January weather forecast
Gray, IA

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Weather in January

January, like December, is another subzero cold winter month in Gray, Iowa, with an average temperature varying between 26.6°F (-3°C) and 13.8°F (-10.1°C).

Temperature

The coldest period is January, when temperatures fluctuate between an average high of 26.6°F (-3°C) and a low of 13.8°F (-10.1°C).

Humidity

The most humid month is January, with an average relative humidity of 84%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Gray. In Gray, in January, snow falls for 10.1 days, with typically accumulated 3.7" (94mm) of snow. In Gray, during the entire year, snow falls for 41.5 days and aggregates up to 18.23" (463mm) of snow.

Daylight

In Gray, the average length of the day in January is 9h and 33min.
On the first day of the month, sunrise is at 7:47 am and sunset at 4:59 pm. On the last day of January, in Gray, sunrise is at 7:33 am and sunset at 5:33 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4.2h of sunshine.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 2 during January translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What part of the year is the coldest in Gray?

In Gray, January is the coldest month, with temperatures averaging a high of 26.6°F (-3°C) and a low of 13.8°F (-10.1°C).

How cold is January in Gray?

The high-temperature in Gray, Iowa, during January is 26.6°F (-3°C) and the low-temperature is 13.8°F (-10.1°C).

What is the most humid month in Gray?

January is the most humid month, with an average relative humidity of 84%.

What is the average humidity in January in Gray?

The average relative humidity in January is 84%.

What is the driest month in Gray?

The month with the least rainfall in Gray, Iowa, is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.

How much does it rain in Gray in January?

In Gray, Iowa, in January, during 3.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

How many days does it snow in January in Gray?

In Gray, in January, during 10.1 snowfall days, 3.7" (94mm) of snow is typically accumulated.

How many hours of daylight does Gray have in January?

The average day length in January in Gray is 9h and 33min.

What time are sunrise and sunset in January in Gray?

On the first day of January in Gray, Iowa, sunrise is at 7:47 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:33 pm CST.

What is the month with the least sunshine in Gray?

With an average of 4.2h of sunshine, January has the least sunshine of the year in Gray, Iowa.

How many hours of sunshine does Gray have in January?

The average sunshine duration in January is 4.2h.

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

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

What is the UV index intensity in January in Gray?

The average daily maximum UV index in January in Gray, Iowa, is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to 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 January
Gray, IA

Average temperature in January - Gray, IA
  • Average high temperature in January: 26.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in January: 13.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in January
Gray, IA

Average pressure in January - Gray, IA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in January
Gray, IA

Average wind speed in January - Gray, IA
  • Average wind speed in January: 11mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

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Average humidity in January
Gray, IA

Average humidity in January - Gray, IA
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (69%).

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Average rainfall in January
Gray, IA

Average rainfall in January - Gray, IA
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in January
Gray, IA

Average rainfall days in January - Gray, IA
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in January
Gray, IA

Average snowfall in January - Gray, IA
  • Average snowfall in January: 3.7"

The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Gray, IA

Average snowfall days in January - Gray, IA
  • Average snowfall days in January: 10.1 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Gray, IA

Average daylight in January / Average sunshine in January - Gray, IA
  • Average daylight in January: 9h and 4min

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 12min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in January
Gray, IA

Average sunshine days in January - Gray, IA
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in January
Gray, IA

Average UV index in January - Gray, IA
  • Average UV index in January: 2

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

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Average cloud cover in January
Gray, IA

Average cloud cover in January - Gray, IA
  • Average cloud cover in January: 55

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in January
Gray, IA

Average visibility in January - Gray, IA
  • Average visibility in January: 5mi

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).

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Gray, Iowa, USA

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