Climate and monthly weather forecast
Siasconset, MA

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Weather in January

January, like December, in Siasconset, Massachusetts, is a wintry winter month, with an average temperature fluctuating between 32.9°F (0.5°C) and 40.3°F (4.6°C). Siasconset's average high-temperature in January is a cold 40.3°F (4.6°C), indicating a subtle variation from December. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Siasconset, Massachusetts, with an average temperature fluctuating between 32.5°F (0.3°C) and 39.7°F (4.3°C). Siasconset witnesses the coldest weather in February, with temperatures averaging a high of 39.7°F (4.3°C) and a low of 32.5°F (0.3°C). Weather in February »

Weather in March

March, the first month of the spring in Siasconset, is also a wintry month, with an average temperature fluctuating between 41.9°F (5.5°C) and 36.1°F (2.3°C). At the onset of March, Siasconset records an average high-temperature of a still cold 41.9°F (5.5°C), showing little deviation from the preceding month. Weather in March »

Weather in April

April is a chilly spring month in Siasconset, Massachusetts, with an average temperature ranging between max 47.5°F (8.6°C) and min 42.8°F (6°C). April's arrival coincides with a marginal rise in the average high-temperature, moving from March's wintry 41.9°F (5.5°C) to a frosty 47.5°F (8.6°C). Weather in April »

Weather in May

May, the last month of the spring in Siasconset, 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). May brings a slight elevation in the average high-temperature, transitioning from April's chilly 47.5°F (8.6°C) 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 Siasconset, Massachusetts, with an average temperature fluctuating between 58.6°F (14.8°C) and 62.6°F (17°C). June's onset is marked by a subtle temperature increase, moving from a cool 54.3°F (12.4°C) in May to a refreshing 62.6°F (17°C). Weather in June »

Weather in July

July in Siasconset, Massachusetts, is a pleasant summer month, with temperature in the range of an average low of 67.3°F (19.6°C) and an average high of 70.5°F (21.4°C). With the start of July, the average high-temperature marginally shifts from June's refreshing 62.6°F (17°C) to an agreeable 70.5°F (21.4°C). Weather in July »

Weather in August

August, the last month of the summer in Siasconset, is also an agreeable month, with an average temperature varying between 68.7°F (20.4°C) and 72.1°F (22.3°C). August is the month when Siasconset experiences its warmest temperatures, averaging a high of 72.1°F (22.3°C) and a low of 68.7°F (20.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a comfortable month in Siasconset, Massachusetts, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 63.3°F (17.4°C). A minor adjustment in Siasconset's average high-temperature is noted with the start of September, touching an enjoyable 67.6°F (19.8°C) from August's 72.1°F (22.3°C). Weather in September »

Weather in October

October, like September, in Siasconset, Massachusetts, is another refreshing autumn month, with temperature in the range of an average high of 60.8°F (16°C) and an average low of 56.3°F (13.5°C). In Siasconset, the average high-temperature in October gently drops from 67.6°F (19.8°C) in September to a still refreshing 60.8°F (16°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Siasconset, Massachusetts, with an average temperature ranging between max 52.7°F (11.5°C) and min 46.9°F (8.3°C). During the shift to November, Siasconset records a mild decrease in average high-temperature, moving from a refreshing 60.8°F (16°C) in October to a cool 52.7°F (11.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Siasconset, Massachusetts, with an average temperature ranging between min 38.7°F (3.7°C) and max 45.5°F (7.5°C). The shift from November to December coincides with a small decrease in the average high-temperature, down to a frosty 45.5°F (7.5°C) from a cool 52.7°F (11.5°C). Weather in December »
Updated: Jun 4, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the least humid month?

January, November and December, with an average relative humidity of 75%, are the least humid months.

How much does it rain?

In Siasconset, during the entire year, the rain falls for 153.1 days and collects up to 26.65" (677mm) of precipitation.

When does it snow?

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

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 5.8 days and typically aggregates up to 1.06" (27mm) of snow.

How many days does it snow?

In Siasconset, during the entire year, snow falls for 17.1 days and aggregates up to 3.23" (82mm) of snow.

What are the months with the lowest UV index?

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

What part of the year is the coldest?

February, recording an average high temperature of 39.7°F (4.3°C) and a low temperature of 32.5°F (0.3°C), is Siasconset's coldest month.

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?

April through October are months without snowfall.

When are the longest days?

The month with the longest days is June, 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 86%.

What are the months with the most sunshine?

July and August, with an average of 10.7h of sunshine, are months with the most sunshine.

What are the months with the highest UV index?

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

What is the hottest time of year?

August, known for its average high temperature of 72.1°F (22.3°C) and an average low temperature of 68.7°F (20.4°C), is the warmest month.

What is the wettest month in Siasconset?

The month with the most rainfall is October, when the rain falls for 13.8 days and typically aggregates up to 3.27" (83mm) of precipitation.

What is the driest month?

The month with the least rainfall is November, when the rain falls for 12.1 days and typically collects 1.77" (45mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 4.3h of sunshine.

Average temperature
Siasconset, MA

Average temperature - Siasconset, MA

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is February (39.7°F).

The month with the highest average low temperature is August (68.7°F).
The coldest month (with the lowest average low temperature) is February (32.5°F).

Average pressure
Siasconset, MA

Average pressure - Siasconset, MA

The months with the highest atmospheric pressure are September and November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Siasconset, MA

Average wind speed - Siasconset, MA

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest month (with the lowest average wind speed) is August (11.8mph).

Average humidity
Siasconset, MA

Average humidity - Siasconset, MA

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, November and December (75%).

Average rainfall
Siasconset, MA

Average rainfall - Siasconset, MA

The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days
Siasconset, MA

Average rainfall days - Siasconset, MA

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (9.2 days).

Average snowfall
Siasconset, MA

Average snowfall - Siasconset, MA

The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Siasconset, MA

Average snowfall days - Siasconset, MA

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Siasconset, MA

Average daylight / Average sunshine - Siasconset, 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 18min).

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

Average sunshine days
Siasconset, MA

Average sunshine days - Siasconset, MA

The month with the most sunshine days is August (16.5 days).
The month with the least sunshine days is January (11.3 days).

Average UV index
Siasconset, MA

Average UV index - Siasconset, 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 and December (UV index 2).

Average visibility
Siasconset, MA

Average visibility - Siasconset, 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).

Siasconset, Massachusetts, USA

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