January weather forecast
Calmar, IA

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Weather in January

The cold season starts in Calmar, Iowa at the beginning of the New Year with January typically seeing the very lowest thermometer readings with the high being 22.3°F (-5.4°C) and the low only 9.7°F (-12.4°C). Frequent snowfall can turn the city into a winter wonderland, creating breathtaking scenes. The frosty conditions extend into the night as the temperatures plunge, making for chilly evenings. Even in the daylight, warmth is a scarce commodity while brisk winds add a biting chill to the already frigid conditions. Despite the biting cold, many find beauty in the stark, snowy landscape that the first month of the year presents.

Temperature

With its high average temperature of 22.3°F (-5.4°C) and a low of 9.7°F (-12.4°C), January is regarded as the coldest month in Calmar.

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 89%.

Rainfall

January is the month with the least rainfall in Calmar. Rain falls for 4.5 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

Months with snowfall in Calmar are January through May, October through December. In January, in Calmar, it is snowing for 14.3 days. Throughout January, 5.63" (143mm) of snow is accumulated. In Calmar, Iowa, during the entire year, snow falls for 60.9 days and aggregates up to 24.37" (619mm) of snow.

Daylight

In January, the average length of the day is 9h and 25min.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:42 pm. On the last day of January, in Calmar, sunrise is at 7:24 am and sunset at 5:17 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.5h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 1 during January, leads to the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the coldest time of year in Calmar?

The coldest period in Calmar tends to be January, when average temperatures fluctuate between a high of 22.3°F (-5.4°C) and a low of 9.7°F (-12.4°C).

How cold is January in Calmar?

The high-temperature, in January, in Calmar, records 22.3°F (-5.4°C), while the low-temperature is 9.7°F (-12.4°C).

What is the most humid month in Calmar?

January and February, with an average relative humidity of 89%, are most humid months in Calmar, Iowa.

What is the average humidity in January in Calmar?

The average relative humidity in January is 89%.

What is the driest month in Calmar?

January is the month with the least rainfall in Calmar. Rain falls for 4.5 days and accumulates 1.1" (28mm) of precipitation.

How many days does it rain in January in Calmar?

In Calmar, during January, the rain falls for 4.5 days and regularly aggregates up to 1.1" (28mm) of precipitation.

How much does it snow in Calmar in January?

In January, in Calmar, it is snowing for 14.3 days. Throughout January, 5.63" (143mm) of snow is accumulated.

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

In Calmar, the average day length in January is 9h and 25min.

When are sunrise and sunset in January in Calmar?

On the first day of January, sunrise is at 7:39 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:17 pm CST.

What is the month with the least sunshine in Calmar?

The month with the least sunshine is January, with an average of 3.5h of sunshine.

How long on average sun shines in January in Calmar?

In Calmar, Iowa, the average sunshine duration in January is 3.5h.

When is the lowest UV index in Calmar?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in January in Calmar?

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
28.4°F -2°C
22.3°F -5.4°C
26.1°F -3.3°C
Average low temperature
18.3°F -7.6°C
9.7°F -12.4°C
12.7°F -10.7°C
Average pressure
30.1" 765mmHg
30.13" 765mmHg
30.13" 765mmHg
Average wind speed
9.7mph 15.6km/h
10.2mph 16.4km/h
10.1mph 16.3km/h
Average max. wind speed
10.4mph 16.7km/h
10.8mph 17.4km/h
10.7mph 17.2km/h
Average wind speed gusts
15.7mph 25.3km/h
16.5mph 26.6km/h
16.5mph 26.6km/h
Average humidity
86%
89%
89%
Average rainfall
1.65" 42mm
1.1" 28mm
1.26" 32mm
Average rainfall days
6.4
4.5
4.4
Average snowfall
4.57" 116mm
5.63" 143mm
5.98" 152mm
Average snowfall days
13.1
14.3
12.8
Average daylight
9h 0min
9h 2min
10h 3min
Average sunshine
3h 5min
3h 3min
3h 4min
Average sunshine days
14.5
14
13.3
Average UV index
1
1
1
Average cloud cover
60%
64%
61%
Average visibility
5mi 8km
5mi 8km
5mi 8km

Average temperature in January
Calmar, IA

Average temperature in January - Calmar, IA
  • Average high temperature in January: 22.3°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in January: 9.7°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in January
Calmar, IA

Average pressure in January - Calmar, IA
  • Average pressure in January: 30.13"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in January
Calmar, IA

Average wind speed in January - Calmar, IA
  • Average wind speed in January: 10.2mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in January
Calmar, IA

Average humidity in January - Calmar, IA
  • Average humidity in January: 89%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in January
Calmar, IA

Average rainfall in January - Calmar, IA
  • Average rainfall in January: 1.1"

The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in January
Calmar, IA

Average rainfall days in January - Calmar, IA
  • Average rainfall days in January: 4.5 days

The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in January
Calmar, IA

Average snowfall in January - Calmar, IA
  • Average snowfall in January: 5.63"

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Calmar, IA

Average snowfall days in January - Calmar, IA
  • Average snowfall days in January: 14.3 days

The month with the highest number of snowfall days is January (14.3 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
Calmar, IA

Average daylight in January / Average sunshine in January - Calmar, IA
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 3h and 3min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in January
Calmar, IA

Average sunshine days in January - Calmar, IA
  • Average sunshine days in January: 14 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in January
Calmar, IA

Average UV index in January - Calmar, 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, February, November and December (UV index 1).

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Average cloud cover in January
Calmar, IA

Average cloud cover in January - Calmar, IA
  • Average cloud cover in January: 64

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Calmar, IA

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

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

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Calmar, Iowa, USA

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