Union Weather Forecast 15 Days, Weather in Union Today
Current weather conditions and 15 day weather forecast for Union, 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 Union
| 06 August 2026 Thursday 25.2 ° C / 77.4°F  Patchy rain nearby |
Feels Like : 26.3 ° C / 79.3°F Humidity : % 80 Pressure : 1021 mb Wind Speed : 17.3 kmph / 10.7 miles from SW  Visibility : 10 km Precipitation (rainfall) : 0.06 mm Cloud (%) : 78 |
15 day weather forecast for Union, IL, USA
Weather Forecast for next 15 Days for Union 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 Union, 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 |
20.2 ° C (68.4°F) |
28.8 ° C (83.8°F) |
24.1 ° C (75.3°F) |
% 80 | 71% | 5.3 | Sunrise:05:56 AM Sunset: 07:59 PM |
Moonrise:11:51 PM Moonset: 02:17 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday | Sunny |
20.4 ° C (68.7°F) |
29.5 ° C (85°F) |
24.3 ° C (75.7°F) |
% 86 | 75% | 7.9 | Sunrise:05:57 AM Sunset: 07:58 PM |
Moonrise:Does not rise today Moonset: 03:28 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday | Sunny |
20.1 ° C (68.2°F) |
29.4 ° C (84.8°F) |
24.7 ° C (76.4°F) |
% 81 | 10% | 7.3 | Sunrise:05:58 AM Sunset: 07:57 PM |
Moonrise:12:37 AM Moonset: 04:38 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
20.4 ° C (68.8°F) |
31.7 ° C (89°F) |
26.1 ° C (78.9°F) |
% 82 | 10% | 7.2 | Sunrise:05:59 AM Sunset: 07:55 PM |
Moonrise:01:35 AM Moonset: 05:41 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
21.2 ° C (70.1°F) |
31.6 ° C (88.8°F) |
26.4 ° C (79.4°F) |
% 79 | 9% | 8 | Sunrise:06:00 AM Sunset: 07:54 PM |
Moonrise:02:45 AM Moonset: 06:34 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
21.4 ° C (70.5°F) |
32.7 ° C (90.9°F) |
27.1 ° C (80.9°F) |
% 76 | 17% | 8 | Sunrise:06:01 AM Sunset: 07:53 PM |
Moonrise:04:03 AM Moonset: 07:17 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
20.2 ° C (68.4°F) |
30.9 ° C (87.6°F) |
24.6 ° C (76.3°F) |
% 85 | 81% | 8 | Sunrise:06:02 AM Sunset: 07:52 PM |
Moonrise:05:25 AM Moonset: 07:52 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday |  Partly Cloudy |
20.8 ° C (69.4°F) |
28.1 ° C (82.6°F) |
23.8 ° C (74.8°F) |
% 88 | 77% | 7 | Sunrise:06:03 AM Sunset: 07:50 PM |
Moonrise:06:45 AM Moonset: 08:22 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Partly Cloudy |
18.5 ° C (65.3°F) |
28.8 ° C (83.8°F) |
23.1 ° C (73.6°F) |
% 85 | 73% | 7 | Sunrise:06:04 AM Sunset: 07:49 PM |
Moonrise:08:02 AM Moonset: 08:49 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Patchy rain nearby |
21.8 ° C (71.2°F) |
29.8 ° C (85.6°F) |
25.2 ° C (77.4°F) |
% 87 | 83% | 7 | Sunrise:06:05 AM Sunset: 07:48 PM |
Moonrise:09:17 AM Moonset: 09:14 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday |  Mist |
21.4 ° C (70.6°F) |
27.5 ° C (81.5°F) |
23.5 ° C (74.3°F) |
% 93 | 87% | 7 | Sunrise:06:06 AM Sunset: 07:47 PM |
Moonrise:10:29 AM Moonset: 09:40 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday |  Cloudy |
17.2 ° C (63°F) |
24.9 ° C (76.8°F) |
20.9 ° C (69.6°F) |
% 90 | 57% | 6 | Sunrise:06:07 AM Sunset: 07:45 PM |
Moonrise:11:40 AM Moonset: 10:08 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday |  Fog |
15.7 ° C (60.3°F) |
24.2 ° C (75.6°F) |
19.9 ° C (67.8°F) |
% 87 | 30% | 5 | Sunrise:06:08 AM Sunset: 07:44 PM |
Moonrise:12:50 PM Moonset: 10:39 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Sunny |
16.2 ° C (61.1°F) |
26.4 ° C (79.5°F) |
20.8 ° C (69.4°F) |
% 81 | 10% | 7 | Sunrise:06:08 AM Sunset: 07:42 PM |
Moonrise:01:58 PM Moonset: 11:16 PM Moon Phase ( First Quarter ) |
|
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