Climate and monthly weather forecast
Belfast, NY

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Weather in January

January, like December, is another subzero cold winter month in Belfast, New York, with an average temperature fluctuating between 15.8°F (-9°C) and 27.5°F (-2.5°C). Belfast's coldest month, January, generally records average temperatures ranging from a high of 27.5°F (-2.5°C) to a low of 15.8°F (-9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Belfast, New York, with an average temperature fluctuating between 30.4°F (-0.9°C) and 17.4°F (-8.1°C). With the onset of February, the average high-temperature stands at a still freezing cold 30.4°F (-0.9°C), closely aligned with January's 27.5°F (-2.5°C). Weather in February »

Weather in March

March, the first month of the spring in Belfast, is a wintry month, with an average temperature varying between 39.7°F (4.3°C) and 24.4°F (-4.2°C). The shift from February to March brings an increase in the average high-temperature, moving from a freezing cold 30.4°F (-0.9°C) to a wintry 39.7°F (4.3°C). Weather in March »

Weather in April

April in Belfast, New York, is a fresh spring month, with an average temperature ranging between min 34°F (1.1°C) and max 52.3°F (11.3°C). April marks a rise in the average high-temperature, moving from March's icy 39.7°F (4.3°C) to a fresh 52.3°F (11.3°C). Weather in April »

Weather in May

May, the last month of the spring in Belfast, is a refreshing month, with temperature in the range of an average high of 65.7°F (18.7°C) and an average low of 45.1°F (7.3°C). The rise of average high-temperatures is seen in May, with an increase from a fresh 52.3°F (11.3°C) in April to an enjoyable 65.7°F (18.7°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Belfast, New York, with an average temperature varying between 52.2°F (11.2°C) and 72.5°F (22.5°C). The shift from May to June sees a slight increase in the average high-temperature, transitioning from a comfortable 65.7°F (18.7°C) to an agreeable 72.5°F (22.5°C). Weather in June »

Weather in July

July is a moderately hot summer month in Belfast, New York, with an average temperature ranging between min 56.8°F (13.8°C) and max 77.5°F (25.3°C). July, known for its average high temperature of 77.5°F (25.3°C) and an average low temperature of 56.8°F (13.8°C), is the warmest month. Weather in July »

Weather in August

August, the last month of the summer in Belfast, is another warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 55°F (12.8°C). August's onset sees an average high-temperature of a still warm 75.7°F (24.3°C), exhibiting a slight fluctuation from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Belfast, New York, with an average temperature fluctuating between 49.8°F (9.9°C) and 69.6°F (20.9°C). A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 75.7°F (24.3°C) in August to a pleasant 69.6°F (20.9°C). Weather in September »

Weather in October

October, the same as September, in Belfast, New York, is another refreshing autumn month, with an average temperature ranging between min 41.2°F (5.1°C) and max 56.1°F (13.4°C). Belfast's transition into October involves a shift in temperature, receding from an agreeable 69.6°F (20.9°C) in September to a refreshing 56.1°F (13.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Belfast, New York, with an average temperature fluctuating between 30°F (-1.1°C) and 43.2°F (6.2°C). Transition into November marks a drop in the average high-temperature, moving from a mild 56.1°F (13.4°C) in October to a frosty 43.2°F (6.2°C). Weather in November »

Weather in December

December, the first month of the winter in Belfast, is also a wintry month, with an average temperature ranging between min 23.7°F (-4.6°C) and max 33.3°F (0.7°C). December is characterized by a reduction in the average high-temperature, from a chilly 43.2°F (6.2°C) in November to a cold 33.3°F (0.7°C). Weather in December »
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

January, with its high-temperature average of 27.5°F (-2.5°C) and a low-temperature average of 15.8°F (-9°C), is the coldest month.

What are the most humid months?

The months with the highest humidity in Belfast are January and February, with an average relative humidity of 89%.

How much does it rain?

In Belfast, during the entire year, the rain falls for 170.2 days and collects up to 29.29" (744mm) of precipitation.

When does it snow?

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

How much does it snow in Belfast?

Throughout the year, there are 95.9 snowfall days, and 45.12" (1146mm) of snow is accumulated.

What is the month with the least sunshine?

January has the least sunshine of the year in Belfast, New York, with an average of 2.5h of sunshine.

What is the month with the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 19.8 days and accumulates 11.1" (282mm) of snow.

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.

What is the rainiest month?

The month with the most rainfall is April, when the rain falls for 16.3 days and typically aggregates up to 3.07" (78mm) of precipitation.

What is the least humid month?

The months with the lowest humidity are May through July, with an average relative humidity of 79%.

When is the highest UV index?

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

When it does not snow?

June through September are months without snowfall.

When are the longest days?

The month with the longest days in Belfast, New York, is June, with an average of 15h and 12min of daylight.

What part of the year is the hottest?

Belfast witnesses the warmest weather in July, with temperatures averaging a high of 77.5°F (25.3°C) and a low of 56.8°F (13.8°C).

What month has the most sunshine?

With an average of 9.7h of sunshine, July has the most sunshine of the year.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 15.5 days and typically collects 1.85" (47mm) of precipitation.

What is the month with the shortest days?

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

Average temperature
Belfast, NY

Average temperature - Belfast, NY

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.5°F).

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure
Belfast, NY

Average pressure - Belfast, NY

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Belfast, NY

Average wind speed - Belfast, NY

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity
Belfast, NY

Average humidity - Belfast, NY

The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).

Average rainfall
Belfast, NY

Average rainfall - Belfast, NY

The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days
Belfast, NY

Average rainfall days - Belfast, NY

The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is January (6.8 days).

Average snowfall
Belfast, NY

Average snowfall - Belfast, NY

The month with the highest snowfall is February (11.1").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Belfast, NY

Average snowfall days - Belfast, NY

The month with the highest number of snowfall days is January (20.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Belfast, NY

Average daylight / Average sunshine - Belfast, NY

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days
Belfast, NY

Average sunshine days - Belfast, NY

The month with the most sunshine days is September (12 days).
The month with the least sunshine days is February (5.2 days).

Average UV index
Belfast, NY

Average UV index - Belfast, 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 and December (UV index 1).

Average visibility
Belfast, NY

Average visibility - Belfast, NY

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

Belfast, New York, USA

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