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 sea temperature 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 proves to be the coldest month, recording an average maximum temperature of 37.4°F (3°C) and a minimum temperature of 25.7°F (-3.5°C).Humidity
In January, the average relative humidity is 74%.Rainfall
January is the month with the least rainfall. Rain falls for 7.1 days and accumulates 1.61" (41mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Marcus Hook, in January, during 3.5 snowfall days, 1.73" (44mm) of snow is typically accumulated. In Marcus Hook, Pennsylvania, during the entire year, snow falls for 12.6 days and aggregates up to 7.28" (185mm) of snow.Ocean temperature
In Marcus Hook, in January, the average water temperature is 41.9°F (5.5°C).Note: It is risky to swim in 41.9°F (5.5°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
In January, the average length of the day in Marcus Hook is 9h and 44min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:19 pm EST.
Sunshine
In January, the average sunshine in Marcus Hook is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Marcus Hook. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 2 during January translates into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the coldest time of year in Marcus Hook?
How cold is January in Marcus Hook?
What is the average humidity in January in Marcus Hook?
What is the driest month in Marcus Hook?
How much does it rain in Marcus Hook in January?
How much does it snow in Marcus Hook in January?
What is the ocean temperature in January in Marcus Hook?
What is the average length of the day in January in Marcus Hook?
When are sunrise and sunset in January in Marcus Hook?
How long on average sun shines in January in Marcus Hook?
What is the month with the lowest UV index in Marcus Hook?
How high is the UV index in January in Marcus Hook?
Average temperature in January
Marcus Hook, PA
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
Marcus Hook, 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
Marcus Hook, PA
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in January
Marcus Hook, PA
- Average humidity in January: 74%
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in January
Marcus Hook, PA
- Average rainfall in January: 1.61"
The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in January
Marcus Hook, PA
- Average rainfall days in January: 7.1 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in January
Marcus Hook, PA
- Average snowfall in January: 1.73"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Marcus Hook, PA
- Average snowfall days in January: 3.5 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in January
Marcus Hook, PA
- Average sea temperature in January: 41.8°F
The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in January /
Average sunshine in January
Marcus Hook, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in January
Marcus Hook, PA
- Average sunshine days in January: 20.8 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in January
Marcus Hook, 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, November and December (UV index 2).
Average cloud cover in January
Marcus Hook, PA
- Average cloud cover in January: 44
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Marcus Hook, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Marcus Hook, Pennsylvania, USA
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