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
Harlan's coldest month, January, registers temperatures that range from a high of 30.6°F (-0.8°C) to a low of 19°F (-7.2°C).Humidity
January and February, with an average relative humidity of 84%, are the most humid months.Rainfall
In Harlan, during January, the rain falls for 7.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 140.8 rainfall days, and 16.22" (412mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Harlan. In January, in Harlan, it is snowing for 12.2 days. Throughout January, 1.61" (41mm) of snow is accumulated. In Harlan, during the entire year, snow falls for 45.1 days and aggregates up to 7.8" (198mm) of snow.Daylight
In Harlan, Indiana, the average length of the day in January is 9h and 37min.On the first day of January in Harlan, sunrise is at 8:05 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:54 pm EST.
Sunshine
With an average of 3.4h of sunshine, January has the least sunshine of the year in Harlan.UV index
In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 2 in January suggests the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Harlan?
How cold is January in Harlan?
What are the most humid months in Harlan?
What is the average humidity in January in Harlan?
How many days does it rain in January in Harlan?
How many days does it snow in January in Harlan?
What is the average length of the day in January in Harlan?
When is the sunrise / sunset in January in Harlan?
What is the month with the least sunshine in Harlan?
How long on average sun shines in January in Harlan?
How high is the UV index in January in Harlan?
Average temperature in January
Harlan, IN
- Average high temperature in January: 30.6°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 (30.6°F).
- Average low temperature in January: 19°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in January
Harlan, IN
- Average pressure in January: 30.11"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Harlan, IN
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in January
Harlan, IN
- Average humidity in January: 84%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in January
Harlan, IN
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in January
Harlan, IN
- Average rainfall days in January: 7.4 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in January
Harlan, IN
- Average snowfall in January: 1.61"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Harlan, IN
- Average snowfall days in January: 12.2 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Harlan, 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 18min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in January
Harlan, IN
- Average sunshine days in January: 14 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in January
Harlan, IN
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Harlan, IN
- Average cloud cover in January: 65
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in January
Harlan, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Harlan, Indiana, USA
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