Piasa Weather Forecast 15 Days, Weather in Piasa Today
Current weather conditions and 15 day weather forecast for Piasa, 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 Piasa
| 14 May 2026 Thursday 10.5 ° C / 50.9°F  Clear |
Feels Like : 9.6 ° C / 49.3°F Humidity : % 79 Pressure : 1019 mb Wind Speed : 7.9 kmph / 4.9 miles from E  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Piasa, IL, USA
Weather Forecast for next 15 Days for Piasa 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 Piasa, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 May 2026 Thursday |  Patchy rain nearby |
9 ° C (48.2°F) |
21.8 ° C (71.2°F) |
15.7 ° C (60.2°F) |
% 56 | 71% | 8.4 | Sunrise:05:49 AM Sunset: 08:06 PM |
Moonrise:04:04 AM Moonset: 05:55 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Patchy rain nearby |
12.7 ° C (54.8°F) |
28.1 ° C (82.5°F) |
18.9 ° C (66.1°F) |
% 72 | 89% | 0.3 | Sunrise:05:48 AM Sunset: 08:07 PM |
Moonrise:04:34 AM Moonset: 07:13 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday | Patchy rain nearby |
18.4 ° C (65°F) |
30.4 ° C (86.8°F) |
23.5 ° C (74.4°F) |
% 74 | 83% | 5 | Sunrise:05:47 AM Sunset: 08:08 PM |
Moonrise:05:11 AM Moonset: 08:33 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Sunny |
18.7 ° C (65.7°F) |
29.2 ° C (84.6°F) |
23.8 ° C (74.9°F) |
% 67 | 0% | 6 | Sunrise:05:47 AM Sunset: 08:08 PM |
Moonrise:05:58 AM Moonset: 09:51 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday |  Moderate rain |
18.2 ° C (64.7°F) |
26.3 ° C (79.4°F) |
23 ° C (73.4°F) |
% 78 | 81% | 5 | Sunrise:05:46 AM Sunset: 08:09 PM |
Moonrise:06:56 AM Moonset: 11:00 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday | Patchy rain nearby |
14.8 ° C (58.6°F) |
22 ° C (71.5°F) |
17.9 ° C (64.3°F) |
% 75 | 84% | 4 | Sunrise:05:45 AM Sunset: 08:10 PM |
Moonrise:08:04 AM Moonset: 11:57 PM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Patchy rain nearby |
14.6 ° C (58.2°F) |
16.6 ° C (61.9°F) |
15.8 ° C (60.5°F) |
% 90 | 83% | 4 | Sunrise:05:44 AM Sunset: 08:11 PM |
Moonrise:09:20 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 21 May 2026 Thursday |  Heavy rain |
13.1 ° C (55.6°F) |
23.7 ° C (74.6°F) |
17.9 ° C (64.2°F) |
% 95 | 88% | 4 | Sunrise:05:43 AM Sunset: 08:12 PM |
Moonrise:10:35 AM Moonset: 12:41 AM Moon Phase ( Waxing Crescent ) |
|
| 22 May 2026 Friday | Moderate rain |
11.8 ° C (53.2°F) |
13.8 ° C (56.9°F) |
14 ° C (57.1°F) |
% 87 | 85% | 3 | Sunrise:05:43 AM Sunset: 08:13 PM |
Moonrise:11:49 AM Moonset: 01:16 AM Moon Phase ( Waxing Crescent ) |
|
| 23 May 2026 Saturday | Sunny |
8.5 ° C (47.4°F) |
19.5 ° C (67.1°F) |
14.1 ° C (57.4°F) |
% 71 | 0% | 4 | Sunrise:05:42 AM Sunset: 08:14 PM |
Moonrise:12:57 PM Moonset: 01:44 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Sunny |
10.7 ° C (51.3°F) |
23.6 ° C (74.5°F) |
17.8 ° C (64.1°F) |
% 73 | 0% | 5 | Sunrise:05:41 AM Sunset: 08:14 PM |
Moonrise:02:02 PM Moonset: 02:09 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 May 2026 Monday |  Partly Cloudy |
15.8 ° C (60.5°F) |
22.9 ° C (73.3°F) |
20.3 ° C (68.5°F) |
% 81 | 0% | 6 | Sunrise:05:41 AM Sunset: 08:15 PM |
Moonrise:03:05 PM Moonset: 02:31 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 May 2026 Tuesday | Patchy rain nearby |
21.2 ° C (70.1°F) |
30.2 ° C (86.3°F) |
24.8 ° C (76.6°F) |
% 82 | 88% | 5 | Sunrise:05:40 AM Sunset: 08:16 PM |
Moonrise:04:07 PM Moonset: 02:53 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 May 2026 Wednesday | Partly Cloudy |
21.5 ° C (70.7°F) |
30.5 ° C (86.8°F) |
25.2 ° C (77.4°F) |
% 76 | 0% | 7 | Sunrise:05:40 AM Sunset: 08:17 PM |
Moonrise:05:09 PM Moonset: 03:16 AM Moon Phase ( Waxing Gibbous ) |
|
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