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Now · 2:29 PM

Fontana-on-Geneva Lake Weather & Hourly Forecast

United States · Wisconsin · 53125

73°F

Overcast

Feels like: 73°F

💧 Humidity 68% 🌡 Pressure 30.30 inHg 💨 Wind 7 mph 👁 Visibility 21.6 mi ☁ Clouds 97% ☀️ UV index 4.9 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Fontana-on-Geneva Lake

Today

3:00 PM

Mostly cloudy

73° 💧 None 💨 7 mph H 68%30.27 inHg

6:00 PM

Overcast

69° 💧 None 💨 8 mph H 75%30.24 inHg

9:00 PM

Mostly cloudy night

64° 💧 0.000 in 💨 8 mph H 85%30.30 inHg

Tomorrow

12:00 AM

Mostly clear night

63° 💧 0.000 in 💨 6 mph H 91%30.24 inHg

3:00 AM

Overcast night

63° 💧 0.202 in 💨 4 mph H 96%30.21 inHg

6:00 AM

Moderate rain

65° 💧 0.708 in 💨 3 mph H 98%30.18 inHg

9:00 AM

Light rain

67° 💧 0.047 in 💨 2 mph H 96%30.18 inHg

12:00 PM

Overcast

73° 💧 0.003 in 💨 4 mph H 85%30.18 inHg

3:00 PM

Overcast

77° 💧 0.018 in 💨 4 mph H 77%30.15 inHg

6:00 PM

Light rain

69° 💧 0.007 in 💨 8 mph H 92%30.18 inHg

9:00 PM

Overcast night

66° 💧 0.000 in 💨 10 mph H 89%30.24 inHg

Friday

12:00 AM

Overcast night

64° 💧 None 💨 8 mph H 80%30.27 inHg

3:00 AM

Mostly cloudy night

62° 💧 None 💨 7 mph H 89%30.24 inHg

6:00 AM

Clear night

61° 💧 None 💨 8 mph H 93%30.24 inHg

9:00 AM

Sunny

66° 💧 None 💨 8 mph H 81%30.27 inHg

12:00 PM

Mostly cloudy

71° 💧 None 💨 12 mph H 67%30.24 inHg

Today

3:00 PM

Mostly cloudy

73° 💧 None 💨 7 mph H 68%30.27 inHg

4:00 PM

Mostly cloudy

72° 💧 None 💨 8 mph H 70%30.27 inHg

5:00 PM

Mostly cloudy

71° 💧 None 💨 8 mph H 71%30.27 inHg

6:00 PM

Overcast

69° 💧 None 💨 8 mph H 75%30.24 inHg

7:00 PM

Overcast

67° 💧 None 💨 9 mph H 80%30.27 inHg

8:00 PM

Overcast night

66° 💧 None 💨 9 mph H 83%30.27 inHg

9:00 PM

Mostly cloudy night

64° 💧 0.000 in 💨 8 mph H 85%30.30 inHg

10:00 PM

Mostly clear night

63° 💧 0.000 in 💨 7 mph H 88%30.27 inHg

11:00 PM

Overcast night

63° 💧 None 💨 6 mph H 91%30.27 inHg

Tomorrow

12:00 AM

Mostly clear night

63° 💧 None 💨 6 mph H 91%30.24 inHg

1:00 AM

Partly cloudy night

63° 💧 None 💨 4 mph H 94%30.24 inHg

2:00 AM

Overcast night

63° 💧 0.000 in 💨 5 mph H 95%30.21 inHg

3:00 AM

Overcast night

63° 💧 0.001 in 💨 4 mph H 96%30.21 inHg

4:00 AM

Light rain

63° 💧 0.077 in 💨 3 mph H 96%30.18 inHg

5:00 AM

Moderate rain

64° 💧 0.125 in 💨 5 mph H 98%30.18 inHg

6:00 AM

Moderate rain

65° 💧 0.139 in 💨 3 mph H 98%30.18 inHg

7:00 AM

Thunderstorms

65° 💧 0.217 in 💨 2 mph H 98%30.18 inHg

8:00 AM

Severe thunderstorms

65° 💧 0.352 in 💨 1 mph H 98%30.21 inHg

9:00 AM

Light rain

67° 💧 0.039 in 💨 2 mph H 96%30.18 inHg

10:00 AM

Light rain

70° 💧 0.008 in 💨 3 mph H 91%30.18 inHg

11:00 AM

Overcast

71° 💧 0.000 in 💨 4 mph H 89%30.18 inHg

12:00 PM

Overcast

73° 💧 0.001 in 💨 4 mph H 85%30.18 inHg

1:00 PM

Overcast

76° 💧 0.001 in 💨 3 mph H 79%30.18 inHg

2:00 PM

Overcast

76° 💧 0.001 in 💨 4 mph H 77%30.15 inHg

3:00 PM

Overcast

77° 💧 0.002 in 💨 4 mph H 77%30.15 inHg

4:00 PM

Light rain

76° 💧 0.004 in 💨 7 mph H 78%30.15 inHg

5:00 PM

Light rain

72° 💧 0.012 in 💨 10 mph H 89%30.15 inHg

6:00 PM

Light rain

69° 💧 0.005 in 💨 8 mph H 92%30.18 inHg

7:00 PM

Overcast

68° 💧 0.002 in 💨 8 mph H 91%30.18 inHg

8:00 PM

Overcast night

67° 💧 0.000 in 💨 9 mph H 91%30.21 inHg

9:00 PM

Overcast night

66° 💧 None 💨 10 mph H 89%30.24 inHg

10:00 PM

Overcast night

65° 💧 0.000 in 💨 10 mph H 86%30.24 inHg

11:00 PM

Overcast night

64° 💧 None 💨 9 mph H 81%30.24 inHg

Friday

12:00 AM

Overcast night

64° 💧 None 💨 8 mph H 80%30.27 inHg

1:00 AM

Mostly cloudy night

64° 💧 None 💨 7 mph H 80%30.27 inHg

2:00 AM

Partly cloudy night

64° 💧 None 💨 7 mph H 83%30.24 inHg

3:00 AM

Mostly cloudy night

62° 💧 None 💨 7 mph H 89%30.24 inHg

4:00 AM

Mostly clear night

61° 💧 None 💨 8 mph H 92%30.24 inHg

5:00 AM

Partly cloudy night

61° 💧 None 💨 8 mph H 93%30.24 inHg

6:00 AM

Clear night

61° 💧 None 💨 8 mph H 93%30.24 inHg

7:00 AM

Sunny

61° 💧 None 💨 8 mph H 90%30.27 inHg

8:00 AM

Sunny

63° 💧 None 💨 8 mph H 85%30.27 inHg

9:00 AM

Sunny

66° 💧 None 💨 8 mph H 81%30.27 inHg

10:00 AM

Mostly sunny

69° 💧 None 💨 13 mph H 73%30.27 inHg

11:00 AM

Mostly sunny

70° 💧 None 💨 13 mph H 69%30.27 inHg

12:00 PM

Mostly cloudy

71° 💧 None 💨 12 mph H 67%30.24 inHg

1:00 PM

Mostly sunny

71° 💧 None 💨 12 mph H 65%30.24 inHg

2:00 PM

Mostly cloudy

71° 💧 None 💨 11 mph H 66%30.21 inHg

3:00 PM

Overcast

70° 💧 None 💨 12 mph H 68%30.18 inHg

4:00 PM

Overcast

70° 💧 None 💨 12 mph H 69%30.18 inHg

5:00 PM

Overcast

68° 💧 None 💨 11 mph H 72%30.15 inHg

6:00 PM

Overcast

67° 💧 None 💨 12 mph H 75%30.15 inHg

7:00 PM

Light rain

65° 💧 0.011 in 💨 9 mph H 83%30.15 inHg

8:00 PM

Overcast night

64° 💧 0.003 in 💨 11 mph H 84%30.15 inHg

9:00 PM

Overcast night

64° 💧 None 💨 10 mph H 83%30.15 inHg

10:00 PM

Overcast night

65° 💧 0.000 in 💨 10 mph H 80%30.12 inHg

11:00 PM

Overcast night

66° 💧 0.000 in 💨 10 mph H 79%30.09 inHg

Saturday

12:00 AM

Overcast night

66° 💧 0.000 in 💨 10 mph H 80%30.09 inHg

1:00 AM

Overcast night

66° 💧 0.000 in 💨 10 mph H 79%30.06 inHg

2:00 AM

Overcast night

66° 💧 None 💨 12 mph H 76%30.03 inHg

3:00 AM

Light rain

64° 💧 0.020 in 💨 12 mph H 83%30.03 inHg

4:00 AM

Light rain

63° 💧 0.008 in 💨 11 mph H 88%30.00 inHg

5:00 AM

Moderate rain

63° 💧 0.204 in 💨 10 mph H 94%30.00 inHg

6:00 AM

Moderate rain

62° 💧 0.190 in 💨 10 mph H 95%29.97 inHg

7:00 AM

Light rain

62° 💧 0.090 in 💨 12 mph H 96%29.97 inHg

10:00 AM

Overcast

74° 💧 None 💨 10 mph H 91%29.85 inHg

1:00 PM

Overcast

81° 💧 None 💨 11 mph H 73%29.83 inHg

4:00 PM

Light rain

79° 💧 None 💨 9 mph H 82%29.80 inHg

7:00 PM

Light rain

70° 💧 None 💨 11 mph H 98%29.85 inHg

10:00 PM

Overcast night

64° 💧 None 💨 12 mph H 97%29.91 inHg

Sunday

1:00 AM

Light rain

63° 💧 None 💨 12 mph H 96%29.94 inHg

4:00 AM

Overcast night

62° 💧 None 💨 11 mph H 95%29.94 inHg

7:00 AM

Mostly cloudy

61° 💧 None 💨 11 mph H 92%30.00 inHg

10:00 AM

Overcast

64° 💧 None 💨 14 mph H 81%30.03 inHg

1:00 PM

Overcast

68° 💧 None 💨 15 mph H 68%30.03 inHg

4:00 PM

Overcast

65° 💧 None 💨 13 mph H 75%30.03 inHg

7:00 PM

Overcast night

63° 💧 None 💨 11 mph H 76%30.03 inHg

10:00 PM

Light rain

61° 💧 None 💨 10 mph H 92%30.06 inHg

Monday

1:00 AM

Heavy rain

60° 💧 None 💨 13 mph H 95%30.03 inHg

4:00 AM

Moderate rain

59° 💧 None 💨 13 mph H 97%30.03 inHg

7:00 AM

Heavy rain

59° 💧 None 💨 14 mph H 97%30.03 inHg

10:00 AM

Moderate rain

58° 💧 None 💨 13 mph H 95%30.09 inHg

1:00 PM

Overcast

58° 💧 None 💨 16 mph H 90%30.06 inHg

4:00 PM

Overcast

60° 💧 None 💨 15 mph H 70%30.06 inHg

7:00 PM

Overcast night

59° 💧 None 💨 14 mph H 78%30.09 inHg

10:00 PM

Overcast night

60° 💧 None 💨 14 mph H 75%30.12 inHg

Tuesday

1:00 AM

Overcast night

59° 💧 None 💨 12 mph H 80%30.12 inHg

7:00 AM

Overcast

60° 💧 None 💨 13 mph H 84%30.12 inHg

1:00 PM

Partly cloudy

58° 💧 None 💨 12 mph H 87%30.15 inHg

7:00 PM

Overcast night

62° 💧 None 💨 13 mph H 81%30.18 inHg

Wednesday

1:00 AM

Light rain

60° 💧 None 💨 8 mph H 94%30.18 inHg

7:00 AM

Light rain

60° 💧 None 💨 8 mph H 97%30.21 inHg

1:00 PM

Overcast

60° 💧 None 💨 6 mph H 98%30.27 inHg

7:00 PM

Overcast night

67° 💧 None 💨 6 mph H 82%30.27 inHg

Thursday

1:00 AM

Overcast night

64° 💧 None 💨 6 mph H 90%30.24 inHg

7:00 AM

Overcast

62° 💧 None 💨 4 mph H 97%30.21 inHg

1:00 PM

Overcast

62° 💧 None 💨 6 mph H 99%30.18 inHg

7:00 PM

Overcast night

73° 💧 None 💨 7 mph H 79%30.12 inHg

Friday

1:00 AM

Overcast night

72° 💧 None 💨 8 mph H 90%30.03 inHg

7:00 AM

Mostly cloudy

66° 💧 None 💨 10 mph H 97%30.03 inHg

1:00 PM

Overcast

66° 💧 None 💨 6 mph H 100%30.06 inHg

7:00 PM

Overcast night

71° 💧 None 💨 9 mph H 80%30.09 inHg

Saturday

1:00 AM

Clear night

67° 💧 None 💨 7 mph H 83%30.09 inHg

7:00 AM

Mostly sunny

62° 💧 None 💨 7 mph H 96%30.12 inHg

1:00 PM

Sunny

60° 💧 None 💨 7 mph H 98%30.15 inHg

7:00 PM

Partly cloudy night

71° 💧 None 💨 6 mph H 67%30.15 inHg

Sunday

1:00 AM

Partly cloudy night

66° 💧 None 💨 5 mph H 82%30.12 inHg

7:00 AM

Partly cloudy

59° 💧 None 💨 1 mph H 98%30.12 inHg

1:00 PM

Overcast

57° 💧 None 💨 3 mph H 99%30.12 inHg

7:00 PM

Partly cloudy night

71° 💧 None 💨 4 mph H 65%30.09 inHg

Monday

1:00 AM

Clear night

65° 💧 None 💨 2 mph H 78%30.03 inHg

7:00 AM

Sunny

59° 💧 None 💨 0 mph H 87%30.06 inHg

1:00 PM

Mostly sunny

55° 💧 None 💨 2 mph H 99%30.09 inHg

7:00 PM

Mostly cloudy night

72° 💧 None 💨 5 mph H 60%30.06 inHg

Tuesday

1:00 AM

Mostly clear night

65° 💧 None 💨 6 mph H 85%30.00 inHg

7:00 AM

Mostly sunny

59° 💧 None 💨 4 mph H 89%30.00 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 4 mph H 84%30.00 inHg

7:00 PM

Partly cloudy night

73° 💧 None 💨 5 mph H 57%29.97 inHg

Wednesday

1:00 AM

Mostly clear night

66° 💧 None 💨 3 mph H 79%29.91 inHg

7:00 AM

Mostly sunny

62° 💧 None 💨 4 mph H 83%29.94 inHg

1:00 PM

Overcast

57° 💧 None 💨 3 mph H 91%29.97 inHg

7:00 PM

Partly cloudy night

75° 💧 None 💨 7 mph H 55%29.97 inHg

Thursday

1:00 AM

Clear night

66° 💧 None 💨 8 mph H 80%29.97 inHg

In Fontana-on-Geneva Lake and, more broadly, across the state of Wisconsin: The late afternoon will be mostly cloudy with mild temperatures ranging from 60 to 71 degrees Fahrenheit. Winds will be light, coming from the east at no more than 6 mph, with occasional gusts up to 12 mph. As evening approaches, skies are expected to remain mostly cloudy, and no precipitation is forecasted. Temperatures will gradually cool, but conditions will stay comfortable throughout the night. Overall, it should be a calm and mild evening with gentle breezes and no significant weather concerns.

15-Day Weather Outlook for Fontana-on-Geneva Lake

TomorrowTomorrow

Thunderstorms 77°/63° 💧 None 💨 10 mph

Friday, Sep 18Fri Sep 18

Overcast 71°/61° 💧 None 💨 13 mph

Saturday, Sep 19Sat Sep 19

Light rain 81°/62° 💧 0.181 in 💨 12 mph

Sunday, Sep 20Sun Sep 20

Light rain 68°/61° 💧 0.053 in 💨 15 mph

Monday, Sep 21Mon Sep 21

Heavy rain 60°/58° 💧 1.731 in 💨 16 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 62°/58° 💧 0.004 in 💨 13 mph

Wednesday, Sep 23Wed Sep 23

Light rain 67°/60° 💧 0.123 in 💨 8 mph

Thursday, Sep 24Thu Sep 24

Overcast 73°/62° 💧 0.372 in 💨 7 mph

Friday, Sep 25Fri Sep 25

Overcast 72°/66° 💧 0.189 in 💨 10 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 71°/60° 💧 0.005 in 💨 7 mph

Sunday, Sep 27Sun Sep 27

Partly cloudy 71°/57° 💧 0.003 in 💨 5 mph

Monday, Sep 28Mon Sep 28

Mostly cloudy 72°/55° 💧 0.001 in 💨 5 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 73°/59° 💧 0.001 in 💨 6 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 75°/57° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Sunny 66°/66° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Fontana-on-Geneva Lake

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Fontana-on-Geneva Lake

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 3:00 PM

PM2.5 Fine particles Good 5,1µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 5,3µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 51,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 9,8µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Fontana-on-Geneva Lake

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,9Moderate 😊Good

Tomorrow UV 6,0High 🙂Fair

Friday UV 5,3Moderate 😐Moderate

Saturday UV 3,0Moderate 🙂Fair

Sunday UV 4,0Moderate 🙂Fair

Monday UV 5,0Moderate —Unavailable

Tuesday UV 4,0Moderate —Unavailable

Hourly UV index today

3:00 PMUV 3,4 4:00 PMUV 1,4 5:00 PMUV 0,8 6:00 PMUV 0,2 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Fontana-on-Geneva Lake

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · FONTANA-ON-GENEVA LAKE, WISCONSIN

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 12:00 AM–1:00 AM.

76/100Best-hour score

BEST TIME TONIGHT 12:00 AM–1:00 AM Astronomical darkness: 8:38 PM–5:01 AM

☁ Cloud cover 30% Real hourly forecast for the best viewing hour.

☾ Moonlight 29% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 42° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min57%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Fontana-on-Geneva Lake were last refreshed today at 2:29 PM. The current forecast period extends through 18/09/2026 at 12:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.