Sullivan Weather Forecast 15 Days, Weather in Sullivan Today
Current weather conditions and 15 day weather forecast for Sullivan, 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 Sullivan
| 25 March 2026 Wednesday 21.1 ° C / 70°F  Sunny |
Feels Like : 21.1 ° C / 70°F Humidity : % 15 Pressure : 1015 mb Wind Speed : 23.8 kmph / 14.8 miles from SSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Sullivan, IL, USA
Weather Forecast for next 15 Days for Sullivan 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 Sullivan, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 25 March 2026 Wednesday |  Patchy rain nearby |
3 ° C (37.4°F) |
24.8 ° C (76.6°F) |
13.9 ° C (57°F) |
% 38 | 86% | 1.2 | Sunrise:06:48 AM Sunset: 07:11 PM |
Moonrise:11:06 AM Moonset: 02:23 AM Moon Phase ( First Quarter ) |
|
| 26 March 2026 Thursday |  Heavy rain |
6 ° C (42.7°F) |
28.2 ° C (82.8°F) |
16.5 ° C (61.7°F) |
% 86 | 86% | 1.5 | Sunrise:06:46 AM Sunset: 07:12 PM |
Moonrise:12:17 PM Moonset: 03:19 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday |  Moderate rain |
0.6 ° C (33.1°F) |
10.9 ° C (51.6°F) |
4.7 ° C (40.5°F) |
% 71 | 74% | 1.6 | Sunrise:06:45 AM Sunset: 07:13 PM |
Moonrise:01:31 PM Moonset: 04:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Sunny |
-2.2 ° C (28°F) |
9.2 ° C (48.6°F) |
3.5 ° C (38.2°F) |
% 48 | 0% | 1.5 | Sunrise:06:43 AM Sunset: 07:14 PM |
Moonrise:02:44 PM Moonset: 04:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday |  Partly Cloudy |
4.1 ° C (39.3°F) |
11.9 ° C (53.5°F) |
7.8 ° C (46.1°F) |
% 56 | 0% | 0 | Sunrise:06:41 AM Sunset: 07:15 PM |
Moonrise:03:55 PM Moonset: 05:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday | Moderate rain |
10.1 ° C (50.1°F) |
19.5 ° C (67°F) |
15 ° C (59°F) |
% 77 | 69% | 3 | Sunrise:06:40 AM Sunset: 07:16 PM |
Moonrise:05:03 PM Moonset: 05:31 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday | Patchy rain nearby |
15.3 ° C (59.6°F) |
23.2 ° C (73.7°F) |
18.3 ° C (65°F) |
% 84 | 89% | 4 | Sunrise:06:38 AM Sunset: 07:17 PM |
Moonrise:06:09 PM Moonset: 05:52 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday | Moderate rain |
17.8 ° C (64°F) |
23.5 ° C (74.2°F) |
20 ° C (68°F) |
% 79 | 76% | 5 | Sunrise:06:36 AM Sunset: 07:18 PM |
Moonrise:07:14 PM Moonset: 06:12 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday | Patchy rain nearby |
16.8 ° C (62.3°F) |
22.5 ° C (72.5°F) |
19.5 ° C (67°F) |
% 80 | 76% | 4 | Sunrise:06:35 AM Sunset: 07:19 PM |
Moonrise:08:18 PM Moonset: 06:33 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday | Heavy rain |
3.5 ° C (38.2°F) |
23.3 ° C (74°F) |
15.1 ° C (59.2°F) |
% 86 | 87% | 4 | Sunrise:06:33 AM Sunset: 07:20 PM |
Moonrise:09:23 PM Moonset: 06:56 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday |  Cloudy |
-1.5 ° C (29.2°F) |
5.5 ° C (41.9°F) |
1.8 ° C (35.3°F) |
% 62 | 0% | 1 | Sunrise:06:31 AM Sunset: 07:21 PM |
Moonrise:10:28 PM Moonset: 07:22 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Sunny |
-2 ° C (28.4°F) |
8.6 ° C (47.5°F) |
3 ° C (37.3°F) |
% 58 | 0% | 2 | Sunrise:06:30 AM Sunset: 07:23 PM |
Moonrise:11:31 PM Moonset: 07:52 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday | Sunny |
4.1 ° C (39.4°F) |
15.9 ° C (60.6°F) |
9.6 ° C (49.2°F) |
% 55 | 0% | 3 | Sunrise:06:28 AM Sunset: 07:24 PM |
Moonrise:No moonrise Moonset: 08:27 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday | Patchy rain nearby |
8.5 ° C (47.2°F) |
15.8 ° C (60.4°F) |
11.1 ° C (52°F) |
% 76 | 65% | 3 | Sunrise:06:27 AM Sunset: 07:25 PM |
Moonrise:12:31 AM Moonset: 09:11 AM Moon Phase ( Waning Gibbous ) |
|
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