December weather forecast
Ephraim, WI

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Weather in December

December welcomes the winter season in Ephraim, with temperatures continuing their downward trend from November. With the chill setting in, the first real snowfall of the season occurs, measuring up to 2.99". The daylight hours are noticeably shorter, while the sea temperatures mark their lowest levels. A sharp hike in snowfall days possibly defines the weather during this month. Overall, December marks the advent of winter in Ephraim with a considerable fall in temperatures and a steady increase in snowfall.

Temperature

Onset of December in Ephraim witnesses a reduction in the average high-temperature, falling from an icy 41.7°F in November to a subzero cold 31.1°F. Ephraim's nighttime temperature in December consistently rests at a still freezing cold 25.5°F.

Humidity

In Ephraim, the average relative humidity in December is 81%.

Rainfall

In Ephraim, Wisconsin, during December, the rain falls for 7.5 days and regularly aggregates up to 2.09" of precipitation. Throughout the year, in Ephraim, there are 141.7 rainfall days, and 26.93" of precipitation is accumulated.

Snowfall

Months with snowfall in Ephraim, Wisconsin, are January through May, October through December. In December, it is snowing for 12.4 days. Throughout December, 2.99" of snow is accumulated. Throughout the year, in Ephraim, there are 62.3 snowfall days, and 15.83" of snow is accumulated.

Ocean temperature

In Ephraim, in December, the average water temperature is 41°F.
Note: Swimming in 41°F at temperatures under 50°F requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F feels frosty.

Daylight

The month with the shortest days in Ephraim is December, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:08 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:15 pm CST.

Sunshine

In Ephraim, the average sunshine in December is 3.2h.

UV index

The months with the lowest UV index in Ephraim are January, March and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, an average UV index of 1 transforms into the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

How cold is December in Ephraim?

In December, in Ephraim, the average high-temperature is 31.1°F, and the average low-temperature is 25.5°F.

What is the average humidity in December in Ephraim?

In December, the average relative humidity is 81%.

How much does it rain in Ephraim in December?

In Ephraim, during December, the rain falls for 7.5 days and regularly aggregates up to 2.09" of precipitation.

How much does it snow in Ephraim in December?

In Ephraim, in December, during 12.4 snowfall days, 2.99" of snow is typically accumulated.

What is the ocean temperature in December in Ephraim?

In December, the average ocean temperature in Ephraim is 41°F. At temperatures below 50°F, swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F is not comfortable.

What is the month with the shortest days in Ephraim?

The month with the shortest days in Ephraim, Wisconsin, is December, with an average of 8h and 48min of daylight.

How many hours of daylight does Ephraim have in December?

In Ephraim, the average day length in December is 8h and 49min.

What time are sunrise and sunset in December in Ephraim?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:08 pm. On the last day of the month, in Ephraim, Wisconsin, sunrise is at 7:27 am and sunset at 4:15 pm CST.

How many hours of sunshine does Ephraim have in December?

In Ephraim, Wisconsin, the average sunshine duration in December is 3.2h.

What are the months with the lowest UV index in Ephraim?

January, March and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in December in Ephraim?

In Ephraim, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Ephraim, WI

Average temperature in December - Ephraim, WI
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

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Average pressure in December
Ephraim, WI

Average pressure in December - Ephraim, WI
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Ephraim, WI

Average wind speed in December - Ephraim, WI
  • Average wind speed in December: 15.5mph

The windiest month (with the highest average wind speed) is December (15.5mph).
The calmest months (with the lowest average wind speed) are June and July (9.6mph).

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Average humidity in December
Ephraim, WI

Average humidity in December - Ephraim, WI
  • Average humidity in December: 81%

The months with the highest relative humidity are January and June (84%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in December
Ephraim, WI

Average rainfall in December - Ephraim, WI
  • Average rainfall in December: 2.09"

The wettest month (with the highest rainfall) is October (3.07").
The driest months (with the least rainfall) are January and February (1.38").

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Average rainfall days in December
Ephraim, WI

Average rainfall days in December - Ephraim, WI
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in December
Ephraim, WI

Average snowfall in December - Ephraim, WI
  • Average snowfall in December: 2.99"

The month with the highest snowfall is February (4.49").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Ephraim, WI

Average snowfall days in December - Ephraim, WI
  • Average snowfall days in December: 12.4 days

The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Ephraim, WI

Average sea temperature in December - Ephraim, WI
  • Average sea temperature in December: 41°F

The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest months (with the lowest average sea temperature) are March and April (36°F).

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Average daylight in December /
Average sunshine in December
Ephraim, WI

Average daylight in December / Average sunshine in December - Ephraim, WI
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Ephraim, WI

Average sunshine days in December - Ephraim, WI
  • Average sunshine days in December: 10.3 days

The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is January (8.3 days).

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Average UV index in December
Ephraim, WI

Average UV index in December - Ephraim, WI
  • Average UV index in December: 1

The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).

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Average cloud cover in December
Ephraim, WI

Average cloud cover in December - Ephraim, WI
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in December
Ephraim, WI

Average visibility in December - Ephraim, WI
  • Average visibility in December: 5mi

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

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Ephraim, Wisconsin, USA

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