January weather forecast
Lake Saint Louis, MO

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Weather in January

January, the same as December, is another cold winter month in Lake Saint Louis, Missouri, with temperature in the range of an average low of 23.5°F (-4.7°C) and an average high of 37.4°F (3°C).

Temperature

In Lake Saint Louis, the lowest average temperatures are observed in January, with a high of 37.4°F (3°C) and a low of 23.5°F (-4.7°C).

Humidity

In Lake Saint Louis, the average relative humidity in January is 76%.

Rainfall

In Lake Saint Louis, in January, it is raining for 7.8 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, in Lake Saint Louis, there are 152.1 rainfall days, and 32.01" (813mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In January, in Lake Saint Louis, it is snowing for 7.3 days. Throughout January, 2.52" (64mm) of snow is accumulated. Throughout the year, there are 21.4 snowfall days, and 8.62" (219mm) of snow is accumulated.

Daylight

In Lake Saint Louis, the average length of the day in January is 9h and 49min.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:23 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 4.7h of sunshine.

UV index

The months with the lowest UV index in Lake Saint Louis are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in January transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Lake Saint Louis?

In Lake Saint Louis, the average lowest temperatures are observed in January, with a high of 37.4°F (3°C) and a low of 23.5°F (-4.7°C).

How cold is January in Lake Saint Louis?

January temperatures in Lake Saint Louis vary between a high-temperature of 37.4°F (3°C) and a low-temperature of 23.5°F (-4.7°C).

What is the average humidity in January in Lake Saint Louis?

The average relative humidity in January in Lake Saint Louis, Missouri, is 76%.

How many days does it rain in January in Lake Saint Louis?

In January, the rain falls for 7.8 days. Throughout January, 1.81" (46mm) of precipitation is accumulated.

How many days does it snow in January in Lake Saint Louis?

In January, in Lake Saint Louis, Missouri, it is snowing for 7.3 days. Throughout January, 2.52" (64mm) of snow is accumulated.

How many hours of daylight does Lake Saint Louis have in January?

The average day length in January in Lake Saint Louis is 9h and 49min.

When is the sunrise / sunset in January in Lake Saint Louis?

In January, on the first day of the month, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, in Lake Saint Louis, Missouri, sunrise is at 7:10 am and sunset at 5:23 pm CST.

What is the month with the least sunshine in Lake Saint Louis?

January has the least sunshine of the year in Lake Saint Louis, with an average of 4.7h of sunshine.

How many hours of sunshine does Lake Saint Louis have in January?

In Lake Saint Louis, the average sunshine duration in January is 4.7h.

When is the lowest UV index in Lake Saint Louis?

The months with the lowest UV index in Lake Saint Louis, Missouri, are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Lake Saint Louis?

In Lake Saint Louis, Missouri, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
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
Lake Saint Louis, MO

Average temperature in January - Lake Saint Louis, MO
  • Average high temperature in January: 37.4°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in January: 23.5°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

Average pressure in January
Lake Saint Louis, MO

Average pressure in January - Lake Saint Louis, 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 (29.92"Hg).

Average wind speed in January
Lake Saint Louis, MO

Average wind speed in January - Lake Saint Louis, MO
  • Average wind speed in January: 8.9mph

The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in January
Lake Saint Louis, MO

Average humidity in January - Lake Saint Louis, MO
  • Average humidity in January: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in January
Lake Saint Louis, MO

Average rainfall in January - Lake Saint Louis, MO
  • Average rainfall in January: 1.81"

The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is February (1.77").

Average rainfall days in January
Lake Saint Louis, MO

Average rainfall days in January - Lake Saint Louis, MO
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in January
Lake Saint Louis, MO

Average snowfall in January - Lake Saint Louis, MO
  • Average snowfall in January: 2.52"

The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Lake Saint Louis, MO

Average snowfall days in January - Lake Saint Louis, MO
  • Average snowfall days in January: 7.3 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Lake Saint Louis, MO

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 4h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in January
Lake Saint Louis, MO

Average sunshine days in January - Lake Saint Louis, MO
  • Average sunshine days in January: 17 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is June (10.9 days).

Average UV index in January
Lake Saint Louis, MO

Average UV index in January - Lake Saint Louis, 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, November and December (UV index 2).

Average cloud cover in January
Lake Saint Louis, MO

Average cloud cover in January - Lake Saint Louis, MO
  • Average cloud cover in January: 50

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January
Lake Saint Louis, MO

Average visibility in January - Lake Saint Louis, 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).

Lake Saint Louis, Missouri, USA

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