January weather forecast
Illmo, MO

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Weather in January

January, like December, in Illmo, Missouri, is an icy winter month, with an average temperature fluctuating between 41°F (5°C) and 27.9°F (-2.3°C).

Temperature

Illmo's January weather reaches an average high of 41°F (5°C) and an average low of 27.9°F (-2.3°C), making it the coldest month.

Humidity

In January, the average relative humidity in Illmo, Missouri, is 75%.

Rainfall

In Illmo, during January, the rain falls for 9.8 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Illmo, during the entire year, the rain falls for 158.6 days and collects up to 35.59" (904mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In January, in Illmo, it is snowing for 3.7 days. Throughout January, 0.79" (20mm) of snow is accumulated. In Illmo, during the entire year, snow falls for 11.2 days and aggregates up to 4.92" (125mm) of snow.

Daylight

The average length of the day in January is 9h and 57min.
On the first day of January, sunrise is at 7:11 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 5:21 pm CST.

Sunshine

The average sunshine in January is 4.9h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Illmo. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 2 in January transforms into this advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What time of the year is the coldest in Illmo?

January, characterized by an average high temperature of 41°F (5°C) and a low temperature of 27.9°F (-2.3°C), is generally the coldest month.

How cold does it get in Illmo in January?

In January, in Illmo, the average high-temperature is 41°F (5°C), and the average low-temperature is 27.9°F (-2.3°C).

What is the average humidity in January in Illmo?

The average relative humidity in January is 75%.

How many days does it rain in January in Illmo?

In Illmo, during January, the rain falls for 9.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.

How much does it snow in Illmo in January?

In Illmo, Missouri, during January, snow falls for 3.7 days and regularly aggregates up to 0.79" (20mm) of snow.

How many hours of daylight does Illmo have in January?

In Illmo, the average day length in January is 9h and 57min.

When are sunrise and sunset in January in Illmo?

In January, on the first day of the month, sunrise is at 7:11 am and sunset at 4:51 pm. On the last day of the month, in Illmo, sunrise is at 7:01 am and sunset at 5:21 pm CST.

How many hours of sunshine does Illmo have in January?

In Illmo, the average sunshine duration in January is 4.9h.

When is the lowest UV index in Illmo?

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

What is the UV index reading in January in Illmo?

In January, the average daily maximum UV index in Illmo, Missouri, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
Illmo, MO

Average temperature in January - Illmo, MO
  • Average high temperature in January: 41°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in January: 27.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

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Average pressure in January
Illmo, MO

Average pressure in January - Illmo, MO
  • 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 (29.94"Hg).

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Average wind speed in January
Illmo, MO

Average wind speed in January - Illmo, MO
  • Average wind speed in January: 9.1mph

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in January
Illmo, MO

Average humidity in January - Illmo, MO
  • Average humidity in January: 75%

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in January
Illmo, MO

Average rainfall in January - Illmo, MO
  • Average rainfall in January: 2.32"

The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in January
Illmo, MO

Average rainfall days in January - Illmo, MO
  • Average rainfall days in January: 9.8 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in January
Illmo, MO

Average snowfall in January - Illmo, MO
  • Average snowfall in January: 0.79"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Illmo, MO

Average snowfall days in January - Illmo, MO
  • Average snowfall days in January: 3.7 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Illmo, MO

Average daylight in January / Average sunshine in January - Illmo, MO
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in January
Illmo, MO

Average sunshine days in January - Illmo, MO
  • Average sunshine days in January: 17.8 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).

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Average UV index in January
Illmo, MO

Average UV index in January - Illmo, MO
  • Average UV index in January: 2

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

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Average cloud cover in January
Illmo, MO

Average cloud cover in January - Illmo, MO
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).

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Average visibility in January
Illmo, MO

Average visibility in January - Illmo, MO
  • 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).

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Illmo, Missouri, USA

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