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 coldest month, January, generally records average temperatures ranging from a high of 37°F (2.8°C) to a low of 23.5°F (-4.7°C).Humidity
The months with the highest humidity in Rocky Hill are January and February, with an average relative humidity of 82%.Rainfall
In Rocky Hill, in January, during 7.7 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Rocky Hill, during the entire year, the rain falls for 124.7 days and collects up to 13.74" (349mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In January, in Rocky Hill, it is snowing for 7.6 days. Throughout January, 0.94" (24mm) of snow is accumulated. Throughout the year, there are 26.7 snowfall days, and 4.37" (111mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 48min.On the first day of January, sunrise is at 7:48 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:49 pm EST.
Sunshine
With an average of 3.6h of sunshine, January has the least sunshine of the year.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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during January translates into these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is January?
What is the most humid month?
What is the average humidity in January?
How much 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 are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Rocky Hill?
When is the lowest UV index in Rocky Hill?
How high is the UV index in January?
Average temperature in January
Rocky Hill, OH
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 23.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in January
Rocky Hill, OH
- Average pressure in January: 30.15"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Rocky Hill, OH
- Average wind speed in January: 7.4mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
Rocky Hill, OH
- Average humidity in January: 82%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are August and September (75%).
Average rainfall in January
Rocky Hill, OH
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is May (1.57").
The driest months (with the least rainfall) are September and November (0.75").
Average rainfall days in January
Rocky Hill, OH
- Average rainfall days in January: 7.7 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in January
Rocky Hill, OH
- Average snowfall in January: 0.94"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Rocky Hill, OH
- Average snowfall days in January: 7.6 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rocky Hill, OH
- 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Rocky Hill, OH
- Average sunshine days in January: 17.3 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is May (13.3 days).
Average UV index in January
Rocky Hill, OH
- 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
Rocky Hill, OH
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Rocky Hill, OH
- Average visibility in January: 5mi
The months with the highest visibility are March, April, October and November (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and December (5mi).
Rocky Hill, Ohio, USA
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