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
Rockville notes the coldest temperatures in January, with a high average of 32.4°F (0.2°C) and a low of 19.8°F (-6.8°C).Humidity
In Rockville, the average relative humidity in January is 78%.Rainfall
In Rockville, during January, the rain falls for 5.5 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Rockville, during the entire year, the rain falls for 105.6 days and collects up to 9.84" (250mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Rockville. In Rockville, in January, snow falls for 5.3 days, with typically accumulated 0.71" (18mm) of snow. Throughout the year, there are 23.1 snowfall days, and 4.69" (119mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 33min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:29 pm. On the last day of January, in Rockville, sunrise is at 7:03 am and sunset at 5:02 pm EST.
Sunshine
In Rockville, the average sunshine in January is 5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In January, an average UV index of 2 transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Rockville?
How cold is it in Rockville in January?
What is the average humidity in January in Rockville?
How many days does it rain in January in Rockville?
How much does it snow in Rockville in January?
What is the average length of the day in January in Rockville?
When are sunrise and sunset in January in Rockville?
How long on average sun shines in January in Rockville?
What is the month with the lowest UV index in Rockville?
What is the UV index reading in January in Rockville?
Average temperature in January
Rockville, CT
- Average high temperature in January: 32.4°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Rockville, CT
- Average pressure in January: 30.03"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Rockville, CT
- Average wind speed in January: 8.2mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in January
Rockville, CT
- Average humidity in January: 78%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall in January
Rockville, CT
- Average rainfall in January: 0.51"
The wettest months (with the highest rainfall) are May, June and July (1.1").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in January
Rockville, CT
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is June (12.1 days).
The months with the least rainy days are January and February (5.5 days).
Average snowfall in January
Rockville, CT
- Average snowfall in January: 0.71"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Rockville, CT
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rockville, CT
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Rockville, CT
- Average sunshine days in January: 21.9 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (15.7 days).
Average UV index in January
Rockville, CT
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Rockville, CT
- Average cloud cover in January: 46
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in January
Rockville, CT
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Rockville, Connecticut, USA
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