December weather forecast
Robinson, IA

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Weather in December

The first month of the winter, December, is still a freezing cold month in Robinson, Iowa, with an average temperature ranging between min 20.5°F (-6.4°C) and max 31.1°F (-0.5°C).

Temperature

As December arrives, Robinson's weather displays a decrease in high-temperatures, transitioning from November's frosty 43.7°F (6.5°C) to a freezing cold 31.1°F (-0.5°C). Robinson cools down to an average low-temperature of 20.5°F (-6.4°C) throughout the month of December.

Humidity

The average relative humidity in December in Robinson, Iowa, is 83%.

Rainfall

December is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Robinson, in December, during 8.8 snowfall days, 0.94" (24mm) of snow is typically accumulated. In Robinson, during the entire year, snow falls for 39.4 days and aggregates up to 6.81" (173mm) of snow.

Daylight

The month with the shortest days in Robinson is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:16 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:43 pm CST.

Sunshine

The average sunshine in December is 4h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 1 transforms into these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is December in Robinson?

The high-temperature, in December, in Robinson, is 31.1°F (-0.5°C), while the low-temperature averages to 20.5°F (-6.4°C).

What is the average humidity in December in Robinson?

In Robinson, Iowa, the average relative humidity in December is 83%.

What is the driest month in Robinson?

The month with the least rainfall in Robinson is December, when the rain falls for 4.5 days and typically collects 0.47" (12mm) of precipitation.

How much does it rain in Robinson in December?

In Robinson, Iowa, in December, during 4.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

How many days does it snow in December in Robinson?

In Robinson, in December, snow falls for 8.8 days, with typically accumulated 0.94" (24mm) of snow.

What is the month with the shortest days in Robinson?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

How many hours of daylight does Robinson have in December?

The average day length in December in Robinson is 9h and 8min.

When are sunrise and sunset in December in Robinson?

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 4:34 pm. On the last day of the month, in Robinson, Iowa, sunrise is at 7:35 am and sunset at 4:43 pm CST.

How long on average sun shines in December in Robinson?

In December, the average sunshine duration in Robinson is 4h.

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

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

How high is the UV index in December in Robinson?

In Robinson, 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
Robinson, IA

Average temperature in December - Robinson, IA
  • Average high temperature in December: 31.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 20.5°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

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Average pressure in December
Robinson, IA

Average pressure in December - Robinson, IA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Robinson, IA

Average wind speed in December - Robinson, IA
  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in December
Robinson, IA

Average humidity in December - Robinson, IA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (75%).

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Average rainfall in December
Robinson, IA

Average rainfall in December - Robinson, IA
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is December (0.47").

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Average rainfall days in December
Robinson, IA

Average rainfall days in December - Robinson, IA
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in December
Robinson, IA

Average snowfall in December - Robinson, IA
  • Average snowfall in December: 0.94"

The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Robinson, IA

Average snowfall days in December - Robinson, IA
  • Average snowfall days in December: 8.8 days

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Robinson, IA

Average daylight in December / Average sunshine in December - Robinson, IA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 0min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in December
Robinson, IA

Average sunshine days in December - Robinson, IA
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is June (11.7 days).

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Average UV index in December
Robinson, IA

Average UV index in December - Robinson, IA
  • Average UV index in December: 1

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

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Average cloud cover in December
Robinson, IA

Average cloud cover in December - Robinson, IA
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).

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Average visibility in December
Robinson, IA

Average visibility in December - Robinson, IA
  • Average visibility in December: 6mi

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

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Robinson, Iowa, USA

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