Climate and monthly weather forecast
Grethel, KY

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Weather in January

January, like December, in Grethel, Kentucky, is an icy winter month, with an average temperature varying between 27°F (-2.8°C) and 41.2°F (5.1°C). Grethel notes the coldest temperatures in January, with a high average of 41.2°F (5.1°C) and a low of 27°F (-2.8°C). Weather in January »

Weather in February

February, the last month of the winter in Grethel, is a chilly month, with an average temperature varying between 30.6°F (-0.8°C) and 46.2°F (7.9°C). The commencement of February introduces an average high-temperature of a chilly 46.2°F (7.9°C), closely mirroring the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Grethel, Kentucky, with an average temperature ranging between max 54.9°F (12.7°C) and min 37.6°F (3.1°C). In March, the meteorological conditions subtly change with the average high-temperature edging from a chilly 46.2°F (7.9°C) in February to a fresh 54.9°F (12.7°C). Weather in March »

Weather in April

April is a comfortable spring month in Grethel, Kentucky, with an average temperature fluctuating between 66.7°F (19.3°C) and 46°F (7.8°C). April's arrival sees a rise in the average high-temperature, jumping from March's fresh 54.9°F (12.7°C) to a refreshing 66.7°F (19.3°C). Weather in April »

Weather in May

May, the last month of the spring in Grethel, is a moderately hot month, with an average temperature fluctuating between 54°F (12.2°C) and 76.5°F (24.7°C). May brings a rise in the average high-temperature, transitioning from April's refreshing 66.7°F (19.3°C) to a warm 76.5°F (24.7°C). Weather in May »

Weather in June

June, the first month of the summer in Grethel, is also a moderately hot month, with an average temperature ranging between max 83.5°F (28.6°C) and min 59.5°F (15.3°C). Grethel, Kentucky, in June denotes a subtle temperature transition, adjusting from an average high of a warm 76.5°F (24.7°C) in May to a still moderately hot 83.5°F (28.6°C). Weather in June »

Weather in July

July is a tropical summer month in Grethel, Kentucky, with an average temperature fluctuating between 63.1°F (17.3°C) and 86.7°F (30.4°C). July, recognised by an average high temperature of 86.7°F (30.4°C) and a low of 63.1°F (17.3°C), is Grethel's warmest month. During July, the heat index is calculated to be a very hot 98.6°F (37°C). Weather in July »

Weather in August

August, the last month of the summer in Grethel, is another warm month, with an average temperature ranging between min 61°F (16.1°C) and max 85.3°F (29.6°C). At the start of August, Grethel's average high-temperature reaches a moderately hot 85.3°F (29.6°C), subtly different from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Grethel, is still a warm month, with an average temperature ranging between min 56.8°F (13.8°C) and max 79.3°F (26.3°C). In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 85.3°F (29.6°C) in August to a still moderately hot 79.3°F (26.3°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Grethel, Kentucky, with an average temperature fluctuating between 66.9°F (19.4°C) and 47.1°F (8.4°C). With the onset of October, Grethel's average high-temperature adjusts, receding from September's warm 79.3°F (26.3°C) to a comfortable 66.9°F (19.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Grethel, is another cool month, with an average temperature fluctuating between 37.8°F (3.2°C) and 54.5°F (12.5°C). The shift from October to November involves a decrease in the average high-temperature, from an enjoyable 66.9°F (19.4°C) to a fresh 54.5°F (12.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Grethel, Kentucky, with an average temperature fluctuating between 33.3°F (0.7°C) and 45.9°F (7.7°C). December's onset brings a negligible change in high-temperatures, falling from a fresh 54.5°F (12.5°C) in November to a frosty 45.9°F (7.7°C). Weather in December »
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

With its average high temperature of 41.2°F (5.1°C) and a low of 27°F (-2.8°C), January is regarded as the coldest month.

How much does it rain?

In Grethel, Kentucky, during the entire year, the rain falls for 181.3 days and collects up to 34.02" (864mm) of precipitation.

When does it snow?

Months with snowfall are January through April, October through December.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 11.4 days and typically aggregates up to 4.17" (106mm) of snow.

How many days does it snow?

Throughout the year, in Grethel, there are 36.4 snowfall days, and 15.24" (387mm) of snow is accumulated.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 4.1h of sunshine.

When is the lowest UV index in Grethel?

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

What is the most humid month?

The most humid month is February, with an average relative humidity of 80%.

What is the wettest month?

The month with the most rainfall in Grethel is February, when the rain falls for 12.8 days and typically aggregates up to 3.62" (92mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow?

In Grethel, snow does not fall in May through September.

When are the longest days?

June has the longest days of the year, with an average of 14h and 42min of daylight.

What are the months with the highest UV index?

The months with the highest UV index are June and August, with an average maximum UV index of 6.

What time of the year is the hottest in Grethel?

July stands out as Grethel's warmest month, with temperatures ranging between an average high of 86.7°F (30.4°C) and a low of 63.1°F (17.3°C).

What are the least humid months?

July, August and November, with an average relative humidity of 74%, are the least humid months in Grethel.

What month has the most sunshine?

With an average of 10.3h of sunshine, August has the most sunshine of the year.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.73" (44mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

Average temperature
Grethel, KY

Average temperature - Grethel, KY

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (41.2°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure
Grethel, KY

Average pressure - Grethel, KY

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed
Grethel, KY

Average wind speed - Grethel, KY

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity
Grethel, KY

Average humidity - Grethel, KY

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are July, August and November (74%).

Average rainfall
Grethel, KY

Average rainfall - Grethel, KY

The wettest month (with the highest rainfall) is February (3.62").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days
Grethel, KY

Average rainfall days - Grethel, KY

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is November (11.3 days).

Average snowfall
Grethel, KY

Average snowfall - Grethel, KY

The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Grethel, KY

Average snowfall days - Grethel, KY

The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Grethel, KY

Average daylight / Average sunshine - Grethel, KY

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days
Grethel, KY

Average sunshine days - Grethel, KY

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8.3 days).

Average UV index
Grethel, KY

Average UV index - Grethel, KY

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

Average visibility
Grethel, KY

Average visibility - Grethel, KY

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

Grethel, Kentucky, USA

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