January weather forecast
Cass, IA

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Weather in January

January, like December, is another subzero cold winter month in Cass, Iowa, with an average temperature varying between 25.5°F (-3.6°C) and 13.5°F (-10.3°C).

Temperature

Cass witnesses the coldest weather in January, with temperatures averaging a high of 25.5°F (-3.6°C) and a low of 13.5°F (-10.3°C).

Humidity

January is the most humid month in Cass, with an average relative humidity of 86%.

Rainfall

In Cass, during January, the rain falls for 4.1 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Cass, during the entire year, the rain falls for 137.5 days and collects up to 27.68" (703mm) of precipitation.

Snowfall

Months with snowfall in Cass are January through April, October through December. January is the month with the most snowfall in Cass. Snow falls for 11.3 days and accumulates 5.16" (131mm) of snow.

Daylight

In Cass, the average length of the day in January is 9h and 31min.
On the first day of January, sunrise is at 7:33 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:17 pm CST.

Sunshine

With an average of 3.8h of sunshine, January has the least sunshine of the year in Cass.

UV index

The average daily maximum UV index in January in Cass is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during January translates into the following guidance:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What is the coldest time of year in Cass?

In Cass, January is the month with the lowest recorded average temperatures, measuring a high of 25.5°F (-3.6°C) and a low of 13.5°F (-10.3°C).

How cold is January in Cass?

The average high-temperature, in January, in Cass, is 25.5°F (-3.6°C), while the average low-temperature is 13.5°F (-10.3°C).

What is the most humid month in Cass?

With an average relative humidity of 86%, January is the most humid month.

What is the average humidity in January in Cass?

In Cass, Iowa, the average relative humidity in January is 86%.

How much does it rain in Cass in January?

In Cass, in January, during 4.1 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

What is the snowiest month in Cass?

The month with the most snowfall in Cass, Iowa, is January, when snow falls for 11.3 days and typically aggregates up to 5.16" (131mm) of snow.

How many days does it snow in January in Cass?

In Cass, in January, during 11.3 snowfall days, 5.16" (131mm) of snow is typically accumulated.

What is the average length of the day in January in Cass?

In Cass, the average day length in January is 9h and 31min.

What time are sunrise and sunset in January in Cass?

In January, on the first day of the month, sunrise is at 7:33 am and sunset at 4:43 pm. On the last day of the month, in Cass, Iowa, sunrise is at 7:19 am and sunset at 5:17 pm CST.

What is the month with the least sunshine in Cass?

January has the least sunshine of the year, with an average of 3.8h of sunshine.

How long on average sun shines in January in Cass?

The average sunshine duration in January in Cass is 3.8h.

How high is the UV index in January in Cass?

In Cass, Iowa, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Cass, IA

Average temperature in January - Cass, IA
  • Average high temperature in January: 25.5°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in January: 13.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in January
Cass, IA

Average pressure in January - Cass, 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).

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Average wind speed in January
Cass, IA

Average wind speed in January - Cass, IA
  • Average wind speed in January: 10.5mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in January
Cass, IA

Average humidity in January - Cass, IA
  • Average humidity in January: 86%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in January
Cass, IA

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

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in January
Cass, IA

Average rainfall days in January - Cass, IA
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in January
Cass, IA

Average snowfall in January - Cass, IA
  • Average snowfall in January: 5.16"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Cass, IA

Average snowfall days in January - Cass, IA
  • Average snowfall days in January: 11.3 days

The month with the highest number of snowfall days is January (11.3 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
Cass, IA

Average daylight in January / Average sunshine in January - Cass, 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 12min).

  • Average sunshine in January: 3h and 5min

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 48min).

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Average sunshine days in January
Cass, IA

Average sunshine days in January - Cass, IA
  • Average sunshine days in January: 16.5 days

The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in January
Cass, IA

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Cass, IA

Average cloud cover in January - Cass, IA
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in January
Cass, IA

Average visibility in January - Cass, 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).

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Cass, Iowa, USA

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