Summit — Weather

Live · Clear within 100 km Just updated
Overcast
16°C 61°F · Overcast · 100% cloud cover
Feels like 15°C59°F · Low 15°C60°F · High 30°C87°F
Wind
5 km/h3 mph from SW
Humidity
64%
Pressure
1021 hPa30.15 inHg stable
UV Index
0.1 Low

Storm — rain + thunderstorms

Summit: 16°C, overcast now.

⛈️ Wet period, low-intensity Friday–Saturday, with rain and embedded thunderstorms. Total ~5.2 mm. Peak Friday (2.8 mm). Below the monthly normal (104 mm/month).

🔥 Today reaches 30°C — 9.2°C markedly warmer than what's typical for June (21°C).

🌡️ Warming front around 10:00; temperatures rise ~9°C.

Hourly forecast

Detailed forecast for the next 60 hours

10°C 50°F 15°C 59°F 20°C 68°F 25°C 77°F 30°C 86°F 35°C 95°F 0mm 0.00in 0.2mm 0.01in 0.4mm 0.02in 0.6mm 0.02in 0.8mm 0.03in 1mm 0.04in 1.2mm 0.05in 04:0010:0016:0022:0004:0010:0016:0022:0006:0012:0015:00
Temperature Precipitation Wind
Now
Overcast
16°C 61°F
5 3
64
05:00
Overcast
16°C 60°F
5 3
66
06:00
Overcast
15°C 60°F
5 3
68
07:00
Overcast
17°C 63°F
5 3
63
08:00
Overcast
20°C 68°F
7 4
56
09:00
Overcast
23°C 73°F
9 6
50
10:00
Overcast
25°C 77°F
11 7
45
11:00
Overcast
27°C 80°F
14 9
38
12:00
Overcast
28°C 82°F
15 9
33
13:00
Overcast
29°C 84°F
15 9
30
14:00
Overcast
30°C 86°F
15 9
28
15:00
Overcast
30°C 87°F
15 10
26
16:00
Overcast
30°C 87°F
16 10
27
17:00
Clear
30°C 86°F
16 10
29
18:00
Partly cloudy
30°C 86°F
15 10
30
19:00
Partly cloudy
29°C 84°F
14 9
34
20:00
Overcast
27°C 81°F
11 7
39
21:00
Overcast
25°C 78°F
8 5
46
22:00
Overcast
24°C 76°F
9 5
49
23:00
Clear
23°C 73°F
8 5
53
00:00
Clear
22°C 71°F
7 5
58
01:00
Partly cloudy
21°C 70°F
9 5
61
02:00
Partly cloudy
21°C 69°F
9 6
62
03:00
Partly cloudy
20°C 68°F
9 6
63
04:00
Overcast
20°C 67°F
9 6
65
05:00
Overcast
20°C 67°F
9 6
67
06:00
Partly cloudy
19°C 67°F
10 6
70
07:00
Partly cloudy
21°C 69°F
10 6
68
08:00
Partly cloudy
22°C 72°F
12 8
63
09:00
Partly cloudy
24°C 76°F
14 9
58
10:00
Partly cloudy
25°C 78°F
16 10
56
11:00
Overcast
27°C 81°F
18 11
50
12:00
Overcast
28°C 83°F
21 13
49
13:00
Drizzle
28°C 83°F
22 14
49
14:00
Drizzle
28°C 82°F
21 13
53
15:00
Light rain
26°C 79°F
0.4 0.02
19 12
64
16:00
Light rain
24°C 76°F
0.7 0.03
16 10
78
17:00
Overcast
25°C 77°F
19 12
72
18:00
Overcast
26°C 78°F
20 12
69
19:00
Overcast
25°C 77°F
17 10
71
20:00
Overcast
25°C 77°F
11 7
73
21:00
Partly cloudy
24°C 75°F
7 5
77
22:00
Light rain
23°C 73°F
0.9 0.04
11 7
84
23:00
Thunderstorm
22°C 71°F
0.6 0.03
13 8
87
00:00
Rain
21°C 70°F
1.1 0.04
16 10
85
03:00
Overcast
21°C 69°F
8 5
93
06:00
Overcast
20°C 69°F
6 4
95
09:00
Light rain
22°C 71°F
10 6
88
12:00
Light rain
24°C 76°F
7 5
79
15:00
Light rain
26°C 79°F
0.2 0.01
10 6
72
mmin km/hmph Humidity %

Daily Forecast

Overcast
Today
· Overcast
SW 16 km/h 10 mph (3823) 45% UV 3
15°C 60°F
30°C 87°F
Today
Overcast
Overcast
45%
SW 16 km/h 10 mph
15°C 60°F
30°C 87°F
Thunderstorm
Tomorrow
· Thunderstorm
2.8 mm 0.11 in SW 22 km/h 14 mph (6239) 65% UV 2
19°C 67°F
28°C 83°F
Tomorrow
Thunderstorm
Thunderstorm
65%
SW 22 km/h 14 mph
2.8 mm 0.11 in
19°C 67°F
28°C 83°F
Rain
Saturday
· Rain
2.4 mm 0.10 in SW 16 km/h 10 mph (3824) 83% UV 2
20°C 69°F
27°C 80°F
Saturday
Rain
Rain
83%
SW 16 km/h 10 mph
2.4 mm 0.10 in
20°C 69°F
27°C 80°F
Overcast
Sunday
· Overcast
0.8 mm 0.03 in E 15 km/h 9 mph (2717) 74% UV 1
20°C 67°F
28°C 83°F
Sunday
Overcast
Overcast
74%
E 15 km/h 9 mph
0.8 mm 0.03 in
20°C 67°F
28°C 83°F
Light rain
Monday
· Light rain
2.9 mm 0.11 in SE 15 km/h 9 mph (3421) 78% UV 1
20°C 68°F
28°C 83°F
Monday
Light rain
Light rain
78%
SE 15 km/h 9 mph
2.9 mm 0.11 in
20°C 68°F
28°C 83°F
Light rain
Tuesday
· Light rain
3.6 mm 0.14 in SE 11 km/h 7 mph (3622) 81% UV 1
22°C 72°F
28°C 82°F
Tuesday
Light rain
Light rain
81%
SE 11 km/h 7 mph
3.6 mm 0.14 in
22°C 72°F
28°C 82°F
Drizzle
Wednesday
· Drizzle
5.5 mm 0.22 in · heavy S 11 km/h 7 mph (2817) 83% UV 1
22°C 72°F
30°C 85°F
Wednesday
Drizzle
Drizzle
83%
S 11 km/h 7 mph
5.5 mm 0.22 in
22°C 72°F
30°C 85°F
Light rain
Thursday
· Light rain
1.4 mm 0.05 in SE 11 km/h 7 mph (2314) 87% UV 1
22°C 72°F
25°C 78°F
Thursday
Light rain
Light rain
87%
SE 11 km/h 7 mph
1.4 mm 0.05 in
22°C 72°F
25°C 78°F
Clear
Friday
· Clear
E 14 km/h 9 mph (2616) 76%
21°C 69°F
29°C 85°F
Friday
Clear
Clear
76%
E 14 km/h 9 mph
21°C 69°F
29°C 85°F
Clear
Saturday
· Clear
S 12 km/h 7 mph (2515) 72%
22°C 71°F
30°C 87°F
Saturday
Clear
Clear
72%
S 12 km/h 7 mph
22°C 71°F
30°C 87°F
Light rain
Sunday
· Light rain
1.4 mm 0.05 in W 20 km/h 12 mph (4327) 75%
24°C 74°F
29°C 85°F
Sunday
Light rain
Light rain
75%
W 20 km/h 12 mph
1.4 mm 0.05 in
24°C 74°F
29°C 85°F
Overcast
Monday
· Overcast
NE 15 km/h 9 mph 59%
21°C 70°F
30°C 86°F
Monday
Overcast
Overcast
59%
NE 15 km/h 9 mph
21°C 70°F
30°C 86°F
Clear
Tuesday
· Clear
S 18 km/h 11 mph (3320) 66%
21°C 70°F
32°C 89°F
Tuesday
Clear
Clear
66%
S 18 km/h 11 mph
21°C 70°F
32°C 89°F
Heavy rain
Wednesday
· Heavy rain
90.0 mm 3.54 in · heavy SW 21 km/h 13 mph (6339) 83%
21°C 70°F
28°C 82°F
Wednesday
Heavy rain
Heavy rain
83%
SW 21 km/h 13 mph
90.0 mm 3.54 in
21°C 70°F
28°C 82°F
Light rain
Thursday
· Light rain
1.5 mm 0.06 in W 25 km/h 15 mph (4729) 71%
17°C 63°F
26°C 78°F
Thursday
Light rain
Light rain
71%
W 25 km/h 15 mph
1.5 mm 0.06 in
17°C 63°F
26°C 78°F
Clear
Friday
· Clear
S 24 km/h 15 mph (5031) 68%
19°C 66°F
29°C 84°F
Friday
Clear
Clear
68%
S 24 km/h 15 mph
19°C 66°F
29°C 84°F
Sunrise
05:17 AM
Civil Dawn 04:47 AM
Sunset
08:21 PM
Civil Dusk 08:51 PM
Today vs. seasonal normal
+3.1°C+5.5°F
High 27.4°C81°F · Low 15.2°C59°F · Normal for this month
AQI
28 · Fair
Pollen
4 · Very High
Fire Risk
0 · Very low
Very low

Summit is located in Illinois, United States. Elevation: 187m. Annual average temperature: 10°C. Annual precipitation: 955mm.

Clouds Last updated 02:00 AM
Clouds weather map
0% 100%
Precipitation Last updated 02:00 AM
Precipitation weather map
0 10+ mm/h
Temperature Last updated 02:00 AM
Temperature weather map
−20° 40°

Frequently Asked Questions

What is the weather like in Summit today?
Today in Summit, United States, the temperature is 16°C with Overcast. The high is 30°C and the low is 15°C.

What is the 16-day forecast for Summit?
The 16-day forecast for Summit shows the warmest day is Tuesday at 32°C, while the coolest night is Thursday at 15°C. 10 day(s) have precipitation expected.

What time is sunrise and sunset in Summit?
In Summit, sunrise is at 12:17 PM and sunset is at 03:21 AM. Day length is approximately 15h 3m.

How accurate is the weather forecast for Summit?
Our forecasts for Summit use the DWD ICON model, one of the world's most advanced weather prediction systems. Accuracy is typically 85-90% for 1-3 day forecasts. Summit has an annual average temperature of 10°C and receives 955mm of precipitation per year.

Last updated: 06/04/2026, 04:00 AM

June climate in Summit

Normals for June: average 21°C (15–27°C), around 104 mm of rain across the month. About 11°C warmer than the annual average of 10°C.

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