Climate and monthly weather forecast
Grafton, NY

Weather in January

January, like December, is another subzero cold winter month in Grafton, New York, with an average temperature fluctuating between 16.5°F (-8.6°C) and 28.6°F (-1.9°C). The coldest month is January, with an average high-temperature of 28.6°F (-1.9°C) and an average low-temperature of 16.5°F (-8.6°C). Weather in January »

Weather in February

February, the last month of the winter in Grafton, is another freezing cold month, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 18°F (-7.8°C). In Grafton, the average high-temperature in February is essentially the same as in January - a still freezing cold 31.6°F (-0.2°C). Weather in February »

Weather in March

March, the first month of the spring in Grafton, is a cold month, with an average temperature varying between 25.5°F (-3.6°C) and 40.6°F (4.8°C). In March, the average high-temperature rises from a subzero cold 31.6°F (-0.2°C) in February to a cold 40.6°F (4.8°C). Weather in March »

Weather in April

April in Grafton, New York, is a fresh spring month, with an average temperature varying between 36°F (2.2°C) and 54°F (12.2°C). In April, the average high-temperature increases from a cold 40.6°F (4.8°C) in March to a cool 54°F (12.2°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Grafton, New York, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 67.3°F (19.6°C). In Grafton, the average high-temperature in May rises from a cool 54°F (12.2°C) in April to a comfortable 67.3°F (19.6°C). Weather in May »

Weather in June

June, the first month of the summer in Grafton, is a warm month, with an average temperature ranging between max 74.8°F (23.8°C) and min 53.2°F (11.8°C). In June, the average high-temperature slightly increases from a comfortable 67.3°F (19.6°C) in May to a warm 74.8°F (23.8°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Grafton, New York, with an average temperature ranging between min 59°F (15°C) and max 81°F (27.2°C). With an average high-temperature of 81°F (27.2°C) and an average low-temperature of 59°F (15°C), July is the warmest month. The average heat index in July is appraised at a tropical 86°F (30°C). Weather in July »

Weather in August

August, the last month of the summer in Grafton, is another warm month, with an average temperature varying between 57.6°F (14.2°C) and 78.6°F (25.9°C). In August, the average high-temperature is almost the same as in July - a still warm 78.6°F (25.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Grafton, New York, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 71.2°F (21.8°C). In Grafton, the average high-temperature in September slightly decreases from a warm 78.6°F (25.9°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Grafton, New York, with an average temperature fluctuating between 57.9°F (14.4°C) and 42.8°F (6°C). In October, the average high-temperature drops from a pleasant 71.2°F (21.8°C) in September to a mild 57.9°F (14.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Grafton, New York, with an average temperature fluctuating between 45°F (7.2°C) and 31.8°F (-0.1°C). In Grafton, New York, the average high-temperature in November decreases from a moderate 57.9°F (14.4°C) in October to a frosty 45°F (7.2°C). Weather in November »

Weather in December

December, the first month of the winter in Grafton, is also a wintry month, with temperature in the range of an average high of 34.2°F (1.2°C) and an average low of 23.9°F (-4.5°C). In December, the average high-temperature decreases from a chilly 45°F (7.2°C) in November to a wintry 34.2°F (1.2°C). Weather in December »
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FAQ

What is the coldest month in Grafton?

The coldest month in Grafton, New York, is January, with an average high-temperature of 28.6°F (-1.9°C) and an average low-temperature of 16.5°F (-8.6°C).

What is the driest month in Grafton?

January is the month with the least rainfall. Rain falls for 6.3 days and accumulates 1.5" (38mm) of precipitation.

How much does it rain in Grafton?

In Grafton, New York, during the entire year, the rain falls for 140.6 days and collects up to 24.17" (614mm) of precipitation.

When does it snow in Grafton?

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

How many days does it snow in Grafton?

Throughout the year, there are 44.8 snowfall days, and 23.27" (591mm) of snow is accumulated.

When is the lowest UV index in Grafton?

The months with the lowest UV index in Grafton, New York, are January through March, October through December, with an average maximum UV index of 2.

What is the most humid month in Grafton?

The most humid month is February, with an average relative humidity of 83%.

What is the snowiest month in Grafton?

February is the month with the most snowfall. Snow falls for 11.2 days and accumulates 5.83" (148mm) of snow.

What is the month with the least sunshine in Grafton?

The month with the least sunshine in Grafton is February, with an average of 3.8h of sunshine.

When is Daylight Saving Time (DST) in Grafton?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Grafton, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Grafton?

With an average relative humidity of 74%, April is the least humid month in Grafton, New York.

What is the rainiest month in Grafton?

The wettest months are May and October, with an average 2.52" (64mm) of rainfall.

What is the month with the highest UV index in Grafton?

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

When it does not snow in Grafton?

In Grafton, snow does not fall in June through September.

When are the longest days in Grafton?

The month with the longest days in Grafton is June, with an average of 15h and 17min of daylight.

What is the warmest month in Grafton?

With an average high-temperature of 81°F (27.2°C) and an average low-temperature of 59°F (15°C), July is the warmest month.

What month has the most sunshine in Grafton?

With an average of 10.5h of sunshine, July has the most sunshine of the year in Grafton.

What is the month with the shortest days in Grafton?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Grafton, New York.

Average pressure
Grafton, NY

Average pressure - Grafton, NY

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Grafton, NY

Average wind speed - Grafton, NY

The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average rainfall
Grafton, NY

Average rainfall - Grafton, NY

The wettest months (with the highest rainfall) are May and October (2.52").
The driest month (with the least rainfall) is January (1.5").

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Average rainfall days
Grafton, NY

Average rainfall days - Grafton, NY

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall
Grafton, NY

Average snowfall - Grafton, NY

The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Grafton, NY

Average snowfall days - Grafton, NY

The month with the highest number of snowfall days is February (11.2 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, NY

Average daylight / Average sunshine - Grafton, NY

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days
Grafton, NY

Average sunshine days - Grafton, NY

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (12.9 days).

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Average UV index
Grafton, NY

Average UV index - Grafton, NY

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average visibility
Grafton, NY

Average visibility - Grafton, NY

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

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