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
January, known for its average high temperature of 37.4°F (3°C) and an average low temperature of 25.2°F (-3.8°C), is the coldest month.Humidity
In January, the average relative humidity in Cornwell, Pennsylvania, is 74%.Rainfall
January is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.89" (48mm) of precipitation.Snowfall
Months with snowfall in Cornwell are January through May, November and December. In Cornwell, in January, snow falls for 5.2 days, with typically accumulated 1.61" (41mm) of snow. Throughout the year, there are 16.8 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
In January, the average length of the day in Cornwell is 9h and 43min.On the first day of January in Cornwell, sunrise is at 7:21 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:17 pm EST.
Sunshine
In January, the average sunshine in Cornwell, Pennsylvania, is 5h.UV index
The months with the lowest UV index in Cornwell are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 2 in January leads to these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Cornwell?
How cold is January in Cornwell?
What is the average humidity in January in Cornwell?
What is the driest month in Cornwell?
How much does it rain in Cornwell in January?
How many days does it snow in January in Cornwell?
How many hours of daylight does Cornwell have in January?
When are sunrise and sunset in January in Cornwell?
How many hours of sunshine does Cornwell have in January?
What are the months with the lowest UV index in Cornwell?
What is the UV index reading in January in Cornwell?
Average temperature in January
Cornwell, PA
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 25.2°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in January
Cornwell, 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 (29.93"Hg).
Average wind speed in January
Cornwell, PA
- Average wind speed in January: 8.2mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in January
Cornwell, PA
- Average humidity in January: 74%
The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).
Average rainfall in January
Cornwell, PA
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in January
Cornwell, PA
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in January
Cornwell, PA
- Average snowfall in January: 1.61"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Cornwell, PA
- Average snowfall days in January: 5.2 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Cornwell, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Cornwell, PA
- Average sunshine days in January: 19.5 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in January
Cornwell, 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
Cornwell, PA
- Average cloud cover in January: 45
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in January
Cornwell, 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).
Cornwell, Pennsylvania, USA
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