Climate and monthly weather forecast
Byrnsville, PA

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Weather in January

January, like December, is another subzero cold winter month in Byrnsville, Pennsylvania, with an average temperature varying between 31.8°F (-0.1°C) and 19.8°F (-6.8°C). January is the coldest month, exhibiting average temperatures of 31.8°F (-0.1°C) at the peak and 19.8°F (-6.8°C) at the base. Weather in January »

Weather in February

February, the last month of the winter in Byrnsville, is a wintry month, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 21.9°F (-5.6°C). The transition into February reveals an average high-temperature of a wintry 35.6°F (2°C), mirroring a close resemblance to January. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Byrnsville, Pennsylvania, with an average temperature ranging between max 44.8°F (7.1°C) and min 28.9°F (-1.7°C). The arrival of March brings a change in Byrnsville's weather, with average high-temperatures moving from February's wintry 35.6°F (2°C) to a frosty 44.8°F (7.1°C). Weather in March »

Weather in April

April is a refreshing spring month in Byrnsville, Pennsylvania, with an average temperature varying between 39.6°F (4.2°C) and 57°F (13.9°C). April witnesses an increase in the average high-temperature, moving from a frosty 44.8°F (7.1°C) in March to a moderate 57°F (13.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Byrnsville, Pennsylvania, with an average temperature fluctuating between 68°F (20°C) and 49.5°F (9.7°C). The average high-temperature increases in May, moving from a refreshing 57°F (13.9°C) in April to an agreeable 68°F (20°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Byrnsville, Pennsylvania, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 56.8°F (13.8°C). June signals a minor shift in the average high-temperature, moving from May's agreeable 68°F (20°C) to a moderately hot 75.4°F (24.1°C). Weather in June »

Weather in July

July, like June, in Byrnsville, Pennsylvania, is another warm summer month, with an average temperature ranging between min 61.3°F (16.3°C) and max 81.1°F (27.3°C). July, recording an average high temperature of 81.1°F (27.3°C) and a low temperature of 61.3°F (16.3°C), is Byrnsville's warmest month. July's heat index is evaluated at a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Byrnsville, Pennsylvania, with an average temperature ranging between max 78.4°F (25.8°C) and min 59.5°F (15.3°C). The arrival of August sees an average high-temperature of a still warm 78.4°F (25.8°C), hardly diverging from July's 81.1°F (27.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Byrnsville, Pennsylvania, with an average temperature fluctuating between 53.8°F (12.1°C) and 72.7°F (22.6°C). With the beginning of September, the average high-temperature shows a small decrease, transitioning from a moderately hot 78.4°F (25.8°C) in August to a pleasant 72.7°F (22.6°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Byrnsville, Pennsylvania, with temperature in the range of an average high of 60.3°F (15.7°C) and an average low of 44.2°F (6.8°C). October shows a mild decline in the average high-temperature, falling from September's agreeable 72.7°F (22.6°C) to a refreshing 60.3°F (15.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Byrnsville, Pennsylvania, with an average temperature varying between 47.5°F (8.6°C) and 33.8°F (1°C). Setting in of November comes with a decrease in the average high-temperature, moving from a refreshing 60.3°F (15.7°C) in October to a chilly 47.5°F (8.6°C). Weather in November »

Weather in December

December, the first month of the winter in Byrnsville, is also an icy month, with an average temperature varying between 27.5°F (-2.5°C) and 38.1°F (3.4°C). The commencement of December indicates a shift in the average high-temperature, receding from November's frosty 47.5°F (8.6°C) to an icy 38.1°F (3.4°C). Weather in December »

Frequently asked questions

What part of the year is the coldest?

January, known for its average high temperature of 31.8°F (-0.1°C) and an average low temperature of 19.8°F (-6.8°C), is the coldest month.

How many days does it rain?

Throughout the year, there are 159.6 rainfall days, and 29.41" (747mm) of precipitation is accumulated.

When does it snow?

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

When does it snow the most?

The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 5.98" (152mm) of snow.

How many days does it snow?

Throughout the year, there are 48.2 snowfall days, and 24.84" (631mm) of snow is accumulated.

What are the months with the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the most humid month?

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

What is the month with the least sunshine?

With an average of 4.2h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST) in Byrnsville?

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 least humid month?

April is the least humid month, with an average relative humidity of 77%.

What is the rainiest month?

The month with the most rainfall in Byrnsville is May, when the rain falls for 18.2 days and typically aggregates up to 3.11" (79mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

The month with the longest days in Byrnsville is June, with an average of 15h and 6min of daylight.

What is the month with the highest UV index?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What are the warmest months?

With average temperatures fluctuating between a high of 81.1°F (27.3°C) and a low of 61.3°F (16.3°C), July stands out as the warmest month.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.4h of sunshine.

What is the driest month in Byrnsville?

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.77" (45mm) of precipitation.

What is the month with the shortest days?

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

Average temperature
Byrnsville, PA

Average temperature - Byrnsville, PA

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure
Byrnsville, PA

Average pressure - Byrnsville, PA

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Byrnsville, PA

Average wind speed - Byrnsville, PA

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity
Byrnsville, PA

Average humidity - Byrnsville, PA

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall
Byrnsville, PA

Average rainfall - Byrnsville, PA

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days
Byrnsville, PA

Average rainfall days - Byrnsville, PA

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (8.9 days).

Average snowfall
Byrnsville, PA

Average snowfall - Byrnsville, PA

The month with the highest snowfall is January (5.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Byrnsville, PA

Average snowfall days - Byrnsville, PA

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Byrnsville, PA

Average daylight / Average sunshine - Byrnsville, 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 12min).

Average sunshine days
Byrnsville, PA

Average sunshine days - Byrnsville, PA

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (10.3 days).

Average UV index
Byrnsville, PA

Average UV index - Byrnsville, PA

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average visibility
Byrnsville, PA

Average visibility - Byrnsville, 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).

Byrnsville, Pennsylvania, USA

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