Climate and monthly weather forecast
Grantsburg, WI

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Weather in January

January, the same as December, in Grantsburg, Wisconsin, is another subzero cold winter month, with an average temperature fluctuating between 18°F (-7.8°C) and 4.8°F (-15.1°C). January, with an average high of 18°F (-7.8°C) and a low of 4.8°F (-15.1°C), signifies the coldest month of the year. Weather in January »

Weather in February

February, the last month of the winter in Grantsburg, is also a subzero cold month, with an average temperature varying between 8.1°F (-13.3°C) and 21.9°F (-5.6°C). As Grantsburg, Wisconsin, steps into February, the average high-temperature holds at a still freezing cold 21.9°F (-5.6°C), hinting at a minor fluctuation from the prior month. Weather in February »

Weather in March

March, the first month of the spring in Grantsburg, is an icy month, with an average temperature fluctuating between 22.8°F (-5.1°C) and 36.9°F (2.7°C). The changeover to March signals a significant increase in the average high-temperature, rising from a subzero cold 21.9°F (-5.6°C) in February to a wintry 36.9°F (2.7°C). Weather in March »

Weather in April

April in Grantsburg, Wisconsin, is a fresh spring month, with an average temperature fluctuating between 34.3°F (1.3°C) and 50.4°F (10.2°C). April brings an increase in the average high-temperature, progressing from a wintry 36.9°F (2.7°C) in March to a fresh 50.4°F (10.2°C). Weather in April »

Weather in May

May, the last month of the spring in Grantsburg, is an enjoyable month, with temperature in the range of an average high of 64.8°F (18.2°C) and an average low of 46°F (7.8°C). May indicates a noticeable escalation in the average high-temperature, moving up from a cool 50.4°F (10.2°C) in April to an enjoyable 64.8°F (18.2°C). Weather in May »

Weather in June

June, the first month of the summer in Grantsburg, is a warm month, with an average temperature ranging between max 73.6°F (23.1°C) and min 55°F (12.8°C). The commencement of June sees a minor shift in the average high-temperature, moving from a comfortable 64.8°F (18.2°C) in May to a warm 73.6°F (23.1°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Grantsburg, Wisconsin, with an average temperature ranging between max 78.8°F (26°C) and min 59.7°F (15.4°C). With average high and low temperatures of 78.8°F (26°C) and 59.7°F (15.4°C) respectively, July is Grantsburg's warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Grantsburg, Wisconsin, with an average temperature fluctuating between 76.8°F (24.9°C) and 57.7°F (14.3°C). August experiences an average high-temperature of a still warm 76.8°F (24.9°C), barely different from July's 78.8°F (26°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Grantsburg, Wisconsin, with an average temperature fluctuating between 69.3°F (20.7°C) and 50.7°F (10.4°C). September ushers in a minor alteration in Grantsburg's climate, with the average high-temperature moving from August's moderately hot 76.8°F (24.9°C) to a pleasant 69.3°F (20.7°C). Weather in September »

Weather in October

October, like September, in Grantsburg, Wisconsin, is a cool autumn month, with an average temperature varying between 53.1°F (11.7°C) and 39°F (3.9°C). As Grantsburg transitions into October, the average high-temperature shows a marked reduction, decreasing from a pleasant 69.3°F (20.7°C) in September to a fresh 53.1°F (11.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Grantsburg, is also a wintry month, with an average temperature ranging between max 38.1°F (3.4°C) and min 26.1°F (-3.3°C). As November arrives, a noticeable drop in the average high-temperature is witnessed, moving from a fresh 53.1°F (11.7°C) in October to a wintry 38.1°F (3.4°C). Weather in November »

Weather in December

December, the first month of the winter in Grantsburg, is still a freezing cold month, with an average temperature ranging between max 23.4°F (-4.8°C) and min 13.1°F (-10.5°C). The arrival of December brings a significant change in Grantsburg's weather, with average high-temperatures dropping from November's icy 38.1°F (3.4°C) to a freezing cold 23.4°F (-4.8°C). Weather in December »
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

Grantsburg experiences its lowest temperatures in January, with an average peak of 18°F (-7.8°C) and a low of 4.8°F (-15.1°C).

What is the most humid month?

With an average relative humidity of 91%, January is the most humid month.

What is the driest month?

January is the month with the least rainfall. Rain falls for 2.8 days and accumulates 0.55" (14mm) of precipitation.

How much does it rain?

Throughout the year, there are 124.6 rainfall days, and 21.65" (550mm) of precipitation is accumulated.

When does it snow?

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

How much does it snow?

Throughout the year, there are 70.6 snowfall days, and 23.9" (607mm) of snow is accumulated.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 2.8h of sunshine.

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 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 are the least humid months in Grantsburg?

April and May, with an average relative humidity of 74%, are the least humid months.

What is the wettest month?

The month with the most rainfall is June, when the rain falls for 16.7 days and typically aggregates up to 3.39" (86mm) of precipitation.

When it does not snow?

In Grantsburg, snow does not fall in June through September.

When are the longest days?

June has the longest days of the year, with an average of 15h and 42min of daylight.

What month is the hottest?

During the warmest month in Grantsburg, July, temperatures average a high of 78.8°F (26°C) and a low of 59.7°F (15.4°C).

What month has the most sunshine?

With an average of 10h of sunshine, July has the most sunshine of the year.

When is the highest UV index?

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

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 14.1 days and typically aggregates up to 5.75" (146mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

Average temperature
Grantsburg, WI

Average temperature - Grantsburg, WI

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18°F).

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).

Average pressure
Grantsburg, WI

Average pressure - Grantsburg, WI

The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed
Grantsburg, WI

Average wind speed - Grantsburg, WI

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity
Grantsburg, WI

Average humidity - Grantsburg, WI

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (74%).

Average rainfall
Grantsburg, WI

Average rainfall - Grantsburg, WI

The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days
Grantsburg, WI

Average rainfall days - Grantsburg, WI

The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is January (2.8 days).

Average snowfall
Grantsburg, WI

Average snowfall - Grantsburg, WI

The month with the highest snowfall is December (5.75").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Grantsburg, WI

Average snowfall days - Grantsburg, WI

The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Grantsburg, WI

Average daylight / Average sunshine - Grantsburg, WI

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days
Grantsburg, WI

Average sunshine days - Grantsburg, WI

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index
Grantsburg, WI

Average UV index - Grantsburg, 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
Grantsburg, WI

Average visibility - Grantsburg, WI

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

Grantsburg, Wisconsin, USA

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