Climate and monthly weather forecast
Grafton, NH

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Weather in January

January, the same as December, in Grafton, New Hampshire, is a freezing cold winter month, with an average temperature ranging between max 25.9°F (-3.4°C) and min 12.7°F (-10.7°C). January is the coldest month of the year, registering average temperatures as high as 25.9°F (-3.4°C) and as low as 12.7°F (-10.7°C). Weather in January »

Weather in February

February, the last month of the winter in Grafton, is another freezing cold month, with an average temperature varying between 14.4°F (-9.8°C) and 28.8°F (-1.8°C). February's onset sees an average high-temperature of a still freezing cold 28.8°F (-1.8°C), exhibiting a slight fluctuation from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a wintry month in Grafton, New Hampshire, with temperature in the range of an average low of 22.5°F (-5.3°C) and an average high of 37°F (2.8°C). A soft shift in the average high-temperature is noticeable in March, transitioning from a subzero cold 28.8°F (-1.8°C) in February to an icy 37°F (2.8°C). Weather in March »

Weather in April

April is a cool spring month in Grafton, New Hampshire, with an average temperature varying between 51.4°F (10.8°C) and 33.6°F (0.9°C). Grafton's weather experiences a significant temperature rise with the arrival of April, soaring from a wintry 37°F (2.8°C) in March to a cool 51.4°F (10.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Grafton, New Hampshire, with an average temperature ranging between max 64.9°F (18.3°C) and min 44.4°F (6.9°C). May indicates a change in the average high-temperature, moving up from a cool 51.4°F (10.8°C) in April to an enjoyable 64.9°F (18.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Grafton, New Hampshire, with an average temperature fluctuating between 51.3°F (10.7°C) and 72.1°F (22.3°C). In Grafton, stepping into June brings a gentle temperature nudge, moving slightly up from May's enjoyable 64.9°F (18.3°C) to an agreeable 72.1°F (22.3°C). Weather in June »

Weather in July

July is a moderately hot summer month in Grafton, New Hampshire, with an average temperature fluctuating between 79°F (26.1°C) and 57.6°F (14.2°C). July, marked by an average high-temperature of 79°F (26.1°C) and a low-temperature of 57.6°F (14.2°C), is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Grafton, New Hampshire, with an average temperature ranging between max 77.2°F (25.1°C) and min 55.9°F (13.3°C). Grafton's August showcases an average high-temperature of a still moderately hot 77.2°F (25.1°C), hardly distinct from July's 79°F (26.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Grafton, is still a pleasant month, with an average temperature fluctuating between 69.1°F (20.6°C) and 49.5°F (9.7°C). The transition into September subtly indicates a reduction in the average high-temperature, down to an agreeable 69.1°F (20.6°C) from August's moderately hot 77.2°F (25.1°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Grafton, New Hampshire, with an average temperature ranging between max 55.9°F (13.3°C) and min 40.6°F (4.8°C). Grafton's progression into October involves a drop in the average high-temperature, receding from an agreeable 69.1°F (20.6°C) in September to a refreshing 55.9°F (13.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Grafton, New Hampshire, with an average temperature varying between 43.2°F (6.2°C) and 30°F (-1.1°C). Grafton's progression into November involves a drop in the average high-temperature, receding from a mild 55.9°F (13.3°C) in October to a frosty 43.2°F (6.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Grafton, New Hampshire, with an average temperature varying between 21°F (-6.1°C) and 31.5°F (-0.3°C). The start of December comes with a reduction in the average high-temperature, receding from a chilly 43.2°F (6.2°C) in November to a subzero cold 31.5°F (-0.3°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Grafton?

January is the coldest month, with the temperature often reaching an average high of 25.9°F (-3.4°C) and an average low of 12.7°F (-10.7°C).

What are the most humid months in Grafton?

January and February, with an average relative humidity of 86%, are most humid months.

What is the driest month in Grafton?

January is the month with the least rainfall in Grafton, New Hampshire. Rain falls for 4.3 days and accumulates 0.71" (18mm) of precipitation.

How much does it rain in Grafton?

Throughout the year, there are 103.3 rainfall days, and 12.52" (318mm) of precipitation is accumulated.

When does it snow in Grafton?

January through May, October through December are months with snowfall in Grafton, New Hampshire.

How much does it snow in Grafton?

Throughout the year, in Grafton, New Hampshire, there are 43.2 snowfall days, and 14.49" (368mm) of snow is accumulated.

When does it snow the most in Grafton?

The month with the most snowfall is February, when snow falls for 10.1 days and typically aggregates up to 4.02" (102mm) of snow.

What is the month with the least sunshine in Grafton?

With an average of 4h of sunshine, February has the least sunshine of the year in Grafton.

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

The months with the lowest UV index in Grafton, New Hampshire, are February and December, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Grafton?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Grafton, New Hampshire, 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 are the least humid months in Grafton?

The months with the lowest humidity are April and May, with an average relative humidity of 75%.

When is the highest UV index in Grafton?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Grafton, New Hampshire.

When it does not snow in Grafton?

June through September are months without snowfall.

When are the longest days in Grafton?

June has the longest days of the year in Grafton, with an average of 15h and 24min of daylight.

What is the hottest time of year in Grafton?

July, with its average high-temperature of 79°F (26.1°C) and an average low-temperature of 57.6°F (14.2°C), holds the record as the warmest month.

What month has the most sunshine in Grafton?

The month with the most sunshine is August, with an average of 10.1h of sunshine.

What is the wettest month in Grafton?

The month with the most rainfall is October, when the rain falls for 9.7 days and typically aggregates up to 1.54" (39mm) of precipitation.

What is the month with the shortest days in Grafton?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

Average pressure
Grafton, NH

Average pressure - Grafton, NH

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Grafton, NH

Average wind speed - Grafton, NH

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity
Grafton, NH

Average humidity - Grafton, NH

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (75%).

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Average rainfall
Grafton, NH

Average rainfall - Grafton, NH

The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is January (0.71").

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Average rainfall days
Grafton, NH

Average rainfall days - Grafton, NH

The month with the highest number of rainy days is July (11.6 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall
Grafton, NH

Average snowfall - Grafton, NH

The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Grafton, NH

Average snowfall days - Grafton, NH

The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Grafton, NH

Average daylight / Average sunshine - Grafton, NH

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

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Average sunshine days
Grafton, NH

Average sunshine days - Grafton, NH

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is February (16.1 days).

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Average UV index
Grafton, NH

Average UV index - Grafton, NH

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

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Average visibility
Grafton, NH

Average visibility - Grafton, NH

The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).

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Grafton, New Hampshire, USA

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