Climate and monthly weather forecastHarlan, KY
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Harlan, Kentucky, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 40.6°F (4.8°C). With an average high-temperature of 40.6°F (4.8°C) and an average low-temperature of 26.8°F (-2.9°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a chilly month in Harlan, Kentucky, with an average temperature varying between 45.3°F (7.4°C) and 30°F (-1.1°C). As Harlan transitions into February, the average high-temperature stands at a frosty 45.3°F (7.4°C), offering little variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Harlan, is a cool month, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 54.3°F (12.4°C). As March begins, there is an increase in the average high-temperature, moving from a chilly 45.3°F (7.4°C) in February to a fresh 54.3°F (12.4°C). Weather in March »Weather in April
April is a comfortable spring month in Harlan, Kentucky, with an average temperature fluctuating between 65.7°F (18.7°C) and 45.5°F (7.5°C). With the onset of April, Harlan's average high-temperature sees a rise, moving from March's fresh 54.3°F (12.4°C) to an enjoyable 65.7°F (18.7°C). Weather in April »Weather in May
May, the last month of the spring in Harlan, is a warm month, with an average temperature fluctuating between 74.8°F (23.8°C) and 53.1°F (11.7°C). The shift from April to May sees an increase in the average high-temperature, transitioning from a refreshing 65.7°F (18.7°C) to a moderately hot 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Harlan, is also a moderately hot month, with an average temperature varying between 81.9°F (27.7°C) and 59°F (15°C). Harlan, Kentucky, in June denotes a subtle temperature transition, adjusting from an average high of 74.8°F (23.8°C) in May to a still warm 81.9°F (27.7°C). Weather in June »Weather in July
July, like June, in Harlan, Kentucky, is a moderately hot summer month, with an average temperature fluctuating between 84.6°F (29.2°C) and 62.2°F (16.8°C). July, with an average high of 84.6°F (29.2°C) and a low of 62.2°F (16.8°C), signifies the warmest month of the year. July's mean heat index is estimated at a fiery hot 95°F (35°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Harlan, Kentucky, with an average temperature ranging between min 60.6°F (15.9°C) and max 83.7°F (28.7°C). The advent of August brings an average high-temperature of a still moderately hot 83.7°F (28.7°C), exhibiting minor difference from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Harlan, is also a moderately hot month, with an average temperature fluctuating between 56.3°F (13.5°C) and 77.9°F (25.5°C). Harlan's September weather features a light decline in high-temperatures, reducing from a moderately hot 83.7°F (28.7°C) in August to a still warm 77.9°F (25.5°C). Weather in September »Weather in October
October, like September, in Harlan, Kentucky, is another refreshing autumn month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 65.8°F (18.8°C). The commencement of October involves a temperature shift, with the average high-temperature dropping from a warm 77.9°F (25.5°C) in September to an enjoyable 65.8°F (18.8°C). Weather in October »Weather in November
November, the last month of the autumn in Harlan, is also a fresh month, with an average temperature ranging between min 36.7°F (2.6°C) and max 53.6°F (12°C). With November's onset, the weather shows a temperature decrease, transitioning from a refreshing 65.8°F (18.8°C) in October to a cool 53.6°F (12°C). Weather in November »Weather in December
December, the first month of the winter in Harlan, is also a frosty month, with an average temperature ranging between max 45.1°F (7.3°C) and min 32.9°F (0.5°C). With December's onset, the weather reveals a slight temperature decrease, transitioning from a fresh 53.6°F (12°C) in November to a chilly 45.1°F (7.3°C). Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Harlan's coldest month, January, registers temperatures that range from a high of 40.6°F (4.8°C) to a low of 26.8°F (-2.9°C).
In Harlan, during the entire year, the rain falls for 190.4 days and collects up to 40.28" (1023mm) of precipitation.
Months with snowfall in Harlan, Kentucky, are January through April, October through December.
The month with the most snowfall in Harlan is January, when snow falls for 10 days and typically aggregates up to 4.21" (107mm) of snow.
Throughout the year, there are 34 snowfall days, and 15.71" (399mm) of snow is accumulated.
With an average of 4.4h of sunshine, January has the least sunshine of the year in Harlan, Kentucky.
The months with the lowest UV index in Harlan are January, February, November and December, with an average maximum UV index of 2.
The most humid month in Harlan is February, with an average relative humidity of 81%.
February is the month with the most rainfall in Harlan. Rain falls for 13.4 days and accumulates 4.57" (116mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Harlan, Kentucky, 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.
April, June, August and November, with an average relative humidity of 77%, are the least humid months in Harlan, Kentucky.
May through September are months without snowfall in Harlan, Kentucky.
May, June and August, with an average maximum UV index of 6, are months with the highest UV index in Harlan, Kentucky.
June has the longest days of the year in Harlan, Kentucky, with an average of 14h and 36min of daylight.
With an average of 10.1h of sunshine, June has the most sunshine of the year in Harlan.
In Harlan, July registers the highest temperatures, averaging 84.6°F (29.2°C) at the peak and 62.2°F (16.8°C) at the lowest.
The month with the least rainfall in Harlan, Kentucky, is September, when the rain falls for 15.3 days and typically collects 2.24" (57mm) of precipitation.
With an average of 9h and 42min of daylight, December has the shortest days of the year in Harlan, Kentucky.
Average temperature
Harlan, KY
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (40.6°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Harlan, KY
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"Hg
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
Harlan, KY
- Average wind speed in January:
6.2mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.3mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.3mph - Average wind speed in June:
4.7mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.8mph - Average wind speed in September:
4mph - Average wind speed in October:
4.9mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity
Harlan, KY
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April, June, August and November (77%).
Average rainfall
Harlan, KY
- Average rainfall in January:
3.35" - Average rainfall in February:
4.57" - Average rainfall in March:
3.39" - Average rainfall in April:
3.5" - Average rainfall in May:
3.54" - Average rainfall in June:
3.31"
- Average rainfall in July:
4.13" - Average rainfall in August:
2.87" - Average rainfall in September:
2.24" - Average rainfall in October:
2.91" - Average rainfall in November:
2.83" - Average rainfall in December:
3.62"
The wettest month (with the highest rainfall) is February (4.57").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days
Harlan, KY
- Average rainfall days in January:
13.3 days - Average rainfall days in February:
13.4 days - Average rainfall days in March:
16.8 days - Average rainfall days in April:
17.1 days - Average rainfall days in May:
19.9 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
20.1 days - Average rainfall days in August:
17.6 days - Average rainfall days in September:
15.3 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
11.5 days - Average rainfall days in December:
14.1 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is November (11.5 days).
Average snowfall
Harlan, KY
The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Harlan, KY
- Average snowfall days in January:
10 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
4.9 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
6.8 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Harlan, KY
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
5h and 12min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Harlan, KY
- Average sunshine days in January:
11 days - Average sunshine days in February:
9.4 days - Average sunshine days in March:
10 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
9.1 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
9.2 days - Average sunshine days in August:
11.2 days - Average sunshine days in September:
12.8 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
12.3 days
The month with the most sunshine days is October (15.8 days).
The month with the least sunshine days is May (9.1 days).
Average UV index
Harlan, KY
The months with the highest UV index are May, June and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Harlan, KY
The months with the most cloud cover are January and February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Harlan, 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).
