Summit, IL Hourly Weather Forecast
Next 48 Hours
Thu, Sep 17th 2026
Starting off partly cloudy, turning scattered showers later in the day. Temps range from 66° to 79°. Light winds, shifting from E to NNE at 7 mph, as humidity ranges 60% to 88%, and an avg barometric pressure of 30.19 inHg.
| Thu, Sep 17th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
1 PM Scattered Showers UV: 5.2 |
75°F Feels 77°F |
67% | 4 E | 30.21 | 62.7°F | 20% |
2 PM Partly Cloudy UV: 4.3 |
77°F Feels 80°F |
62% | 3.4 ENE | 30.18 | 63.4°F | 7% |
3 PM Partly CloudyUV: 3.3 |
79°F Feels 81°F |
60% | 3.6 ENE | 30.16 | 63.9°F | 7% |
4 PM Cloudy UV: 2.2 |
78°F Feels 80°F |
61% | 6.3 NE | 30.16 | 63.7°F | 11% |
5 PM Overcast UV: 1 |
74°F Feels 73°F |
67% | 8.5 NE | 30.16 | 62.4°F | 16% |
6 PM Scattered ShowersUV: 0.3 |
69°F Feels 69°F |
78% | 8.3 NE | 30.18 | 62.1°F | 25% |
7 PM Scattered Showers UV: 0 |
67°F Feels 67°F |
82% | 8.5 NNE | 30.19 | 61.7°F | 36% Rain est. 0.01in |
8 PM Scattered ShowersUV: 0 |
67°F Feels 66°F |
86% | 8.7 NNE | 30.21 | 62.2°F | 38% |
9 PM Overcast UV: 0 |
66°F Feels 65°F |
88% | 9.2 NNE | 30.22 | 62.2°F | 28% |
10 PM Cloudy UV: 0 |
66°F Feels 64°F |
86% | 8.7 NNE | 30.22 | 61.1°F | 23% |
11 PM CloudyUV: 0 |
66°F Feels 65°F |
82% | 8.3 NNE | 30.23 | 60.3°F | 21% |
Fri, Sep 18th 2026
Overcast conditions giving way to Clear conditions by evening. Temps range from 63° to 72°. Breezy wind, shifting from NE to SE at 8.4 mph, as humidity ranges 56% to 82%, and an avg barometric pressure of 30.18 inHg.
| Fri, Sep 18th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM Partly Cloudy UV: 0 |
66°F Feels 65°F |
81% | 7.8 NE | 30.22 | 59.8°F | 13% |
1 AM Scattered ShowersUV: 0 |
66°F Feels 64°F |
81% | 7.6 NE | 30.22 | 59.5°F | 23% |
2 AM Clear UV: 0 |
65°F Feels 64°F |
82% | 7.2 NE | 30.22 | 59.3°F | 10% |
3 AM ClearUV: 0 |
65°F Feels 64°F |
81% | 7.6 NE | 30.22 | 58.9°F | 10% |
4 AM ClearUV: 0 |
65°F Feels 63°F |
78% | 7.2 NE | 30.21 | 57.5°F | 9% |
5 AM ClearUV: 0 |
64°F Feels 62°F |
78% | 6.9 NE | 30.21 | 57°F | 9% |
6 AM ClearUV: 0 |
64°F Feels 61°F |
77% | 7.6 NE | 30.22 | 56.2°F | 8% |
7 AM OvercastUV: 0 |
63°F Feels 60°F |
75% | 8.1 ENE | 30.22 | 55.2°F | 19% |
8 AM Sunny UV: 0.2 |
65°F Feels 61°F |
70% | 8.7 ENE | 30.24 | 54.6°F | 6% |
9 AM SunnyUV: 1 |
67°F Feels 62°F |
62% | 10.5 ENE | 30.24 | 53.7°F | 4% |
10 AM OvercastUV: 3 |
69°F Feels 64°F |
58% | 10.3 ENE | 30.24 | 53.8°F | 13% |
11 AM Partly CloudyUV: 3 |
70°F Feels 66°F |
58% | 9.2 ENE | 30.24 | 54.4°F | 7% |
12 PM CloudyUV: 3.2 |
71°F Feels 68°F |
56% | 8.9 ENE | 30.22 | 54.8°F | 9% |
1 PM CloudyUV: 2.5 |
71°F Feels 68°F |
56% | 9.2 E | 30.2 | 54.9°F | 10% |
2 PM OvercastUV: 2.9 |
72°F Feels 68°F |
56% | 8.7 E | 30.18 | 55.4°F | 13% |
3 PM OvercastUV: 2.9 |
72°F Feels 68°F |
58% | 9.8 E | 30.15 | 55.8°F | 14% |
4 PM OvercastUV: 2.2 |
69°F Feels 66°F |
62% | 8.5 E | 30.15 | 55.6°F | 15% |
5 PM OvercastUV: 1 |
72°F Feels 69°F |
59% | 8.5 E | 30.13 | 56.5°F | 14% |
6 PM Partly CloudyUV: 0.3 |
70°F Feels 68°F |
63% | 7.8 E | 30.12 | 56.6°F | 7% |
7 PM Partly CloudyUV: 0 |
69°F Feels 67°F |
67% | 7.2 E | 30.12 | 57.1°F | 10% |
8 PM ClearUV: 0 |
68°F Feels 67°F |
70% | 6.3 E | 30.1 | 57.8°F | 6% |
9 PM ClearUV: 0 |
71°F Feels 71°F |
76% | 8.7 SE | 30.09 | 63.1°F | 8% |
10 PM ClearUV: 0 |
71°F Feels 70°F |
77% | 8.7 SE | 30.06 | 63°F | 8% |
11 PM ClearUV: 0 |
70°F Feels 69°F |
77% | 9.4 SE | 30.03 | 62.7°F | 8% |
Sat, Sep 19th 2026
Light rain shower giving way to scattered showers by evening. Temps range from 66° to 80°. Breezy wind, shifting from SSE to WSW at 7.4 mph, with humidity ranging 67% to 97%, and an avg barometric pressure of 29.96 inHg.
| Sat, Sep 19th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM ClearUV: 0 |
70°F Feels 69°F |
79% | 9.6 SSE | 30.02 | 62.7°F | 9% |
1 AM Scattered ShowersUV: 0 |
69°F Feels 69°F |
82% | 8.5 SSE | 30.02 | 62.9°F | 42% Rain est. 0.01in |
2 AM ClearUV: 0 |
68°F Feels 68°F |
88% | 8.1 SE | 30 | 64°F | 12% |
3 AM Scattered ShowersUV: 0 |
67°F Feels 67°F |
89% | 8.3 SE | 29.97 | 63.4°F | 36% |
4 AM Scattered ShowersUV: 0 |
66°F Feels 66°F |
89% | 8.1 SSE | 29.96 | 63°F | 45% Rain est. 0.01in |
5 AM OvercastUV: 0 |
66°F Feels 66°F |
91% | 8.5 SSE | 29.94 | 63.3°F | 30% |
6 AM Light Rain Shower UV: 0 |
66°F Feels 68°F |
94% | 6.3 S | 29.95 | 64.3°F | 75% Rain est. 0.06in |
7 AM Light Rain Shower UV: 0 |
67°F Feels 68°F |
97% | 6.7 SSE | 29.93 | 65.5°F | 68% Rain est. 0.02in |
8 AM Light Rain ShowerUV: 0.3 |
68°F Feels 72°F |
95% | 2.9 SW | 29.96 | 66.2°F | 74% Rain est. 0.06in |
9 AM OvercastUV: 0.6 |
70°F Feels 72°F |
93% | 6.7 SSW | 29.94 | 67.5°F | 32% |
10 AM Light Rain ShowerUV: 0.5 |
73°F Feels 76°F |
87% | 7.4 SW | 29.92 | 68.9°F | 52% Rain est. 0.02in |
11 AM CloudyUV: 0.8 |
77°F Feels 80°F |
78% | 7.2 SW | 29.91 | 69°F | 19% |
12 PM CloudyUV: 1.7 |
80°F Feels 83°F |
67% | 8.3 WSW | 29.9 | 68.3°F | 14% |
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