January weather forecastJohnstown, PA
January
Weather in January
The chilly weather of Johnstown, Pennsylvania makes a strong appearance in January, with frequent snowfall making the landscape a winter wonderland. These conditions lead to lower visibility, demanding caution while driving. The relative humidity increases, paving the way for a typical wintry ambience alongside shorter daylight hours. Noteworthy in this season is the lower limit of the temperature which drops to 18.9°F (-7.3°C). As these conditions persist, the possibility of outdoor activities might be restricted.Temperature
January is the coldest month, with the temperature often reaching an average high of 30.7°F (-0.7°C) and an average low of 18.9°F (-7.3°C).Humidity
In Johnstown, the average relative humidity in January is 86%.Rainfall
In Johnstown, in January, during 6.8 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 152.7 rainfall days, and 21.1" (536mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Johnstown, in January, during 12 snowfall days, 3.98" (101mm) of snow is typically accumulated. Throughout the year, there are 47.7 snowfall days, and 18.23" (463mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:38 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:32 pm EST.
Sunshine
With an average of 3h of sunshine, January has the least sunshine of the year.UV index
In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 2 in January suggests the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Johnstown, PA
- Average high temperature in January: 30.7°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 (30.7°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
Johnstown, PA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Johnstown, PA
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Johnstown, PA
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (78%).
Average rainfall in January
Johnstown, PA
- Average rainfall in January: 1.38"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in January
Johnstown, PA
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in January
Johnstown, PA
- Average snowfall in January: 3.98"
The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Johnstown, PA
- Average snowfall days in January: 12 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Johnstown, PA
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in January
Johnstown, PA
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9 days).
Average UV index in January
Johnstown, 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
Johnstown, PA
- Average cloud cover in January: 72
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in January
Johnstown, PA
- Average visibility in January: 5mi
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).
