January weather forecast
Oskaloosa, IA

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Weather in January

In Oskaloosa, Iowa, the year starts with January registering lower temperatures, setting the stage for cold weather. The city experiences chilly winds with an average of 10.6mph (17.1km/h). The coldest period of the year, it witnesses the lowest average temperature of 15.3°F (-9.3°C). Despite the lower temperatures, January also has the highest snowfall with 4.13" (105mm), adding a layer of white to the serene landscapes and city streets. The beginning of the year sees more indoor activities due to the cold weather.

Temperature

In Oskaloosa, January records the lowest average temperatures, peaking at 28.6°F (-1.9°C) and reaching a low of 15.3°F (-9.3°C).

Humidity

The average relative humidity in January in Oskaloosa, Iowa, is 82%.

Rainfall

The month with the least rainfall in Oskaloosa is January, when the rain falls for 5.3 days and typically collects 1.06" (27mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Oskaloosa, in January, during 8.8 snowfall days, 4.13" (105mm) of snow is typically accumulated. In Oskaloosa, during the entire year, snow falls for 32.1 days and aggregates up to 15.28" (388mm) of snow.

Daylight

In January, the average length of the day is 9h and 36min.
On the first day of the month, sunrise is at 7:36 am and sunset at 4:51 pm. On the last day of January, in Oskaloosa, sunrise is at 7:22 am and sunset at 5:25 pm CST.

Sunshine

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

UV index

January is the month with the lowest UV index in Oskaloosa, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In January, the maximum UV index of 1 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Oskaloosa?

Oskaloosa's coldest weather arrives in January, when temperatures average a high of 28.6°F (-1.9°C) and a low of 15.3°F (-9.3°C).

How cold is it in Oskaloosa in January?

In Oskaloosa, 28.6°F (-1.9°C) is the average high-temperature and 15.3°F (-9.3°C) is the average low-temperature during January.

What is the average humidity in January in Oskaloosa?

The average relative humidity in January in Oskaloosa, Iowa, is 82%.

What is the driest month in Oskaloosa?

January is the month with the least rainfall. Rain falls for 5.3 days and accumulates 1.06" (27mm) of precipitation.

How many days does it rain in January in Oskaloosa?

In Oskaloosa, in January, it is raining for 5.3 days, with typically 1.06" (27mm) of accumulated precipitation.

How much does it snow in Oskaloosa in January?

In Oskaloosa, in January, during 8.8 snowfall days, 4.13" (105mm) of snow is typically accumulated.

How many hours of daylight does Oskaloosa have in January?

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

When are sunrise and sunset in January in Oskaloosa?

In January, on the first day of the month, sunrise is at 7:36 am and sunset at 4:51 pm. On the last day of the month, in Oskaloosa, sunrise is at 7:22 am and sunset at 5:25 pm CST.

What is the month with the least sunshine in Oskaloosa?

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

How many hours of sunshine does Oskaloosa have in January?

In January, the average sunshine duration is 4.2h.

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

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

How high is the UV index in January in Oskaloosa?

The average daily maximum UV index in January in Oskaloosa, Iowa, is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Oskaloosa, IA

Average temperature in January - Oskaloosa, IA
  • Average high temperature in January: 28.6°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in January: 15.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in January
Oskaloosa, IA

Average pressure in January - Oskaloosa, IA
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in January
Oskaloosa, IA

Average wind speed in January - Oskaloosa, IA
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

Average humidity in January
Oskaloosa, IA

Average humidity in January - Oskaloosa, IA
  • Average humidity in January: 82%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
Oskaloosa, IA

Average rainfall in January - Oskaloosa, IA
  • Average rainfall in January: 1.06"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in January
Oskaloosa, IA

Average rainfall days in January - Oskaloosa, IA
  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in January
Oskaloosa, IA

Average snowfall in January - Oskaloosa, IA
  • Average snowfall in January: 4.13"

The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Oskaloosa, IA

Average snowfall days in January - Oskaloosa, IA
  • Average snowfall days in January: 8.8 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Oskaloosa, 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 18min).

  • 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).

Average sunshine days in January
Oskaloosa, IA

Average sunshine days in January - Oskaloosa, IA
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9 days).

Average UV index in January
Oskaloosa, IA

Average UV index in January - Oskaloosa, 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
Oskaloosa, IA

Average cloud cover in January - Oskaloosa, IA
  • Average cloud cover in January: 54

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).

Average visibility in January
Oskaloosa, IA

Average visibility in January - Oskaloosa, 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).

Oskaloosa, Iowa, USA

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