Climate and monthly weather forecast
Belfast, PA

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Weather in January

January, like December, in Belfast, Pennsylvania, is a wintry winter month, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 33.4°F (0.8°C). With average high temperatures of 33.4°F (0.8°C) and lows of 20.7°F (-6.3°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Belfast, Pennsylvania, with temperature in the range of an average high of 36.5°F (2.5°C) and an average low of 22.5°F (-5.3°C). As Belfast, Pennsylvania, welcomes February, the average high-temperature is noted at a still cold 36.5°F (2.5°C), closely aligning with the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Belfast, Pennsylvania, with an average temperature ranging between max 45.1°F (7.3°C) and min 29.7°F (-1.3°C). Belfast's weather shows a minor temperature rise with the arrival of March, moving from an icy 36.5°F (2.5°C) in February to a frosty 45.1°F (7.3°C). Weather in March »

Weather in April

April in Belfast, Pennsylvania, is a moderate spring month, with an average temperature varying between 57.6°F (14.2°C) and 39.7°F (4.3°C). Belfast's transition into April sees a rise in the average high-temperature, advancing from a frosty 45.1°F (7.3°C) in March to a mild 57.6°F (14.2°C). Weather in April »

Weather in May

May, the last month of the spring in Belfast, is a pleasant month, with an average temperature fluctuating between 68.5°F (20.3°C) and 49.8°F (9.9°C). In May, the average high-temperature increases from a refreshing 57.6°F (14.2°C) in April to an agreeable 68.5°F (20.3°C). Weather in May »

Weather in June

June, the first month of the summer in Belfast, is a warm month, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 56.8°F (13.8°C). June's arrival coincides with a marginal rise in the average high-temperature, moving from May's pleasant 68.5°F (20.3°C) to a warm 76.6°F (24.8°C). Weather in June »

Weather in July

July, like June, in Belfast, Pennsylvania, is another warm summer month, with an average temperature varying between 82.9°F (28.3°C) and 62.2°F (16.8°C). July, with its high-temperature average of 82.9°F (28.3°C) and a low-temperature average of 62.2°F (16.8°C), is the warmest month. The heat index value during July is estimated at a hot 89.6°F (32°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Belfast, Pennsylvania, with an average temperature ranging between min 60.4°F (15.8°C) and max 80.2°F (26.8°C). The transition from July to August sees an average high-temperature of a still moderately hot 80.2°F (26.8°C), indicating a minor variance from the prior month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Belfast, Pennsylvania, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 73.9°F (23.3°C). September's arrival aligns with a minor decrease in average high-temperatures, from August's 80.2°F (26.8°C) to a still warm 73.9°F (23.3°C). Weather in September »

Weather in October

October, like September, in Belfast, Pennsylvania, is another comfortable autumn month, with an average temperature varying between 45.1°F (7.3°C) and 61.2°F (16.2°C). The arrival of October indicates a decrease in the average high-temperature, moving from a warm 73.9°F (23.3°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Belfast, is also a frosty month, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 48.4°F (9.1°C). In Belfast, the average high-temperature in November decreases from a comfortable 61.2°F (16.2°C) in October to a chilly 48.4°F (9.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Belfast, Pennsylvania, with an average temperature varying between 39°F (3.9°C) and 27.5°F (-2.5°C). The start of December involves a temperature drop, moving from a chilly 48.4°F (9.1°C) in November to a cold 39°F (3.9°C). Weather in December »
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Frequently asked questions

What month is the coldest in Belfast?

Temperature readings in Belfast, Pennsylvania, reach their annual highs in January, averaging 33.4°F (0.8°C) and a minimum average of 20.7°F (-6.3°C).

How many days does it rain in Belfast?

In Belfast, Pennsylvania, during the entire year, the rain falls for 139.9 days and collects up to 19.88" (505mm) of precipitation.

When does it snow in Belfast?

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

How much does it snow in Belfast?

Throughout the year, in Belfast, there are 24.7 snowfall days, and 10.94" (278mm) of snow is accumulated.

What is the most humid month in Belfast?

February is the most humid month, with an average relative humidity of 82%.

When does it snow the most in Belfast?

February is the month with the most snowfall in Belfast, Pennsylvania. Snow falls for 6.8 days and accumulates 2.52" (64mm) of snow.

What is the month with the least sunshine in Belfast?

With an average of 4.5h of sunshine, February has the least sunshine of the year in Belfast, Pennsylvania.

When is Daylight Saving Time (DST) in Belfast?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Belfast, Pennsylvania, 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 Belfast?

April is the least humid month in Belfast, Pennsylvania, with an average relative humidity of 76%.

When it does not snow in Belfast?

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

When are the longest days in Belfast?

With an average of 15h and 6min of daylight, June has the longest days of the year in Belfast.

When is the highest UV index in Belfast?

With an average maximum UV index of 6, June is the month with the highest UV index.

What month is the hottest in Belfast?

July, with an average high of 82.9°F (28.3°C) and a low of 62.2°F (16.8°C), signifies the warmest month of the year.

What is the wettest month in Belfast?

July is the month with the most rainfall. Rain falls for 15.1 days and accumulates 2.32" (59mm) of precipitation.

What month has the most sunshine in Belfast?

The month with the most sunshine in Belfast is July, with an average of 10.4h of sunshine.

What is the driest month in Belfast?

September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 1.02" (26mm) of precipitation.

What is the month with the shortest days in Belfast?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

When is the lowest UV index in Belfast?

With an average maximum UV index of 1, December is the month with the lowest UV index in Belfast.

Average temperature
Belfast, PA

Average temperature - Belfast, PA

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure
Belfast, PA

Average pressure - Belfast, PA

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
Belfast, PA

Average wind speed - Belfast, PA

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average rainfall
Belfast, PA

Average rainfall - Belfast, PA

The wettest month (with the highest rainfall) is July (2.32").
The driest month (with the least rainfall) is September (1.02").

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Average rainfall days
Belfast, PA

Average rainfall days - Belfast, PA

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall
Belfast, PA

Average snowfall - Belfast, PA

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Belfast, PA

Average snowfall days - Belfast, PA

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Belfast, PA

Average daylight / Average sunshine - Belfast, PA

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

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days
Belfast, PA

Average sunshine days - Belfast, PA

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is July (13 days).

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Average visibility
Belfast, PA

Average visibility - Belfast, PA

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

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Belfast, Pennsylvania, USA

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