January weather forecast and climate
Martinsville, MO

January, the same as December, is another cold winter month in Martinsville, Missouri, with average temperature varying between 18.7°F (-7.4°C) and 32.5°F (0.3°C).

Temperature

With an average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 18.7°F (-7.4°C), January is the coldest month.

Humidity

In January, the average relative humidity is 78%.

Rainfall

January and February are months with the least rain when the rain falls for 4.1 days and typically aggregates up to 0.91" (23mm) of rain.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is January when snow falls for 8 days and typically aggregates up to 3.62" (92mm) of snow.

Daylight

In January, the average length of the day in Martinsville, Missouri, is 9.7h.

Sunshine

With an average of 4.6h of sunshine, January has the least sunshine of the year in Martinsville, Missouri.

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 of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
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. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Martinsville?

January is the coldest month in Martinsville, Missouri, with an average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 18.7°F (-7.4°C).

What is the temperature in January in Martinsville?

In Martinsville, Missouri, in January, the average high-temperature is 32.5°F (0.3°C), and the average low-temperature is 18.7°F (-7.4°C).

What is the average humidity in January in Martinsville?

In January, the average relative humidity in Martinsville, Missouri, is 78%.

How many days does it rain in January in Martinsville?

In January, in Martinsville, Missouri, the rain falls for 4.1 days. Throughout January, 0.91" (23mm) of precipitation is accumulated.

What is the driest month in Martinsville?

Months with the least rainfall are January and February Rain falls for 4.1 days and accumulates 0.91" (23mm) of rain.

How many days does it snow in January in Martinsville?

In Martinsville, during January, snow falls for 8 days and regularly aggregates up to 3.62" (92mm) of snow.

What is the snowiest month in Martinsville?

The month with the most snowfall in Martinsville is January when snow falls for 8 days and typically aggregates up to 3.62" (92mm) of snow.

What is the average length of the day in January in Martinsville?

In January, the average length of the day in Martinsville is 9.7h.

What is the month with the least sunshine in Martinsville?

With an average of 4.6h of sunshine, January has the least sunshine of the year in Martinsville.

How long on average sun shines in January in Martinsville?

The average sunshine in January in Martinsville is 4.6h.

What are the months with the lowest UV index in Martinsville?

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

What is the UV index intensity in January in Martinsville?

In January, the average daily maximum UV index in Martinsville is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in January - Martinsville, MO
  • Average high temperature in January: 0.3°C

The warmest month (with the highest average high temperature) is July (29.2°C).
The month with the lowest average high temperature is January (0.3°C).

  • Average low temperature in January: -7.4°C

The month with the highest average low temperature is July (19.3°C).
The coldest month (with the lowest average low temperature) is January (-7.4°C).

Average pressure in January - Martinsville, MO
  • Average pressure in January: 1021.6mbar

The month with the highest atmospheric pressure is January (1021.6mbar).
The month with the lowest atmospheric pressure is June (1012mbar).

Average wind speed in January - Martinsville, MO
  • Average wind speed in January: 15.9km/h

The windiest month (with the highest average wind speed) is March (16.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

Average humidity in January - Martinsville, MO
  • Average humidity in January: 78%

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

Average rainfall in January - Martinsville, MO
  • Average rainfall in January: 23mm

The wettest month (with the highest rainfall) is June (98mm).
The driest months (with the least rainfall) are January and February (23mm).

Average rainfall days in January - Martinsville, MO
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.1 days).

Average snowfall in January - Martinsville, MO
  • Average snowfall in January: 92mm

The month with the highest snowfall is January (92mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in January - Martinsville, MO
  • Average snowfall days in January: 8 days

The month with the highest number of snowfall days is January (8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Martinsville, MO
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 4.6h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.6h).

Average sunshine days in January - Martinsville, MO
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (10.8 days).

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

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

Average cloud cover in January - Martinsville, MO
  • Average cloud cover in January: 49

Months with the most cloud cover are January and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in January - Martinsville, MO
  • Average visibility in January: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).