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, with its high-temperature average of 39.2°F (4°C) and a low-temperature average of 27.9°F (-2.3°C), is the coldest month.Humidity
The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.Rainfall
In Rolphs, during January, the rain falls for 6.3 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 107.5 rainfall days, and 10.67" (271mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 3.1 days and accumulates 0.59" (15mm) of snow.Daylight
In Rolphs, the average length of the day in January is 9h and 47min.On the first day of January, sunrise is at 7:23 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:23 pm EST.
Sunshine
In Rolphs, the average sunshine in January is 5.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in January translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What is the least humid month?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How many days does it snow in January?
How many hours of daylight does Rolphs have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Rolphs have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Rolphs, MD
- Average high temperature in January: 39.2°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in January: 27.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in January
Rolphs, 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
Rolphs, MD
- Average wind speed in January: 9.3mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Rolphs, MD
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in January
Rolphs, MD
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in January
Rolphs, MD
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in January
Rolphs, MD
- Average snowfall in January: 0.59"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Rolphs, MD
- Average snowfall days in January: 3.1 days
The month with the highest number of snowfall days is January (3.1 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
Rolphs, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in January
Rolphs, MD
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in January
Rolphs, 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 and December (UV index 2).
Average cloud cover in January
Rolphs, MD
- Average cloud cover in January: 43
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in January
Rolphs, 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).
Rolphs, Maryland, USA
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