Summit Weather Forecast 15 Days, Weather in Summit Today
Current weather conditions and 15 day weather forecast for Summit, Illinois, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Summit
| 09 May 2026 Saturday 14.5 ° C / 58.1°F  Heavy rain |
Feels Like : 14.4 ° C / 58°F Humidity : % 97 Pressure : 1010 mb Wind Speed : 7.2 kmph / 4.5 miles from E  Visibility : 6.4 km Precipitation (rainfall) : 0.55 mm Cloud (%) : 100 |
15 day weather forecast for Summit, IL, USA
Weather Forecast for next 15 Days for Summit including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Summit, Illinois state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 08 May 2026 Friday |  Moderate rain |
8 ° C (46.4°F) |
23.6 ° C (74.5°F) |
15.6 ° C (60°F) |
% 70 | 86% | 6.9 | Sunrise:05:48 AM Sunset: 07:54 PM |
Moonrise:01:22 AM Moonset: 11:01 AM Moon Phase ( Waning Gibbous ) |
|
| 09 May 2026 Saturday |  Sunny |
11.5 ° C (52.6°F) |
23.1 ° C (73.7°F) |
17.3 ° C (63.1°F) |
% 78 | 0% | 7.9 | Sunrise:05:47 AM Sunset: 07:55 PM |
Moonrise:01:52 AM Moonset: 12:05 PM Moon Phase ( Last Quarter ) |
|
| 10 May 2026 Sunday |  Patchy rain nearby |
11.7 ° C (53.1°F) |
18.6 ° C (65.4°F) |
14.8 ° C (58.7°F) |
% 73 | 88% | 5.8 | Sunrise:05:46 AM Sunset: 07:56 PM |
Moonrise:02:19 AM Moonset: 01:10 PM Moon Phase ( Waning Crescent ) |
|
| 11 May 2026 Monday | Sunny |
7.4 ° C (45.2°F) |
16.8 ° C (62.2°F) |
12.4 ° C (54.3°F) |
% 62 | 0% | 7.8 | Sunrise:05:45 AM Sunset: 07:57 PM |
Moonrise:02:43 AM Moonset: 02:16 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Patchy rain nearby |
7 ° C (44.7°F) |
19.1 ° C (66.4°F) |
13.5 ° C (56.3°F) |
% 70 | 75% | 0.3 | Sunrise:05:44 AM Sunset: 07:58 PM |
Moonrise:03:07 AM Moonset: 03:23 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Patchy rain nearby |
12.4 ° C (54.4°F) |
22.6 ° C (72.7°F) |
16 ° C (60.7°F) |
% 73 | 73% | 4 | Sunrise:05:43 AM Sunset: 07:59 PM |
Moonrise:03:31 AM Moonset: 04:33 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
9.4 ° C (49°F) |
21.3 ° C (70.4°F) |
15.1 ° C (59.2°F) |
% 67 | 0% | 5 | Sunrise:05:42 AM Sunset: 08:00 PM |
Moonrise:03:57 AM Moonset: 05:48 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday |  Partly Cloudy |
14.2 ° C (57.6°F) |
28.2 ° C (82.8°F) |
20.7 ° C (69.2°F) |
% 68 | 0% | 6 | Sunrise:05:41 AM Sunset: 08:01 PM |
Moonrise:04:27 AM Moonset: 07:07 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Sunny |
18 ° C (64.4°F) |
28.9 ° C (84°F) |
23.2 ° C (73.8°F) |
% 71 | 0% | 6 | Sunrise:05:40 AM Sunset: 08:02 PM |
Moonrise:05:04 AM Moonset: 08:27 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Sunny |
19 ° C (66.3°F) |
29 ° C (84.2°F) |
23.7 ° C (74.7°F) |
% 69 | 0% | 6 | Sunrise:05:40 AM Sunset: 08:03 PM |
Moonrise:05:50 AM Moonset: 09:45 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Patchy rain nearby |
15.7 ° C (60.2°F) |
22.8 ° C (73°F) |
20.3 ° C (68.6°F) |
% 73 | 83% | 5 | Sunrise:05:39 AM Sunset: 08:03 PM |
Moonrise:06:48 AM Moonset: 10:54 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Sunny |
9.1 ° C (48.4°F) |
17.7 ° C (63.8°F) |
13.1 ° C (55.5°F) |
% 62 | 0% | 4 | Sunrise:05:38 AM Sunset: 08:04 PM |
Moonrise:07:57 AM Moonset: 11:51 PM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Sunny |
7.5 ° C (45.6°F) |
18.9 ° C (66.1°F) |
13.1 ° C (55.5°F) |
% 63 | 0% | 4 | Sunrise:05:37 AM Sunset: 08:05 PM |
Moonrise:09:13 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday | Sunny |
10.1 ° C (50.2°F) |
23.4 ° C (74.2°F) |
16.8 ° C (62.2°F) |
% 65 | 0% | 5 | Sunrise:05:37 AM Sunset: 08:06 PM |
Moonrise:10:28 AM Moonset: 12:35 AM Moon Phase ( Waxing Crescent ) |
|
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