Climate and monthly weather forecastHarley, IN
Climate and monthly weather forecast
Weather in January
January, the same as December, in Harley, Indiana, is a freezing cold winter month, with temperature in the range of an average low of 19.4°F (-7°C) and an average high of 31.3°F (-0.4°C). January is the month that records the lowest temperatures, with averages ranging from a high of 31.3°F (-0.4°C) to a low of 19.4°F (-7°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Harley, Indiana, with an average temperature varying between 36.1°F (2.3°C) and 23.2°F (-4.9°C). February's arrival registers an average high-temperature of a wintry 36.1°F (2.3°C), closely aligning with the temperature of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Harley, Indiana, with an average temperature ranging between min 33.4°F (0.8°C) and max 48.2°F (9°C). A rise in the average high-temperature is observed during March, moving from an icy 36.1°F (2.3°C) in February to a frosty 48.2°F (9°C). Weather in March »Weather in April
April is a moderate spring month in Harley, Indiana, with an average temperature fluctuating between 60.1°F (15.6°C) and 43.7°F (6.5°C). April comes with an increase, with the average high-temperature moving from a chilly 48.2°F (9°C) in March to a moderate 60.1°F (15.6°C). Weather in April »Weather in May
May, the last month of the spring in Harley, is an agreeable month, with an average temperature varying between 71.6°F (22°C) and 54.7°F (12.6°C). An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 60.1°F (15.6°C) in April to a pleasant 71.6°F (22°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Harley, Indiana, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.2°F (16.8°C). June's arrival signals a modest temperature shift, moving from an agreeable 71.6°F (22°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Harley, Indiana, with an average temperature varying between 64°F (17.8°C) and 81°F (27.2°C). Harley's July weather, marked by an average high temperature of 81°F (27.2°C) and an average low temperature of 64°F (17.8°C), is the warmest in the year. During July, the heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Harley, is also a moderately hot month, with an average temperature fluctuating between 62.2°F (16.8°C) and 79.7°F (26.5°C). The onset of August brings with it an average high-temperature of a still moderately hot 79.7°F (26.5°C), showing a negligible variation from the month before. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Harley, Indiana, with an average temperature ranging between min 56.8°F (13.8°C) and max 75°F (23.9°C). Transitioning into September, Harley experiences an average high-temperature of a still moderately hot 75°F (23.9°C), marking a minor shift from the preceding month. Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Harley, Indiana, with an average temperature ranging between max 62.4°F (16.9°C) and min 46.6°F (8.1°C). October's arrival comes with a decrease in the average high-temperature, moving from a warm 75°F (23.9°C) in September to a comfortable 62.4°F (16.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Harley, Indiana, with an average temperature varying between 48.2°F (9°C) and 35.1°F (1.7°C). The arrival of November indicates a decrease in the average high-temperature, moving from a refreshing 62.4°F (16.9°C) in October to a frosty 48.2°F (9°C). Weather in November »Weather in December
December, the first month of the winter in Harley, is also a wintry month, with an average temperature ranging between max 37°F (2.8°C) and min 27.1°F (-2.7°C). Harley's average high-temperature decreases in December, falling from a frosty 48.2°F (9°C) in November to an icy 37°F (2.8°C). Weather in December »Updated: Aug 24, 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
January, noted for its average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 19.4°F (-7°C), is considered the coldest month.
In Harley, during the entire year, the rain falls for 143.1 days and collects up to 20.91" (531mm) of precipitation.
January through April, October through December are months with snowfall in Harley.
In Harley, during the entire year, snow falls for 37.1 days and aggregates up to 8.15" (207mm) of snow.
January has the least sunshine of the year, with an average of 3.8h of sunshine.
February is the month with the most snowfall. Snow falls for 8.7 days and accumulates 2.44" (62mm) of snow.
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.
April is the month with the most rainfall. Rain falls for 14.8 days and accumulates 2.64" (67mm) of precipitation.
May through September are months without snowfall.
The month with the longest days in Harley is June, with an average of 15h and 0min of daylight.
The months with the most sunshine are June and July, with an average of 10h of sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
July registers as the month with the average highest temperatures, reaching 81°F (27.2°C) at its peak and 64°F (17.8°C) at the lowest.
July is the most humid month, with an average relative humidity of 84%.
October is the least humid month, with an average relative humidity of 72%.
December is the month with the least rainfall in Harley. Rain falls for 8.6 days and accumulates 1.18" (30mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Harley, IN
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.3°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure
Harley, IN
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Harley, IN
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Harley, IN
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Harley, IN
- Average rainfall in January:
1.34" - Average rainfall in February:
1.22" - Average rainfall in March:
2.01" - Average rainfall in April:
2.64" - Average rainfall in May:
2.56" - Average rainfall in June:
2.13"
- Average rainfall in July:
1.97" - Average rainfall in August:
1.85" - Average rainfall in September:
1.26" - Average rainfall in October:
1.46" - Average rainfall in November:
1.3" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days
Harley, IN
- Average rainfall days in January:
6 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
11.8 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6 days).
Average snowfall
Harley, IN
The month with the highest snowfall is February (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Harley, IN
- Average snowfall days in January:
11.5 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.1 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:
0.2 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
7.2 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Harley, IN
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 12min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Harley, IN
- Average sunshine days in January:
16 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
15 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (11.2 days).
Average UV index
Harley, IN
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Harley, IN
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are June and August (Cloud cover 33).
Average visibility
Harley, IN
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
