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Current weather in Koontz Lake is few clouds.

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Weather data for Koontz Lake is updated regularly with the latest available observations and forecasts.

Now · 7:48 PM

Koontz Lake Weather & Hourly Forecast

United States · Indiana · 46574

67°F

Mostly sunny

Feels like: 67°F

💧 Humidity 77% 🌡 Pressure 30.09 inHg 💨 Wind 6 mph 👁 Visibility 18.2 mi ☁ Clouds 31% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Koontz Lake

Today

8:00 PM

Mostly clear night

67° 💧 None 💨 6 mph H 77%30.09 inHg

11:00 PM

Clear night

64° 💧 None 💨 6 mph H 79%30.12 inHg

Tomorrow

2:00 AM

Clear night

60° 💧 None 💨 5 mph H 89%30.15 inHg

5:00 AM

Clear night

59° 💧 None 💨 5 mph H 94%30.15 inHg

8:00 AM

Sunny

63° 💧 None 💨 5 mph H 88%30.21 inHg

11:00 AM

Sunny

73° 💧 None 💨 8 mph H 67%30.21 inHg

2:00 PM

Sunny

77° 💧 None 💨 8 mph H 56%30.15 inHg

5:00 PM

Sunny

76° 💧 None 💨 7 mph H 56%30.12 inHg

8:00 PM

Overcast night

68° 💧 None 💨 5 mph H 77%30.15 inHg

11:00 PM

Overcast night

65° 💧 None 💨 9 mph H 73%30.18 inHg

Tuesday

2:00 AM

Mostly cloudy night

63° 💧 None 💨 9 mph H 71%30.15 inHg

5:00 AM

Overcast night

62° 💧 None 💨 8 mph H 79%30.15 inHg

8:00 AM

Overcast

65° 💧 None 💨 6 mph H 82%30.18 inHg

11:00 AM

Overcast

76° 💧 None 💨 6 mph H 69%30.15 inHg

2:00 PM

Overcast

83° 💧 None 💨 8 mph H 59%30.09 inHg

5:00 PM

Overcast

83° 💧 None 💨 7 mph H 56%30.06 inHg

Today

8:00 PM

Mostly clear night

67° 💧 None 💨 6 mph H 77%30.09 inHg

9:00 PM

Clear night

66° 💧 None 💨 6 mph H 77%30.09 inHg

10:00 PM

Clear night

65° 💧 None 💨 7 mph H 77%30.12 inHg

11:00 PM

Clear night

64° 💧 None 💨 6 mph H 79%30.12 inHg

Tomorrow

12:00 AM

Mostly clear night

63° 💧 None 💨 6 mph H 81%30.12 inHg

1:00 AM

Clear night

62° 💧 None 💨 6 mph H 84%30.15 inHg

2:00 AM

Clear night

60° 💧 None 💨 5 mph H 89%30.15 inHg

3:00 AM

Mostly clear night

60° 💧 None 💨 5 mph H 91%30.15 inHg

4:00 AM

Clear night

60° 💧 None 💨 5 mph H 93%30.15 inHg

5:00 AM

Clear night

59° 💧 None 💨 5 mph H 94%30.15 inHg

6:00 AM

Clear night

59° 💧 None 💨 5 mph H 94%30.18 inHg

7:00 AM

Sunny

59° 💧 None 💨 6 mph H 93%30.18 inHg

8:00 AM

Sunny

63° 💧 None 💨 5 mph H 88%30.21 inHg

9:00 AM

Sunny

67° 💧 None 💨 5 mph H 84%30.21 inHg

10:00 AM

Sunny

71° 💧 None 💨 7 mph H 77%30.18 inHg

11:00 AM

Sunny

73° 💧 None 💨 8 mph H 67%30.21 inHg

12:00 PM

Sunny

75° 💧 None 💨 7 mph H 62%30.18 inHg

1:00 PM

Sunny

76° 💧 None 💨 7 mph H 58%30.18 inHg

2:00 PM

Sunny

77° 💧 None 💨 8 mph H 56%30.15 inHg

3:00 PM

Sunny

77° 💧 None 💨 7 mph H 55%30.15 inHg

4:00 PM

Sunny

77° 💧 None 💨 8 mph H 54%30.15 inHg

5:00 PM

Sunny

76° 💧 None 💨 7 mph H 56%30.12 inHg

6:00 PM

Mostly sunny

74° 💧 None 💨 6 mph H 64%30.15 inHg

7:00 PM

Partly cloudy

70° 💧 None 💨 5 mph H 73%30.15 inHg

8:00 PM

Overcast night

68° 💧 None 💨 5 mph H 77%30.15 inHg

9:00 PM

Overcast night

67° 💧 None 💨 8 mph H 75%30.15 inHg

10:00 PM

Mostly cloudy night

67° 💧 None 💨 10 mph H 73%30.18 inHg

11:00 PM

Overcast night

65° 💧 None 💨 9 mph H 73%30.18 inHg

Tuesday

12:00 AM

Mostly cloudy night

64° 💧 None 💨 9 mph H 72%30.18 inHg

1:00 AM

Mostly cloudy night

63° 💧 None 💨 9 mph H 71%30.15 inHg

2:00 AM

Mostly cloudy night

63° 💧 None 💨 9 mph H 71%30.15 inHg

3:00 AM

Mostly cloudy night

62° 💧 None 💨 8 mph H 74%30.15 inHg

4:00 AM

Overcast night

62° 💧 None 💨 7 mph H 77%30.15 inHg

5:00 AM

Overcast night

62° 💧 None 💨 8 mph H 79%30.15 inHg

6:00 AM

Overcast night

62° 💧 None 💨 6 mph H 81%30.15 inHg

7:00 AM

Overcast

62° 💧 None 💨 6 mph H 83%30.15 inHg

8:00 AM

Overcast

65° 💧 None 💨 6 mph H 82%30.18 inHg

9:00 AM

Overcast

69° 💧 None 💨 6 mph H 78%30.18 inHg

10:00 AM

Overcast

73° 💧 None 💨 6 mph H 73%30.15 inHg

11:00 AM

Overcast

76° 💧 None 💨 6 mph H 69%30.15 inHg

12:00 PM

Overcast

79° 💧 None 💨 7 mph H 66%30.15 inHg

1:00 PM

Overcast

81° 💧 None 💨 7 mph H 63%30.09 inHg

2:00 PM

Overcast

83° 💧 None 💨 8 mph H 59%30.09 inHg

3:00 PM

Mostly cloudy

84° 💧 None 💨 9 mph H 56%30.06 inHg

4:00 PM

Mostly cloudy

84° 💧 None 💨 9 mph H 53%30.06 inHg

5:00 PM

Overcast

83° 💧 None 💨 7 mph H 56%30.06 inHg

6:00 PM

Mostly cloudy

81° 💧 None 💨 8 mph H 61%30.03 inHg

7:00 PM

Sunny

78° 💧 None 💨 9 mph H 61%30.03 inHg

8:00 PM

Clear night

76° 💧 None 💨 9 mph H 59%30.03 inHg

9:00 PM

Clear night

74° 💧 None 💨 8 mph H 61%30.06 inHg

10:00 PM

Mostly clear night

72° 💧 None 💨 7 mph H 64%30.06 inHg

11:00 PM

Clear night

71° 💧 None 💨 8 mph H 65%30.03 inHg

Wednesday

12:00 AM

Clear night

71° 💧 None 💨 8 mph H 67%30.03 inHg

1:00 AM

Partly cloudy night

71° 💧 None 💨 9 mph H 70%30.03 inHg

2:00 AM

Mostly cloudy night

72° 💧 None 💨 10 mph H 72%30.03 inHg

3:00 AM

Mostly cloudy night

72° 💧 None 💨 10 mph H 73%30.00 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 9 mph H 73%30.00 inHg

5:00 AM

Mostly cloudy night

71° 💧 None 💨 10 mph H 74%30.00 inHg

6:00 AM

Mostly cloudy night

71° 💧 None 💨 11 mph H 75%30.00 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 10 mph H 75%30.00 inHg

4:00 PM

Partly cloudy

77° 💧 None 💨 6 mph H 91%29.94 inHg

7:00 PM

Overcast

76° 💧 None 💨 4 mph H 83%29.94 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 4 mph H 93%29.94 inHg

Thursday

1:00 AM

Overcast night

69° 💧 None 💨 4 mph H 98%29.94 inHg

4:00 AM

Overcast night

69° 💧 None 💨 6 mph H 96%29.94 inHg

7:00 AM

Overcast

66° 💧 None 💨 5 mph H 93%29.97 inHg

10:00 AM

Mostly sunny

73° 💧 None 💨 7 mph H 69%29.97 inHg

1:00 PM

Mostly sunny

75° 💧 None 💨 10 mph H 58%29.97 inHg

4:00 PM

Sunny

73° 💧 None 💨 12 mph H 54%29.97 inHg

7:00 PM

Sunny

66° 💧 None 💨 3 mph H 74%29.97 inHg

10:00 PM

Clear night

61° 💧 None 💨 2 mph H 83%30.00 inHg

Friday

1:00 AM

Clear night

57° 💧 None 💨 2 mph H 91%30.00 inHg

4:00 AM

Clear night

54° 💧 None 💨 3 mph H 95%30.00 inHg

7:00 AM

Sunny

55° 💧 None 💨 3 mph H 92%30.00 inHg

10:00 AM

Sunny

68° 💧 None 💨 4 mph H 62%30.00 inHg

1:00 PM

Sunny

75° 💧 None 💨 5 mph H 46%29.94 inHg

4:00 PM

Sunny

77° 💧 None 💨 6 mph H 46%29.88 inHg

7:00 PM

Sunny

68° 💧 None 💨 5 mph H 68%29.85 inHg

10:00 PM

Clear night

64° 💧 None 💨 7 mph H 71%29.88 inHg

Saturday

1:00 AM

Clear night

62° 💧 None 💨 7 mph H 83%29.85 inHg

4:00 AM

Clear night

62° 💧 None 💨 6 mph H 91%29.83 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 7 mph H 88%29.85 inHg

10:00 AM

Partly cloudy

76° 💧 None 💨 8 mph H 73%29.85 inHg

1:00 PM

Mostly sunny

84° 💧 None 💨 10 mph H 64%29.85 inHg

7:00 PM

Mostly cloudy

82° 💧 None 💨 10 mph H 53%29.88 inHg

Sunday

1:00 AM

Clear night

77° 💧 None 💨 5 mph H 70%29.88 inHg

7:00 AM

Mostly sunny

66° 💧 None 💨 3 mph H 93%30.00 inHg

1:00 PM

Mostly cloudy

64° 💧 None 💨 3 mph H 97%30.06 inHg

7:00 PM

Mostly sunny

82° 💧 None 💨 1 mph H 60%30.03 inHg

Monday

1:00 AM

Overcast night

76° 💧 None 💨 7 mph H 69%30.00 inHg

7:00 AM

Light thunderstorms

72° 💧 None 💨 7 mph H 92%30.06 inHg

1:00 PM

Partly cloudy

68° 💧 None 💨 8 mph H 98%30.06 inHg

7:00 PM

Moderate rain

83° 💧 None 💨 7 mph H 71%30.03 inHg

Tuesday

1:00 AM

Partly cloudy night

78° 💧 None 💨 8 mph H 88%29.94 inHg

7:00 AM

Sunny

79° 💧 None 💨 13 mph H 73%29.91 inHg

1:00 PM

Mostly cloudy

78° 💧 None 💨 12 mph H 66%29.91 inHg

7:00 PM

Heavy rain

73° 💧 None 💨 10 mph H 90%30.03 inHg

Wednesday

1:00 AM

Mostly clear night

65° 💧 None 💨 9 mph H 84%30.12 inHg

7:00 AM

Mostly sunny

58° 💧 None 💨 3 mph H 91%30.24 inHg

1:00 PM

Sunny

56° 💧 None 💨 4 mph H 95%30.33 inHg

7:00 PM

Clear night

73° 💧 None 💨 6 mph H 58%30.36 inHg

Thursday

1:00 AM

Partly cloudy night

67° 💧 None 💨 6 mph H 74%30.30 inHg

7:00 AM

Sunny

60° 💧 None 💨 6 mph H 84%30.36 inHg

1:00 PM

Sunny

55° 💧 None 💨 4 mph H 93%30.39 inHg

7:00 PM

Clear night

71° 💧 None 💨 7 mph H 51%30.36 inHg

Friday

1:00 AM

Clear night

65° 💧 None 💨 5 mph H 73%30.27 inHg

7:00 AM

Mostly cloudy

58° 💧 None 💨 4 mph H 88%30.27 inHg

1:00 PM

Mostly sunny

55° 💧 None 💨 3 mph H 92%30.24 inHg

7:00 PM

Light rain

68° 💧 None 💨 16 mph H 62%30.24 inHg

Saturday

1:00 AM

Mostly clear night

58° 💧 None 💨 16 mph H 52%30.33 inHg

7:00 AM

Sunny

49° 💧 None 💨 10 mph H 60%30.39 inHg

1:00 PM

Sunny

45° 💧 None 💨 7 mph H 72%30.42 inHg

7:00 PM

Clear night

59° 💧 None 💨 8 mph H 45%30.39 inHg

Sunday

1:00 AM

Partly cloudy night

55° 💧 None 💨 7 mph H 57%30.33 inHg

7:00 AM

Sunny

47° 💧 None 💨 5 mph H 77%30.36 inHg

1:00 PM

Sunny

43° 💧 None 💨 5 mph H 89%30.42 inHg

7:00 PM

Mostly clear night

61° 💧 None 💨 4 mph H 51%30.36 inHg

Monday

1:00 AM

Clear night

56° 💧 None 💨 4 mph H 64%30.30 inHg

7:00 AM

Sunny

49° 💧 None 💨 5 mph H 77%30.33 inHg

1:00 PM

Sunny

45° 💧 None 💨 4 mph H 90%30.36 inHg

In Koontz Lake and, more broadly, across the state of Indiana: Clear skies will persist through the evening with temperatures remaining mild to warm, ranging from 71 to 77 degrees Fahrenheit. Light northeast winds will continue, gusting up to 17 mph at times, with sustained speeds around 7 mph. No precipitation is expected during these hours, ensuring a calm and dry night ahead. Conditions remain comfortable, making it a pleasant evening for outdoor activities. Temperatures will gradually cool later tonight but remain above typical lows for this time of year. Overall, expect clear, dry, and relatively breezy conditions through the evening hours.

15-Day Weather Outlook for Koontz Lake

TomorrowTomorrow

Mostly sunny 77°/59° 💧 None 💨 8 mph

Tuesday, Sep 8Tue Sep 8

Partly cloudy 84°/62° 💧 None 💨 10 mph

Wednesday, Sep 9Wed Sep 9

Light rain 86°/71° 💧 0.228 in 💨 11 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 75°/67° 💧 0.003 in 💨 11 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 76°/55° 💧 None 💨 5 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 82°/58° 💧 0.000 in 💨 10 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 82°/64° 💧 None 💨 5 mph

Monday, Sep 14Mon Sep 14

Light thunderstorms 83°/68° 💧 0.154 in 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Heavy rain 79°/73° 💧 0.264 in 💨 13 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 73°/56° 💧 0.201 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 71°/55° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Light rain 68°/55° 💧 0.081 in 💨 16 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 59°/45° 💧 0.005 in 💨 16 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 61°/43° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Sunny 56°/45° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Koontz Lake

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Koontz Lake

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 8:00 PM

PM2.5 Fine particles Good 3,6µg/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 4,0µg/m³

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

O₃ Ozone Fair 76,2µg/m³

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

NO₂ Nitrogen dioxide Good 2,3µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Koontz 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 7,3High 🙂Fair

Tomorrow UV 7,0High 🙂Fair

Tuesday UV 6,3High 😐Moderate

Wednesday UV 1,1Low 🙂Fair

Thursday UV 6,3High 😐Moderate

Friday UV 6,0High —Unavailable

Saturday UV 6,0High —Unavailable

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 Koontz Lake

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · KOONTZ LAKE, INDIANA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

98/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 8:47 PM–4:42 AM

☁ Cloud cover 3% Real hourly forecast for the best viewing hour.

☾ Moonlight 22% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 47° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min70%

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 Koontz Lake were last refreshed today at 7:47 PM. The current forecast period extends through 08/09/2026 at 5:00 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.