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 brings the lowest temperatures, with an average high of 39.2°F (4°C) and an average low of 27.9°F (-2.3°C).Humidity
January, March, April and November, with an average relative humidity of 74%, are the least humid months.Rainfall
In Heather Heights, in January, during 6.3 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Heather Heights, during the entire year, the rain falls for 107.5 days and collects up to 10.67" (271mm) of precipitation.Snowfall
Months with snowfall in Heather Heights, Maryland, are January through March, November and December. The month with the most snowfall in Heather Heights is January, when snow falls for 3.1 days and typically aggregates up to 0.59" (15mm) of snow.Daylight
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 7:12 am and sunset at 5:23 pm EST.
Sunshine
In January, the average sunshine 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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What is the coldest time of year in Heather Heights?
Is January cold in Heather Heights?
What are the least humid months in Heather Heights?
What is the average humidity in January in Heather Heights?
How many days does it rain in January in Heather Heights?
What is the snowiest month in Heather Heights?
How much does it snow in Heather Heights in January?
How many hours of daylight does Heather Heights have in January?
What time are sunrise and sunset in January in Heather Heights?
How many hours of sunshine does Heather Heights have in January?
What are the months with the lowest UV index in Heather Heights?
What is the UV index intensity in January in Heather Heights?
Average temperature in January
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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
Heather Heights, 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).
Heather Heights, Maryland, USA
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