January weather forecast
West Chester, IA

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Weather in January

January, the same as December, in West Chester, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 16.5°F (-8.6°C) and 28.8°F (-1.8°C).

Temperature

January, with an average high of 28.8°F (-1.8°C) and a low of 16.5°F (-8.6°C), signifies the coldest month of the year.

Humidity

The months with the highest humidity are January and July, with an average relative humidity of 83%.

Rainfall

In West Chester, Iowa, in January, it is raining for 4.4 days, with typically 0.79" (20mm) of accumulated precipitation. In West Chester, Iowa, during the entire year, the rain falls for 123.7 days and collects up to 18.94" (481mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 8.9 days and typically aggregates up to 2.52" (64mm) of snow.

Daylight

In West Chester, the average length of the day in January is 9h and 36min.
On the first day of January, sunrise is at 7:33 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:21 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.2h of sunshine.

UV index

January is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, an average UV index of 1 transforms into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January, noted for its average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 16.5°F (-8.6°C), is considered the coldest month.

How cold is January?

In West Chester, 28.8°F (-1.8°C) is the average high-temperature and 16.5°F (-8.6°C) is the average low-temperature during January.

What is the most humid month?

The months with the highest humidity are January and July, with an average relative humidity of 83%.

What is the average humidity in January?

In West Chester, the average relative humidity in January is 83%.

How much does it rain in January?

In West Chester, in January, during 4.4 rainfall days, 0.79" (20mm) of precipitation is typically accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 8.9 days and accumulates 2.52" (64mm) of snow.

How many days does it snow in January?

In West Chester, in January, during 8.9 snowfall days, 2.52" (64mm) of snow is typically accumulated.

How many hours of daylight does West Chester have in January?

The average day length in January is 9h and 36min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:33 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:21 pm CST.

What is the month with the least sunshine?

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

How long on average sun shines in January?

In January, the average sunshine duration is 4.2h.

What is the month with the lowest UV index?

January is the month with the lowest UV index, with an average maximum UV index of 1.

What is the UV index reading in January?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
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
West Chester, IA

Average temperature in January - West Chester, IA
  • Average high temperature in January: 28.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in January: 16.5°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in January
West Chester, IA

Average pressure in January - West Chester, IA
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
West Chester, IA

Average wind speed in January - West Chester, IA
  • Average wind speed in January: 10.7mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in January
West Chester, IA

Average humidity in January - West Chester, IA
  • Average humidity in January: 83%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
West Chester, IA

Average rainfall in January - West Chester, IA
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in January
West Chester, IA

Average rainfall days in January - West Chester, IA
  • Average rainfall days in January: 4.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in January
West Chester, IA

Average snowfall in January - West Chester, IA
  • Average snowfall in January: 2.52"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
West Chester, IA

Average snowfall days in January - West Chester, IA
  • Average snowfall days in January: 8.9 days

The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
West Chester, IA

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

The month with the longest days is June (Average daylight: 15h and 6min).
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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in January
West Chester, IA

Average sunshine days in January - West Chester, IA
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in January
West Chester, IA

Average UV index in January - West Chester, IA
  • Average UV index in January: 1

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

Average cloud cover in January
West Chester, IA

Average cloud cover in January - West Chester, 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 August and September (Cloud cover 29).

Average visibility in January
West Chester, IA

Average visibility in January - West Chester, IA
  • Average visibility in January: 6mi

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

West Chester, Iowa, USA

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