January weather forecast
Byrnes Mill, MO

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Weather in January

January, like December, in Byrnes Mill, Missouri, is an icy winter month, with temperature in the range of an average high of 38.1°F (3.4°C) and an average low of 24.6°F (-4.1°C).

Temperature

In Byrnes Mill, January is the coldest month, with temperatures averaging a high of 38.1°F (3.4°C) and a low of 24.6°F (-4.1°C).

Humidity

The average relative humidity in January in Byrnes Mill is 74%.

Rainfall

In January, in Byrnes Mill, the rain falls for 6.3 days. Throughout January, 2.05" (52mm) of precipitation is accumulated. In Byrnes Mill, Missouri, during the entire year, the rain falls for 141.7 days and collects up to 32.01" (813mm) of precipitation.

Snowfall

January through March, September, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 6.7 days and accumulates 2.52" (64mm) of snow.

Daylight

The average length of the day in January is 9h and 51min.
On the first day of January, sunrise is at 7:19 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:22 pm CST.

Sunshine

The month with the least sunshine in Byrnes Mill is January, with an average of 4.5h 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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: In January, a regular UV index of 2 translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the coldest time of year in Byrnes Mill?

In Byrnes Mill, January is known for its average lowest temperatures, reaching a high of 38.1°F (3.4°C) and a low of 24.6°F (-4.1°C).

Is it cold in Byrnes Mill during January?

During January, Byrnes Mill experiences an average high-temperature of 38.1°F (3.4°C) and a low-temperature of 24.6°F (-4.1°C).

What is the average humidity in January in Byrnes Mill?

The average relative humidity in January in Byrnes Mill, Missouri, is 74%.

How much does it rain in Byrnes Mill in January?

In Byrnes Mill, Missouri, in January, during 6.3 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

What is the snowiest month in Byrnes Mill?

January is the month with the most snowfall in Byrnes Mill, Missouri. Snow falls for 6.7 days and accumulates 2.52" (64mm) of snow.

How much does it snow in Byrnes Mill in January?

In January, in Byrnes Mill, Missouri, it is snowing for 6.7 days. Throughout January, 2.52" (64mm) of snow is accumulated.

What is the average length of the day in January in Byrnes Mill?

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

When is the sunrise / sunset in January in Byrnes Mill?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 4:52 pm. On the last day of the month, in Byrnes Mill, sunrise is at 7:08 am and sunset at 5:22 pm CST.

What is the month with the least sunshine in Byrnes Mill?

With an average of 4.5h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Byrnes Mill have in January?

In January, the average sunshine duration in Byrnes Mill, Missouri, is 4.5h.

What is the month with the lowest UV index in Byrnes Mill?

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

What is the UV index reading in January in Byrnes Mill?

In Byrnes Mill, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
43°F 6.1°C
38.1°F 3.4°C
42.8°F 6°C
Average low temperature
30.6°F -0.8°C
24.6°F -4.1°C
28°F -2.2°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.12" 765mmHg
Average wind speed
8.2mph 13.2km/h
8.9mph 14.3km/h
8.8mph 14.2km/h
Average max. wind speed
8.8mph 14.2km/h
9.4mph 15.1km/h
9.3mph 15km/h
Average wind speed gusts
13mph 20.9km/h
13.9mph 22.4km/h
13.7mph 22km/h
Average humidity
75%
74%
75%
Average rainfall
2.01" 51mm
2.05" 52mm
1.54" 39mm
Average rainfall days
7.2
6.3
7.5
Average snowfall
0.87" 22mm
2.52" 64mm
2.48" 63mm
Average snowfall days
3.6
6.7
5.1
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
4h 5min
4h 3min
4h 4min
Average sunshine days
20.1
19.1
15.4
Average UV index
2
2
2
Average cloud cover
49%
51%
49%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Byrnes Mill, MO

Average temperature in January - Byrnes Mill, MO
  • Average high temperature in January: 38.1°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in January: 24.6°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in January
Byrnes Mill, MO

Average pressure in January - Byrnes Mill, 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
Byrnes Mill, MO

Average wind speed in January - Byrnes Mill, MO
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Byrnes Mill, MO

Average humidity in January - Byrnes Mill, MO
  • Average humidity in January: 74%

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
Byrnes Mill, MO

Average rainfall in January - Byrnes Mill, MO
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is February (1.54").

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Average rainfall days in January
Byrnes Mill, MO

Average rainfall days in January - Byrnes Mill, MO
  • Average rainfall days in January: 6.3 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in January
Byrnes Mill, MO

Average snowfall in January - Byrnes Mill, MO
  • Average snowfall in January: 2.52"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in January
Byrnes Mill, MO

Average snowfall days in January - Byrnes Mill, MO
  • Average snowfall days in January: 6.7 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are April, May, June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Byrnes Mill, MO

Average daylight in January / Average sunshine in January - Byrnes Mill, 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 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in January
Byrnes Mill, MO

Average sunshine days in January - Byrnes Mill, MO
  • Average sunshine days in January: 19.1 days

The month with the most sunshine days is December (20.1 days).
The months with the least sunshine days are May and July (12.6 days).

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Average UV index in January
Byrnes Mill, MO

Average UV index in January - Byrnes Mill, MO
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
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
Byrnes Mill, MO

Average cloud cover in January - Byrnes Mill, MO
  • Average cloud cover in January: 51

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

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Average visibility in January
Byrnes Mill, MO

Average visibility in January - Byrnes Mill, 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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Byrnes Mill, Missouri, USA

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