January weather forecast
Mason City, IL

Weather in January

January, like December, in Mason City, Illinois, is a wintry winter month, with an average temperature ranging between min 19.9°F (-6.7°C) and max 32°F (0°C).

Temperature

The coldest month is January, with an average high-temperature of 32°F (0°C) and an average low-temperature of 19.9°F (-6.7°C).

Humidity

The average relative humidity in January in Mason City is 80%.

Rainfall

In Mason City, during January, the rain falls for 7 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Mason City, there are 150 rainfall days, and 29.84" (758mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 10.7 days and typically aggregates up to 3.98" (101mm) of snow.

Daylight

In January, the average length of the day in Mason City is 9h and 42min.
On the first day of January, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:16 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.1h of sunshine.

UV index

The months with the lowest UV index in Mason City are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in January transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Mason City?

January is the coldest month in Mason City, with an average high-temperature of 32°F (0°C) and an average low-temperature of 19.9°F (-6.7°C).

What is the temperature in January in Mason City?

In January, the average high-temperature is 32°F (0°C), and the average low-temperature is 19.9°F (-6.7°C).

What is the average humidity in January in Mason City?

In January, the average relative humidity is 80%.

How much does it rain in Mason City in January?

In Mason City, Illinois, in January, during 7 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

What is the snowiest month in Mason City?

The month with the most snowfall in Mason City, Illinois, is January, when snow falls for 10.7 days and typically aggregates up to 3.98" (101mm) of snow.

How many days does it snow in January in Mason City?

In Mason City, during January, snow falls for 10.7 days and regularly aggregates up to 3.98" (101mm) of snow.

How many hours of daylight does Mason City have in January?

In January, the average day length in Mason City, Illinois, is 9h and 42min.

What time are sunrise and sunset in January in Mason City?

On the first day of January, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:16 pm CST.

What is the month with the least sunshine in Mason City?

With an average of 4.1h of sunshine, January has the least sunshine of the year in Mason City.

How long on average sun shines in January in Mason City?

In January, the average sunshine duration in Mason City, Illinois, is 4.1h.

What is the month with the lowest UV index in Mason City?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in January in Mason City?

In Mason City, Illinois, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mason City, IL

Average temperature in January - Mason City, IL
  • Average high temperature in January: 32°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32°F).

  • Average low temperature in January: 19.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

[Resources]

Average pressure in January
Mason City, IL

Average pressure in January - Mason City, IL
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in January
Mason City, IL

Average wind speed in January - Mason City, IL
  • Average wind speed in January: 10.3mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

[Resources]

Average humidity in January
Mason City, IL

Average humidity in January - Mason City, IL
  • Average humidity in January: 80%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

[Resources]

Average rainfall in January
Mason City, IL

Average rainfall in January - Mason City, IL
  • Average rainfall in January: 1.77"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is December (1.46").

[Resources]

Average rainfall days in January
Mason City, IL

Average rainfall days in January - Mason City, IL
  • Average rainfall days in January: 7 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (6.2 days).

[Resources]

Average snowfall in January
Mason City, IL

Average snowfall in January - Mason City, IL
  • Average snowfall in January: 3.98"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in January
Mason City, IL

Average snowfall days in January - Mason City, IL
  • Average snowfall days in January: 10.7 days

The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in January /
Average sunshine in January
Mason City, IL

Average daylight in January / Average sunshine in January - Mason City, IL
  • Average daylight in January: 9h and 42min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in January: 4h and 6min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

[Resources]

Average sunshine days in January
Mason City, IL

Average sunshine days in January - Mason City, IL
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.5 days).

[Resources]

Average UV index in January
Mason City, IL

Average UV index in January - Mason City, IL
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in January
Mason City, IL

Average cloud cover in January - Mason City, IL
  • Average cloud cover in January: 55

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

[Resources]

Average visibility in January
Mason City, IL

Average visibility in January - Mason City, IL
  • Average visibility in January: 6mi

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location