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
Rock Hall witnesses the coldest weather in January, with temperatures averaging a high of 39.2°F (4°C) and a low of 28.4°F (-2°C).Humidity
In Rock Hall, Maryland, the average relative humidity in January is 74%.Rainfall
The month with the least rainfall is January, when the rain falls for 6.8 days and typically collects 0.55" (14mm) of precipitation.Snowfall
January through April and December are months with snowfall. January is the month with the most snowfall. Snow falls for 3 days and accumulates 0.83" (21mm) of snow.Ocean temperature
In Rock Hall, in January, the average water temperature is 45.1°F (7.3°C).Note: Swimming in 45.1°F (7.3°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In January, the average length of the day is 9h and 47min.On the first day of the month, sunrise is at 7:24 am and sunset at 4:52 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:24 pm EST.
Sunshine
In January, the average sunshine is 5.3h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. 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
What is the coldest time of year?
How cold does it get in January?
What is the average humidity in January in Rock Hall?
What is the driest month?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
What is the ocean temperature in January?
How many hours of daylight does Rock Hall have in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Rock Hall, MD
- Average high temperature in January: 39.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in January: 28.4°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in January
Rock Hall, MD
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Rock Hall, MD
- Average wind speed in January: 9.8mph
The windiest months (with the highest average wind speed) are January, February and March (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in January
Rock Hall, MD
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is November (73%).
Average rainfall in January
Rock Hall, MD
- Average rainfall in January: 0.55"
The wettest months (with the highest rainfall) are July and August (1.81").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in January
Rock Hall, MD
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in January
Rock Hall, MD
- Average snowfall in January: 0.83"
The month with the highest snowfall is January (0.83").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in January
Rock Hall, MD
- Average snowfall days in January: 3 days
The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Rock Hall, MD
- Average sea temperature in January: 45.1°F
The best month for swimming (with the highest average sea temperature) is August (77.2°F).
The coldest month (with the lowest average sea temperature) is February (43.7°F).
Average daylight in January /
Average sunshine in January
Rock Hall, MD
- Average daylight in January: 9h and 5min
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 30min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in January
Rock Hall, MD
- Average sunshine days in January: 21.9 days
The months with the most sunshine days are January and November (21.9 days).
The month with the least sunshine days is July (14.1 days).
Average UV index in January
Rock Hall, MD
- 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 and December (UV index 2).
Average cloud cover in January
Rock Hall, MD
- Average cloud cover in January: 43
The months with the most cloud cover are February, March and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Rock Hall, MD
- 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).
Rock Hall, Maryland, USA
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