Marietta Weather Forecast 15 Days, Weather in Marietta Today
Current weather conditions and 15 day weather forecast for Marietta, 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 Marietta
| 25 June 2026 Thursday 22.3 ° C / 72.1°F  Partly cloudy |
Feels Like : 24.7 ° C / 76.4°F Humidity : % 94 Pressure : 1015 mb Wind Speed : 4.7 kmph / 2.9 miles from W  Visibility : 16 km Precipitation (rainfall) : 0.07 mm Cloud (%) : 50 |
15 day weather forecast for Marietta, IL, USA
Weather Forecast for next 15 Days for Marietta 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 Marietta, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 24 June 2026 Wednesday |  Patchy rain nearby |
16.6 ° C (61.9°F) |
27.5 ° C (81.5°F) |
22.4 ° C (72.2°F) |
% 76 | 17% | 8.1 | Sunrise:05:32 AM Sunset: 08:35 PM |
Moonrise:04:16 PM Moonset: 01:43 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 June 2026 Thursday |  Sunny |
18 ° C (64.4°F) |
24.7 ° C (76.5°F) |
21 ° C (69.8°F) |
% 81 | 11% | 5.5 | Sunrise:05:32 AM Sunset: 08:36 PM |
Moonrise:05:23 PM Moonset: 02:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 June 2026 Friday |  Moderate rain |
17.5 ° C (63.5°F) |
19.8 ° C (67.7°F) |
18.4 ° C (65.2°F) |
% 92 | 88% | 5.1 | Sunrise:05:32 AM Sunset: 08:36 PM |
Moonrise:06:28 PM Moonset: 02:44 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 June 2026 Saturday | Patchy rain nearby |
17 ° C (62.6°F) |
24.8 ° C (76.7°F) |
20.9 ° C (69.6°F) |
% 93 | 85% | 6.6 | Sunrise:05:33 AM Sunset: 08:36 PM |
Moonrise:07:29 PM Moonset: 03:24 AM Moon Phase ( Full Moon ) |
|
| 28 June 2026 Sunday | Patchy rain nearby |
19.7 ° C (67.5°F) |
31.1 ° C (88°F) |
25.6 ° C (78.1°F) |
% 86 | 69% | 10.2 | Sunrise:05:33 AM Sunset: 08:36 PM |
Moonrise:08:22 PM Moonset: 04:11 AM Moon Phase ( Full Moon ) |
|
| 29 June 2026 Monday | Sunny |
21.8 ° C (71.3°F) |
31.9 ° C (89.4°F) |
25.8 ° C (78.4°F) |
% 83 | 10% | 0.5 | Sunrise:05:33 AM Sunset: 08:36 PM |
Moonrise:09:08 PM Moonset: 05:05 AM Moon Phase ( Full Moon ) |
|
| 30 June 2026 Tuesday | Sunny |
23 ° C (73.4°F) |
32.8 ° C (91°F) |
27.6 ° C (81.7°F) |
% 81 | 9% | 7 | Sunrise:05:34 AM Sunset: 08:36 PM |
Moonrise:09:45 PM Moonset: 06:05 AM Moon Phase ( Full Moon ) |
|
| 01 July 2026 Wednesday | Sunny |
24.2 ° C (75.6°F) |
33.4 ° C (92.1°F) |
28.8 ° C (83.9°F) |
% 78 | 8% | 7 | Sunrise:05:34 AM Sunset: 08:36 PM |
Moonrise:10:16 PM Moonset: 07:07 AM Moon Phase ( Waning Gibbous ) |
|
| 02 July 2026 Thursday | Patchy rain nearby |
25.4 ° C (77.8°F) |
33.2 ° C (91.7°F) |
29.1 ° C (84.3°F) |
% 79 | 19% | 6 | Sunrise:05:35 AM Sunset: 08:35 PM |
Moonrise:10:41 PM Moonset: 08:10 AM Moon Phase ( Waning Gibbous ) |
|
| 03 July 2026 Friday | Patchy rain nearby |
24.7 ° C (76.5°F) |
32.9 ° C (91.2°F) |
28.6 ° C (83.4°F) |
% 81 | 38% | 6 | Sunrise:05:35 AM Sunset: 08:35 PM |
Moonrise:11:04 PM Moonset: 09:12 AM Moon Phase ( Waning Gibbous ) |
|
| 04 July 2026 Saturday | Sunny |
23.7 ° C (74.7°F) |
32.2 ° C (90°F) |
27.9 ° C (82.3°F) |
% 80 | 10% | 7 | Sunrise:05:36 AM Sunset: 08:35 PM |
Moonrise:11:24 PM Moonset: 10:13 AM Moon Phase ( Waning Gibbous ) |
|
| 05 July 2026 Sunday | Sunny |
23.9 ° C (75.1°F) |
33 ° C (91.4°F) |
28.2 ° C (82.8°F) |
% 80 | 9% | 7 | Sunrise:05:37 AM Sunset: 08:35 PM |
Moonrise:11:44 PM Moonset: 11:13 AM Moon Phase ( Last Quarter ) |
|
| 06 July 2026 Monday | Sunny |
25 ° C (76.9°F) |
33.9 ° C (93°F) |
28.7 ° C (83.6°F) |
% 80 | 13% | 7 | Sunrise:05:37 AM Sunset: 08:35 PM |
Moonrise:Does not rise today Moonset: 12:14 PM Moon Phase ( Last Quarter ) |
|
| 07 July 2026 Tuesday | Sunny |
19.4 ° C (67°F) |
27.4 ° C (81.2°F) |
23.4 ° C (74.1°F) |
% 72 | 6% | 6 | Sunrise:05:38 AM Sunset: 08:34 PM |
Moonrise:12:04 AM Moonset: 01:18 PM Moon Phase ( Last Quarter ) |
|
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