Helvetia Weather Forecast 15 Days, Weather in Helvetia Today
Current weather conditions and 15 day weather forecast for Helvetia, 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 Helvetia
| 17 August 2026 Monday 23.1 ° C / 73.6°F  Patchy light drizzle |
Feels Like : 21.9 ° C / 71.4°F Humidity : % 95 Pressure : 1025 mb Wind Speed : 31.3 kmph / 19.5 miles from NNW  Visibility : 10 km Precipitation (rainfall) : 0.41 mm Cloud (%) : 61 |
15 day weather forecast for Helvetia, IL, USA
Weather Forecast for next 15 Days for Helvetia 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 Helvetia, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 August 2026 Monday |  Overcast |
12.2 ° C (54°F) |
31.1 ° C (88°F) |
20.5 ° C (68.8°F) |
% 82 | 81% | 8.8 | Sunrise:06:14 AM Sunset: 07:51 PM |
Moonrise:11:46 AM Moonset: 10:15 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Overcast |
12.4 ° C (54.3°F) |
13.3 ° C (56°F) |
12.9 ° C (55.1°F) |
% 89 | 79% | 8.9 | Sunrise:06:15 AM Sunset: 07:49 PM |
Moonrise:12:55 PM Moonset: 10:47 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Overcast |
11.1 ° C (52°F) |
13.2 ° C (55.8°F) |
11.8 ° C (53.3°F) |
% 84 | 72% | 7.5 | Sunrise:06:16 AM Sunset: 07:48 PM |
Moonrise:02:03 PM Moonset: 11:25 PM Moon Phase ( First Quarter ) |
|
| 20 August 2026 Thursday | Overcast |
10.1 ° C (50.3°F) |
12.4 ° C (54.3°F) |
10.9 ° C (51.5°F) |
% 77 | 48% | 2.2 | Sunrise:06:17 AM Sunset: 07:46 PM |
Moonrise:03:06 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 21 August 2026 Friday |  Patchy rain nearby |
11.6 ° C (52.9°F) |
12.6 ° C (54.6°F) |
12.2 ° C (53.9°F) |
% 88 | 68% | 3 | Sunrise:06:18 AM Sunset: 07:45 PM |
Moonrise:04:04 PM Moonset: 12:08 AM Moon Phase ( First Quarter ) |
|
| 22 August 2026 Saturday | Patchy rain nearby |
11.8 ° C (53.3°F) |
12.4 ° C (54.3°F) |
12.1 ° C (53.8°F) |
% 91 | 83% | 3 | Sunrise:06:18 AM Sunset: 07:44 PM |
Moonrise:04:55 PM Moonset: 12:59 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 August 2026 Sunday | Overcast |
12.1 ° C (53.7°F) |
12.7 ° C (54.9°F) |
12.3 ° C (54.1°F) |
% 90 | 72% | 3 | Sunrise:06:19 AM Sunset: 07:42 PM |
Moonrise:05:37 PM Moonset: 01:55 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 August 2026 Monday | Patchy rain nearby |
11.3 ° C (52.3°F) |
12.4 ° C (54.3°F) |
12 ° C (53.6°F) |
% 91 | 91% | 3 | Sunrise:06:20 AM Sunset: 07:41 PM |
Moonrise:06:13 PM Moonset: 02:54 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 August 2026 Tuesday | Patchy rain nearby |
10.3 ° C (50.6°F) |
11.2 ° C (52.2°F) |
10.9 ° C (51.6°F) |
% 78 | 81% | 3 | Sunrise:06:21 AM Sunset: 07:39 PM |
Moonrise:06:42 PM Moonset: 03:56 AM Moon Phase ( Full Moon ) |
|
| 26 August 2026 Wednesday | Patchy rain nearby |
10.5 ° C (50.9°F) |
11.1 ° C (52°F) |
10.9 ° C (51.6°F) |
% 70 | 44% | 4 | Sunrise:06:22 AM Sunset: 07:38 PM |
Moonrise:07:08 PM Moonset: 04:57 AM Moon Phase ( Full Moon ) |
|
| 27 August 2026 Thursday |  Light rain shower |
10 ° C (50°F) |
11.2 ° C (52.2°F) |
10.7 ° C (51.3°F) |
% 71 | 72% | 4 | Sunrise:06:23 AM Sunset: 07:36 PM |
Moonrise:07:31 PM Moonset: 05:58 AM Moon Phase ( Full Moon ) |
|
| 28 August 2026 Friday | Overcast |
9.5 ° C (49.2°F) |
9.9 ° C (49.8°F) |
9.7 ° C (49.4°F) |
% 62 | 15% | 2 | Sunrise:06:24 AM Sunset: 07:35 PM |
Moonrise:07:52 PM Moonset: 06:58 AM Moon Phase ( Full Moon ) |
|
| 29 August 2026 Saturday | Light rain shower |
8 ° C (46.4°F) |
10.5 ° C (50.9°F) |
9.6 ° C (49.2°F) |
% 70 | 79% | 3 | Sunrise:06:25 AM Sunset: 07:34 PM |
Moonrise:08:13 PM Moonset: 07:57 AM Moon Phase ( Waning Gibbous ) |
|
| 30 August 2026 Sunday | Patchy rain nearby |
8.3 ° C (46.9°F) |
9.5 ° C (49.1°F) |
9 ° C (48.2°F) |
% 61 | 36% | 3 | Sunrise:06:26 AM Sunset: 07:32 PM |
Moonrise:08:35 PM Moonset: 08:58 AM Moon Phase ( Waning Gibbous ) |
|
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