Climate and monthly weather forecast
Hyannis Port, MA

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Weather in January

January, like December, in Hyannis Port, Massachusetts, is another cold winter month, with an average temperature fluctuating between 30.4°F (-0.9°C) and 38.3°F (3.5°C). January is the month when Hyannis Port experiences its coldest temperatures, averaging a high of 38.3°F (3.5°C) and a low of 30.4°F (-0.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Hyannis Port, Massachusetts, with an average temperature varying between 30.9°F (-0.6°C) and 38.8°F (3.8°C). Hyannis Port's average high-temperature in February is a still cold 38.8°F (3.8°C), indicating a subtle variation from January. Weather in February »

Weather in March

The first month of the spring, March, is still a cold month in Hyannis Port, Massachusetts, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 41.5°F (5.3°C). The transition from February to March sees average high-temperatures adjusting to a still cold 41.5°F (5.3°C), from a not significantly different 38.8°F (3.8°C). Weather in March »

Weather in April

April is a chilly spring month in Hyannis Port, Massachusetts, with an average temperature varying between 42.4°F (5.8°C) and 47.1°F (8.4°C). A soft shift in the average high-temperature is noticeable in April, transitioning from a wintry 41.5°F (5.3°C) in March to a chilly 47.1°F (8.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderate month in Hyannis Port, Massachusetts, with an average temperature fluctuating between 50.9°F (10.5°C) and 55.4°F (13°C). As Hyannis Port welcomes May, the average high-temperature sees a modest rise, transitioning from a chilly 47.1°F (8.4°C) in April to a refreshing 55.4°F (13°C). Weather in May »

Weather in June

June, the first month of the summer in Hyannis Port, is a refreshing month, with an average temperature ranging between max 63.9°F (17.7°C) and min 59.4°F (15.2°C). Hyannis Port in June observes a minor temperature shift, with average high-temperatures adjusting from a refreshing 55.4°F (13°C) in May to a comfortable 63.9°F (17.7°C). Weather in June »

Weather in July

July in Hyannis Port, Massachusetts, is a pleasant summer month, with an average temperature ranging between max 72°F (22.2°C) and min 67.6°F (19.8°C). As July begins, there's a slight increase in the average high-temperature, moving from a refreshing 63.9°F (17.7°C) in June to an agreeable 72°F (22.2°C). Weather in July »

Weather in August

August, the last month of the summer in Hyannis Port, is another pleasant month, with an average temperature ranging between min 68.2°F (20.1°C) and max 72.5°F (22.5°C). The warmest month is August, with an average high-temperature of 72.5°F (22.5°C) and an average low-temperature of 68.2°F (20.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an enjoyable month in Hyannis Port, Massachusetts, with an average temperature fluctuating between 67.3°F (19.6°C) and 62.8°F (17.1°C). September's onset brings an average high-temperature of a refreshing 67.3°F (19.6°C), showing a minute difference from August's 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, in Hyannis Port, Massachusetts, is a moderate autumn month, with an average temperature varying between 54.5°F (12.5°C) and 59.9°F (15.5°C). With the onset of October, Hyannis Port's average high-temperature slightly adjusts, moderately receding from September's enjoyable 67.3°F (19.6°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 Hyannis Port, Massachusetts, with temperature in the range of an average high of 51.3°F (10.7°C) and an average low of 45°F (7.2°C). Hyannis Port's November weather features a light decline in high-temperatures, reducing from a moderate 59.9°F (15.5°C) in October to a fresh 51.3°F (10.7°C). Weather in November »

Weather in December

December, the first month of the winter in Hyannis Port, is also a frosty month, with an average temperature fluctuating between 36.5°F (2.5°C) and 43.7°F (6.5°C). The transition into December involves a small decrease in the average high-temperature, dipping slightly from a fresh 51.3°F (10.7°C) in November to a frosty 43.7°F (6.5°C). Weather in December »

Frequently asked questions

What are the coldest months?

Hyannis Port's January weather, with an average high temperature of 38.3°F (3.5°C) and an average low temperature of 30.4°F (-0.9°C), tends to be the coldest of the year.

How much does it rain?

In Hyannis Port, during the entire year, the rain falls for 157.2 days and collects up to 31.77" (807mm) of precipitation.

When does it snow?

Months with snowfall are January through April and December.

How much does it snow in Hyannis Port?

Throughout the year, there are 24.1 snowfall days, and 6.1" (155mm) of snow is accumulated.

What is the month with the lowest UV index?

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

When does it snow the most?

March is the month with the most snowfall. Snow falls for 5.2 days and accumulates 1.93" (49mm) of snow.

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?

In Hyannis Port, snow does not fall in May through November.

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 most humid month?

The most humid month is July, with an average relative humidity of 84%.

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 are the warmest months?

Hyannis Port notes the warmest temperatures in August, with a average high of 72.5°F (22.5°C) and a low of 68.2°F (20.1°C).

What is the driest month?

The month with the least rainfall in Hyannis Port is August, when the rain falls for 12.4 days and typically collects 1.73" (44mm) of precipitation.

What month has the most sunshine?

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

What is the wettest month?

The month with the most rainfall is October, when the rain falls for 14.5 days and typically aggregates up to 3.7" (94mm) of precipitation.

What is the least humid month?

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

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 4.6h of sunshine.

Average temperature
Hyannis Port, MA

Average temperature - Hyannis Port, MA

The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°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 (30.4°F).

Average pressure
Hyannis Port, MA

Average pressure - Hyannis Port, 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
Hyannis Port, MA

Average wind speed - Hyannis Port, MA

The windiest month (with the highest average wind speed) is January (16.5mph).
The calmest month (with the lowest average wind speed) is August (10.6mph).

Average humidity
Hyannis Port, MA

Average humidity - Hyannis Port, MA

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

Average rainfall
Hyannis Port, MA

Average rainfall - Hyannis Port, MA

The wettest month (with the highest rainfall) is October (3.7").
The driest month (with the least rainfall) is August (1.73").

Average rainfall days
Hyannis Port, MA

Average rainfall days - Hyannis Port, MA

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (10.3 days).

Average snowfall
Hyannis Port, MA

Average snowfall - Hyannis Port, MA

The month with the highest snowfall is March (1.93").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days
Hyannis Port, MA

Average snowfall days - Hyannis Port, MA

The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Hyannis Port, MA

Average daylight / Average sunshine - Hyannis Port, 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 month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days
Hyannis Port, MA

Average sunshine days - Hyannis Port, MA

The month with the most sunshine days is August (17.7 days).
The month with the least sunshine days is February (11.4 days).

Average UV index
Hyannis Port, MA

Average UV index - Hyannis Port, 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
Hyannis Port, MA

Average visibility - Hyannis Port, 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).

Hyannis Port, Massachusetts, USA

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