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
Rocky Hill's temperature records reveal January as the coldest month, marked by average highs of 33.4°F (0.8°C) and lows of 21.2°F (-6°C).Humidity
In January, the average relative humidity is 76%.Rainfall
In January, the rain falls for 9.2 days. Throughout January, 2.2" (56mm) of precipitation is accumulated. In Rocky Hill, Connecticut, during the entire year, the rain falls for 164.5 days and collects up to 32.09" (815mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In January, it is snowing for 7.1 days. Throughout January, 2.87" (73mm) of snow is accumulated. Throughout the year, there are 29.1 snowfall days, and 15.63" (397mm) of snow is accumulated.Daylight
In Rocky Hill, the average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:03 am and sunset at 5:04 pm EST.
Sunshine
In January, the average sunshine is 5.1h.UV index
In Rocky Hill, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, an average UV index of 2 transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Rocky Hill have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Rocky Hill, CT
- Average high temperature in January: 33.4°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in January: 21.2°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in January
Rocky Hill, CT
- Average pressure in January: 30.03"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Rocky Hill, CT
- Average wind speed in January: 8.1mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in January
Rocky Hill, CT
- Average humidity in January: 76%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in January
Rocky Hill, CT
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in January
Rocky Hill, CT
- Average rainfall days in January: 9.2 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in January
Rocky Hill, CT
- Average snowfall in January: 2.87"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Rocky Hill, CT
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rocky Hill, CT
- Average daylight in January: 9h and 4min
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 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Rocky Hill, CT
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in January
Rocky Hill, CT
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Rocky Hill, CT
- Average cloud cover in January: 45
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in January
Rocky Hill, CT
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
Rocky Hill, Connecticut, USA
Weather forecast for your location
2. Allow the app to use your location