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, having an average high-temperature of 36.7°F (2.6°C) and an average low-temperature of 25°F (-3.9°C), is the coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 5.3 days and typically collects 0.55" (14mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Rosemont, in January, snow falls for 4.5 days, with typically accumulated 0.87" (22mm) of snow. In Rosemont, during the entire year, snow falls for 15.1 days and aggregates up to 3.66" (93mm) of snow.Daylight
In Rosemont, Pennsylvania, the average length of the day in January is 9h and 43min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in January is 4.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is January?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
How many days does it snow in January?
How many hours of daylight does Rosemont have in January?
What time are sunrise and sunset in January in Rosemont?
How long on average sun shines in January?
When is the lowest UV index in Rosemont?
What is the UV index intensity in January?
Average temperature in January
Rosemont, PA
- Average high temperature in January: 36.7°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in January: 25°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°F).
Average pressure in January
Rosemont, 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
Rosemont, PA
- Average wind speed in January: 8.2mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Rosemont, PA
- Average humidity in January: 75%
The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).
Average rainfall in January
Rosemont, PA
- Average rainfall in January: 0.55"
The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in January
Rosemont, PA
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in January
Rosemont, PA
- Average snowfall in January: 0.87"
The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Rosemont, PA
- Average snowfall days in January: 4.5 days
The month with the highest number of snowfall days is January (4.5 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
Rosemont, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Rosemont, PA
- Average sunshine days in January: 21.9 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).
Average UV index in January
Rosemont, 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
Rosemont, PA
- Average cloud cover in January: 46
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Rosemont, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Rosemont, Pennsylvania, USA
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