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
Temperature readings reach their annual highs in January, averaging 30°F (-1.1°C) and a minimum average of 18.9°F (-7.3°C).Humidity
In January, the average relative humidity in Merrillville is 82%.Rainfall
In Merrillville, Indiana, during January, the rain falls for 5.6 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, in Merrillville, there are 146.6 rainfall days, and 23.31" (592mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Merrillville, in January, during 12.4 snowfall days, 3.23" (82mm) of snow is typically accumulated. Throughout the year, in Merrillville, Indiana, there are 45.5 snowfall days, and 12.64" (321mm) of snow is accumulated.Daylight
In January, the average length of the day in Merrillville is 9h and 35min.On the first day of the month, sunrise is at 7:15 am and sunset at 4:29 pm. On the last day of January, in Merrillville, sunrise is at 7:01 am and sunset at 5:03 pm CST.
Sunshine
With an average of 3.5h of sunshine, January has the least sunshine of the year in Merrillville.UV index
The months with the lowest UV index in Merrillville, Indiana, are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 1 during January translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What is the coldest month in Merrillville?
How cold is January in Merrillville?
What is the average humidity in January in Merrillville?
How much does it rain in Merrillville in January?
How many days does it snow in January in Merrillville?
What is the average length of the day in January in Merrillville?
When are sunrise and sunset in January in Merrillville?
What is the month with the least sunshine in Merrillville?
How many hours of sunshine does Merrillville have in January?
What is the month with the lowest UV index in Merrillville?
How high is the UV index in January in Merrillville?
Average temperature in January
Merrillville, IN
- Average high temperature in January: 30°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
Merrillville, IN
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Merrillville, IN
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Merrillville, IN
- Average humidity in January: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Merrillville, IN
- Average rainfall in January: 1.1"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in January
Merrillville, IN
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in January
Merrillville, IN
- Average snowfall in January: 3.23"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Merrillville, IN
- Average snowfall days in January: 12.4 days
The month with the highest number of snowfall days is January (12.4 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
Merrillville, IN
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
Merrillville, IN
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in January
Merrillville, IN
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Merrillville, IN
- Average cloud cover in January: 64
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in January
Merrillville, IN
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Merrillville, Indiana, USA
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