January weather forecastMystic, IA

January

Weather in January

January, like December, is another subzero cold winter month in Mystic, Iowa, with an average temperature ranging between min 16.5°F (-8.6°C) and max 30.6°F (-0.8°C).

Temperature

Mystic's coldest temperatures are experienced in January, with average high temperatures of 30.6°F (-0.8°C) and lows of 16.5°F (-8.6°C).

Humidity

In Mystic, the average relative humidity in January is 81%.

Rainfall

The month with the least rainfall is January, when the rain falls for 5 days and typically collects 1.02" (26mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 9.4 days and typically aggregates up to 4.33" (110mm) of snow.

Daylight

The average length of the day in January is 9h and 39min.
On the first day of the month, sunrise is at 7:35 am and sunset at 4:54 pm. On the last day of January, sunrise is at 7:22 am and sunset at 5:27 pm CST.

Sunshine

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

UV index

January is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 1 during January, leads to the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January, with average temperatures reaching a high of 30.6°F (-0.8°C) and a low of 16.5°F (-8.6°C), is the coldest month.

In Mystic, 30.6°F (-0.8°C) is the average high-temperature and 16.5°F (-8.6°C) is the average low-temperature during January.

The average relative humidity in January in Mystic is 81%.

The month with the least rainfall is January, when the rain falls for 5 days and typically collects 1.02" (26mm) of precipitation.

In Mystic, in January, during 5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

January is the month with the most snowfall. Snow falls for 9.4 days and accumulates 4.33" (110mm) of snow.

In Mystic, in January, snow falls for 9.4 days, with typically accumulated 4.33" (110mm) of snow.

The average day length in January is 9h and 39min.

In January, on the first day of the month, sunrise is at 7:35 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:27 pm CST.

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

In January, the average sunshine duration is 4.3h.

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

The average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mystic, IA

  • Average high temperature in January: 30.6°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in January: 16.5°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in January
Mystic, 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 (29.89"Hg).

Average wind speed in January
Mystic, IA

  • Average wind speed in January: 10.6mph

The windiest months (with the highest average wind speed) are January, February and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in January
Mystic, IA

  • Average humidity in January: 81%

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

Average rainfall in January
Mystic, IA

  • Average rainfall in January: 1.02"

The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in January
Mystic, IA

  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).

Average snowfall in January
Mystic, IA

  • Average snowfall in January: 4.33"

The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Mystic, IA

  • Average snowfall days in January: 9.4 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in January: 9h and 36min

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 18min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in January
Mystic, IA

  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.8 days).

Average UV index in January
Mystic, 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
Mystic, IA

  • Average cloud cover in January: 53

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).

Average visibility in January
Mystic, IA

  • Average visibility in January: 6mi

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