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
The coldest period is January, when temperatures fluctuate between an average high of 33.4°F (0.8°C) and a low of 21°F (-6.1°C).Humidity
In Rockville, the average relative humidity in January is 81%.Rainfall
In January, the rain falls for 7.5 days. Throughout January, 1.38" (35mm) of precipitation is accumulated. Throughout the year, in Rockville, there are 138.6 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In January, it is snowing for 7.1 days. Throughout January, 1.18" (30mm) of snow is accumulated. In Rockville, Indiana, during the entire year, snow falls for 24 days and aggregates up to 6.14" (156mm) of snow.Daylight
In Rockville, the average length of the day in January is 9h and 44min.On the first day of January in Rockville, sunrise is at 8:09 am and sunset at 5:34 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 6:06 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 4.3h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rockville. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What part of the year is the coldest 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?
What is the month with the least sunshine in Rockville?
How many hours of sunshine does Rockville have in January?
When is the lowest UV index in Rockville?
What is the UV index intensity in January in Rockville?
Average temperature in January
Rockville, IN
- Average high temperature in January: 33.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in January: 21°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in January
Rockville, IN
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Rockville, IN
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
Rockville, IN
- Average humidity in January: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Rockville, IN
- Average rainfall in January: 1.38"
The wettest months (with the highest rainfall) are April and May (2.52").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in January
Rockville, IN
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in January
Rockville, IN
- Average snowfall in January: 1.18"
The month with the highest snowfall is December (1.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Rockville, IN
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is January (7.1 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
Rockville, IN
- Average daylight in January: 9h and 4min
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 24min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Rockville, IN
- Average sunshine days in January: 18 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (10 days).
Average UV index in January
Rockville, IN
- 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, November and December (UV index 2).
Average cloud cover in January
Rockville, IN
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in January
Rockville, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Rockville, Indiana, USA
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