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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Harper, Indiana, is an icy winter month, with an average temperature fluctuating between 22.8°F (-5.1°C) and 34.9°F (1.6°C). Temperature records mark January as the coldest month, with highs averaging 34.9°F (1.6°C) and lows at 22.8°F (-5.1°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Harper, Indiana, with an average temperature ranging between min 26.1°F (-3.3°C) and max 39.9°F (4.4°C). February registers an average high-temperature of a still wintry 39.9°F (4.4°C), slightly varied from January's 34.9°F (1.6°C). Weather in February »
Weather in March
March, the first month of the spring in Harper, is a fresh month, with an average temperature varying between 35.4°F (1.9°C) and 50.9°F (10.5°C). With the transition into March, Harper experiences an increase in average high-temperatures, moving up from a wintry 39.9°F (4.4°C) in February to a fresh 50.9°F (10.5°C). Weather in March »
Weather in April
April is a refreshing spring month in Harper, Indiana, with an average temperature varying between 45.7°F (7.6°C) and 63°F (17.2°C). The start of April brings a rise in the average high-temperature, moving from a fresh 50.9°F (10.5°C) in March to a comfortable 63°F (17.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Harper, Indiana, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 55.9°F (13.3°C). As Harper transitions into May, a rise in the average high-temperature is observed, moving from a comfortable 63°F (17.2°C) in April to a pleasant 72.9°F (22.7°C). Weather in May »
Weather in June
June, the first month of the summer in Harper, is a moderately hot month, with an average temperature fluctuating between 62.8°F (17.1°C) and 80.2°F (26.8°C). June witnesses a subtle temperature ascent, adjusting from a pleasant 72.9°F (22.7°C) in May to a warm 80.2°F (26.8°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Harper, Indiana, with an average temperature ranging between max 83.1°F (28.4°C) and min 65.3°F (18.5°C). In Harper, the peak temperatures are generally noted in July, averaging a high of 83.1°F (28.4°C) and a low of 65.3°F (18.5°C). For most parts of July, the heat index is appraised at a tropical 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Harper, is also a moderately hot month, with an average temperature varying between 63.5°F (17.5°C) and 82°F (27.8°C). Harper's average high-temperature in August sits at a still moderately hot 82°F (27.8°C), showing little difference from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Harper, Indiana, with an average temperature fluctuating between 76.3°F (24.6°C) and 58.3°F (14.6°C). The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 82°F (27.8°C) to a still moderately hot 76.3°F (24.6°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Harper, Indiana, with an average temperature varying between 64°F (17.8°C) and 47.1°F (8.4°C). Onset of October comes with a temperature decline, the average high falling from a moderately hot 76.3°F (24.6°C) in September to a comfortable 64°F (17.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Harper, Indiana, with an average temperature ranging between min 36.5°F (2.5°C) and max 50.9°F (10.5°C). The onset of November results in a decrease in the average high-temperature, receding from a refreshing 64°F (17.8°C) in October to a fresh 50.9°F (10.5°C). Weather in November »
Weather in December
December, the first month of the winter in Harper, is still a cold month, with an average temperature varying between 29.5°F (-1.4°C) and 40.6°F (4.8°C). As December begins, there is a decrease in the average high-temperature, falling from a cool 50.9°F (10.5°C) in November to an icy 40.6°F (4.8°C). Weather in December »
Updated: Aug 31, 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
What is the coldest month?
The month of January, characterized by an average high of 34.9°F (1.6°C) and a low of 22.8°F (-5.1°C), is recognized as the coldest.
How much does it rain?
Throughout the year, there are 137.6 rainfall days, and 17.99" (457mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
How much does it snow?
In Harper, during the entire year, snow falls for 29.3 days and aggregates up to 5.35" (136mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4h of sunshine.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 4.6 days and accumulates 1.46" (37mm) of snow.
When is Daylight Saving Time (DST) in Harper?
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.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 15.4 days and typically aggregates up to 2.01" (51mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What are the months with the highest UV index?
The months with the highest UV index in Harper are June through August, with an average maximum UV index of 6.
What is the warmest month?
In Harper, the average temperatures in July are the highest, with a peak at 83.1°F (28.4°C) and a low of 65.3°F (18.5°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.3h of sunshine.
What is the driest month?
September is the month with the least rainfall. Rain falls for 11.3 days and accumulates 0.98" (25mm) of precipitation.
What is the least humid month in Harper?
The least humid month is October, with an average relative humidity of 74%.
What is the most humid month in Harper?
December is the most humid month, with an average relative humidity of 82%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
When is the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Harper, IN
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.9°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure
Harper, IN
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Harper, IN
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.1mph - Average wind speed in March:
8.8mph - Average wind speed in April:
9mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.4mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.1mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity
Harper, IN
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Harper, IN
- Average rainfall in January:
1.3" - Average rainfall in February:
1.42" - Average rainfall in March:
1.46" - Average rainfall in April:
1.89" - Average rainfall in May:
2.01" - Average rainfall in June:
1.73"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.38" - Average rainfall in September:
0.98" - Average rainfall in October:
1.46" - Average rainfall in November:
1.3" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is September (0.98").
Average rainfall days
Harper, IN
- Average rainfall days in January:
8 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
13.2 days
- Average rainfall days in July:
15.1 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
10 days - Average rainfall days in November:
8 days - Average rainfall days in December:
9.9 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is February (7.9 days).
Average snowfall
Harper, IN
The month with the highest snowfall is March (1.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Harper, IN
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.6 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:
0.3 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
6.6 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Harper, IN
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Harper, IN
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
13.4 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
16.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (12.4 days).
Average UV index
Harper, IN
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Harper, IN
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Harper, IN
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Harper, Indiana, USA
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