63.5°F (17.5°C). Weather in June »

Weather in July

July is an agreeable summer month in West Yarmouth, Massachusetts, with an average temperature ranging between min 67.6°F (19.8°C) and max 71.6°F (22°C). July showcases a minor temperature ascent, adjusting from June's comfortable 63.5°F (17.5°C) to a pleasant 71.6°F (22°C). Weather in July »

Weather in August

August, the last month of the summer in West Yarmouth, is another pleasant month, with an average temperature ranging between max 72.1°F (22.3°C) and min 68.5°F (20.3°C). West Yarmouth, Massachusetts, experiences its highest average temperatures in August, reaching a peak of 72.1°F (22.3°C) and a minimum of 68.5°F (20.3°C). Weather in August »

Weather in September

September, the first month of the autumn in West Yarmouth, is still a refreshing month, with an average temperature varying between 63°F (17.2°C) and 67.1°F (19.5°C). West Yarmouth experiences an average high-temperature of an enjoyable 67.1°F (19.5°C) in September, subtly different from August's 72.1°F (22.3°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in West Yarmouth, Massachusetts, with an average temperature varying between 59.9°F (15.5°C) and 54.7°F (12.6°C). October marks a gentle change in average high-temperature, declining from September's comfortable 67.1°F (19.5°C) to a moderate 59.9°F (15.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in West Yarmouth, Massachusetts, with an average temperature varying between 45.1°F (7.3°C) and 51.3°F (10.7°C). West Yarmouth's progression into November involves a minor drop in the average high-temperature, slightly receding from a mild 59.9°F (15.5°C) in October to a cool 51.3°F (10.7°C). Weather in November »

Weather in December

December, the first month of the winter in West Yarmouth, is also a frosty month, with an average temperature fluctuating between 36.9°F (2.7°C) and 43.7°F (6.5°C). The start of December signals a gentle decrease in the average high-temperature, transitioning from a fresh 51.3°F (10.7°C) in November to a frosty 43.7°F (6.5°C). Weather in December »
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in West Yarmouth?

January brings the lowest temperatures, with an average high of 38.5°F (3.6°C) and an average low of 30.6°F (-0.8°C).

How much does it rain?

In West Yarmouth, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.

When does it snow?

January through April and December are months with snowfall.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.

How much does it snow?

In West Yarmouth, during the entire year, snow falls for 20.8 days and aggregates up to 2.6" (66mm) of snow.

When is the lowest UV index in West Yarmouth?

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

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow?

May through November are months without snowfall.

What are the most humid months?

June and July, with an average relative humidity of 84%, are most humid months.

When are the longest days?

June has the longest days of the year, with an average of 15h and 6min of daylight.

What is the month with the highest UV index?

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

What time of the year is the hottest?

West Yarmouth's temperature records reveal August as the warmest month, marked by average highs of 72.1°F (22.3°C) and lows of 68.5°F (20.3°C).

What is the driest month?

August is the month with the least rainfall. Rain falls for 11.2 days and accumulates 0.94" (24mm) of precipitation.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.8h of sunshine.

What is the wettest month?

October is the month with the most rainfall. Rain falls for 11.6 days and accumulates 1.93" (49mm) of precipitation.

What is the least humid month?

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

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

Average temperature
West Yarmouth, MA

Average temperature - West Yarmouth, MA

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure
West Yarmouth, MA

Average pressure - West Yarmouth, 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).

Average wind speed
West Yarmouth, MA

Average wind speed - West Yarmouth, MA

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity
West Yarmouth, MA

Average humidity - West Yarmouth, MA

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

Average rainfall
West Yarmouth, MA

Average rainfall - West Yarmouth, MA

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

Average rainfall days
West Yarmouth, MA

Average rainfall days - West Yarmouth, MA

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

Average snowfall
West Yarmouth, MA

Average snowfall - West Yarmouth, MA

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days
West Yarmouth, MA

Average snowfall days - West Yarmouth, MA

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
West Yarmouth, MA

Average daylight / Average sunshine - West Yarmouth, MA

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

Average sunshine days
West Yarmouth, MA

Average sunshine days - West Yarmouth, MA

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

Average UV index
West Yarmouth, MA

Average UV index - West Yarmouth, 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).

Average visibility
West Yarmouth, MA

Average visibility - West Yarmouth, 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).

West Yarmouth, Massachusetts, USA

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