Six Flags Great America Weather

Gurnee, IL · Six Flags · Theme park
Will rides close today?
Updated 12 minutes ago
Guest outlook (right now): 😊 Comfort: Excellent (89) 😤 Frustration: Low (0)

Current conditions

77°
Isolated Showers And Thunderstorms
Feels like
77°F
Dew point
70°F
Humidity
78%
Cloud cover
72%
Precip chance
18%
Snow chance (24h)
0%
Precip (next 24h)
0 in
Pressure
30.05 inHg
Wind
↑ SW 10 mph · G15

Attraction impact outlook

😊 Comfort: Excellent (89) 😤 Frustration: Low (0)
Tall coasters (200ft+) (1) Likely operating
Coasters (12) Likely operating
Water rides (2) Likely operating
Flat & spinning rides (9) Likely operating
Kids' rides (5) Likely operating
😊 Comfort: Excellent (90) 😤 Frustration: Severe (73)
Tall coasters (200ft+) (1) Likely closed
Thunderstorms in the forecast Wed 1pm–4pm (≈3 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Coasters (12) Likely closed
Thunderstorms in the forecast Wed 1pm–4pm (≈3 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Water rides (2) Likely closed
Thunderstorms in the forecast Wed 1pm–4pm (≈3 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Flat & spinning rides (9) Likely closed
Thunderstorms in the forecast Wed 1pm–4pm (≈3 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Kids' rides (5) Likely closed
Thunderstorms in the forecast Wed 1pm–4pm (≈3 hrs) — outdoor attractions close during lightning; expect rolling interruptions
😊 Comfort: Excellent (82) 😤 Frustration: Severe (80)
Tall coasters (200ft+) (1) Likely closed
Thunderstorms in the forecast Wed 4pm–Thu 1pm (≈10 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Coasters (12) Likely closed
Thunderstorms in the forecast Wed 4pm–Thu 1pm (≈10 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Water rides (2) Likely closed
Thunderstorms in the forecast Wed 4pm–Thu 1pm (≈10 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Flat & spinning rides (9) Likely closed
Thunderstorms in the forecast Wed 4pm–Thu 1pm (≈10 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Kids' rides (5) Likely closed
Thunderstorms in the forecast Wed 4pm–Thu 1pm (≈10 hrs) — outdoor attractions close during lightning; expect rolling interruptions
😊 Comfort: Excellent (88) 😤 Frustration: Severe (82)
Tall coasters (200ft+) (1) Likely closed
Thunderstorms in the forecast Fri 9am–2pm (≈5 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Coasters (12) Likely closed
Thunderstorms in the forecast Fri 9am–2pm (≈5 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Water rides (2) Likely closed
Thunderstorms in the forecast Fri 9am–2pm (≈5 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Flat & spinning rides (9) Likely closed
Thunderstorms in the forecast Fri 9am–2pm (≈5 hrs) — outdoor attractions close during lightning; expect rolling interruptions
Kids' rides (5) Likely closed
Thunderstorms in the forecast Fri 9am–2pm (≈5 hrs) — outdoor attractions close during lightning; expect rolling interruptions

Forecast confidence decreases with range: the next-24h outlook is based on high-resolution NWS forecasts, while the 48–72h windows lean on model guidance and can shift meaningfully — recheck closer to your visit. Parks make their own operating decisions.

Forecast

This Afternoon
80°F
Isolated Showers And Thunderstorms
10 mph WSW · 18% precip
Tonight
60°F
Scattered Showers And Thunderstorms
5 to 10 mph NNW · 27% precip
Wednesday
71°F
Slight Chance Showers And Thunderstorms
5 to 10 mph NE · 19% precip
Wednesday Night
62°F
Chance Showers And Thunderstorms
0 to 10 mph NE · 32% precip
Thursday
74°F
Chance Showers And Thunderstorms
0 to 5 mph NNE · 32% precip
Thursday Night
62°F
Mostly Cloudy
5 mph NE · 7% precip
Friday
71°F
Chance Showers And Thunderstorms
5 to 15 mph ENE · 50% precip
Friday Night
62°F
Chance Showers And Thunderstorms
5 to 15 mph SE · 72% precip
Saturday
79°F
Showers And Thunderstorms
10 mph SSW · 81% precip

This Afternoon: Isolated showers and thunderstorms before 3pm. Mostly cloudy, with a high near 80. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

72-hour forecast

Hour-by-hour (next 72 hours, park local time)

Tue Sep 15
2pm
77°
⚡
18%
10/15
3pm
79°
 
11%
10/15
4pm
80°
 
10%
10/15
5pm
79°
 
10%
10/15
6pm
76°
 
10%
5/11
7pm
74°
 
14%
5/11
8pm
72°
 
14%
5/11
9pm
71°
 
14%
5/14
10pm
70°
⚡
15%
10/14
11pm
69°
⚡
15%
5/14
Wed Sep 16
12am
67°
⚡
15%
5/12
1am
65°
⚡
27%
5/12
2am
64°
⚡
27%
5/12
3am
63°
⚡
27%
5/12
4am
62°
⚡
16%
5/12
5am
62°
⚡
16%
5/12
6am
62°
⚡
16%
5/14
7am
60°
 
14%
5/14
8am
63°
 
14%
10/14
9am
66°
 
14%
10/10
10am
69°
 
14%
10/10
11am
70°
 
14%
10/10
12pm
71°
 
14%
10/9
1pm
71°
⚡
19%
10/9
2pm
71°
⚡
19%
10/9
3pm
70°
⚡
19%
10/6
4pm
69°
⚡
19%
10/6
5pm
68°
⚡
19%
10/6
6pm
66°
⚡
19%
10/10
7pm
64°
⚡
19%
10/10
8pm
62°
⚡
19%
5/10
9pm
62°
⚡
19%
5/8
10pm
62°
⚡
21%
5/8
11pm
62°
⚡
21%
5/8
Thu Sep 17
12am
64°
⚡
21%
0/3
1am
66°
⚡
25%
0/3
2am
66°
⚡
25%
0/3
3am
65°
⚡
25%
0/4
4am
65°
⚡
32%
0/4
5am
65°
⚡
32%
0/4
6am
65°
⚡
32%
0/4
7am
65°
⚡
31%
0/4
8am
66°
⚡
31%
5/4
9am
68°
⚡
31%
5/4
10am
70°
⚡
31%
5/4
11am
71°
⚡
31%
5/4
12pm
72°
⚡
31%
5/3
1pm
73°
 
5%
5/3
2pm
74°
 
5%
5/3
3pm
74°
 
5%
5/8
4pm
74°
 
5%
5/8
5pm
73°
 
5%
5/8
6pm
71°
 
5%
5/10
7pm
69°
 
4%
5/10
8pm
68°
 
4%
5/10
9pm
66°
 
4%
5/15
10pm
65°
 
4%
5/15
11pm
64°
 
4%
5/15
Fri Sep 18
12am
64°
 
4%
5/19
1am
64°
 
7%
5/19
2am
63°
 
7%
5/19
3am
63°
 
7%
5/18
4am
63°
 
7%
5/18
5am
62°
 
7%
5/18
6am
62°
 
7%
5/21
7am
62°
⚡
31%
10/21
8am
64°
⚡
31%
10/21
9am
66°
⚡
31%
10/20
10am
68°
⚡
31%
15/20
11am
69°
⚡
31%
15/20
12pm
69°
⚡
31%
15/16
1pm
70°
⚡
50%
10/16
Rows: time · temperature · conditions (⚡ storms, 🌧 likely rain, 🌦 chance) · precip % · wind mph/gusts. Hours beyond 48h are lower-confidence guidance.

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