December weather forecast
Rochford, SD

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Weather in December

The Rochford weather in December signifies the full arrival of winter. A steep drop in temperatures and short days make way for long, cold nights and freezing mornings. The amount of snowfall in December rises up to 3.78" (96mm), marking the beginning of a snowy period. As Rochford gets decked up in festive decorations, the snow covered landscapes add charm to the holiday season. Despite the harsh winter, December has a unique charm with the city embracing the holiday spirit in its cold wrap.

Temperature

December is the coldest month in Rochford, exhibiting average temperatures of 29.7°F (-1.3°C) at the peak and 16.7°F (-8.5°C) at the base.

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Rochford, in December, it is raining for 4.2 days, with typically 0.67" (17mm) of accumulated precipitation. In Rochford, during the entire year, the rain falls for 96.1 days and collects up to 14.02" (356mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Rochford. In Rochford, in December, during 10.1 snowfall days, 3.78" (96mm) of snow is typically accumulated. Throughout the year, there are 66.6 snowfall days, and 34.53" (877mm) of snow is accumulated.

Daylight

The month with the shortest days in Rochford is December, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:26 pm MST.

Sunshine

In December, the average sunshine is 6h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Rochford. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the UV index of 2 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Rochford?

December, noted for its average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 16.7°F (-8.5°C), is considered the coldest month.

How cold is it in Rochford in December?

An average high-temperature, in December, in Rochford, is 29.7°F (-1.3°C) and the average low-temperature is 16.7°F (-8.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 82.4°F (28°C).

What is the average humidity in December in Rochford?

In December, the average relative humidity in Rochford, South Dakota, is 77%.

How many days does it rain in December in Rochford?

In Rochford, South Dakota, in December, during 4.2 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How much does it snow in Rochford in December?

In December, in Rochford, South Dakota, it is snowing for 10.1 days. Throughout December, 3.78" (96mm) of snow is accumulated.

What is the month with the shortest days in Rochford?

The month with the shortest days is December, with an average of 8h and 54min of daylight.

How many hours of daylight does Rochford have in December?

In December, the average day length is 8h and 56min.

When are sunrise and sunset in December in Rochford?

On the first day of December, sunrise is at 7:10 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:26 pm MST.

How many hours of sunshine does Rochford have in December?

In Rochford, South Dakota, the average sunshine duration in December is 6h.

When is the lowest UV index in Rochford?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in December in Rochford?

The average daily maximum UV index in December is 2. 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
Rochford, SD

Average temperature in December - Rochford, SD
  • Average high temperature in December: 29.7°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).

  • Average low temperature in December: 16.7°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).

Average pressure in December
Rochford, SD

Average pressure in December - Rochford, SD
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in December
Rochford, SD

Average wind speed in December - Rochford, SD
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).

Average humidity in December
Rochford, SD

Average humidity in December - Rochford, SD
  • Average humidity in December: 77%

The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).

Average rainfall in December
Rochford, SD

Average rainfall in December - Rochford, SD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in December
Rochford, SD

Average rainfall days in December - Rochford, SD
  • Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).

Average snowfall in December
Rochford, SD

Average snowfall in December - Rochford, SD
  • Average snowfall in December: 3.78"

The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Rochford, SD

Average snowfall days in December - Rochford, SD
  • Average snowfall days in December: 10.1 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Rochford, SD

Average daylight in December / Average sunshine in December - Rochford, SD
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in December
Rochford, SD

Average sunshine days in December - Rochford, SD
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Rochford, SD

Average UV index in December - Rochford, SD
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Rochford, SD

Average cloud cover in December - Rochford, SD
  • Average cloud cover in December: 37

The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in December
Rochford, SD

Average visibility in December - Rochford, SD
  • Average visibility in December: 6mi

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

Rochford, South Dakota, USA

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