Climate and monthly weather forecast
Hillsboro, WI

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Weather in January

January, like December, is another subzero cold winter month in Hillsboro, Wisconsin, with an average temperature varying between 9.3°F (-12.6°C) and 22.1°F (-5.5°C). January stands out as Hillsboro's coldest month, with an average high-temperature of 22.1°F (-5.5°C) and a low-temperature of 9.3°F (-12.6°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Hillsboro, Wisconsin, with an average temperature fluctuating between 26.1°F (-3.3°C) and 13.1°F (-10.5°C). Hillsboro experiences a recorded average high-temperature of a still freezing cold 26.1°F (-3.3°C) in February, closely aligned with January's 22.1°F (-5.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a wintry month in Hillsboro, Wisconsin, with an average temperature fluctuating between 40.5°F (4.7°C) and 25.9°F (-3.4°C). March brings with it a considerable temperature increase, with average high-temperatures rising from February's subzero cold 26.1°F (-3.3°C) to an icy 40.5°F (4.7°C). Weather in March »

Weather in April

April is a cool spring month in Hillsboro, Wisconsin, with an average temperature fluctuating between 36°F (2.2°C) and 53.1°F (11.7°C). April brings a rise in the average high-temperature, transitioning from March's icy 40.5°F (4.7°C) to a cool 53.1°F (11.7°C). Weather in April »

Weather in May

May, the last month of the spring in Hillsboro, is an enjoyable month, with an average temperature varying between 47.5°F (8.6°C) and 65.8°F (18.8°C). May's arrival sees a rise in the average high-temperature, jumping from April's fresh 53.1°F (11.7°C) to an enjoyable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Hillsboro, is a warm month, with an average temperature varying between 75.6°F (24.2°C) and 56.5°F (13.6°C). Hillsboro in June shows a temperature shift, moving from an average high of an enjoyable 65.8°F (18.8°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »

Weather in July

July, like June, in Hillsboro, Wisconsin, is another warm summer month, with an average temperature ranging between min 60.8°F (16°C) and max 79.9°F (26.6°C). Hillsboro's July weather, marked by an average high temperature of 79.9°F (26.6°C) and an average low temperature of 60.8°F (16°C), is the warmest in the year. Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Hillsboro, Wisconsin, with temperature in the range of an average low of 58.5°F (14.7°C) and an average high of 78.4°F (25.8°C). The shift into August reveals an average high-temperature of a still warm 78.4°F (25.8°C), closely mirroring July's climate. Weather in August »

Weather in September

September, the first month of the autumn in Hillsboro, is also an agreeable month, with an average temperature ranging between max 71.1°F (21.7°C) and min 51.1°F (10.6°C). The start of September involves a subtle temperature drop, shifting from a warm 78.4°F (25.8°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Hillsboro, Wisconsin, with an average temperature varying between 40.1°F (4.5°C) and 55.9°F (13.3°C). October marks a distinct drop in the average high-temperature, descending from September's agreeable 71.1°F (21.7°C) to a moderate 55.9°F (13.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an icy month in Hillsboro, Wisconsin, with an average temperature fluctuating between 41.5°F (5.3°C) and 28.6°F (-1.9°C). The arrival of November is marked by a notable decrease in high-temperatures, falling from a mild 55.9°F (13.3°C) in October to a wintry 41.5°F (5.3°C). Weather in November »

Weather in December

December, the first month of the winter in Hillsboro, is still a freezing cold month, with temperature in the range of an average low of 17.6°F (-8°C) and an average high of 28°F (-2.2°C). Hillsboro's average high-temperature decreases in December, falling from a cold 41.5°F (5.3°C) in November to a freezing cold 28°F (-2.2°C). Weather in December »
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

The month of January, characterized by an average high of 22.1°F (-5.5°C) and a low of 9.3°F (-12.6°C), is recognized as the coldest.

What is the most humid month?

With an average relative humidity of 90%, January is the most humid month.

What is the driest month?

January is the month with the least rainfall in Hillsboro. Rain falls for 3.5 days and accumulates 1.1" (28mm) of precipitation.

How much does it rain?

Throughout the year, there are 131.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.

When does it snow?

January through May, October through December are months with snowfall.

How much does it snow?

In Hillsboro, during the entire year, snow falls for 50.2 days and aggregates up to 21.69" (551mm) of snow.

What is the month with the least sunshine in Hillsboro?

With an average of 3h of sunshine, January has the least sunshine of the year.

What are the months with the lowest UV index?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

When does it snow the most?

The month with the most snowfall is February, when snow falls for 10.5 days and typically aggregates up to 5.87" (149mm) of snow.

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 least humid month?

The least humid month in Hillsboro is April, with an average relative humidity of 77%.

What is the rainiest month?

June is the month with the most rainfall. Rain falls for 16.9 days and accumulates 4.17" (106mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 15h and 24min of daylight, June has the longest days of the year.

What are the warmest months?

Hillsboro's temperatures tend to reach their peak averages in July, with a high of 79.9°F (26.6°C) and a low of 60.8°F (16°C).

What month has the most sunshine?

July has the most sunshine of the year, with an average of 9.9h of sunshine.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the month with the shortest days?

With an average of 9h and 0min of daylight, December has the shortest days of the year.

Average temperature
Hillsboro, WI

Average temperature - Hillsboro, WI

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (22.1°F).

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

Average pressure
Hillsboro, WI

Average pressure - Hillsboro, WI

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed
Hillsboro, WI

Average wind speed - Hillsboro, WI

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity
Hillsboro, WI

Average humidity - Hillsboro, WI

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).

Average rainfall
Hillsboro, WI

Average rainfall - Hillsboro, WI

The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days
Hillsboro, WI

Average rainfall days - Hillsboro, WI

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (3.5 days).

Average snowfall
Hillsboro, WI

Average snowfall - Hillsboro, WI

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Hillsboro, WI

Average snowfall days - Hillsboro, WI

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Hillsboro, WI

Average daylight / Average sunshine - Hillsboro, WI

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days
Hillsboro, WI

Average sunshine days - Hillsboro, WI

The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.4 days).

Average UV index
Hillsboro, WI

Average UV index - Hillsboro, WI

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average visibility
Hillsboro, WI

Average visibility - Hillsboro, WI

The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).

Hillsboro, Wisconsin, USA

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