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Lake Geneva weather in December

Weather in Lake Geneva: December

Average day temperature: 34.5°F
Average night temperature: 29.0°F
Sea water temperature: 36.7°F
Number of sunny days: 7 days
Day length: 9.0 - 9.3 hours
Number of rainy days: 1 day
Precipitation totals: 0.6 in.

Air temperature in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
7
14
21
28
35
42
49
56
Day temperature   
Night temperature

The highest day temperature during December of 2024 was 45°F. At the same time the lowest night temperature was 4°F. Daily and nightly averages during December were 31.5°F and 25.8°F.

Sea water temperature in Lake Geneva in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
28
31
34
37
40
43
46
49

The average sea water temperature in December of 2024 was 32.0°F. The highest and lowest sea temperatures during the month were 32.0°F and 32.0°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
23%
29%
48%

Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
1.0
1.1
1.3
1.2
1.7
1.7
1.0
1.0
1.1
1.3
1.2
1.7
1.7
1.0

Precipitation total value in Lake Geneva in December is 0.6 in. Other months of the year show relatively similar values.

Wind speed in December, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.9
3.8
5.8
7.7
9.6
11.5
13.5
10.8
10.0
8.6
7.6
7.2
8.5
9.2
10.8
11.2
10.7
10.0
9.9
10.8
10.0
8.6
7.6
7.2
8.5
9.2
10.8
11.2
10.7
10.0

The average wind speed value in December is 9.9 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.1
4.7
6.3
7.8
9.4
10.9
5.0
6.3
8.3
9.1
9.0
9.1
7.6
5.8
5.1
4.8
3.6
3.5
5.0
6.3
8.3
9.1
9.0
9.1
7.6
5.8
5.1
4.8
3.6

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 December is: 3.5.

Best time for vacation in Lake Geneva

Sunniest months:
September 15 days
August 14 days
June 12 days
Warmest months:
August 78.6 °F
July 78.4 °F
June 75.0 °F
Warmest sea temp:
August 57.4 °F
October 50.8 °F
July 49.3 °F
Coldest months:
January 26.9 °F
February 29.8 °F
December 34.5 °F
Rainiest months:
April 4 days
May 3 days
June 2 days
Windiest months:
March 11.2 mph
November 10.8 mph
April 10.8 mph

Lake Geneva on a weather map

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24 Hours Forecast
Lake Geneva
Local time: 21:30
April 06, sunday
0000
34°F
S
11 mph
0300
32°F
S
7 mph
0600
28°F
S
5 mph
0900
37°F
S
5 mph
1200
48°F
SE
6 mph
1500
52°F
SE
6 mph
1800
50°F
E
6 mph
2100
45°F
NE
7 mph
Units of measurement: °C / °F