January weather forecast
Saint Peters, MO

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Weather in January

January showcases the cool, crisp specifics of Saint Peters, Missouri in the heart of winter. It can be described that this beginning month provides cooler temperatures, abundant cloud coverage coupled with reduced sunlight. Snowfall of 0.98" (25mm) typically accompanies the arrival of the new year. Typical weather conditions include a blend of snowy days and rainfall, hinting at the significant amounts of precipitation this month. As January transitions into February, weather patterns exhibit subtle warming signs.

Temperature

January tends to be the coldest month, with temperatures averaging a daily high of 37.4°F (3°C) and a low of 23.9°F (-4.5°C).

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Saint Peters, in January, during 7.2 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, in Saint Peters, there are 133.4 rainfall days, and 20.98" (533mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Saint Peters, Missouri. In Saint Peters, in January, during 5.8 snowfall days, 0.98" (25mm) of snow is typically accumulated. Throughout the year, there are 19.4 snowfall days, and 4.92" (125mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 49min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:51 pm. On the last day of January, in Saint Peters, sunrise is at 7:09 am and sunset at 5:22 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4.7h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in January transforms into this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What part of the year is the coldest in Saint Peters?

In Saint Peters, January registers the lowest temperatures, averaging 37.4°F (3°C) at the peak and 23.9°F (-4.5°C) at the lowest.

How cold is January in Saint Peters?

January temperatures in Saint Peters, Missouri, vary between a high-temperature of 37.4°F (3°C) and a low-temperature of 23.9°F (-4.5°C).

What is the average humidity in January in Saint Peters?

In January, the average relative humidity in Saint Peters is 75%.

How much does it rain in Saint Peters in January?

In Saint Peters, in January, it is raining for 7.2 days, with typically 1.14" (29mm) of accumulated precipitation.

How much does it snow in Saint Peters in January?

In Saint Peters, in January, during 5.8 snowfall days, 0.98" (25mm) of snow is typically accumulated.

How many hours of daylight does Saint Peters have in January?

In January, the average day length is 9h and 49min.

When is the sunrise / sunset in January in Saint Peters?

On the first day of January in Saint Peters, sunrise is at 7:20 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:22 pm CST.

What is the month with the least sunshine in Saint Peters?

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

How many hours of sunshine does Saint Peters have in January?

The average sunshine duration in January in Saint Peters, Missouri, is 4.7h.

What is the month with the lowest UV index in Saint Peters?

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

What is the UV index reading in January in Saint Peters?

The average daily maximum UV index in January in Saint Peters, Missouri, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Saint Peters, MO

Average temperature in January - Saint Peters, 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: 23.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in January
Saint Peters, MO

Average pressure in January - Saint Peters, 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).

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Average wind speed in January
Saint Peters, MO

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

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

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Average humidity in January
Saint Peters, MO

Average humidity in January - Saint Peters, MO
  • Average humidity in January: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Saint Peters, MO

Average rainfall in January - Saint Peters, MO
  • Average rainfall in January: 1.14"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is February (1.06").

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Average rainfall days in January
Saint Peters, MO

Average rainfall days in January - Saint Peters, MO
  • Average rainfall days in January: 7.2 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall in January
Saint Peters, MO

Average snowfall in January - Saint Peters, MO
  • Average snowfall in January: 0.98"

The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Saint Peters, MO

Average snowfall days in January - Saint Peters, MO
  • Average snowfall days in January: 5.8 days

The months with the highest number of snowfall days are January and February (5.8 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
Saint Peters, MO

Average daylight in January / Average sunshine in January - Saint Peters, 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).

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Average sunshine days in January
Saint Peters, MO

Average sunshine days in January - Saint Peters, MO
  • Average sunshine days in January: 20.4 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (12.7 days).

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Average UV index in January
Saint Peters, MO

Average UV index in January - Saint Peters, 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).

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Average cloud cover in January
Saint Peters, MO

Average cloud cover in January - Saint Peters, 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).

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Average visibility in January
Saint Peters, MO

Average visibility in January - Saint Peters, 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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Saint Peters, Missouri, USA

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