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
| 23 June 2026 Tuesday 15.2 ° C / 59.4°F  Clear |
Feels Like : 15.2 ° C / 59.4°F Humidity : % 100 Pressure : 1021 mb Wind Speed : 11.2 kmph / 6.9 miles from NNE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 23 June 2026 Tuesday | Sunny |
13.9 ° C (57°F) |
26.7 ° C (80.1°F) |
20 ° C (67.9°F) |
% 69 | 6% | 9.2 | Sunrise:05:29 AM Sunset: 08:24 PM |
Moonrise:02:58 PM Moonset: 01:13 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 June 2026 Wednesday |  Patchy rain nearby |
14.8 ° C (58.6°F) |
26 ° C (78.9°F) |
20.6 ° C (69°F) |
% 76 | 19% | 8.9 | Sunrise:05:29 AM Sunset: 08:24 PM |
Moonrise:04:05 PM Moonset: 01:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 June 2026 Thursday |  Moderate rain |
19.8 ° C (67.6°F) |
28.9 ° C (84°F) |
23.8 ° C (74.8°F) |
% 82 | 84% | 9.9 | Sunrise:05:29 AM Sunset: 08:24 PM |
Moonrise:05:11 PM Moonset: 02:08 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 June 2026 Friday |  Heavy rain |
20 ° C (68°F) |
27.5 ° C (81.5°F) |
22.7 ° C (72.9°F) |
% 91 | 91% | 10 | Sunrise:05:30 AM Sunset: 08:24 PM |
Moonrise:06:16 PM Moonset: 02:42 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 June 2026 Saturday | Moderate rain |
20.8 ° C (69.4°F) |
31 ° C (87.8°F) |
23.7 ° C (74.7°F) |
% 91 | 87% | 0.3 | Sunrise:05:30 AM Sunset: 08:24 PM |
Moonrise:07:16 PM Moonset: 03:22 AM Moon Phase ( Full Moon ) |
|
| 28 June 2026 Sunday | Sunny |
21.9 ° C (71.4°F) |
30.9 ° C (87.7°F) |
26.4 ° C (79.4°F) |
% 81 | 10% | 7 | Sunrise:05:31 AM Sunset: 08:24 PM |
Moonrise:08:09 PM Moonset: 04:10 AM Moon Phase ( Full Moon ) |
|
| 29 June 2026 Monday | Sunny |
22.8 ° C (73°F) |
32.9 ° C (91.1°F) |
27.6 ° C (81.7°F) |
% 80 | 10% | 7 | Sunrise:05:31 AM Sunset: 08:24 PM |
Moonrise:08:55 PM Moonset: 05:04 AM Moon Phase ( Full Moon ) |
|
| 30 June 2026 Tuesday | Patchy rain nearby |
24.6 ° C (76.4°F) |
32.9 ° C (91.2°F) |
28.3 ° C (83°F) |
% 76 | 22% | 6 | Sunrise:05:31 AM Sunset: 08:24 PM |
Moonrise:09:33 PM Moonset: 06:03 AM Moon Phase ( Full Moon ) |
|
| 01 July 2026 Wednesday | Patchy rain nearby |
23.4 ° C (74.1°F) |
32.1 ° C (89.7°F) |
27.4 ° C (81.2°F) |
% 77 | 42% | 6 | Sunrise:05:32 AM Sunset: 08:24 PM |
Moonrise:10:05 PM Moonset: 07:04 AM Moon Phase ( Waning Gibbous ) |
|
| 02 July 2026 Thursday | Patchy rain nearby |
22.2 ° C (71.9°F) |
30.9 ° C (87.5°F) |
26.2 ° C (79.1°F) |
% 80 | 57% | 6 | Sunrise:05:32 AM Sunset: 08:24 PM |
Moonrise:10:31 PM Moonset: 08:06 AM Moon Phase ( Waning Gibbous ) |
|
| 03 July 2026 Friday | Sunny |
20.1 ° C (68.1°F) |
26.8 ° C (80.2°F) |
23.5 ° C (74.3°F) |
% 81 | 10% | 6 | Sunrise:05:33 AM Sunset: 08:24 PM |
Moonrise:10:55 PM Moonset: 09:07 AM Moon Phase ( Waning Gibbous ) |
|
| 04 July 2026 Saturday | Patchy rain nearby |
16.2 ° C (61.1°F) |
25.1 ° C (77.1°F) |
21.8 ° C (71.3°F) |
% 84 | 68% | 5 | Sunrise:05:33 AM Sunset: 08:23 PM |
Moonrise:11:16 PM Moonset: 10:07 AM Moon Phase ( Waning Gibbous ) |
|
| 05 July 2026 Sunday | Sunny |
11.2 ° C (52.1°F) |
23.6 ° C (74.6°F) |
17.7 ° C (63.9°F) |
% 67 | 6% | 5 | Sunrise:05:34 AM Sunset: 08:23 PM |
Moonrise:11:37 PM Moonset: 11:06 AM Moon Phase ( Last Quarter ) |
|
| 06 July 2026 Monday | Patchy rain nearby |
18.5 ° C (65.3°F) |
24.7 ° C (76.5°F) |
21.7 ° C (71.1°F) |
% 83 | 34% | 5 | Sunrise:05:35 AM Sunset: 08:23 PM |
Moonrise:11:58 PM Moonset: 12:07 PM Moon Phase ( Last Quarter ) |
|
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