Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
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.Humidity
In January, the average relative humidity in Japan is 82%.Rainfall
In Japan, in January, during 7 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in Japan, Pennsylvania, there are 163.6 rainfall days, and 35" (889mm) of precipitation is accumulated.Snowfall
Months with snowfall in Japan are January through May, October through December. In Japan, Pennsylvania, in January, during 14.8 snowfall days, 8.46" (215mm) of snow is typically accumulated. In Japan, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.Daylight
The average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:28 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in January in Japan, Pennsylvania, is 3.7h.UV index
The average daily maximum UV index in January in Japan is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Japan?
How cold is January in Japan?
What is the average humidity in January in Japan?
How many days does it rain in January in Japan?
How much does it snow in Japan in January?
What is the average length of the day in January in Japan?
What time are sunrise and sunset in January in Japan?
How long on average sun shines in January in Japan?
What is the UV index intensity in January in Japan?
Average temperature in January
Japan, PA
- Average high temperature in January: 30.6°F
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).
- Average low temperature in January: 18.5°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 in January
Japan, PA
- Average pressure in January: 30.08"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 in January
Japan, PA
- Average wind speed in January: 8.3mph
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 in January
Japan, PA
- Average humidity in January: 82%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (78%).
Average rainfall in January
Japan, PA
- Average rainfall in January: 2.72"
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 in January
Japan, PA
- Average rainfall days in January: 7 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 in January
Japan, PA
- Average snowfall in January: 8.46"
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 in January
Japan, PA
- Average snowfall days in January: 14.8 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 in January /
Average sunshine in January
Japan, PA
- Average daylight in January: 9h and 4min
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
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 in January
Japan, PA
- Average sunshine days in January: 12.7 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 in January
Japan, PA
- Average UV index in January: 2
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 in January
Japan, PA
- Average cloud cover in January: 60
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 in January
Japan, PA
- Average visibility in January: 5mi
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).
Japan, Pennsylvania, USA
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