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
January is the coldest month, with the temperature often reaching an average high of 31.3°F (-0.4°C) and an average low of 19.8°F (-6.8°C).Humidity
In Heyworth, the average relative humidity in January is 81%.Rainfall
In Heyworth, in January, during 5.3 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Heyworth, Illinois, during the entire year, the rain falls for 124.4 days and collects up to 13.23" (336mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Heyworth. The month with the most snowfall is January, when snow falls for 8.5 days and typically aggregates up to 1.61" (41mm) of snow.Daylight
In Heyworth, the average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:18 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:12 pm CST.
Sunshine
The month with the least sunshine in Heyworth is January, with an average of 3.9h 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 Heyworth. A UV Index 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, 2 during January, leads to the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What time of the year is the coldest in Heyworth?
How cold is January in Heyworth?
What is the average humidity in January in Heyworth?
How many days does it rain in January in Heyworth?
When does it snow the most in Heyworth?
How much does it snow in Heyworth in January?
What is the average length of the day in January in Heyworth?
What time are sunrise and sunset in January in Heyworth?
What is the month with the least sunshine in Heyworth?
How long on average sun shines in January in Heyworth?
When is the lowest UV index in Heyworth?
What is the UV index reading in January in Heyworth?
Average temperature in January
Heyworth, IL
- Average high temperature in January: 31.3°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 (31.3°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Heyworth, IL
- 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 (29.92"Hg).
Average wind speed in January
Heyworth, IL
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in January
Heyworth, IL
- Average humidity in January: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Heyworth, IL
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in January
Heyworth, IL
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in January
Heyworth, IL
- Average snowfall in January: 1.61"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Heyworth, IL
- Average snowfall days in January: 8.5 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Heyworth, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Heyworth, IL
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in January
Heyworth, IL
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Heyworth, IL
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in January
Heyworth, IL
- 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).
Heyworth, Illinois, USA
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