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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Japan, Pennsylvania, is a freezing cold winter month, with an average temperature ranging between max 30.6°F (-0.8°C) and min 18.5°F (-7.5°C). In Japan, the month of January registers the lowest temperatures, averaging 30.6°F (-0.8°C) at the peak and 18.5°F (-7.5°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Japan, is a cold month, with an average temperature ranging between min 20.3°F (-6.5°C) and max 34.3°F (1.3°C). The transition from January to February sees an average high-temperature of a wintry 34.3°F (1.3°C), indicating a minor variance from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Japan, is a chilly month, with an average temperature varying between 27.3°F (-2.6°C) and 43°F (6.1°C). In Japan, stepping into March brings a gentle temperature nudge, moving slightly up from February's icy 34.3°F (1.3°C) to a frosty 43°F (6.1°C). Weather in March »
Weather in April
April is a fresh spring month in Japan, Pennsylvania, with an average temperature varying between 55°F (12.8°C) and 37.9°F (3.3°C). With the onset of April, Japan experiences a temperature shift, with the average high-temperature moving from a frosty 43°F (6.1°C) in March to a cool 55°F (12.8°C). Weather in April »
Weather in May
May, the last month of the spring in Japan, is a refreshing month, with an average temperature ranging between max 66.7°F (19.3°C) and min 48.4°F (9.1°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a cool 55°F (12.8°C) to a comfortable 66.7°F (19.3°C). Weather in May »
Weather in June
June, the first month of the summer in Japan, is a warm month, with an average temperature fluctuating between 74.7°F (23.7°C) and 55.2°F (12.9°C). June's arrival brings a slight change in high-temperatures, adjusting 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, like June, in Japan, Pennsylvania, is a moderately hot summer month, with an average temperature ranging between max 80.2°F (26.8°C) and min 60.3°F (15.7°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 80.2°F (26.8°C) and a low of 60.3°F (15.7°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Japan, Pennsylvania, with an average temperature fluctuating between 77.9°F (25.5°C) and 58.5°F (14.7°C). Shifting into August, Japan records an average high-temperature of a still warm 77.9°F (25.5°C), presenting minor fluctuations compared to the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Japan, Pennsylvania, with an average temperature ranging between min 52°F (11.1°C) and max 71.4°F (21.9°C). September's arrival comes with a mild decrease in the average high-temperature, moving subtly 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, like September, is a moderate autumn month in Japan, Pennsylvania, with an average temperature varying between 43.5°F (6.4°C) and 58.3°F (14.6°C). Japan's October weather features a mild decline in high-temperatures, reducing from a pleasant 71.4°F (21.9°C) in September to a moderate 58.3°F (14.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Japan, Pennsylvania, with an average temperature fluctuating between 32.5°F (0.3°C) and 45.9°F (7.7°C). During Japan's transition into November, the average high-temperature lessens, moving from a refreshing 58.3°F (14.6°C) in October to a frosty 45.9°F (7.7°C). Weather in November »
Weather in December
December, the first month of the winter in Japan, is also a wintry month, with an average temperature fluctuating between 36.5°F (2.5°C) and 25.5°F (-3.6°C). As Japan, Pennsylvania, enters December, the average high-temperature decreases from the a chilly 45.9°F (7.7°C) of November to an icy 36.5°F (2.5°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Japan?
Japan's coldest weather arrives in January, when temperatures average a high of 30.6°F (-0.8°C) and a low of 18.5°F (-7.5°C).
How much does it rain in Japan?
Throughout the year, there are 163.6 rainfall days, and 35" (889mm) of precipitation is accumulated.
When does it snow in Japan?
January through May, October through December are months with snowfall.
How many days does it snow in Japan?
In Japan, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.
What is the most humid month in Japan?
The months with the highest humidity in Japan, Pennsylvania, are February and December, with an average relative humidity of 84%.
When does it snow the most in Japan?
The month with the most snowfall in Japan, Pennsylvania, is February, when snow falls for 14.1 days and typically aggregates up to 8.62" (219mm) of snow.
What is the month with the least sunshine in Japan?
February has the least sunshine of the year in Japan, with an average of 3.6h of sunshine.
When is Daylight Saving Time (DST) in Japan?
On Sunday, March 10. 2024, 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 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month in Japan?
With an average relative humidity of 78%, April is the least humid month in Japan, Pennsylvania.
What is the rainiest month in Japan?
The month with the most rainfall in Japan, Pennsylvania, is May, when the rain falls for 19.4 days and typically aggregates up to 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 in Japan, Pennsylvania.
When it does not snow in Japan?
June through September are months without snowfall in Japan, Pennsylvania.
When are the longest days in Japan?
With an average of 15h and 6min of daylight, June has the longest days of the year in Japan.
What month is the hottest in Japan?
July stands out as Japan's warmest month, with an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 60.3°F (15.7°C).
What month has the most sunshine in Japan?
July has the most sunshine of the year in Japan, Pennsylvania, with an average of 9.8h of sunshine.
What is the driest month in Japan?
September is the month with the least rainfall in Japan, Pennsylvania. Rain falls for 13.8 days and accumulates 2.13" (54mm) of precipitation.
What is the month with the shortest days in Japan?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
When is the lowest UV index in Japan?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Japan, PA
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Japan, PA
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.07"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Japan, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.2mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.6mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.8mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.9mph
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).
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%).
Average rainfall
Japan, PA
- Average rainfall in January:
2.72" - Average rainfall in February:
2.72" - Average rainfall in March:
2.8" - Average rainfall in April:
3.23" - Average rainfall in May:
3.5" - Average rainfall in June:
2.83"
- Average rainfall in July:
3.27" - Average rainfall in August:
3.23" - Average rainfall in September:
2.13" - Average rainfall in October:
2.91" - Average rainfall in November:
2.72" - Average rainfall in December:
2.95"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days
Japan, PA
- Average rainfall days in January:
7 days - Average rainfall days in February:
8 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
19.4 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
14.9 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
11 days
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).
Average snowfall
Japan, PA
- Average snowfall in January:
8.46" - Average snowfall in February:
8.62" - Average snowfall in March:
7.56" - Average snowfall in April:
1.34" - Average snowfall in May:
0.87" - Average snowfall in June:
0"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Japan, PA
- Average snowfall days in January:
14.8 days - Average snowfall days in February:
14.1 days - Average snowfall days in March:
10.4 days - Average snowfall days in April:
3.6 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1 days - Average snowfall days in November:
6 days - Average snowfall days in December:
10.7 days
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).
Average daylight / Average sunshine
Japan, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 1min - Average sunshine in May:
7h and 4min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
4h and 5min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
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).
Average sunshine days
Japan, PA
- Average sunshine days in January:
12.7 days - Average sunshine days in February:
9.7 days - Average sunshine days in March:
10.9 days - Average sunshine days in April:
10.4 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
9.9 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
15.6 days - Average sunshine days in December:
13.2 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (9.2 days).
Average UV index
Japan, PA
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Japan, PA
The months with the most cloud cover are February and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 38).
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).