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Current weather in Winthrop Harbor is clear sky.

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This page shows hourly weather forecast for Winthrop Harbor, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Winthrop Harbor updated regularly?

Weather data for Winthrop Harbor is updated regularly with the latest available observations and forecasts.

Now · 9:26 AM

Winthrop Harbor Weather & Hourly Forecast

United States · Illinois · 60096

75°F

Sunny

Feels like: 76°F

💧 Humidity 88% 🌡 Pressure 29.97 inHg 💨 Wind 5 mph 👁 Visibility 6.2 mi ☁ Clouds 0% ☀️ UV index 1.6 · Low 🌅 Sunrise 6:19 AM 🌇 Sunset 7:21 PM

Hourly Forecast for Winthrop Harbor

Today

10:00 AM

Sunny

75° 💧 None 💨 5 mph H 88%29.97 inHg

1:00 PM

Mostly sunny

81° 💧 None 💨 4 mph H 70%29.91 inHg

4:00 PM

Sunny

90° 💧 None 💨 9 mph H 61%29.83 inHg

7:00 PM

Light rain

85° 💧 0.02 in 💨 7 mph H 78%29.83 inHg

10:00 PM

Clear night

77° 💧 0.01 in 💨 9 mph H 90%29.88 inHg

Tomorrow

1:00 AM

Moderate rain

75° 💧 0.16 in 💨 6 mph H 95%29.91 inHg

4:00 AM

Mostly cloudy night

72° 💧 None 💨 7 mph H 97%29.88 inHg

7:00 AM

Mostly cloudy

73° 💧 None 💨 9 mph H 96%29.91 inHg

10:00 AM

Overcast

71° 💧 None 💨 11 mph H 92%29.97 inHg

1:00 PM

Overcast

72° 💧 None 💨 11 mph H 84%29.97 inHg

4:00 PM

Overcast

76° 💧 None 💨 10 mph H 78%29.97 inHg

7:00 PM

Mostly cloudy

73° 💧 None 💨 12 mph H 80%29.97 inHg

10:00 PM

Clear night

69° 💧 None 💨 11 mph H 86%30.03 inHg

Sunday

1:00 AM

Clear night

68° 💧 None 💨 7 mph H 89%30.06 inHg

4:00 AM

Clear night

68° 💧 None 💨 9 mph H 84%30.06 inHg

7:00 AM

Sunny

67° 💧 None 💨 8 mph H 74%30.09 inHg

Today

10:00 AM

Sunny

75° 💧 None 💨 5 mph H 88%29.97 inHg

11:00 AM

Sunny

76° 💧 None 💨 4 mph H 84%29.97 inHg

12:00 PM

Sunny

79° 💧 None 💨 4 mph H 78%29.94 inHg

1:00 PM

Mostly sunny

81° 💧 None 💨 4 mph H 70%29.91 inHg

2:00 PM

Sunny

86° 💧 None 💨 6 mph H 63%29.88 inHg

3:00 PM

Sunny

89° 💧 None 💨 7 mph H 58%29.85 inHg

4:00 PM

Sunny

90° 💧 None 💨 9 mph H 61%29.83 inHg

5:00 PM

Sunny

89° 💧 None 💨 8 mph H 66%29.83 inHg

6:00 PM

Sunny

88° 💧 None 💨 8 mph H 71%29.83 inHg

7:00 PM

Light rain

85° 💧 0.01 in 💨 7 mph H 78%29.83 inHg

8:00 PM

Light rain

82° 💧 0.01 in 💨 5 mph H 82%29.85 inHg

9:00 PM

Clear night

80° 💧 None 💨 4 mph H 87%29.88 inHg

10:00 PM

Clear night

77° 💧 None 💨 9 mph H 90%29.88 inHg

11:00 PM

Clear night

77° 💧 None 💨 10 mph H 93%29.88 inHg

Tomorrow

12:00 AM

Light rain

76° 💧 0.01 in 💨 8 mph H 94%29.88 inHg

1:00 AM

Moderate rain

75° 💧 0.05 in 💨 6 mph H 95%29.91 inHg

2:00 AM

Light rain

74° 💧 0.03 in 💨 5 mph H 96%29.88 inHg

3:00 AM

Moderate rain

72° 💧 0.08 in 💨 7 mph H 97%29.91 inHg

4:00 AM

Mostly cloudy night

72° 💧 None 💨 7 mph H 97%29.88 inHg

5:00 AM

Mostly cloudy night

72° 💧 None 💨 4 mph H 97%29.88 inHg

6:00 AM

Partly cloudy night

72° 💧 None 💨 8 mph H 99%29.91 inHg

7:00 AM

Mostly cloudy

73° 💧 None 💨 9 mph H 96%29.91 inHg

8:00 AM

Overcast

72° 💧 None 💨 10 mph H 96%29.94 inHg

9:00 AM

Overcast

72° 💧 None 💨 10 mph H 94%29.94 inHg

10:00 AM

Overcast

71° 💧 None 💨 11 mph H 92%29.97 inHg

11:00 AM

Overcast

71° 💧 None 💨 11 mph H 91%29.97 inHg

12:00 PM

Overcast

73° 💧 None 💨 10 mph H 88%29.97 inHg

1:00 PM

Overcast

72° 💧 None 💨 11 mph H 84%29.97 inHg

2:00 PM

Overcast

75° 💧 None 💨 11 mph H 85%30.00 inHg

3:00 PM

Overcast

75° 💧 None 💨 10 mph H 83%29.97 inHg

4:00 PM

Overcast

76° 💧 None 💨 10 mph H 78%29.97 inHg

5:00 PM

Overcast

75° 💧 None 💨 11 mph H 74%29.97 inHg

6:00 PM

Mostly cloudy

74° 💧 None 💨 11 mph H 76%29.97 inHg

7:00 PM

Mostly cloudy

73° 💧 None 💨 12 mph H 80%29.97 inHg

8:00 PM

Clear night

72° 💧 None 💨 12 mph H 81%30.00 inHg

9:00 PM

Clear night

70° 💧 None 💨 12 mph H 83%30.00 inHg

10:00 PM

Clear night

69° 💧 None 💨 11 mph H 86%30.03 inHg

11:00 PM

Clear night

68° 💧 None 💨 10 mph H 86%30.03 inHg

Sunday

12:00 AM

Clear night

68° 💧 None 💨 8 mph H 87%30.03 inHg

1:00 AM

Clear night

68° 💧 None 💨 7 mph H 89%30.06 inHg

2:00 AM

Clear night

69° 💧 None 💨 7 mph H 88%30.06 inHg

3:00 AM

Clear night

68° 💧 None 💨 9 mph H 85%30.06 inHg

4:00 AM

Clear night

68° 💧 None 💨 9 mph H 84%30.06 inHg

5:00 AM

Clear night

67° 💧 None 💨 7 mph H 83%30.06 inHg

6:00 AM

Clear night

67° 💧 None 💨 7 mph H 78%30.06 inHg

7:00 AM

Sunny

67° 💧 None 💨 8 mph H 74%30.09 inHg

8:00 AM

Sunny

68° 💧 None 💨 8 mph H 72%30.12 inHg

9:00 AM

Sunny

70° 💧 None 💨 10 mph H 67%30.12 inHg

10:00 AM

Sunny

70° 💧 None 💨 11 mph H 66%30.15 inHg

11:00 AM

Sunny

71° 💧 None 💨 11 mph H 65%30.15 inHg

12:00 PM

Sunny

71° 💧 None 💨 11 mph H 64%30.15 inHg

1:00 PM

Sunny

71° 💧 None 💨 10 mph H 62%30.12 inHg

2:00 PM

Sunny

72° 💧 None 💨 9 mph H 62%30.12 inHg

3:00 PM

Mostly sunny

72° 💧 None 💨 7 mph H 60%30.12 inHg

4:00 PM

Mostly cloudy

72° 💧 None 💨 6 mph H 59%30.12 inHg

5:00 PM

Partly cloudy

72° 💧 None 💨 7 mph H 61%30.12 inHg

6:00 PM

Partly cloudy

70° 💧 None 💨 5 mph H 67%30.09 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 6 mph H 73%30.09 inHg

8:00 PM

Clear night

67° 💧 None 💨 8 mph H 76%30.09 inHg

9:00 PM

Clear night

67° 💧 None 💨 8 mph H 79%30.12 inHg

10:00 PM

Clear night

67° 💧 None 💨 9 mph H 81%30.12 inHg

11:00 PM

Clear night

67° 💧 None 💨 8 mph H 82%30.12 inHg

Monday

12:00 AM

Clear night

68° 💧 None 💨 11 mph H 83%30.09 inHg

1:00 AM

Clear night

68° 💧 None 💨 9 mph H 81%30.12 inHg

2:00 AM

Mostly clear night

67° 💧 None 💨 8 mph H 81%30.12 inHg

3:00 AM

Mostly cloudy night

67° 💧 None 💨 9 mph H 84%30.12 inHg

4:00 AM

Partly cloudy night

66° 💧 None 💨 10 mph H 84%30.15 inHg

5:00 AM

Partly cloudy night

66° 💧 None 💨 9 mph H 84%30.15 inHg

6:00 AM

Partly cloudy night

65° 💧 None 💨 9 mph H 83%30.15 inHg

7:00 AM

Partly cloudy

65° 💧 None 💨 8 mph H 82%30.18 inHg

8:00 AM

Mostly sunny

67° 💧 None 💨 8 mph H 78%30.18 inHg

9:00 AM

Mostly sunny

69° 💧 None 💨 9 mph H 73%30.18 inHg

10:00 AM

Mostly cloudy

70° 💧 None 💨 9 mph H 70%30.18 inHg

11:00 AM

Partly cloudy

71° 💧 None 💨 10 mph H 68%30.18 inHg

12:00 PM

Partly cloudy

71° 💧 None 💨 10 mph H 67%30.18 inHg

1:00 PM

Partly cloudy

71° 💧 None 💨 10 mph H 66%30.15 inHg

2:00 PM

Mostly sunny

71° 💧 None 💨 10 mph H 65%30.15 inHg

3:00 PM

Partly cloudy

71° 💧 None 💨 9 mph H 64%30.15 inHg

4:00 PM

Partly cloudy

71° 💧 None 💨 8 mph H 62%30.15 inHg

5:00 PM

Partly cloudy

71° 💧 None 💨 6 mph H 63%30.12 inHg

6:00 PM

Mostly cloudy

69° 💧 None 💨 5 mph H 69%30.12 inHg

7:00 PM

Mostly cloudy

67° 💧 None 💨 5 mph H 73%30.12 inHg

8:00 PM

Overcast night

66° 💧 None 💨 5 mph H 76%30.12 inHg

9:00 PM

Mostly cloudy night

67° 💧 None 💨 7 mph H 76%30.12 inHg

10:00 PM

Mostly cloudy night

67° 💧 None 💨 6 mph H 78%30.12 inHg

11:00 PM

Mostly cloudy night

67° 💧 None 💨 8 mph H 81%30.12 inHg

Tuesday

12:00 AM

Mostly cloudy night

67° 💧 None 💨 8 mph H 83%30.12 inHg

1:00 AM

Mostly cloudy night

67° 💧 None 💨 8 mph H 86%30.09 inHg

2:00 AM

Overcast night

68° 💧 None 💨 9 mph H 89%30.09 inHg

3:00 AM

Overcast night

67° 💧 None 💨 9 mph H 90%30.09 inHg

4:00 AM

Overcast night

66° 💧 None 💨 9 mph H 90%30.09 inHg

5:00 AM

Overcast night

66° 💧 None 💨 8 mph H 90%30.09 inHg

6:00 AM

Mostly cloudy night

65° 💧 None 💨 9 mph H 90%30.06 inHg

7:00 AM

Mostly cloudy

65° 💧 None 💨 9 mph H 89%30.06 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 8 mph H 85%30.09 inHg

9:00 AM

Partly cloudy

70° 💧 None 💨 8 mph H 79%30.09 inHg

In Winthrop Harbor and, more broadly, across the state of Illinois: This morning is expected to start off mostly sunny with just a few clouds drifting across the sky. Temperatures will quickly rise into the very hot range, with lows around 74 degrees and highs reaching up to 97 degrees by the afternoon. Winds will be moderate, coming from the southwest at around 10 mph, with gusts reaching 20 mph at times. No precipitation is expected throughout the day, so outdoor plans should be comfortable as long as sun protection measures are taken. Overall, expect a hot and mostly clear day with gentle breezes, making it suitable for outdoor activities during the cooler morning hours. Be sure to hydrate frequently and seek shade during the peak heat of the afternoon.

15-Day Weather Outlook for Winthrop Harbor

TomorrowTomorrow

Moderate rain 76°/68° 💧 0.17 in 💨 12 mph

Sunday, Sep 6Sun Sep 6

Sunny 72°/67° 💧 None 💨 11 mph

Monday, Sep 7Mon Sep 7

Partly cloudy 71°/65° 💧 None 💨 11 mph

Tuesday, Sep 8Tue Sep 8

Mostly sunny 83°/65° 💧 None 💨 15 mph

Wednesday, Sep 9Wed Sep 9

Light rain 83°/68° 💧 0.06 in 💨 20 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 67°/58° 💧 None 💨 12 mph

Friday, Sep 11Fri Sep 11

Light rain 66°/60° 💧 0.05 in 💨 6 mph

Saturday, Sep 12Sat Sep 12

Sunny 71°/61° 💧 None 💨 12 mph

Sunday, Sep 13Sun Sep 13

Light rain 74°/58° 💧 0.02 in 💨 14 mph

Monday, Sep 14Mon Sep 14

Sunny 64°/52° 💧 None 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Light rain 71°/53° 💧 0.09 in 💨 16 mph

Wednesday, Sep 16Wed Sep 16

Light rain 79°/62° 💧 0.01 in 💨 12 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 75°/59° 💧 None 💨 12 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 62°/48° 💧 None 💨 12 mph

Saturday, Sep 19Sat Sep 19

Light rain 64°/51° 💧 0.01 in 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Winthrop Harbor

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Winthrop Harbor

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 10:00 AM

PM2.5 Fine particles Good 6,1µg/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 6,8µg/m³

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

O₃ Ozone Good 28,9µg/m³

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

NO₂ Nitrogen dioxide Good 6,9µg/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 Winthrop Harbor

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 5,1Moderate 😊Good

Tomorrow UV 7,1High 😐Moderate

Sunday UV 7,1High 😐Moderate

Monday UV 6,0High 😐Moderate

Tuesday UV 7,0High 😊Good

Wednesday UV 7,0High —Unavailable

Thursday UV 6,0High —Unavailable

Hourly UV index today

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

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.11 Population: 6,559

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Forecast data for Winthrop Harbor were last refreshed today at 9:26 AM. The current forecast period extends through 06/09/2026 at 7:00 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.