Greenville Weather Forecast 15 Days, Weather in Greenville Today
Current weather conditions and 15 day weather forecast for Greenville, 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 Greenville
| 22 May 2026 Friday 21.7 ° C / 71.1°F  Sunny |
Feels Like : 21.7 ° C / 71.1°F Humidity : % 45 Pressure : 1015 mb Wind Speed : 22.7 kmph / 14.1 miles from ESE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Greenville, IL, USA
Weather Forecast for next 15 Days for Greenville 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 Greenville, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 22 May 2026 Friday |  Partly Cloudy |
10.4 ° C (50.7°F) |
24.2 ° C (75.6°F) |
17 ° C (62.6°F) |
% 53 | 0% | 7.3 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 23 May 2026 Saturday |  Patchy rain nearby |
14.3 ° C (57.7°F) |
24.1 ° C (75.3°F) |
19 ° C (66.3°F) |
% 72 | 88% | 7.5 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 24 May 2026 Sunday | Patchy rain nearby |
16.3 ° C (61.4°F) |
25.8 ° C (78.4°F) |
20.7 ° C (69.3°F) |
% 66 | 89% | 8.1 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 25 May 2026 Monday | Sunny |
14.9 ° C (58.8°F) |
28.3 ° C (82.9°F) |
21.5 ° C (70.8°F) |
% 66 | 0% | 8.1 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 26 May 2026 Tuesday | Sunny |
17.2 ° C (63°F) |
29.5 ° C (85.2°F) |
23.3 ° C (74°F) |
% 68 | 0% | 8.5 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 27 May 2026 Wednesday | Patchy rain nearby |
19.7 ° C (67.4°F) |
27.3 ° C (81.1°F) |
21.7 ° C (71°F) |
% 74 | 88% | 0.3 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 28 May 2026 Thursday | Partly Cloudy |
16.4 ° C (61.5°F) |
26.5 ° C (79.7°F) |
21 ° C (69.8°F) |
% 73 | 0% | 6 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 29 May 2026 Friday | Sunny |
13.6 ° C (56.5°F) |
24.6 ° C (76.3°F) |
18.5 ° C (65.4°F) |
% 59 | 0% | 5 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 30 May 2026 Saturday | Sunny |
9.7 ° C (49.5°F) |
18.5 ° C (65.3°F) |
13.7 ° C (56.7°F) |
% 56 | 0% | 4 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 31 May 2026 Sunday | Sunny |
9.3 ° C (48.7°F) |
19.3 ° C (66.8°F) |
13.8 ° C (56.9°F) |
% 62 | 0% | 4 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 01 June 2026 Monday | Sunny |
9.5 ° C (49.1°F) |
19 ° C (66.2°F) |
14.2 ° C (57.6°F) |
% 62 | 0% | 4 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 02 June 2026 Tuesday | Sunny |
10.7 ° C (51.3°F) |
25.1 ° C (77.1°F) |
18.1 ° C (64.6°F) |
% 65 | 0% | 5 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 03 June 2026 Wednesday | Sunny |
14.9 ° C (58.9°F) |
27.2 ° C (81°F) |
20.7 ° C (69.2°F) |
% 66 | 0% | 6 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
| 04 June 2026 Thursday | Sunny |
15.1 ° C (59.1°F) |
29 ° C (84.3°F) |
21.5 ° C (70.7°F) |
% 62 | 0% | 6 | Sunrise:05:33 AM Sunset: 08:17 PM |
Moonrise:11:18 AM Moonset: 01:09 AM Moon Phase ( First Quarter ) |
|
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