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
Graterford notes the coldest temperatures in January, with a high average of 35.4°F (1.9°C) and a low of 23.2°F (-4.9°C).Humidity
In January, the average relative humidity in Graterford is 77%.Rainfall
In Graterford, in January, during 7.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
Months with snowfall in Graterford are January through April, November and December. In Graterford, during January, snow falls for 5.8 days and regularly aggregates up to 2.64" (67mm) of snow. In Graterford, during the entire year, snow falls for 19.1 days and aggregates up to 11.54" (293mm) of snow.Daylight
The average length of the day in January is 9h and 42min.On the first day of the month, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in January in Graterford is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Graterford, Pennsylvania. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: In January, a regular UV index of 2 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What time of the year is the coldest in Graterford?
How cold is January in Graterford?
What is the average humidity in January in Graterford?
How many days does it rain in January in Graterford?
How much does it snow in Graterford in January?
How many hours of daylight does Graterford have in January?
When are sunrise and sunset in January in Graterford?
How long on average sun shines in January in Graterford?
When is the lowest UV index in Graterford?
What is the UV index intensity in January in Graterford?
Average temperature in January
Graterford, PA
- Average high temperature in January: 35.4°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in January
Graterford, PA
- Average pressure in January: 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 in January
Graterford, PA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Graterford, PA
- Average humidity in January: 77%
The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in January
Graterford, PA
- Average rainfall in January: 1.85"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Graterford, PA
- Average rainfall days in January: 7.3 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Graterford, PA
- Average snowfall in January: 2.64"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Graterford, PA
- Average snowfall days in January: 5.8 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Graterford, PA
- Average daylight in January: 9h and 4min
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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Graterford, PA
- Average sunshine days in January: 18.7 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in January
Graterford, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Graterford, PA
- Average cloud cover in January: 46
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Graterford, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Graterford, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
