Climate and monthly weather forecastLake Delton, WI
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Lake Delton, Wisconsin, with an average temperature varying between 22.5°F (-5.3°C) and 10°F (-12.2°C). January stands out as Lake Delton's coldest month, with an average high-temperature of 22.5°F (-5.3°C) and a low-temperature of 10°F (-12.2°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Lake Delton, Wisconsin, with an average temperature ranging between min 13.3°F (-10.4°C) and max 26.1°F (-3.3°C). Lake Delton experiences a recorded average high-temperature of a still subzero cold 26.1°F (-3.3°C) in February, closely aligned with January's 22.5°F (-5.3°C). Weather in February »Weather in March
The first month of the spring, March, is a cold month in Lake Delton, Wisconsin, with an average temperature ranging between min 25.7°F (-3.5°C) and max 40.5°F (4.7°C). The changeover to March signals a significant increase in the average high-temperature, rising from a freezing cold 26.1°F (-3.3°C) in February to an icy 40.5°F (4.7°C). Weather in March »Weather in April
April in Lake Delton, Wisconsin, is a fresh spring month, with an average temperature fluctuating between 36.3°F (2.4°C) and 52.5°F (11.4°C). With the onset of April, the average high-temperature slightly shifts from March's icy 40.5°F (4.7°C) to a cool 52.5°F (11.4°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Lake Delton, Wisconsin, with an average temperature varying between 47.8°F (8.8°C) and 65.8°F (18.8°C). In Lake Delton, the average high-temperature in May rises, from a fresh 52.5°F (11.4°C) in April, to an enjoyable 65.8°F (18.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Lake Delton, Wisconsin, with an average temperature ranging between max 74.5°F (23.6°C) and min 56.8°F (13.8°C). With the onset of June, Lake Delton's average high-temperature sees a modest rise, moving from May's refreshing 65.8°F (18.8°C) to a warm 74.5°F (23.6°C). Weather in June »Weather in July
July, like June, in Lake Delton, Wisconsin, is a moderately hot summer month, with an average temperature fluctuating between 79.2°F (26.2°C) and 60.8°F (16°C). July registers as the month with the highest average temperatures, reaching 79.2°F (26.2°C) at its peak and 60.8°F (16°C) at the lowest. Weather in July »Weather in August
August, the last month of the summer in Lake Delton, is also a moderately hot month, with an average temperature varying between 77.5°F (25.3°C) and 58.6°F (14.8°C). The shift into August uncovers an average high-temperature of a still warm 77.5°F (25.3°C), subtly different from the previous month. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Lake Delton, Wisconsin, with an average temperature ranging between min 51.1°F (10.6°C) and max 70.9°F (21.6°C). With the onset of September, Lake Delton experiences a modest temperature adjustment, with the average high-temperature gently receding from a moderately hot 77.5°F (25.3°C) in August to an agreeable 70.9°F (21.6°C). Weather in September »Weather in October
October, the same as September, in Lake Delton, Wisconsin, is a moderate autumn month, with an average temperature fluctuating between 40.6°F (4.8°C) and 56.3°F (13.5°C). The arrival of October is marked by a notable decrease in high-temperatures, falling from an agreeable 70.9°F (21.6°C) in September to a mild 56.3°F (13.5°C). Weather in October »Weather in November
November, the last month of the autumn in Lake Delton, is another cold month, with an average temperature fluctuating between 29.7°F (-1.3°C) and 41.7°F (5.4°C). November is marked by a significant decrease, with the average high-temperature retreating from a mild 56.3°F (13.5°C) in October to a wintry 41.7°F (5.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Lake Delton, Wisconsin, with an average temperature varying between 28.8°F (-1.8°C) and 18.5°F (-7.5°C). In December, the average high-temperature decreases from an icy 41.7°F (5.4°C) in November to a freezing cold 28.8°F (-1.8°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Lake Delton, WI
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.5°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 (10°F).
Average pressure
Lake Delton, WI
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.11"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:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.09"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Lake Delton, WI
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.2mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Lake Delton, WI
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Lake Delton, WI
- Average rainfall in January:
0.31" - Average rainfall in February:
0.39" - Average rainfall in March:
0.51" - Average rainfall in April:
0.83" - Average rainfall in May:
0.98" - Average rainfall in June:
1.18"
- Average rainfall in July:
1.1" - Average rainfall in August:
0.75" - Average rainfall in September:
0.67" - Average rainfall in October:
0.87" - Average rainfall in November:
0.43" - Average rainfall in December:
0.43"
The wettest month (with the highest rainfall) is June (1.18").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days
Lake Delton, WI
- Average rainfall days in January:
3.5 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
7.7 days - Average rainfall days in April:
9.9 days - Average rainfall days in May:
13 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
11.2 days - Average rainfall days in August:
9.4 days - Average rainfall days in September:
7.2 days - Average rainfall days in October:
7.9 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
4.2 days
The month with the highest number of rainy days is June (13.3 days).
The month with the least rainy days is February (2.3 days).
Average snowfall
Lake Delton, WI
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Lake Delton, WI
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.1 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:
1 days - Average snowfall days in November:
4 days - Average snowfall days in December:
10.1 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lake Delton, WI
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
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).
- Average sunshine in January:
3h and 12min - Average sunshine in February:
3h and 30min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 12min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 6min - Average sunshine in November:
4h and 48min - Average sunshine in December:
3h and 42min
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 12min).
Average sunshine days
Lake Delton, WI
- Average sunshine days in January:
20.1 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
19.4 days - Average sunshine days in April:
16.1 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
15.6 days - Average sunshine days in August:
19.1 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
21.7 days - Average sunshine days in December:
21.4 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is June (14.1 days).
Average UV index
Lake Delton, 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 cloud cover
Lake Delton, WI
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Lake Delton, WI
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).





