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
Johnston City records the coldest temperatures in January, averaging a high of 39°F (3.9°C) and a low of 26.1°F (-3.3°C).Humidity
The average relative humidity in January in Johnston City is 76%.Rainfall
In January, in Johnston City, the rain falls for 9.7 days. Throughout January, 2.4" (61mm) of precipitation is accumulated. In Johnston City, Illinois, during the entire year, the rain falls for 167.2 days and collects up to 37.68" (957mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Johnston City, in January, during 6.1 snowfall days, 1.46" (37mm) of snow is typically accumulated. In Johnston City, during the entire year, snow falls for 19.8 days and aggregates up to 6.57" (167mm) of snow.Daylight
The average length of the day in January is 9h and 54min.On the first day of the month, sunrise is at 7:11 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:00 am and sunset at 5:17 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.6h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 during January translates into the following directions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. During bright days, sunglasses that offer UVA and UVB defense are recommended. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Johnston City?
Is January cold in Johnston City?
What is the average humidity in January in Johnston City?
How many days does it rain in January in Johnston City?
How many days does it snow in January in Johnston City?
What is the average length of the day in January in Johnston City?
When are sunrise and sunset in January in Johnston City?
What is the month with the least sunshine in Johnston City?
How many hours of sunshine does Johnston City have in January?
What are the months with the lowest UV index in Johnston City?
What is the UV index reading in January in Johnston City?
Average temperature in January
Johnston City, IL
- Average high temperature in January: 39°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in January
Johnston City, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Johnston City, IL
- Average wind speed in January: 9.6mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in January
Johnston City, IL
- Average humidity in January: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Johnston City, IL
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Johnston City, IL
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in January
Johnston City, IL
- Average snowfall in January: 1.46"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Johnston City, IL
- Average snowfall days in January: 6.1 days
The month with the highest number of snowfall days is January (6.1 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
Johnston City, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Johnston City, IL
- Average sunshine days in January: 16.1 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in January
Johnston City, IL
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Johnston City, IL
- Average cloud cover in January: 50
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in January
Johnston City, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Johnston City, Illinois, USA
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