Expand
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, the same as December, in Lannon, Wisconsin, is a freezing cold winter month, with temperature in the range of an average low of 14.4°F (-9.8°C) and an average high of 25.2°F (-3.8°C). Lannon's coldest temperatures are experienced in January, with average high temperatures of 25.2°F (-3.8°C) and lows of 14.4°F (-9.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Lannon, Wisconsin, with an average temperature fluctuating between 28°F (-2.2°C) and 17.2°F (-8.2°C). Lannon observes a minor difference in average high-temperatures between January's 25.2°F (-3.8°C) and February's 28°F (-2.2°C). Weather in February »
Weather in March
March, the first month of the spring in Lannon, is a wintry month, with an average temperature fluctuating between 39.4°F (4.1°C) and 28.2°F (-2.1°C). Lannon in March experiences an increase in the average high-temperature, moving from February's subzero cold 28°F (-2.2°C) to a wintry 39.4°F (4.1°C). Weather in March »
Weather in April
April in Lannon, Wisconsin, is a cool spring month, with an average temperature varying between 37°F (2.8°C) and 50.2°F (10.1°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a wintry 39.4°F (4.1°C) to a fresh 50.2°F (10.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Lannon, Wisconsin, with an average temperature ranging between min 47.1°F (8.4°C) and max 62.1°F (16.7°C). Entering May, Lannon sees a temperature rise, with the average high-temperature advancing from April's cool 50.2°F (10.1°C) to an enjoyable 62.1°F (16.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Lannon, Wisconsin, with an average temperature ranging between min 56.3°F (13.5°C) and max 71.2°F (21.8°C). Lannon in June experiences an increase in the average high-temperature, moving from May's comfortable 62.1°F (16.7°C) to a pleasant 71.2°F (21.8°C). Weather in June »
Weather in July
July in Lannon, Wisconsin, is a warm summer month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 63.1°F (17.3°C). July, having an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 63.1°F (17.3°C), is the warmest month. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Lannon, Wisconsin, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 61.9°F (16.6°C). Lannon marks the onset of August with an average high-temperature of a still warm 76.6°F (24.8°C), a subtle shift from July's 77.5°F (25.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Lannon, Wisconsin, with an average temperature varying between 70°F (21.1°C) and 55.4°F (13°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 76.6°F (24.8°C) in August to an agreeable 70°F (21.1°C). Weather in September »
Weather in October
October, the same as September, in Lannon, Wisconsin, is another refreshing autumn month, with an average temperature ranging between min 43.7°F (6.5°C) and max 56.8°F (13.8°C). In Lannon, entering October brings a temperature decrement, reducing from September's agreeable 70°F (21.1°C) to a refreshing 56.8°F (13.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Lannon, is another chilly month, with an average temperature fluctuating between 32.4°F (0.2°C) and 43.3°F (6.3°C). Lannon's progression into November includes a drop in the average high-temperature, from a moderate 56.8°F (13.8°C) in October to a chilly 43.3°F (6.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Lannon, Wisconsin, with an average temperature ranging between min 22.8°F (-5.1°C) and max 31.5°F (-0.3°C). Onset of December comes with a temperature decline, the average high falling from a chilly 43.3°F (6.3°C) in November to a freezing cold 31.5°F (-0.3°C). Weather in December »
Updated: Feb 14, 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 in Lannon?
With average high temperatures of 25.2°F (-3.8°C) and lows of 14.4°F (-9.8°C), January is the coldest month.
What is the most humid month in Lannon?
With an average relative humidity of 87%, January is the most humid month.
How many days does it rain in Lannon?
In Lannon, Wisconsin, during the entire year, the rain falls for 139.2 days and collects up to 25.28" (642mm) of precipitation.
When does it snow in Lannon?
January through April, October through December are months with snowfall in Lannon, Wisconsin.
When does it snow the most in Lannon?
The month with the most snowfall in Lannon, Wisconsin, is January, when snow falls for 12.6 days and typically aggregates up to 4.02" (102mm) of snow.
How many days does it snow in Lannon?
Throughout the year, in Lannon, there are 48.9 snowfall days, and 15.35" (390mm) of snow is accumulated.
What is the month with the least sunshine in Lannon?
January has the least sunshine of the year, with an average of 3.6h of sunshine.
What are the months with the lowest UV index in Lannon?
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the driest month in Lannon?
February is the month with the least rainfall. Rain falls for 4.1 days and accumulates 1.02" (26mm) of precipitation.
When is Daylight Saving Time (DST) in Lannon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Lannon, Wisconsin, 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 in Lannon?
The month with the most rainfall in Lannon is May, when the rain falls for 17 days and typically aggregates up to 3.11" (79mm) of precipitation.
When it does not snow in Lannon?
In Lannon, Wisconsin, snow does not fall in May through September.
When are the longest days in Lannon?
June has the longest days of the year in Lannon, Wisconsin, with an average of 15h and 18min of daylight.
What part of the year is the hottest in Lannon?
July proves to be the warmest month in Lannon, recording an average peak temperature of 77.5°F (25.3°C) and a minimum temperature of 63.1°F (17.3°C).
What month has the most sunshine in Lannon?
The month with the most sunshine is July, with an average of 10.5h of sunshine.
When is the highest UV index in Lannon?
July is the month with the highest UV index in Lannon, with an average maximum UV index of 6.
What is the least humid month in Lannon?
With an average relative humidity of 76%, October is the least humid month in Lannon.
What is the month with the shortest days in Lannon?
December has the shortest days of the year in Lannon, Wisconsin, with an average of 9h and 6min of daylight.
Average temperature
Lannon, WI
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure
Lannon, WI
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Lannon, WI
- Average wind speed in January:
11.1mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
7mph - Average wind speed in August:
7mph - Average wind speed in September:
8.2mph - Average wind speed in October:
9.7mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.4mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Lannon, WI
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Lannon, WI
- Average rainfall in January:
1.3" - Average rainfall in February:
1.02" - Average rainfall in March:
1.5" - Average rainfall in April:
2.83" - Average rainfall in May:
3.11" - Average rainfall in June:
2.95"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days
Lannon, WI
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
Lannon, WI
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Lannon, WI
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
11 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
2.8 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:
0.6 days - Average snowfall days in November:
4.7 days - Average snowfall days in December:
10.9 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Lannon, WI
- Average daylight in January:
9h and 2min - 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 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Lannon, WI
- Average sunshine days in January:
14.5 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
12 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
14 days - Average sunshine days in November:
15.6 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is December (15.9 days).
The month with the least sunshine days is April (12 days).
Average UV index
Lannon, WI
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Lannon, WI
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility
Lannon, WI
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lannon, Wisconsin, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location