Flagg Weather Forecast 15 Days, Weather in Flagg Today
Current weather conditions and 15 day weather forecast for Flagg, 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 Flagg
| 24 March 2026 Tuesday -0.6 ° C / 30.9°F  Clear |
Feels Like : -5.2 ° C / 22.5°F Humidity : % 60 Pressure : 1030 mb Wind Speed : 15.5 kmph / 9.6 miles from SE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Flagg, IL, USA
Weather Forecast for next 15 Days for Flagg 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 Flagg, 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 March 2026 Monday | Sunny |
-3.6 ° C (25.5°F) |
10.7 ° C (51.3°F) |
2.9 ° C (37.3°F) |
% 51 | 0% | 1.1 | Sunrise:06:54 AM Sunset: 07:12 PM |
Moonrise:09:11 AM Moonset: 12:09 AM Moon Phase ( Waxing Crescent ) |
|
| 24 March 2026 Tuesday |  Partly Cloudy |
-3.3 ° C (26.1°F) |
7.1 ° C (44.8°F) |
2.5 ° C (36.4°F) |
% 56 | 0% | 0.9 | Sunrise:06:52 AM Sunset: 07:13 PM |
Moonrise:10:02 AM Moonset: 01:25 AM Moon Phase ( Waxing Crescent ) |
|
| 25 March 2026 Wednesday | Partly Cloudy |
3.4 ° C (38.1°F) |
19.9 ° C (67.8°F) |
11.1 ° C (52°F) |
% 71 | 0% | 1 | Sunrise:06:51 AM Sunset: 07:14 PM |
Moonrise:11:04 AM Moonset: 02:32 AM Moon Phase ( First Quarter ) |
|
| 26 March 2026 Thursday |  Overcast |
9.7 ° C (49.5°F) |
17.5 ° C (63.5°F) |
13.2 ° C (55.7°F) |
% 89 | 0% | 1.3 | Sunrise:06:49 AM Sunset: 07:16 PM |
Moonrise:12:15 PM Moonset: 03:28 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday | Partly Cloudy |
-0.6 ° C (30.9°F) |
5.9 ° C (42.6°F) |
3.7 ° C (38.6°F) |
% 55 | 0% | 1.5 | Sunrise:06:47 AM Sunset: 07:17 PM |
Moonrise:01:30 PM Moonset: 04:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Sunny |
-1.6 ° C (29.1°F) |
9.5 ° C (49°F) |
2.5 ° C (36.5°F) |
% 49 | 0% | 0 | Sunrise:06:46 AM Sunset: 07:18 PM |
Moonrise:02:44 PM Moonset: 04:44 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday | Partly Cloudy |
3.3 ° C (37.9°F) |
13.3 ° C (55.9°F) |
8.2 ° C (46.7°F) |
% 49 | 0% | 3 | Sunrise:06:44 AM Sunset: 07:19 PM |
Moonrise:03:57 PM Moonset: 05:12 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday | Partly Cloudy |
6 ° C (42.9°F) |
20.8 ° C (69.5°F) |
13.1 ° C (55.6°F) |
% 63 | 0% | 4 | Sunrise:06:42 AM Sunset: 07:20 PM |
Moonrise:05:06 PM Moonset: 05:35 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday |  Patchy rain nearby |
15.8 ° C (60.5°F) |
18.6 ° C (65.5°F) |
17.3 ° C (63.2°F) |
% 84 | 89% | 4 | Sunrise:06:40 AM Sunset: 07:21 PM |
Moonrise:06:12 PM Moonset: 05:56 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday | Patchy rain nearby |
17.1 ° C (62.8°F) |
26.9 ° C (80.4°F) |
20.8 ° C (69.5°F) |
% 73 | 89% | 5 | Sunrise:06:39 AM Sunset: 07:22 PM |
Moonrise:07:19 PM Moonset: 06:15 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday | Partly Cloudy |
15.9 ° C (60.7°F) |
24.4 ° C (76°F) |
19.8 ° C (67.6°F) |
% 74 | 0% | 5 | Sunrise:06:37 AM Sunset: 07:23 PM |
Moonrise:08:24 PM Moonset: 06:35 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday |  Moderate rain |
10.3 ° C (50.5°F) |
11.6 ° C (52.8°F) |
13 ° C (55.4°F) |
% 87 | 87% | 3 | Sunrise:06:35 AM Sunset: 07:24 PM |
Moonrise:09:30 PM Moonset: 06:57 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday | Patchy rain nearby |
8.7 ° C (47.7°F) |
17.4 ° C (63.4°F) |
15.1 ° C (59.1°F) |
% 68 | 0% | 4 | Sunrise:06:34 AM Sunset: 07:26 PM |
Moonrise:10:35 PM Moonset: 07:22 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Overcast |
0.2 ° C (32.3°F) |
5.4 ° C (41.6°F) |
2.9 ° C (37.2°F) |
% 58 | 0% | 1 | Sunrise:06:32 AM Sunset: 07:27 PM |
Moonrise:11:39 PM Moonset: 07:51 AM Moon Phase ( Waning Gibbous ) |
|
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