January weather forecast
Gretna, OH

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Weather in January

January, the same as December, in Gretna, Ohio, is another subzero cold winter month, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 19.9°F (-6.7°C).

Temperature

With average high temperatures of 31.6°F (-0.2°C) and lows of 19.9°F (-6.7°C), January is the coldest month.

Humidity

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

Rainfall

In January, in Gretna, Ohio, the rain falls for 3.3 days. Throughout January, 0.43" (11mm) of precipitation is accumulated. In Gretna, during the entire year, the rain falls for 82.2 days and collects up to 6.02" (153mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Gretna, in January, during 5.9 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Gretna, during the entire year, snow falls for 21.1 days and aggregates up to 1.85" (47mm) of snow.

Daylight

In January, the average length of the day is 9h and 41min.
On the first day of the month, sunrise is at 7:58 am and sunset at 5:19 pm. On the last day of January, in Gretna, sunrise is at 7:45 am and sunset at 5:52 pm EST.

Sunshine

With an average of 3.4h of sunshine, January has the least sunshine of the year in Gretna.

UV index

The average daily maximum UV index in January in Gretna is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, an average UV index of 2 transforms into the following instructions:
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. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What time of the year is the coldest in Gretna?

January stands out as Gretna's coldest month, with temperatures ranging between an average high of 31.6°F (-0.2°C) and a low of 19.9°F (-6.7°C).

How cold is it in Gretna in January?

An average high-temperature, in January, in Gretna, is 31.6°F (-0.2°C) and the average low-temperature is 19.9°F (-6.7°C).

What is the most humid month in Gretna?

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

What is the average humidity in January in Gretna?

The average relative humidity in January is 84%.

How much does it rain in Gretna in January?

In January, in Gretna, the rain falls for 3.3 days. Throughout January, 0.43" (11mm) of precipitation is accumulated.

How much does it snow in Gretna in January?

In January, in Gretna, it is snowing for 5.9 days. Throughout January, 0.43" (11mm) of snow is accumulated.

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

In Gretna, Ohio, the average day length in January is 9h and 41min.

When is the sunrise / sunset in January in Gretna?

In January, on the first day of the month, sunrise is at 7:58 am and sunset at 5:19 pm. On the last day of the month, in Gretna, Ohio, sunrise is at 7:45 am and sunset at 5:52 pm EST.

What is the month with the least sunshine in Gretna?

With an average of 3.4h of sunshine, January has the least sunshine of the year in Gretna, Ohio.

How long on average sun shines in January in Gretna?

The average sunshine duration in January in Gretna is 3.4h.

What is the UV index reading in January in Gretna?

The average daily maximum UV index in January in Gretna is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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
Gretna, OH

Average temperature in January - Gretna, OH
  • Average high temperature in January: 31.6°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in January: 19.9°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

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Average pressure in January
Gretna, OH

Average pressure in January - Gretna, OH
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Gretna, OH

Average wind speed in January - Gretna, OH
  • Average wind speed in January: 10.7mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in January
Gretna, OH

Average humidity in January - Gretna, OH
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in January
Gretna, OH

Average rainfall in January - Gretna, OH
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is June (0.75").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in January
Gretna, OH

Average rainfall days in January - Gretna, OH
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is May (10 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in January
Gretna, OH

Average snowfall in January - Gretna, OH
  • Average snowfall in January: 0.43"

The month with the highest snowfall is February (0.47").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Gretna, OH

Average snowfall days in January - Gretna, OH
  • Average snowfall days in January: 5.9 days

The month with the highest number of snowfall days is January (5.9 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
Gretna, OH

Average daylight in January / Average sunshine in January - Gretna, OH
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in January
Gretna, OH

Average sunshine days in January - Gretna, OH
  • Average sunshine days in January: 23.3 days

The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is May (17.5 days).

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Average UV index in January
Gretna, OH

Average UV index in January - Gretna, OH
  • Average UV index in January: 2

The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Gretna, OH

Average cloud cover in January - Gretna, OH
  • Average cloud cover in January: 64

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Gretna, OH

Average visibility in January - Gretna, OH
  • Average visibility in January: 6mi

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

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Gretna, Ohio, USA

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