Climate and monthly weather forecastGrantsburg, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Grantsburg, Illinois, is a wintry winter month, with an average temperature ranging between min 27°F (-2.8°C) and max 40.1°F (4.5°C). In Grantsburg, the month of January registers the lowest temperatures, averaging 40.1°F (4.5°C) at the peak and 27°F (-2.8°C) at the lowest. Weather in January »Weather in February
The last month of the winter, February, is a frosty month in Grantsburg, Illinois, with an average temperature varying between 45.1°F (7.3°C) and 30.7°F (-0.7°C). February's onset brings an average high-temperature of a chilly 45.1°F (7.3°C), showing a minute difference from January's 40.1°F (4.5°C). Weather in February »Weather in March
The first month of the spring, March, is a refreshing month in Grantsburg, Illinois, with an average temperature fluctuating between 39.7°F (4.3°C) and 55.8°F (13.2°C). With the beginning of March, Grantsburg's average high-temperature sees an increase, transitioning from a frosty 45.1°F (7.3°C) in February to a mild 55.8°F (13.2°C). Weather in March »Weather in April
April is a comfortable spring month in Grantsburg, Illinois, with an average temperature varying between 66.6°F (19.2°C) and 48.9°F (9.4°C). Grantsburg in April experiences an increase in the average high-temperature, moving from March's moderate 55.8°F (13.2°C) to an enjoyable 66.6°F (19.2°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Grantsburg, Illinois, with an average temperature ranging between max 75.7°F (24.3°C) and min 57.9°F (14.4°C). May's onset witnesses a shift in the average high-temperature, moving from a comfortable 66.6°F (19.2°C) in April to a warm 75.7°F (24.3°C). Weather in May »Weather in June
June, the first month of the summer in Grantsburg, is still a warm month, with an average temperature fluctuating between 85.6°F (29.8°C) and 66.2°F (19°C). As May gives way to June, the average high-temperature displays an increase, moving from 75.7°F (24.3°C) to a still moderately hot 85.6°F (29.8°C). Weather in June »Weather in July
July in Grantsburg, Illinois, is a hot summer month, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 68.5°F (20.3°C). Grantsburg records the warmest temperatures in July, averaging a high of 88°F (31.1°C) and a low of 68.5°F (20.3°C). In July, the heat index is estimated at an extremely hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Grantsburg, Illinois, with an average temperature fluctuating between 86.5°F (30.3°C) and 66.7°F (19.3°C). August's advent presents an average high-temperature of a still hot 86.5°F (30.3°C), indicating a slight variation from the conditions of the previous month. Weather in August »Weather in September
September, the first month of the autumn in Grantsburg, is still a warm month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 60.6°F (15.9°C). The move into September indicates a slight reduction in the average high-temperature, down from August's tropical 86.5°F (30.3°C) to a moderately hot 81.1°F (27.3°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Grantsburg, Illinois, with an average temperature varying between 49.6°F (9.8°C) and 67.8°F (19.9°C). October shows a mild decline in the average high-temperature, falling from September's moderately hot 81.1°F (27.3°C) to a comfortable 67.8°F (19.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Grantsburg, Illinois, with an average temperature fluctuating between 38.8°F (3.8°C) and 54.5°F (12.5°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from an enjoyable 67.8°F (19.9°C) to a cool 54.5°F (12.5°C). Weather in November »Weather in December
December, the first month of the winter in Grantsburg, is still a chilly month, with an average temperature varying between 44.8°F (7.1°C) and 32.7°F (0.4°C). During Grantsburg's transition into December, the average high-temperature lessens, moving from a fresh 54.5°F (12.5°C) in November to a frosty 44.8°F (7.1°C). Weather in December »Updated: Jun 30, 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
Grantsburg witnesses the coldest weather in January, with temperatures averaging a high of 40.1°F (4.5°C) and a low of 27°F (-2.8°C).
In Grantsburg, during the entire year, the rain falls for 118.3 days and collects up to 13.03" (331mm) of precipitation.
January through March, November and December are months with snowfall.
In Grantsburg, Illinois, during the entire year, snow falls for 11 days and aggregates up to 1.57" (40mm) of snow.
January and February, with an average of 4.6h of sunshine, are months with the least sunshine in Grantsburg.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 3.2 days and typically aggregates up to 0.67" (17mm) of snow.
The months with the highest humidity are March and May, with an average relative humidity of 79%.
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.
In Grantsburg, Illinois, snow does not fall in April through October.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the most rainfall is June, when the rain falls for 12.5 days and typically aggregates up to 1.5" (38mm) of precipitation.
June has the longest days of the year in Grantsburg, Illinois, with an average of 14h and 42min of daylight.
June and July, with an average of 10.4h of sunshine, are months with the most sunshine.
With average high temperatures of 88°F (31.1°C) and lows of 68.5°F (20.3°C), July is the warmest month.
September is the month with the least rainfall. Rain falls for 8.3 days and accumulates 0.47" (12mm) of precipitation.
October is the least humid month, with an average relative humidity of 71%.
With an average of 9h and 36min of daylight, December has the shortest days of the year in Grantsburg.
Average temperature
Grantsburg, IL
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure
Grantsburg, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"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:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Grantsburg, IL
- Average wind speed in January:
9mph - Average wind speed in February:
9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.2mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Grantsburg, IL
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Grantsburg, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
1.14" - Average rainfall in March:
1.22" - Average rainfall in April:
1.22" - Average rainfall in May:
1.34" - Average rainfall in June:
1.5"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.3" - Average rainfall in September:
0.47" - Average rainfall in October:
0.98" - Average rainfall in November:
0.91" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days
Grantsburg, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
13.1 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
8.3 days - Average rainfall days in October:
7.5 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).
Average snowfall
Grantsburg, IL
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Grantsburg, IL
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.2 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:
0.1 days - Average snowfall days in November:
1 days - Average snowfall days in December:
1.9 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Grantsburg, IL
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 24min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Grantsburg, IL
- Average sunshine days in January:
21.4 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
16.7 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
15.1 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
19.1 days - Average sunshine days in October:
21.5 days - Average sunshine days in November:
20.8 days - Average sunshine days in December:
21.2 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).
Average UV index
Grantsburg, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Grantsburg, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility
Grantsburg, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
