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
The coldest time of the year is January, with temperatures averaging a high of 39.7°F (4.3°C) and a low of 26.6°F (-3°C).Humidity
In January, the average relative humidity is 78%.Rainfall
In January, in Derby, the rain falls for 9 days. Throughout January, 1.18" (30mm) of precipitation is accumulated. In Derby, Indiana, during the entire year, the rain falls for 133.4 days and collects up to 17.99" (457mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall in Derby is January, when snow falls for 5.7 days and typically aggregates up to 1.3" (33mm) of snow.Daylight
In January, the average length of the day in Derby, Indiana, is 9h and 53min.On the first day of January in Derby, sunrise is at 7:02 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:07 pm CST.
Sunshine
The months with the least sunshine in Derby, Indiana, are January and February, with an average of 4.3h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Derby. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly 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 is the coldest time of year in Derby?
How cold is January in Derby?
What is the average humidity in January in Derby?
How many days does it rain in January in Derby?
When does it snow the most in Derby?
How much does it snow in Derby in January?
What is the average length of the day in January in Derby?
When is the sunrise / sunset in January in Derby?
What are the months with the least sunshine in Derby?
How many hours of sunshine does Derby have in January?
What is the month with the lowest UV index in Derby?
How high is the UV index in January in Derby?
Average temperature in January
Derby, IN
- Average high temperature in January: 39.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in January: 26.6°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in January
Derby, IN
- 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 (29.95"Hg).
Average wind speed in January
Derby, IN
- Average wind speed in January: 8.1mph
The windiest months (with the highest average wind speed) are January, February and April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in January
Derby, IN
- Average humidity in January: 78%
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Derby, IN
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is April (2.13").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days in January
Derby, IN
- Average rainfall days in January: 9 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is October (8.4 days).
Average snowfall in January
Derby, IN
- Average snowfall in January: 1.3"
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Derby, IN
- Average snowfall days in January: 5.7 days
The month with the highest number of snowfall days is February (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
Derby, IN
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in January
Derby, IN
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in January
Derby, IN
- 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
Derby, IN
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Derby, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
Derby, Indiana, USA
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