January weather forecast
Newton, IA

Weather in January

January, the same as December, in Newton, Iowa, is a freezing cold winter month, with temperature in the range of an average high of 27.1°F (-2.7°C) and an average low of 14.4°F (-9.8°C).

Temperature

With an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 14.4°F (-9.8°C), January is the coldest month.

Humidity

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

Rainfall

Months with the least rainfall are January, February and December Rain falls for 3.8 days and accumulates 0.39" (10mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Newton. The month with the most snowfall in Newton is January when snow falls for 8.4 days and typically aggregates up to 1.73" (44mm) of snow.

Daylight

In January, the average length of the day is 9.6h.

Sunshine

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

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Newton?

The coldest month in Newton is January, with an average high-temperature of 27.1°F (-2.7°C) and an average low-temperature of 14.4°F (-9.8°C).

What is the most humid month in Newton?

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

What is the average humidity in January in Newton?

In Newton, Iowa, the average relative humidity in January is 84%.

What is the driest month in Newton?

January, February and December are months with the least rain in Newton when the rain falls for 3.8 days and typically aggregates up to 0.39" (10mm) of rain.

How many days does it rain in January in Newton?

In Newton, in January, during 3.8 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

When does it snow the most in Newton?

January is the month with the most snowfall. Snow falls for 8.4 days and accumulates 1.73" (44mm) of snow.

How many days does it snow in January in Newton?

In January, in Newton, Iowa, it is snowing for 8.4 days. Throughout January, 1.73" (44mm) of snow is accumulated.

How many hours of daylight does Newton have in January?

In Newton, Iowa, the average length of the day in January is 9.6h.

What is the month with the least sunshine in Newton?

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

How many hours of sunshine does Newton have in January?

In Newton, the average sunshine in January is 4.2h.

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

Months with the lowest UV index in Newton are January and December, with an average maximum UV index of 1.

What is the UV index reading in January in Newton?

In Newton, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.

Average temperature in January
Newton, IA

Average temperature in January - Newton, IA
  • Average high temperature in January: -2.7°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (-2.7°C).

  • Average low temperature in January: -9.8°C

The month with the highest average low temperature is July (18.2°C).
The coldest month (with the lowest average low temperature) is January (-9.8°C).

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Average pressure in January
Newton, IA

Average pressure in January - Newton, IA
  • Average pressure in January: 1021.1mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in January
Newton, IA

Average wind speed in January - Newton, IA
  • Average wind speed in January: 16.9km/h

The windiest month (with the highest average wind speed) is April (17km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).

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Average humidity in January
Newton, IA

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

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Newton, IA

Average rainfall in January - Newton, IA
  • Average rainfall in January: 10mm

The wettest month (with the highest rainfall) is May (54mm).
The driest months (with the least rainfall) are January, February and December (10mm).

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Average rainfall days in January
Newton, IA

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

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in January
Newton, IA

Average snowfall in January - Newton, IA
  • Average snowfall in January: 44mm

The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in January
Newton, IA

Average snowfall days in January - Newton, IA
  • Average snowfall days in January: 8.4 days

The month with the highest number of snowfall days is January (8.4 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
Newton, IA

Average daylight in January / Average sunshine in January - Newton, IA
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 4.2h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.2h).

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Average sunshine days in January
Newton, IA

Average sunshine days in January - Newton, IA
  • Average sunshine days in January: 21.8 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in January
Newton, IA

Average UV index in January - Newton, IA
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in January
Newton, IA

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

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

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Average visibility in January
Newton, IA

Average visibility in January - Newton, IA
  • Average visibility in January: 9km

The month with the highest visibility is November (10km).
The months with the lowest visibility are July and August (8km).

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