World Resorts USA Lake Delton Weather

Lake Delton weather in September

Weather in Lake Delton: September

Average day temperature: 73.0°F
Average night temperature: 56.1°F
Number of sunny days: 15 days
Day length: 11.8 - 13.2 hours
Number of rainy days: 2 days
Precipitation totals: 0.7 in.

Air temperature in September, °F

Show year:
2025
2024
2023

The highest day temperature during September of 2025 was 84°F. At the same time the lowest night temperature was 39°F. Daily and nightly averages during September were 72.8°F and 55.1°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Lake Delton in September is 0.7 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 7.8 mph It makes September one of the least windy months of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 8.2.

Best time for vacation in Lake Delton

Sunniest months:
October 15 days
August 15 days
September 15 days
Warmest months:
July 79.1 °F
August 78.7 °F
June 75.3 °F
Coldest months:
January 24.1 °F
February 26.7 °F
December 30.2 °F
Rainiest months:
June 3 days
May 3 days
March 2 days
Windiest months:
April 10.2 mph
March 9.8 mph
November 9.6 mph

Lake Delton on a weather map

Lake Delton
+27°F
E 16 mph
Feels like: +14°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+75°F
+75°F
+59°F
+70°F
+77°F
+77°F
+70°F
+41°F
+70°F
+55°F
+75°F
+77°F
+55°F
+36°F
24 Hours Forecast
Lake Delton
Local time: 17:58
January 10, saturday
1800
27°F
E
16 mph
2100
23°F
SE
17 mph
January 11, sunday
0000
21°F
SE
17 mph
0300
19°F
SE
17 mph
0600
19°F
SE
17 mph
0900
19°F
SE
13 mph
1200
23°F
SE
11 mph
1500
27°F
E
10 mph
Units of measurement: °C / °F