Monthly weather forecast and climate
Alton, NY

January, like December, is another subzero cold winter month in Alton, New York, with average temperature fluctuating between 21°F (-6.1°C) and 29.7°F (-1.3°C). The coldest month is January, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 21°F (-6.1°C). Weather in January »

The last month of the winter, February, is another freezing cold month in Alton, New York, with average temperature ranging between min 22.3°F (-5.4°C) and max 31.6°F (-0.2°C). In February, the average high-temperature is almost the same as in January - a still subzero cold 31.6°F (-0.2°C). Weather in February »

The first month of the spring, March, is a wintry month in Alton, New York, with average temperature varying between 38.8°F (3.8°C) and 29.1°F (-1.6°C). In March, the average high-temperature marginally rises, from a freezing cold 31.6°F (-0.2°C) in February, to a cold 38.8°F (3.8°C). Weather in March »

April in Alton, New York, is a frosty spring month, with average temperature fluctuating between 49.6°F (9.8°C) and 38.1°F (3.4°C). In Alton, New York, the average high-temperature rises, from a cold 38.8°F (3.8°C) in March, to a frosty 49.6°F (9.8°C). Weather in April »

May, the last month of the spring, in Alton, is a moderate month, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 48.7°F (9.3°C). In Alton, New York, the average high-temperature in May increases, from a chilly 49.6°F (9.8°C) in April, to a moderate 60.6°F (15.9°C). Weather in May »

The first month of the summer, June, is a pleasant month in Alton, New York, with average temperature fluctuating between 57°F (13.9°C) and 69.1°F (20.6°C). In June, the average high-temperature marginally rises, from a moderate 60.6°F (15.9°C) in May, to a pleasant 69.1°F (20.6°C). Weather in June »

July is a moderately hot summer month in Alton, New York, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 64.2°F (17.9°C). With an average high-temperature of 76.5°F (24.7°C) and an average low-temperature of 64.2°F (17.9°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Alton, is also a moderately hot month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 64°F (17.8°C). In Alton, the average high-temperature in August is essentially the same as in July - a still moderately hot 75.9°F (24.4°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Alton, New York, with average temperature fluctuating between 57.9°F (14.4°C) and 70.2°F (21.2°C). In September, the average high-temperature marginally drops, from a moderately hot 75.9°F (24.4°C) in August, to a pleasant 70.2°F (21.2°C). Weather in September »

October, like September, is a moderate autumn month in Alton, New York, with average temperature varying between 48°F (8.9°C) and 58.1°F (14.5°C). In Alton, New York, the average high-temperature in October decreases, from an agreeable 70.2°F (21.2°C) in September, to a mild 58.1°F (14.5°C). Weather in October »

November, the last month of the autumn, in Alton, is also a frosty month, with temperature in the range of an average low of 36.5°F (2.5°C) and an average high of 45.9°F (7.7°C). In Alton, New York, the average high-temperature in November decreases, from a moderate 58.1°F (14.5°C) in October, to a frosty 45.9°F (7.7°C). Weather in November »

The first month of the winter, December, is also a wintry month in Alton, New York, with temperature in the range of an average high of 36.1°F (2.3°C) and an average low of 28.8°F (-1.8°C). In Alton, New York, the average high-temperature in December drops, from a frosty 45.9°F (7.7°C) in November, to a cold 36.1°F (2.3°C). Weather in December »

What is the coldest month in Alton?

The coldest month in Alton, New York, is January, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 21°F (-6.1°C).

What are the most humid months in Alton?

Months with the highest humidity in Alton, New York, are January and February, with an average relative humidity of 83%.

How many days does it rain in Alton?

Throughout the year, in Alton, there are 171.8 rainfall days, and 32.76" (832mm) of precipitation is accumulated.

What is the driest month in Alton?

The month with the least rainfall is January when the rain falls for 8.3 days and typically collects 2.05" (52mm) of precipitation.

When does it snow in Alton?

January through May, October through December are months with snowfall in Alton.

How many days does it snow in Alton?

Throughout the year, there are 67.1 snowfall days, and 22.99" (584mm) of snow is accumulated.

What is the month with the least sunshine in Alton?

The month with the least sunshine is January, with an average of 2.6h of sunshine.

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

Months with the lowest UV index in Alton, New York, are January and December, with an average maximum UV index of 1.

When does it snow the most in Alton?

The month with the most snowfall is February when snow falls for 15.1 days and typically aggregates up to 6.26" (159mm) of snow.

When it does not snow in Alton?

June through September are months without snowfall in Alton, New York.

When are the longest days in Alton?

With an average of 15.3h of daylight, June has the longest days of the year.

What is the warmest month in Alton?

With an average high-temperature of 76.5°F (24.7°C) and an average low-temperature of 64.2°F (17.9°C), July is the warmest month in Alton, New York.

What month has the most sunshine in Alton?

The month with the most sunshine in Alton is July, with an average of 10.8h of sunshine.

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

With an average maximum UV index of 6, July is the month with the highest UV index in Alton.

What is the least humid month in Alton?

September is the least humid month in Alton, New York, with an average relative humidity of 76%.

What is the wettest month in Alton?

The month with the most rainfall is October when the rain falls for 17.8 days and typically aggregates up to 3.62" (92mm) of precipitation.

What is the month with the shortest days in Alton?

The month with the shortest days in Alton is December, with an average of 9h of daylight.
Average pressure - Alton, NY

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

Average wind speed - Alton, NY

The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity - Alton, NY
Average rainfall - Alton, NY

The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days - Alton, NY

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (7.9 days).

Average snowfall - Alton, NY
Average snowfall days - Alton, NY

The month with the highest number of snowfall days is January (16.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Alton, NY
Average sunshine days - Alton, NY
Average visibility - Alton, NY

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