December weather forecast
Milroy, IN

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Weather in December

The first month of the winter, December, is still a cold month in Milroy, Indiana, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 28.6°F (-1.9°C).

Temperature

With the onset of December, Milroy's average high-temperature adjusts, receding from November's frosty 49.5°F (9.7°C) to an icy 39°F (3.9°C). Throughout December, Milroy experiences a low-temperature average of 28.6°F (-1.9°C).

Humidity

January, July and December, with an average relative humidity of 82%, are the most humid months in Milroy, Indiana.

Rainfall

In Milroy, in December, it is raining for 11.5 days, with typically 2.64" (67mm) of accumulated precipitation. In Milroy, during the entire year, the rain falls for 172.9 days and collects up to 34.88" (886mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Milroy. In Milroy, in December, snow falls for 10.5 days, with typically accumulated 3.31" (84mm) of snow. In Milroy, during the entire year, snow falls for 42.9 days and aggregates up to 14.61" (371mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Milroy.
On the first day of December, sunrise is at 7:43 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:28 pm EST.

Sunshine

In Milroy, Indiana, the average sunshine in December is 3.9h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 1 suggests these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Milroy?

The average high-temperature, in December, in Milroy, is 39°F (3.9°C), while the average low-temperature is 28.6°F (-1.9°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the most humid month in Milroy?

The months with the highest humidity are January, July and December, with an average relative humidity of 82%.

What is the average humidity in December in Milroy?

In December, the average relative humidity is 82%.

How much does it rain in Milroy in December?

In Milroy, in December, during 11.5 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

How much does it snow in Milroy in December?

In Milroy, Indiana, in December, during 10.5 snowfall days, 3.31" (84mm) of snow is typically accumulated.

What is the month with the shortest days in Milroy?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December in Milroy?

In Milroy, Indiana, the average day length in December is 9h and 26min.

When is the sunrise / sunset in December in Milroy?

On the first day of December, sunrise is at 7:43 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:28 pm EST.

How many hours of sunshine does Milroy have in December?

The average sunshine duration in December in Milroy, Indiana, is 3.9h.

What is the month with the lowest UV index in Milroy?

December is the month with the lowest UV index in Milroy, with an average maximum UV index of 1.

What is the UV index reading in December in Milroy?

In Milroy, Indiana, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Milroy, IN

Average temperature in December - Milroy, IN
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in December
Milroy, IN

Average pressure in December - Milroy, 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
Milroy, IN

Average wind speed in December - Milroy, IN
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in December
Milroy, IN

Average humidity in December - Milroy, IN
  • Average humidity in December: 82%

The months with the highest relative humidity are January, July and December (82%).
The months with the lowest relative humidity are October and November (75%).

Average rainfall in December
Milroy, IN

Average rainfall in December - Milroy, IN
  • Average rainfall in December: 2.64"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in December
Milroy, IN

Average rainfall days in December - Milroy, IN
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (9.1 days).

Average snowfall in December
Milroy, IN

Average snowfall in December - Milroy, IN
  • Average snowfall in December: 3.31"

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Milroy, IN

Average snowfall days in December - Milroy, IN
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Milroy, IN

Average daylight in December / Average sunshine in December - Milroy, IN
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in December
Milroy, IN

Average sunshine days in December - Milroy, IN
  • Average sunshine days in December: 12 days

The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is May (9.3 days).

Average UV index in December
Milroy, IN

Average UV index in December - Milroy, IN
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Milroy, IN

Average cloud cover in December - Milroy, IN
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Milroy, IN

Average visibility in December - Milroy, IN
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).

Milroy, Indiana, USA

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