December weather forecastMariah Hill, IN
December
Weather in December
December, the first month of the winter in Mariah Hill, is still a chilly month, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 43.5°F (6.4°C).Temperature
In Mariah Hill, entering December brings a temperature decrement, reducing from November's cool 53.1°F (11.7°C) to a frosty 43.5°F (6.4°C). Mariah Hill reports a consistent average low-temperature of 31.8°F (-0.1°C) throughout December nights.Humidity
The average relative humidity in December is 79%.Rainfall
In Mariah Hill, during December, the rain falls for 8.4 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Mariah Hill, during the entire year, the rain falls for 131.3 days and collects up to 18.94" (481mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Mariah Hill. In Mariah Hill, in December, snow falls for 3.9 days, with typically accumulated 0.39" (10mm) of snow. In Mariah Hill, during the entire year, snow falls for 20 days and aggregates up to 3.27" (83mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:45 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:38 pm CST.
Sunshine
With an average of 4.4h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mariah Hill. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mariah Hill, IN
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 31.8°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 (25.3°F).
Average pressure in December
Mariah Hill, IN
- Average pressure in December: 30.14"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 December
Mariah Hill, IN
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Mariah Hill, IN
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Mariah Hill, IN
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is April (2.32").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in December
Mariah Hill, IN
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Mariah Hill, IN
- Average snowfall in December: 0.39"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mariah Hill, IN
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (6 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
Mariah Hill, IN
- Average daylight in December: 9h and 36min
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 December: 4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Mariah Hill, IN
- Average sunshine days in December: 18 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Mariah Hill, 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
Mariah Hill, IN
- Average cloud cover in December: 53
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 December
Mariah Hill, IN
- Average visibility in December: 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).
