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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, is a freezing cold winter month in Hillsboro, Iowa, with an average temperature varying between 29.7°F (-1.3°C) and 17.4°F (-8.1°C). January is the month when Hillsboro sees the lowest average temperatures, with a high of 29.7°F (-1.3°C) and a low of 17.4°F (-8.1°C). Weather in January »
Weather in February
February, the last month of the winter in Hillsboro, is a cold month, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 21°F (-6.1°C). With the transition into February, Hillsboro notes an average high-temperature of a cold 34.3°F (1.3°C), closely resembling January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Hillsboro, Iowa, with an average temperature varying between 33.3°F (0.7°C) and 48.2°F (9°C). The shift from February to March is marked by an increase in the average high-temperature, moving from an icy 34.3°F (1.3°C) to a chilly 48.2°F (9°C). Weather in March »
Weather in April
April is an enjoyable spring month in Hillsboro, Iowa, with an average temperature varying between 43.3°F (6.3°C) and 60.8°F (16°C). The arrival of April brings an increase in high-temperatures, moving from a frosty 48.2°F (9°C) in March to an enjoyable 60.8°F (16°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Hillsboro, Iowa, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 53.8°F (12.1°C). The shift into May is characterized by a rise in the average high-temperature, transitioning from April's enjoyable 60.8°F (16°C) to an agreeable 70.9°F (21.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Hillsboro, Iowa, with an average temperature ranging between max 79.9°F (26.6°C) and min 63.7°F (17.6°C). The transition from May to June brings a temperature rise, with average high-temperatures increasing from an agreeable 70.9°F (21.6°C) to a moderately hot 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Hillsboro, Iowa, is another warm summer month, with an average temperature ranging between min 65.3°F (18.5°C) and max 82.4°F (28°C). Hillsboro registers the highest average temperatures during the month of July, with peaks of 82.4°F (28°C) and lows of 65.3°F (18.5°C). In July, the heat index is estimated at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Hillsboro, Iowa, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 63.3°F (17.4°C). The high-temperature average in August for Hillsboro is a still moderately hot 81.7°F (27.6°C), staying closely aligned with July's conditions. Weather in August »
Weather in September
September, the first month of the autumn in Hillsboro, is still a warm month, with an average temperature ranging between max 76.3°F (24.6°C) and min 56.7°F (13.7°C). The move into September indicates a slight reduction in the average high-temperature, down from August's 81.7°F (27.6°C) to a still moderately hot 76.3°F (24.6°C). Weather in September »
Weather in October
October, like September, in Hillsboro, Iowa, is another comfortable autumn month, with an average temperature fluctuating between 45.7°F (7.6°C) and 61.7°F (16.5°C). A decrease in the average high-temperature marks October, falling from September's warm 76.3°F (24.6°C) to an enjoyable 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Hillsboro, is another chilly month, with an average temperature ranging between min 34°F (1.1°C) and max 48°F (8.9°C). The commencement of November indicates a shift in the average high-temperature, receding from October's comfortable 61.7°F (16.5°C) to a chilly 48°F (8.9°C). Weather in November »
Weather in December
December, the first month of the winter in Hillsboro, is still a cold month, with an average temperature varying between 36°F (2.2°C) and 24.6°F (-4.1°C). With the onset of December, Hillsboro's average high-temperature adjusts, receding from November's chilly 48°F (8.9°C) to a cold 36°F (2.2°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?
January, on average, is the coldest month, registering a high temperature of 29.7°F (-1.3°C) and a low of 17.4°F (-8.1°C).
How many days does it rain in Hillsboro?
In Hillsboro, during the entire year, the rain falls for 140.1 days and collects up to 29.92" (760mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
What is the snowiest month in Hillsboro?
The month with the most snowfall is January, when snow falls for 9.6 days and typically aggregates up to 4.76" (121mm) of snow.
How much does it snow?
Throughout the year, there are 30.7 snowfall days, and 15" (381mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4h of sunshine.
What is the month with the lowest UV index?
With an average maximum UV index of 1, January is the month with the lowest UV index.
What is the driest month?
February and December are months with the least rain when the rain falls for 4.6 days and typically aggregates up to 1.38" (35mm) of rain.
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 CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month?
May is the month with the most rainfall. Rain falls for 18.3 days and accumulates 4.29" (109mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 6min of daylight.
What is the month with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest?
July is the month when Hillsboro's temperatures reach their peak, with averages of 82.4°F (28°C) and lows of 65.3°F (18.5°C).
What is the most humid month?
July is the most humid month, with an average relative humidity of 83%.
What month has the most sunshine?
With an average of 10h of sunshine, July has the most sunshine of the year.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days in Hillsboro?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Hillsboro.
Average temperature
Hillsboro, IA
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.7°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 (17.4°F).
Average pressure
Hillsboro, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Hillsboro, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.9mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity
Hillsboro, IA
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Hillsboro, IA
- Average rainfall in January:
1.42" - Average rainfall in February:
1.38" - Average rainfall in March:
2.2" - Average rainfall in April:
3.27" - Average rainfall in May:
4.29" - Average rainfall in June:
4.17"
The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and December (1.38").
Average rainfall days
Hillsboro, IA
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
13 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.6 days).
Average snowfall
Hillsboro, IA
The month with the highest snowfall is January (4.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Hillsboro, IA
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 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:
0.4 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
6 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Hillsboro, IA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days
Hillsboro, IA
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
18 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (10.6 days).
Average UV index
Hillsboro, IA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Hillsboro, IA
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility
Hillsboro, IA
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).
Hillsboro, Iowa, USA
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