What is the weather in Round Lake Heights right now?

Current weather in Round Lake Heights is overcast clouds.

Where can I find the hourly weather forecast for Round Lake Heights?

This page shows hourly weather forecast for Round Lake Heights, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Round Lake Heights updated regularly?

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

Now · 4:30 AM

Round Lake Heights Weather & Hourly Forecast

United States · Illinois · 60073

66°F

Overcast night

Feels like: 69°F

💧 Humidity 89% 🌡 Pressure 30.12 inHg 💨 Wind 4 mph 👁 Visibility 16.5 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Round Lake Heights

Today

5:00 AM

Overcast night

66° 💧 None 💨 4 mph H 89%30.12 inHg

8:00 AM

Sunny

69° 💧 None 💨 4 mph H 86%30.18 inHg

11:00 AM

Sunny

75° 💧 None 💨 5 mph H 59%30.18 inHg

2:00 PM

Mostly sunny

76° 💧 None 💨 7 mph H 56%30.15 inHg

5:00 PM

Overcast

74° 💧 None 💨 8 mph H 59%30.12 inHg

8:00 PM

Overcast night

68° 💧 None 💨 4 mph H 81%30.12 inHg

11:00 PM

Overcast night

68° 💧 None 💨 6 mph H 86%30.15 inHg

Tomorrow

2:00 AM

Overcast night

67° 💧 None 💨 6 mph H 82%30.12 inHg

5:00 AM

Overcast night

65° 💧 None 💨 4 mph H 88%30.15 inHg

8:00 AM

Overcast

66° 💧 None 💨 6 mph H 83%30.12 inHg

11:00 AM

Overcast

75° 💧 None 💨 7 mph H 68%30.09 inHg

2:00 PM

Mostly cloudy

80° 💧 None 💨 7 mph H 54%30.06 inHg

5:00 PM

Sunny

82° 💧 None 💨 8 mph H 53%30.00 inHg

8:00 PM

Clear night

76° 💧 None 💨 8 mph H 64%30.00 inHg

11:00 PM

Overcast night

76° 💧 None 💨 11 mph H 63%30.00 inHg

Wednesday

2:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 61%29.94 inHg

Today

5:00 AM

Overcast night

66° 💧 None 💨 4 mph H 89%30.12 inHg

6:00 AM

Mostly cloudy night

66° 💧 None 💨 4 mph H 88%30.15 inHg

7:00 AM

Mostly cloudy

66° 💧 None 💨 5 mph H 89%30.15 inHg

8:00 AM

Sunny

69° 💧 None 💨 4 mph H 86%30.18 inHg

9:00 AM

Sunny

71° 💧 None 💨 6 mph H 79%30.15 inHg

10:00 AM

Sunny

73° 💧 None 💨 6 mph H 67%30.18 inHg

11:00 AM

Sunny

75° 💧 None 💨 5 mph H 59%30.18 inHg

12:00 PM

Mostly sunny

76° 💧 None 💨 5 mph H 57%30.18 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 7 mph H 56%30.15 inHg

2:00 PM

Mostly sunny

76° 💧 None 💨 7 mph H 56%30.15 inHg

3:00 PM

Mostly sunny

76° 💧 None 💨 7 mph H 55%30.15 inHg

4:00 PM

Mostly cloudy

75° 💧 None 💨 8 mph H 56%30.12 inHg

5:00 PM

Overcast

74° 💧 None 💨 8 mph H 59%30.12 inHg

6:00 PM

Overcast

72° 💧 None 💨 7 mph H 64%30.12 inHg

7:00 PM

Overcast

70° 💧 None 💨 4 mph H 74%30.12 inHg

8:00 PM

Overcast night

68° 💧 None 💨 4 mph H 81%30.12 inHg

9:00 PM

Overcast night

68° 💧 None 💨 4 mph H 83%30.15 inHg

10:00 PM

Mostly cloudy night

68° 💧 None 💨 4 mph H 85%30.15 inHg

11:00 PM

Overcast night

68° 💧 None 💨 6 mph H 86%30.15 inHg

Tomorrow

12:00 AM

Overcast night

68° 💧 None 💨 6 mph H 86%30.12 inHg

1:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 81%30.12 inHg

2:00 AM

Overcast night

67° 💧 None 💨 6 mph H 82%30.12 inHg

3:00 AM

Overcast night

66° 💧 None 💨 6 mph H 83%30.12 inHg

4:00 AM

Overcast night

65° 💧 None 💨 5 mph H 85%30.12 inHg

5:00 AM

Overcast night

65° 💧 None 💨 4 mph H 88%30.15 inHg

6:00 AM

Overcast night

65° 💧 None 💨 6 mph H 91%30.12 inHg

7:00 AM

Overcast

65° 💧 None 💨 6 mph H 89%30.12 inHg

8:00 AM

Overcast

66° 💧 None 💨 6 mph H 83%30.12 inHg

9:00 AM

Overcast

69° 💧 None 💨 6 mph H 78%30.12 inHg

10:00 AM

Overcast

72° 💧 None 💨 6 mph H 74%30.12 inHg

11:00 AM

Overcast

75° 💧 None 💨 7 mph H 68%30.09 inHg

12:00 PM

Overcast

77° 💧 None 💨 7 mph H 61%30.09 inHg

1:00 PM

Overcast

79° 💧 None 💨 7 mph H 57%30.06 inHg

2:00 PM

Mostly cloudy

80° 💧 None 💨 7 mph H 54%30.06 inHg

3:00 PM

Mostly cloudy

82° 💧 None 💨 7 mph H 52%30.06 inHg

4:00 PM

Sunny

82° 💧 None 💨 8 mph H 51%30.03 inHg

5:00 PM

Sunny

82° 💧 None 💨 8 mph H 53%30.00 inHg

6:00 PM

Sunny

81° 💧 None 💨 8 mph H 58%30.00 inHg

7:00 PM

Sunny

78° 💧 None 💨 8 mph H 62%30.00 inHg

8:00 PM

Clear night

76° 💧 None 💨 8 mph H 64%30.00 inHg

9:00 PM

Mostly clear night

76° 💧 None 💨 8 mph H 64%30.03 inHg

10:00 PM

Overcast night

76° 💧 None 💨 10 mph H 64%30.03 inHg

11:00 PM

Overcast night

76° 💧 None 💨 11 mph H 63%30.00 inHg

Wednesday

12:00 AM

Overcast night

76° 💧 None 💨 11 mph H 61%29.97 inHg

1:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 61%29.97 inHg

2:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 61%29.94 inHg

3:00 AM

Mostly cloudy night

75° 💧 None 💨 11 mph H 60%29.94 inHg

4:00 AM

Overcast night

75° 💧 None 💨 11 mph H 58%29.94 inHg

5:00 AM

Overcast night

75° 💧 None 💨 11 mph H 58%29.97 inHg

6:00 AM

Light rain

72° 💧 0.008 in 💨 11 mph H 69%29.97 inHg

7:00 AM

Overcast

72° 💧 0.002 in 💨 13 mph H 76%29.97 inHg

8:00 AM

Light rain

71° 💧 0.030 in 💨 10 mph H 86%29.97 inHg

9:00 AM

Light rain

71° 💧 0.015 in 💨 12 mph H 90%30.00 inHg

10:00 AM

Light rain

71° 💧 0.018 in 💨 11 mph H 93%29.97 inHg

11:00 AM

Light rain

73° 💧 0.008 in 💨 9 mph H 91%30.00 inHg

12:00 PM

Overcast

76° 💧 0.001 in 💨 11 mph H 84%29.97 inHg

1:00 PM

Overcast

78° 💧 0.000 in 💨 10 mph H 81%29.97 inHg

2:00 PM

Overcast

77° 💧 0.003 in 💨 9 mph H 84%29.94 inHg

3:00 PM

Light rain

75° 💧 0.035 in 💨 9 mph H 94%29.94 inHg

4:00 PM

Overcast

75° 💧 0.004 in 💨 6 mph H 94%29.94 inHg

5:00 PM

Overcast

76° 💧 None 💨 6 mph H 92%29.94 inHg

6:00 PM

Overcast

76° 💧 None 💨 7 mph H 89%29.94 inHg

7:00 PM

Overcast

74° 💧 None 💨 6 mph H 91%29.94 inHg

10:00 PM

Clear night

70° 💧 None 💨 7 mph H 92%29.94 inHg

Thursday

1:00 AM

Clear night

67° 💧 None 💨 7 mph H 87%29.97 inHg

4:00 AM

Clear night

63° 💧 None 💨 5 mph H 87%29.97 inHg

7:00 AM

Mostly cloudy

61° 💧 None 💨 6 mph H 88%30.03 inHg

10:00 AM

Overcast

69° 💧 None 💨 5 mph H 70%30.03 inHg

1:00 PM

Sunny

74° 💧 None 💨 7 mph H 53%30.03 inHg

4:00 PM

Mostly sunny

74° 💧 None 💨 8 mph H 51%29.97 inHg

7:00 PM

Sunny

68° 💧 None 💨 4 mph H 68%29.97 inHg

10:00 PM

Clear night

63° 💧 None 💨 2 mph H 78%30.00 inHg

Friday

1:00 AM

Clear night

60° 💧 None 💨 0 mph H 84%30.00 inHg

4:00 AM

Clear night

59° 💧 None 💨 1 mph H 91%30.00 inHg

7:00 AM

Sunny

59° 💧 None 💨 4 mph H 90%30.03 inHg

10:00 AM

Sunny

70° 💧 None 💨 7 mph H 65%30.03 inHg

1:00 PM

Sunny

76° 💧 None 💨 6 mph H 53%29.97 inHg

4:00 PM

Sunny

75° 💧 None 💨 7 mph H 55%29.91 inHg

7:00 PM

Sunny

67° 💧 None 💨 6 mph H 67%29.88 inHg

10:00 PM

Clear night

66° 💧 None 💨 7 mph H 77%29.88 inHg

Saturday

1:00 AM

Mostly clear night

65° 💧 None 💨 7 mph H 75%29.88 inHg

4:00 AM

Partly cloudy night

63° 💧 None 💨 6 mph H 83%29.85 inHg

7:00 AM

Sunny

65° 💧 None 💨 8 mph H 85%29.83 inHg

10:00 AM

Overcast

67° 💧 None 💨 11 mph H 95%29.85 inHg

1:00 PM

Overcast

77° 💧 None 💨 12 mph H 75%29.85 inHg

4:00 PM

Partly cloudy

79° 💧 None 💨 9 mph H 73%29.85 inHg

7:00 PM

Sunny

75° 💧 None 💨 5 mph H 84%29.91 inHg

Sunday

1:00 AM

Mostly clear night

62° 💧 None 💨 6 mph H 86%30.03 inHg

7:00 AM

Sunny

57° 💧 None 💨 5 mph H 89%30.12 inHg

1:00 PM

Partly cloudy

74° 💧 None 💨 4 mph H 51%30.15 inHg

7:00 PM

Mostly cloudy

66° 💧 None 💨 6 mph H 80%30.12 inHg

Monday

1:00 AM

Overcast night

65° 💧 None 💨 6 mph H 81%30.15 inHg

7:00 AM

Moderate rain

64° 💧 None 💨 8 mph H 94%30.12 inHg

1:00 PM

Overcast

73° 💧 None 💨 10 mph H 78%29.97 inHg

7:00 PM

Sunny

80° 💧 None 💨 9 mph H 76%29.77 inHg

Tuesday

1:00 AM

Light thunderstorms

73° 💧 None 💨 17 mph H 95%29.77 inHg

7:00 AM

Sunny

62° 💧 None 💨 13 mph H 80%29.91 inHg

1:00 PM

Mostly sunny

70° 💧 None 💨 13 mph H 58%30.06 inHg

7:00 PM

Sunny

64° 💧 None 💨 6 mph H 65%30.15 inHg

Wednesday

1:00 AM

Clear night

55° 💧 None 💨 4 mph H 86%30.27 inHg

7:00 AM

Sunny

53° 💧 None 💨 5 mph H 88%30.36 inHg

1:00 PM

Partly cloudy

69° 💧 None 💨 8 mph H 49%30.36 inHg

7:00 PM

Mostly sunny

63° 💧 None 💨 3 mph H 73%30.33 inHg

Thursday

1:00 AM

Mostly clear night

60° 💧 None 💨 5 mph H 83%30.36 inHg

7:00 AM

Overcast

53° 💧 None 💨 7 mph H 83%30.42 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 6 mph H 55%30.39 inHg

7:00 PM

Clear night

58° 💧 None 💨 3 mph H 71%30.30 inHg

Friday

1:00 AM

Clear night

53° 💧 None 💨 5 mph H 87%30.30 inHg

7:00 AM

Sunny

50° 💧 None 💨 6 mph H 90%30.27 inHg

1:00 PM

Sunny

67° 💧 None 💨 11 mph H 48%30.18 inHg

7:00 PM

Clear night

63° 💧 None 💨 6 mph H 69%30.12 inHg

Saturday

1:00 AM

Clear night

56° 💧 None 💨 5 mph H 79%30.12 inHg

7:00 AM

Sunny

53° 💧 None 💨 5 mph H 88%30.15 inHg

1:00 PM

Sunny

69° 💧 None 💨 3 mph H 53%30.15 inHg

7:00 PM

Clear night

63° 💧 None 💨 3 mph H 73%30.09 inHg

Sunday

1:00 AM

Clear night

57° 💧 None 💨 5 mph H 89%30.06 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 5 mph H 92%30.06 inHg

1:00 PM

Mostly cloudy

75° 💧 None 💨 12 mph H 49%29.97 inHg

7:00 PM

Overcast night

67° 💧 None 💨 5 mph H 66%29.91 inHg

Monday

1:00 AM

Mostly cloudy night

61° 💧 None 💨 5 mph H 82%29.94 inHg

7:00 AM

Overcast

60° 💧 None 💨 4 mph H 85%29.94 inHg

1:00 PM

Light rain

70° 💧 None 💨 5 mph H 76%29.97 inHg

7:00 PM

Overcast night

60° 💧 None 💨 11 mph H 79%30.00 inHg

In Round Lake Heights and, more broadly, across the state of Illinois: The evening will feature a mix of sun and clouds, with temperatures remaining mild to warm, ranging from 76 to 78 degrees Fahrenheit. Winds will be light and coming from the east, with speeds up to 8 mph, occasionally gusting to 18 mph. No precipitation is expected during this time, making for a relatively calm and pleasant evening. The weather should remain stable through the next few hours, with comfortable conditions and no significant weather disturbances anticipated. Overall, it’s a good evening for outdoor activities or relaxing outside. Temperatures will gradually stay steady, and the breeze will provide a gentle refreshment as the night progresses.

15-Day Weather Outlook for Round Lake Heights

TomorrowTomorrow

Overcast 82°/65° 💧 None 💨 8 mph

Wednesday, Sep 9Wed Sep 9

Mostly sunny 78°/71° 💧 None 💨 13 mph

Thursday, Sep 10Thu Sep 10

Overcast 74°/61° 💧 0.135 in 💨 8 mph

Friday, Sep 11Fri Sep 11

Sunny 76°/59° 💧 None 💨 7 mph

Saturday, Sep 12Sat Sep 12

Overcast 79°/63° 💧 0.139 in 💨 12 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 75°/57° 💧 0.004 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Moderate rain 73°/64° 💧 0.537 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Light thunderstorms 80°/62° 💧 0.390 in 💨 17 mph

Wednesday, Sep 16Wed Sep 16

Partly cloudy 69°/53° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 63°/53° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Sunny 67°/50° 💧 None 💨 11 mph

Saturday, Sep 19Sat Sep 19

Sunny 69°/53° 💧 None 💨 6 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 75°/55° 💧 None 💨 12 mph

Monday, Sep 21Mon Sep 21

Light rain 70°/60° 💧 0.058 in 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Overcast 60°/60° 💧 0.153 in 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Round Lake Heights

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Round Lake Heights

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 5:00 AM

PM2.5 Fine particles Good 4,2µg/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 5,1µg/m³

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

O₃ Ozone Good 32,6µg/m³

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

NO₂ Nitrogen dioxide Good 7,9µg/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 Round Lake Heights

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 7,1High 😊Good

Tomorrow UV 6,5High 😐Moderate

Wednesday UV 2,7Low 🙂Fair

Thursday UV 5,8Moderate 🙂Fair

Friday UV 7,0High 😊Good

Saturday UV 6,0High —Unavailable

Sunday UV 7,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,6 9:00 AMUV 1,8 10:00 AMUV 3,5 11:00 AMUV 5,3 12:00 PMUV 6,7 1:00 PMUV 7,1 2:00 PMUV 6,4 3:00 PMUV 4,9 4:00 PMUV 3,0 5:00 PMUV 1,3 6:00 PMUV 0,4

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.

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 Round Lake Heights

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ROUND LAKE HEIGHTS, ILLINOIS

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

24/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 100% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 29° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 88° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

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.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for Round Lake Heights were last refreshed today at 4:30 AM. The current forecast period extends through 09/09/2026 at 2:00 AM. 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.