Climate and monthly weather forecast
Westford, MA

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Weather in January

January, like December, in Westford, Massachusetts, is a wintry winter month, with an average temperature varying between 32°F (0°C) and 19.8°F (-6.8°C). January is the month that records the lowest temperatures, with averages ranging from a high of 32°F (0°C) to a low of 19.8°F (-6.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Westford, Massachusetts, with an average temperature ranging between max 35.1°F (1.7°C) and min 20.7°F (-6.3°C). Stepping into February, Westford records an average high-temperature of a still cold 35.1°F (1.7°C), almost consistent with January. Weather in February »

Weather in March

The first month of the spring, March, is also an icy month in Westford, Massachusetts, with an average temperature ranging between min 28.8°F (-1.8°C) and max 42.4°F (5.8°C). A slight uplift of average high-temperatures is noted in March, with temperatures adjusting from a wintry 35.1°F (1.7°C) in February to a still cold 42.4°F (5.8°C). Weather in March »

Weather in April

April is a mild spring month in Westford, Massachusetts, with an average temperature ranging between min 38.8°F (3.8°C) and max 55.9°F (13.3°C). April's arrival signals an increase in average high-temperatures, moving from March's cold 42.4°F (5.8°C) to a moderate 55.9°F (13.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Westford, Massachusetts, with an average temperature fluctuating between 67.5°F (19.7°C) and 48.7°F (9.3°C). May's arrival is marked by an increase in the average high-temperature, moving from a moderate 55.9°F (13.3°C) in April to a comfortable 67.5°F (19.7°C). Weather in May »

Weather in June

June, the first month of the summer in Westford, is a warm month, with an average temperature fluctuating between 56.1°F (13.4°C) and 75.2°F (24°C). Westford's transition into June sees a mild rise in the average high-temperature, edging from an enjoyable 67.5°F (19.7°C) in May to a moderately hot 75.2°F (24°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Westford, Massachusetts, with an average temperature ranging between min 63.1°F (17.3°C) and max 82.2°F (27.9°C). Westford's warmest temperatures are experienced in July, with average high temperatures of 82.2°F (27.9°C) and lows of 63.1°F (17.3°C). The heat index in July is calculated to be a hot 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer in Westford, is another warm month, with an average temperature ranging between min 61.9°F (16.6°C) and max 80.4°F (26.9°C). August is marked by an average high-temperature of a still moderately hot 80.4°F (26.9°C), almost identical to the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Westford, Massachusetts, with an average temperature fluctuating between 54.9°F (12.7°C) and 72.9°F (22.7°C). The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 80.4°F (26.9°C) to a pleasant 72.9°F (22.7°C). Weather in September »

Weather in October

October, the same as September, in Westford, Massachusetts, is a moderate autumn month, with an average temperature varying between 59.9°F (15.5°C) and 45.5°F (7.5°C). A shift in Westford's weather is observed as September turns into October, with the average high temperature reducing from an agreeable 72.9°F (22.7°C) to a refreshing 59.9°F (15.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Westford, is also a frosty month, with an average temperature ranging between max 48°F (8.9°C) and min 34.9°F (1.6°C). During Westford's transition into November, the average high-temperature lessens, moving from a mild 59.9°F (15.5°C) in October to a chilly 48°F (8.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Westford, Massachusetts, with an average temperature ranging between min 27°F (-2.8°C) and max 37.9°F (3.3°C). Westford observes a minor decrease in the average high-temperature with the arrival of December, falling from November's chilly 48°F (8.9°C) to a wintry 37.9°F (3.3°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Westford?

January, with its average high-temperature of 32°F (0°C) and an average low-temperature of 19.8°F (-6.8°C), holds the record as the coldest month.

How much does it rain in Westford?

In Westford, during the entire year, the rain falls for 140.4 days and collects up to 27.13" (689mm) of precipitation.

When does it snow in Westford?

Months with snowfall are January through May, October through December.

How many days does it snow in Westford?

Throughout the year, there are 35.1 snowfall days, and 24.88" (632mm) of snow is accumulated.

What are the months with the lowest UV index in Westford?

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

What is the most humid month in Westford?

February is the most humid month, with an average relative humidity of 80%.

What is the snowiest month in Westford?

February is the month with the most snowfall in Westford. Snow falls for 8.8 days and accumulates 6.57" (167mm) of snow.

What is the month with the least sunshine in Westford?

February has the least sunshine of the year in Westford, with an average of 4.7h of sunshine.

When is Daylight Saving Time (DST) in Westford?

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.

What is the least humid month in Westford?

April is the least humid month in Westford, Massachusetts, with an average relative humidity of 70%.

When it does not snow in Westford?

June through September are months without snowfall in Westford.

When are the longest days in Westford?

The month with the longest days in Westford, Massachusetts, is June, with an average of 15h and 18min of daylight.

When is the highest UV index in Westford?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the hottest time of year in Westford?

July brings the highest temperatures, with an average high of 82.2°F (27.9°C) and an average low of 63.1°F (17.3°C).

What month has the most sunshine in Westford?

The month with the most sunshine in Westford, Massachusetts, is August, with an average of 10.4h of sunshine.

What is the driest month in Westford?

The month with the least rainfall in Westford, Massachusetts, is September, when the rain falls for 11.8 days and typically collects 1.46" (37mm) of precipitation.

What is the rainiest month in Westford?

The month with the most rainfall is December, when the rain falls for 10.1 days and typically aggregates up to 2.72" (69mm) of precipitation.

What is the month with the shortest days in Westford?

December has the shortest days of the year in Westford, with an average of 9h and 6min of daylight.

Average temperature
Westford, MA

Average temperature - Westford, MA

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure
Westford, MA

Average pressure - Westford, MA

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Westford, MA

Average wind speed - Westford, MA

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average rainfall
Westford, MA

Average rainfall - Westford, MA

The wettest month (with the highest rainfall) is December (2.72").
The driest month (with the least rainfall) is September (1.46").

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Average rainfall days
Westford, MA

Average rainfall days - Westford, MA

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6.6 days).

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Average snowfall
Westford, MA

Average snowfall - Westford, MA

The month with the highest snowfall is February (6.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Westford, MA

Average snowfall days - Westford, MA

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Westford, MA

Average daylight / Average sunshine - Westford, MA

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Westford, MA

Average sunshine days - Westford, MA

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (13.8 days).

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Average UV index
Westford, MA

Average UV index - Westford, MA

The months with the highest UV index are June, 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
Westford, MA

Average visibility - Westford, MA

The months with the highest visibility are January, March, April, May, July, August, October, November and December (6mi).
The months with the lowest visibility are February, June and September (5mi).

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Westford, Massachusetts, USA

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