January weather forecast
Peosta, IA

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Weather in January

January, the same as December, in Peosta, Iowa, is a freezing cold winter month, with an average temperature varying between 12.4°F (-10.9°C) and 24.6°F (-4.1°C).

Temperature

January, with its average high-temperature of 24.6°F (-4.1°C) and an average low-temperature of 12.4°F (-10.9°C), holds the record as the coldest month.

Humidity

With an average relative humidity of 87%, January is the most humid month.

Rainfall

January is the month with the least rainfall. Rain falls for 4.6 days and accumulates 1.18" (30mm) 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 13.3 days and typically aggregates up to 5.08" (129mm) of snow.

Daylight

In Peosta, the average length of the day in January is 9h and 29min.
On the first day of January, sunrise is at 7:32 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:15 pm CST.

Sunshine

With an average of 3.7h of sunshine, January has the least sunshine of the year.

UV index

The 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 minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

What time of the year is the coldest?

Temperature records mark January as the coldest month, with highs averaging 24.6°F (-4.1°C) and lows at 12.4°F (-10.9°C).

How cold is it in January?

During January, Peosta experiences an average high-temperature of 24.6°F (-4.1°C) and a low-temperature of 12.4°F (-10.9°C).

What is the most humid month?

With an average relative humidity of 87%, January is the most humid month.

What is the average humidity in January?

In January, the average relative humidity is 87%.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 4.6 days and typically collects 1.18" (30mm) of precipitation.

How many days does it rain in January?

In January, the rain falls for 4.6 days. Throughout January, 1.18" (30mm) of precipitation is accumulated.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 13.3 days and typically aggregates up to 5.08" (129mm) of snow.

How many days does it snow in January?

In Peosta, during January, snow falls for 13.3 days and regularly aggregates up to 5.08" (129mm) of snow.

What is the average length of the day in January?

In January, the average day length is 9h and 29min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:32 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:15 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

How many hours of sunshine does Peosta have in January?

In January, the average sunshine duration is 3.7h.

What is the month with the lowest UV index?

The months with the lowest UV index are January and December, 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 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
Peosta, IA

Average temperature in January - Peosta, IA
  • Average high temperature in January: 24.6°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.6°F).

  • Average low temperature in January: 12.4°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in January
Peosta, IA

Average pressure in January - Peosta, IA
  • Average pressure in January: 30.13"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).

Average wind speed in January
Peosta, IA

Average wind speed in January - Peosta, IA
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in January
Peosta, IA

Average humidity in January - Peosta, IA
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).

Average rainfall in January
Peosta, IA

Average rainfall in January - Peosta, IA
  • Average rainfall in January: 1.18"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in January
Peosta, IA

Average rainfall days in January - Peosta, IA
  • Average rainfall days in January: 4.6 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (4.6 days).

Average snowfall in January
Peosta, IA

Average snowfall in January - Peosta, IA
  • Average snowfall in January: 5.08"

The month with the highest snowfall is January (5.08").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Peosta, IA

Average snowfall days in January - Peosta, IA
  • Average snowfall days in January: 13.3 days

The month with the highest number of snowfall days is January (13.3 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
Peosta, IA

Average daylight in January / Average sunshine in January - Peosta, IA
  • Average daylight in January: 9h and 3min

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 January: 3h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Peosta, IA

Average sunshine days in January - Peosta, IA
  • Average sunshine days in January: 15.4 days

The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in January
Peosta, IA

Average UV index in January - Peosta, IA
  • Average UV index in January: 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 and December (UV index 1).

Average cloud cover in January
Peosta, IA

Average cloud cover in January - Peosta, IA
  • Average cloud cover in January: 61

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in January
Peosta, IA

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

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).

Peosta, Iowa, USA

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