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
| 06 August 2026 Thursday 20.2 ° C / 68.4°F  Mist |
Feels Like : 22.8 ° C / 73°F Humidity : % 95 Pressure : 1019 mb Wind Speed : 4.3 kmph / 2.7 miles from ESE  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 89 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 August 2026 Thursday |  Sunny |
16.3 ° C (61.3°F) |
28.3 ° C (82.9°F) |
21.9 ° C (71.5°F) |
% 86 | 33% | 5.2 | Sunrise:05:55 AM Sunset: 08:09 PM |
Moonrise:11:47 PM Moonset: 02:30 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday |  Patchy rain nearby |
19 ° C (66.1°F) |
27 ° C (80.6°F) |
22.5 ° C (72.5°F) |
% 91 | 83% | 7.8 | Sunrise:05:56 AM Sunset: 08:08 PM |
Moonrise:Does not rise today Moonset: 03:43 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday | Sunny |
17.2 ° C (63°F) |
27.4 ° C (81.3°F) |
22.3 ° C (72.1°F) |
% 80 | 36% | 6.4 | Sunrise:05:57 AM Sunset: 08:06 PM |
Moonrise:12:31 AM Moonset: 04:53 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday |  Thundery outbreaks in nearby |
18.9 ° C (66°F) |
23.6 ° C (74.6°F) |
21.2 ° C (70.1°F) |
% 94 | 86% | 7.8 | Sunrise:05:58 AM Sunset: 08:05 PM |
Moonrise:01:28 AM Moonset: 05:56 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Patchy rain nearby |
21.4 ° C (70.6°F) |
26.1 ° C (79°F) |
23.2 ° C (73.8°F) |
% 92 | 81% | 7 | Sunrise:05:59 AM Sunset: 08:04 PM |
Moonrise:02:38 AM Moonset: 06:48 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday |  Light rain shower |
17.8 ° C (64°F) |
25.7 ° C (78.2°F) |
21.1 ° C (70°F) |
% 95 | 90% | 6 | Sunrise:06:00 AM Sunset: 08:02 PM |
Moonrise:03:59 AM Moonset: 07:29 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday |  Fog |
16.6 ° C (61.9°F) |
26 ° C (78.8°F) |
21.4 ° C (70.6°F) |
% 90 | 72% | 6 | Sunrise:06:01 AM Sunset: 08:01 PM |
Moonrise:05:22 AM Moonset: 08:02 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Patchy rain nearby |
18 ° C (64.4°F) |
24.4 ° C (75.9°F) |
21.1 ° C (70°F) |
% 90 | 77% | 6 | Sunrise:06:02 AM Sunset: 08:00 PM |
Moonrise:06:45 AM Moonset: 08:29 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Sunny |
15.4 ° C (59.8°F) |
23.5 ° C (74.3°F) |
18.6 ° C (65.5°F) |
% 87 | 76% | 6 | Sunrise:06:03 AM Sunset: 07:58 PM |
Moonrise:08:05 AM Moonset: 08:53 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Patchy rain nearby |
16.3 ° C (61.4°F) |
20 ° C (67.9°F) |
18.2 ° C (64.7°F) |
% 97 | 92% | 4 | Sunrise:06:04 AM Sunset: 07:57 PM |
Moonrise:09:22 AM Moonset: 09:16 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Fog |
16.8 ° C (62.2°F) |
22 ° C (71.6°F) |
19.4 ° C (67°F) |
% 94 | 76% | 5 | Sunrise:06:05 AM Sunset: 07:55 PM |
Moonrise:10:37 AM Moonset: 09:40 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Sunny |
13.5 ° C (56.4°F) |
21.2 ° C (70.2°F) |
17 ° C (62.6°F) |
% 84 | 14% | 6 | Sunrise:06:06 AM Sunset: 07:54 PM |
Moonrise:11:50 AM Moonset: 10:06 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Sunny |
12.2 ° C (54°F) |
22 ° C (71.6°F) |
16.9 ° C (62.4°F) |
% 85 | 12% | 6 | Sunrise:06:07 AM Sunset: 07:52 PM |
Moonrise:01:02 PM Moonset: 10:35 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday |  Partly Cloudy |
14 ° C (57.2°F) |
24 ° C (75.1°F) |
19 ° C (66.2°F) |
% 88 | 16% | 6 | Sunrise:06:08 AM Sunset: 07:51 PM |
Moonrise:02:12 PM Moonset: 11:10 PM Moon Phase ( First Quarter ) |
|
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