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
January
Weather in January
Temperature
Rockville's temperature records reveal January as the coldest month, marked by average highs of 18.7°F (-7.4°C) and lows of 5.4°F (-14.8°C).Humidity
January is the most humid month, with an average relative humidity of 91%.Rainfall
January is the month with the least rainfall. Rain falls for 2.2 days and accumulates 0.43" (11mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In January, in Rockville, it is snowing for 14.4 days. Throughout January, 2.68" (68mm) of snow is accumulated. Throughout the year, there are 61 snowfall days, and 16.81" (427mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 11min.On the first day of the month, sunrise is at 7:57 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:39 am and sunset at 5:21 pm CST.
Sunshine
The month with the least sunshine in Rockville is January, with an average of 3.3h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 1 in January translates into this advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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 most humid month in Rockville?
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 in Rockville?
How many hours of daylight does Rockville have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Rockville have in January?
When is the lowest UV index?
What is the UV index reading in January in Rockville?
Average temperature in January
Rockville, MN
- Average high temperature in January: 18.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (18.7°F).
- Average low temperature in January: 5.4°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in January
Rockville, MN
- Average pressure in January: 30.14"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Rockville, MN
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in January
Rockville, MN
- Average humidity in January: 91%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in January
Rockville, MN
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in January
Rockville, MN
- Average rainfall days in January: 2.2 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in January
Rockville, MN
- Average snowfall in January: 2.68"
The month with the highest snowfall is December (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rockville, MN
- Average snowfall days in January: 14.4 days
The month with the highest number of snowfall days is January (14.4 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, MN
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in January
Rockville, MN
- Average sunshine days in January: 16.6 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in January
Rockville, MN
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Rockville, MN
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in January
Rockville, MN
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).