January weather forecast
Merwin, MO

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Weather in January

January, like December, in Merwin, Missouri, is a wintry winter month, with an average temperature ranging between max 38.8°F (3.8°C) and min 24.3°F (-4.3°C).

Temperature

January, having an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 24.3°F (-4.3°C), is the coldest month.

Humidity

The average relative humidity in January is 73%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3.5 days and typically collects 0.35" (9mm) of precipitation.

Snowfall

Months with snowfall in Merwin, Missouri, are January through March, May, October through December. In Merwin, during January, snow falls for 2.8 days and regularly aggregates up to 0.59" (15mm) of snow. In Merwin, during the entire year, snow falls for 11.5 days and aggregates up to 2.2" (56mm) of snow.

Daylight

In Merwin, the average length of the day in January is 9h and 51min.
On the first day of the month, sunrise is at 7:35 am and sunset at 5:08 pm. On the last day of January, sunrise is at 7:24 am and sunset at 5:39 pm CST.

Sunshine

With an average of 5.3h of sunshine, January has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 2 during January morphs into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

January, with an average high of 38.8°F (3.8°C) and a low of 24.3°F (-4.3°C), signifies the coldest month of the year.

How cold is it in January?

January temperatures vary between a high-temperature of 38.8°F (3.8°C) and a low-temperature of 24.3°F (-4.3°C).

What is the average humidity in January in Merwin?

In Merwin, the average relative humidity in January is 73%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 3.5 days and accumulates 0.35" (9mm) of precipitation.

How many days does it rain in January?

In Merwin, in January, it is raining for 3.5 days, with typically 0.35" (9mm) of accumulated precipitation.

How much does it snow in January?

In Merwin, in January, snow falls for 2.8 days, with typically accumulated 0.59" (15mm) of snow.

What is the average length of the day in January?

In January, the average day length is 9h and 51min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:35 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:39 pm CST.

What is the month with the least sunshine?

With an average of 5.3h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Merwin have in January?

In Merwin, Missouri, the average sunshine duration in January is 5.3h.

What is the month with the lowest UV index?

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

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Merwin, MO

Average temperature in January - Merwin, MO
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in January
Merwin, MO

Average pressure in January - Merwin, MO
  • Average pressure in January: 30.17"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
Merwin, MO

Average wind speed in January - Merwin, MO
  • Average wind speed in January: 9.9mph

The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in January
Merwin, MO

Average humidity in January - Merwin, MO
  • Average humidity in January: 73%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in January
Merwin, MO

Average rainfall in January - Merwin, MO
  • Average rainfall in January: 0.35"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in January
Merwin, MO

Average rainfall days in January - Merwin, MO
  • Average rainfall days in January: 3.5 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.5 days).

Average snowfall in January
Merwin, MO

Average snowfall in January - Merwin, MO
  • Average snowfall in January: 0.59"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, June, July, August and September (0").

Average snowfall days in January
Merwin, MO

Average snowfall days in January - Merwin, MO
  • Average snowfall days in January: 2.8 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Merwin, 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: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

Average sunshine days in January
Merwin, MO

Average sunshine days in January - Merwin, MO
  • Average sunshine days in January: 25.2 days

The month with the most sunshine days is January (25.2 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in January
Merwin, MO

Average UV index in January - Merwin, 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
Merwin, MO

Average cloud cover in January - Merwin, MO
  • Average cloud cover in January: 42

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 26).

Average visibility in January
Merwin, MO

Average visibility in January - Merwin, 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).

Merwin, Missouri, USA

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