December weather forecastGrandview Lake, IN
December
Weather in December
The first month of the winter, December, is still a cold month in Grandview Lake, Indiana, with an average temperature varying between 29.7°F (-1.3°C) and 40.6°F (4.8°C).Temperature
The beginning of December involves a decrease in the average high-temperature, transitioning from a fresh 51.1°F (10.6°C) in November to a wintry 40.6°F (4.8°C). An average low-temperature of 29.7°F (-1.3°C) marks the nights in Grandview Lake throughout December.Humidity
The months with the highest humidity in Grandview Lake are January, February, July and December, with an average relative humidity of 81%.Rainfall
In Grandview Lake, during December, the rain falls for 11.7 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 163.5 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grandview Lake are January through April, November and December. In Grandview Lake, during December, snow falls for 8.2 days and regularly aggregates up to 1.89" (48mm) of snow. In Grandview Lake, during the entire year, snow falls for 34.1 days and aggregates up to 8.54" (217mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Grandview Lake.On the first day of the month, sunrise is at 7:45 am and sunset at 5:21 pm. On the last day of December, in Grandview Lake, sunrise is at 8:03 am and sunset at 5:31 pm EST.
Sunshine
In Grandview Lake, the average sunshine in December is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Grandview Lake, Indiana. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grandview Lake, IN
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Grandview Lake, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Grandview Lake, IN
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Grandview Lake, IN
- Average humidity in December: 81%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Grandview Lake, IN
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Grandview Lake, IN
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in December
Grandview Lake, IN
- Average snowfall in December: 1.89"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Grandview Lake, IN
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (9.6 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
Grandview Lake, IN
- Average daylight in December: 9h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Grandview Lake, IN
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Grandview Lake, IN
- Average UV index in December: 2
The months with the highest UV index are 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
Grandview Lake, IN
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Grandview Lake, IN
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).
