January weather forecast
Green Brier, IA

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Weather in January

January, like December, is a freezing cold winter month in Green Brier, Iowa, with an average temperature varying between 26.8°F (-2.9°C) and 13.5°F (-10.3°C).

Temperature

January, on average, is the coldest month, registering a high temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C).

Humidity

The most humid month is January, with an average relative humidity of 84%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall in Green Brier is January, when snow falls for 9.8 days and typically aggregates up to 4.29" (109mm) of snow.

Daylight

In Green Brier, the average length of the day in January is 9h and 32min.
On the first day of January, sunrise is at 7:45 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:30 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 4.2h of sunshine.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Green Brier. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 2 in January suggests the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What is the coldest time of year in Green Brier?

With its average high temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C), January is regarded as the coldest month in Green Brier, Iowa.

How cold is January in Green Brier?

The high-temperature, in January, in Green Brier, is 26.8°F (-2.9°C), while the low-temperature averages to 13.5°F (-10.3°C).

What is the most humid month in Green Brier?

January is the most humid month, with an average relative humidity of 84%.

What is the average humidity in January in Green Brier?

The average relative humidity in January in Green Brier is 84%.

What is the driest month in Green Brier?

The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.

How much does it rain in Green Brier in January?

In Green Brier, during January, the rain falls for 3.8 days and regularly aggregates up to 0.87" (22mm) of precipitation.

What is the snowiest month in Green Brier?

January is the month with the most snowfall in Green Brier. Snow falls for 9.8 days and accumulates 4.29" (109mm) of snow.

How many days does it snow in January in Green Brier?

In Green Brier, in January, snow falls for 9.8 days, with typically accumulated 4.29" (109mm) of snow.

What is the average length of the day in January in Green Brier?

The average day length in January is 9h and 32min.

When are sunrise and sunset in January in Green Brier?

On the first day of January in Green Brier, sunrise is at 7:45 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:30 pm CST.

What is the month with the least sunshine in Green Brier?

The month with the least sunshine in Green Brier is January, with an average of 4.2h of sunshine.

How many hours of sunshine does Green Brier have in January?

In January, the average sunshine duration is 4.2h.

What are the months with the lowest UV index in Green Brier?

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.

What is the UV index intensity in January in Green Brier?

In January, the average daily maximum UV index in Green Brier is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
32°F 0°C
26.8°F -2.9°C
30.6°F -0.8°C
Average low temperature
21°F -6.1°C
13.5°F -10.3°C
16.9°F -8.4°C
Average pressure
30.12" 765mmHg
30.16" 766mmHg
30.14" 766mmHg
Average wind speed
10.2mph 16.4km/h
10.6mph 17.1km/h
10.5mph 16.9km/h
Average max. wind speed
10.9mph 17.5km/h
11.3mph 18.2km/h
11.2mph 18km/h
Average wind speed gusts
16.2mph 26.1km/h
17mph 27.4km/h
16.5mph 26.6km/h
Average humidity
80%
84%
82%
Average rainfall
1.34" 34mm
0.87" 22mm
1.02" 26mm
Average rainfall days
4.8
3.8
3.4
Average snowfall
2.64" 67mm
4.29" 109mm
3.66" 93mm
Average snowfall days
8.3
9.8
8.8
Average daylight
9h 1min
9h 3min
10h 4min
Average sunshine
4h 4min
4h 1min
4h 5min
Average sunshine days
18.8
18.1
16.5
Average UV index
2
2
2
Average cloud cover
50%
55%
51%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Green Brier, IA

Average temperature in January - Green Brier, IA
  • Average high temperature in January: 26.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in January: 13.5°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in January
Green Brier, IA

Average pressure in January - Green Brier, IA
  • 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 (29.88"Hg).

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Average wind speed in January
Green Brier, IA

Average wind speed in January - Green Brier, IA
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in January
Green Brier, IA

Average humidity in January - Green Brier, IA
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in January
Green Brier, IA

Average rainfall in January - Green Brier, IA
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in January
Green Brier, IA

Average rainfall days in January - Green Brier, IA
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in January
Green Brier, IA

Average snowfall in January - Green Brier, IA
  • Average snowfall in January: 4.29"

The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Green Brier, IA

Average snowfall days in January - Green Brier, IA
  • Average snowfall days in January: 9.8 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Green Brier, IA

Average daylight in January / Average sunshine in January - Green Brier, IA
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in January
Green Brier, IA

Average sunshine days in January - Green Brier, IA
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in January
Green Brier, IA

Average UV index in January - Green Brier, IA
  • Average UV index in January: 2

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

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Average cloud cover in January
Green Brier, IA

Average cloud cover in January - Green Brier, IA
  • Average cloud cover in January: 55

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

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Average visibility in January
Green Brier, IA

Average visibility in January - Green Brier, IA
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

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Green Brier, Iowa, USA

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