Climate and monthly weather forecast
Japan, PA

Weather in January

January, like December, is another subzero cold winter month in Japan, Pennsylvania, with an average temperature fluctuating between 30.6°F (-0.8°C) and 18.5°F (-7.5°C). January is the coldest month, with an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18.5°F (-7.5°C). Weather in January »

Weather in February

The last month of the winter, February, is a cold month in Japan, Pennsylvania, with an average temperature varying between 34.3°F (1.3°C) and 20.3°F (-6.5°C). In Japan, the average high-temperature in February is almost the same as in January - a cold 34.3°F (1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Japan, Pennsylvania, with an average temperature fluctuating between 43°F (6.1°C) and 27.3°F (-2.6°C). In March, the average high-temperature marginally rises from a cold 34.3°F (1.3°C) in February to a chilly 43°F (6.1°C). Weather in March »

Weather in April

April is a fresh spring month in Japan, Pennsylvania, with an average temperature fluctuating between 37.9°F (3.3°C) and 55°F (12.8°C). In Japan, the average high-temperature in April increases from a chilly 43°F (6.1°C) in March to a fresh 55°F (12.8°C). Weather in April »

Weather in May

May, the last month of the spring in Japan, is an enjoyable month, with an average temperature ranging between min 48.4°F (9.1°C) and max 66.7°F (19.3°C). In May, the average high-temperature increases from a cool 55°F (12.8°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »

Weather in June

June, the first month of the summer in Japan, is a moderately hot month, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 55.2°F (12.9°C). In June, the average high-temperature slightly increases from a comfortable 66.7°F (19.3°C) in May to a warm 74.7°F (23.7°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Japan, Pennsylvania, with an average temperature fluctuating between 80.2°F (26.8°C) and 60.3°F (15.7°C). With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 60.3°F (15.7°C), July is the warmest month. Weather in July »

Weather in August

August, the last month of the summer in Japan, is also a moderately hot month, with an average temperature varying between 58.5°F (14.7°C) and 77.9°F (25.5°C). In Japan, the average high-temperature in August is almost the same as in July - a still moderately hot 77.9°F (25.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Japan, is still a pleasant month, with an average temperature fluctuating between 71.4°F (21.9°C) and 52°F (11.1°C). In September, the average high-temperature slightly decreases from a warm 77.9°F (25.5°C) in August to an agreeable 71.4°F (21.9°C). Weather in September »

Weather in October

October, the same as September, in Japan, Pennsylvania, is another mild autumn month, with an average temperature fluctuating between 58.3°F (14.6°C) and 43.5°F (6.4°C). In Japan, the average high-temperature in October drops from an agreeable 71.4°F (21.9°C) in September to a mild 58.3°F (14.6°C). Weather in October »

Weather in November

November, the last month of the autumn in Japan, is also a frosty month, with an average temperature varying between 32.5°F (0.3°C) and 45.9°F (7.7°C). In Japan, the average high-temperature in November drops from a moderate 58.3°F (14.6°C) in October to a chilly 45.9°F (7.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Japan, Pennsylvania, with an average temperature fluctuating between 25.5°F (-3.6°C) and 36.5°F (2.5°C). In Japan, the average high-temperature in December drops from a chilly 45.9°F (7.7°C) in November to a cold 36.5°F (2.5°C). Weather in December »
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FAQ

What is the coldest month in Japan?

The coldest month in Japan, Pennsylvania, is January, with an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 18.5°F (-7.5°C).

How many days does it rain in Japan?

Throughout the year, in Japan, there are 163.6 rainfall days, and 35" (889mm) of precipitation is accumulated.

When does it snow in Japan?

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

How much does it snow in Japan?

In Japan, Pennsylvania, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.

What are the most humid months in Japan?

The months with the highest humidity are February and December, with an average relative humidity of 84%.

What is the snowiest month in Japan?

February is the month with the most snowfall. Snow falls for 14.1 days and accumulates 8.62" (219mm) of snow.

What is the month with the least sunshine in Japan?

The month with the least sunshine is February, with an average of 3.6h of sunshine.

When is Daylight Saving Time (DST) in Japan?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Japan, Pennsylvania, 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 Japan?

April is the least humid month, with an average relative humidity of 78%.

What is the wettest month in Japan?

May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 3.5" (89mm) of precipitation.

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

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

When it does not snow in Japan?

June through September are months without snowfall in Japan, Pennsylvania.

When are the longest days in Japan?

June has the longest days of the year in Japan, with an average of 15h and 5min of daylight.

What is the warmest month in Japan?

The warmest month in Japan is July, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 60.3°F (15.7°C).

What month has the most sunshine in Japan?

With an average of 9.8h of sunshine, July has the most sunshine of the year.

What is the driest month in Japan?

The month with the least rainfall is September, when the rain falls for 13.8 days and typically collects 2.13" (54mm) of precipitation.

What is the month with the shortest days in Japan?

December has the shortest days of the year in Japan, with an average of 9h and 17min of daylight.

What is the month with the lowest UV index in Japan?

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

Average pressure
Japan, PA

Average pressure - Japan, PA

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
Japan, PA

Average wind speed - Japan, PA

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity
Japan, PA

Average humidity - Japan, PA

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (78%).

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Average rainfall
Japan, PA

Average rainfall - Japan, PA

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.13").

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Average rainfall days
Japan, PA

Average rainfall days - Japan, PA

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (7 days).

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Average snowfall
Japan, PA

Average snowfall - Japan, PA

The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Japan, PA

Average snowfall days - Japan, PA

The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Japan, PA

Average daylight / Average sunshine - Japan, PA

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 17min).

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

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Average sunshine days
Japan, PA

Average sunshine days - Japan, PA

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (9.2 days).

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Average visibility
Japan, PA

Average visibility - Japan, PA

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

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