January weather forecast
Casey, IA

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Weather in January

January, like December, is another subzero cold winter month in Casey, Iowa, with an average temperature varying between 28°F (-2.2°C) and 14.5°F (-9.7°C).

Temperature

With average high and low temperatures of 28°F (-2.2°C) and 14.5°F (-9.7°C) respectively, January is Casey's coldest month.

Humidity

The months with the highest humidity in Casey, Iowa, are January and February, with an average relative humidity of 82%.

Rainfall

January is the month with the least rainfall in Casey. Rain falls for 3.3 days and accumulates 0.55" (14mm) of precipitation.

Snowfall

Months with snowfall in Casey are January through May, October through December. In January, in Casey, it is snowing for 8.8 days. Throughout January, 2.32" (59mm) of snow is accumulated. Throughout the year, in Casey, there are 31.7 snowfall days, and 9.29" (236mm) of snow is accumulated.

Daylight

In Casey, the average length of the day in January is 9h and 35min.
On the first day of the month, sunrise is at 7:44 am and sunset at 4:58 pm. On the last day of January, sunrise is at 7:30 am and sunset at 5:32 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4.3h of sunshine.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 1 during January morphs into the following directions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What time of the year is the coldest in Casey?

January is Casey's coldest month, registering average high temperatures of 28°F (-2.2°C) and lows of 14.5°F (-9.7°C).

How cold is it in Casey in January?

In Casey, 28°F (-2.2°C) is the average high-temperature and 14.5°F (-9.7°C) is the average low-temperature during January.

What are the most humid months in Casey?

The months with the highest humidity in Casey, Iowa, are January and February, with an average relative humidity of 82%.

What is the average humidity in January in Casey?

In Casey, the average relative humidity in January is 82%.

What is the driest month in Casey?

The month with the least rainfall in Casey is January, when the rain falls for 3.3 days and typically collects 0.55" (14mm) of precipitation.

How many days does it rain in January in Casey?

In Casey, Iowa, in January, during 3.3 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How many days does it snow in January in Casey?

In January, it is snowing for 8.8 days. Throughout January, 2.32" (59mm) of snow is accumulated.

How many hours of daylight does Casey have in January?

The average day length in January in Casey, Iowa, is 9h and 35min.

When is the sunrise / sunset in January in Casey?

On the first day of January, sunrise is at 7:44 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:32 pm CST.

What is the month with the least sunshine in Casey?

The month with the least sunshine in Casey, Iowa, is January, with an average of 4.3h of sunshine.

How many hours of sunshine does Casey have in January?

The average sunshine duration in January in Casey, Iowa, is 4.3h.

When is the lowest UV index in Casey?

The months with the lowest UV index in Casey are January and December, with an average maximum UV index of 1.

What is the UV index intensity in January in Casey?

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
33.3°F 0.7°C
28°F -2.2°C
32°F 0°C
Average low temperature
21.7°F -5.7°C
14.5°F -9.7°C
17.8°F -7.9°C
Average pressure
30.12" 765mmHg
30.16" 766mmHg
30.14" 766mmHg
Average wind speed
10.3mph 16.6km/h
10.6mph 17.1km/h
10.6mph 17.1km/h
Average max. wind speed
11mph 17.7km/h
11.4mph 18.3km/h
11.2mph 18km/h
Average wind speed gusts
16.3mph 26.2km/h
17.2mph 27.7km/h
16.8mph 27km/h
Average humidity
79%
82%
82%
Average rainfall
0.67" 17mm
0.55" 14mm
0.63" 16mm
Average rainfall days
4.1
3.3
2.9
Average snowfall
1.3" 33mm
2.32" 59mm
2.76" 70mm
Average snowfall days
6
8.8
7.8
Average daylight
9h 1min
9h 4min
10h 4min
Average sunshine
4h 5min
4h 2min
5h 0min
Average sunshine days
22
19.9
18
Average UV index
1
1
2
Average cloud cover
49%
54%
50%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Casey, IA

Average temperature in January - Casey, IA
  • Average high temperature in January: 28°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°F).

  • Average low temperature in January: 14.5°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 (14.5°F).

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Average pressure in January
Casey, IA

Average pressure in January - Casey, IA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in January
Casey, IA

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

The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in January
Casey, IA

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

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in January
Casey, IA

Average rainfall in January - Casey, IA
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in January
Casey, IA

Average rainfall days in January - Casey, IA
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (2.9 days).

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Average snowfall in January
Casey, IA

Average snowfall in January - Casey, IA
  • Average snowfall in January: 2.32"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Casey, IA

Average snowfall days in January - Casey, 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).

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

Average daylight in January / Average sunshine in January - Casey, 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 2min

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 18min).

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Average sunshine days in January
Casey, IA

Average sunshine days in January - Casey, IA
  • Average sunshine days in January: 19.9 days

The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (12.1 days).

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Average UV index in January
Casey, IA

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

The months with the highest UV index are June, July and August (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
Casey, IA

Average cloud cover in January - Casey, 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 July and September (Cloud cover 30).

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Average visibility in January
Casey, IA

Average visibility in January - Casey, IA
  • Average visibility in January: 6mi

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

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Casey, Iowa, USA

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