Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December brings a decrease in the average high-temperature, falling from November's cool 51.4°F (10.8°C) to a cold 41.2°F (5.1°C). Lyons registers a consistent average low-temperature of 29.8°F (-1.2°C) during December.Humidity
The average relative humidity in December is 80%.Rainfall
In Lyons, Indiana, in December, it is raining for 6.1 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, in Lyons, there are 107 rainfall days, and 9.45" (240mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Lyons. In Lyons, in December, during 4.9 snowfall days, 0.24" (6mm) of snow is typically accumulated. In Lyons, during the entire year, snow falls for 20 days and aggregates up to 1.54" (39mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 5:26 pm. On the last day of December, sunrise is at 8:07 am and sunset at 5:36 pm EST.
Sunshine
The month with the least sunshine in Lyons is December, with an average of 4.4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Lyons in December?
What is the average humidity in December in Lyons?
How much does it rain in Lyons in December?
How many days does it snow in December in Lyons?
What is the month with the shortest days in Lyons?
What is the average length of the day in December in Lyons?
When is the sunrise / sunset in December in Lyons?
What is the month with the least sunshine in Lyons?
How many hours of sunshine does Lyons have in December?
What is the month with the lowest UV index in Lyons?
How high is the UV index in December in Lyons?
Average temperature in December
Lyons, IN
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Lyons, IN
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Lyons, IN
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Lyons, IN
- Average humidity in December: 80%
The months with the highest relative humidity are May and July (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Lyons, IN
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is April (1.06").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in December
Lyons, IN
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (6.1 days).
Average snowfall in December
Lyons, IN
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Lyons, IN
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lyons, IN
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Lyons, IN
- Average sunshine days in December: 21 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in December
Lyons, IN
- Average UV index in December: 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, November and December (UV index 2).
Average cloud cover in December
Lyons, IN
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Lyons, IN
- Average visibility in December: 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).
Lyons, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location