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
The onset of December is marked by a decrease in temperature, transitioning from a frosty 47.8°F (8.8°C) in November to an icy 37.6°F (3.1°C). An average minimum temperature of 27.1°F (-2.7°C) marks the month of December.Humidity
In December, the average relative humidity is 84%.Rainfall
In Millheim, in December, it is raining for 10.6 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 175.8 rainfall days, and 32.32" (821mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 14.9 days. Throughout December, 5.43" (138mm) of snow is accumulated. In Millheim, Ohio, during the entire year, snow falls for 71.6 days and aggregates up to 27.09" (688mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:58 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:07 pm EST.
Sunshine
In Millheim, the average sunshine in December is 3.2h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 1 during December translates into the following guidance:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December in Millheim?
How much does it rain in Millheim in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Millheim, OH
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Millheim, OH
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Millheim, OH
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is July (5.3mph).
Average humidity in December
Millheim, OH
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in December
Millheim, OH
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Millheim, OH
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Millheim, OH
- Average snowfall in December: 5.43"
The month with the highest snowfall is January (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Millheim, OH
- Average snowfall days in December: 14.9 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Millheim, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Millheim, OH
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is November (13.1 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in December
Millheim, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Millheim, OH
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Millheim, OH
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July and August (6mi).
The months with the lowest visibility are January and February (4mi).
Millheim, Ohio, USA
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