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
| 21 February 2026 Saturday -6.7 ° C / 19.9°F  Cloudy |
Feels Like : -13.3 ° C / 8°F Humidity : % 92 Pressure : 1018 mb Wind Speed : 18 kmph / 11.2 miles from WNW  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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 21 February 2026 Saturday | Cloudy |
-6.9 ° C (19.6°F) |
0.8 ° C (33.4°F) |
-3.3 ° C (26.1°F) |
% 72 | 0% | 0.4 | Sunrise:06:45 AM Sunset: 05:40 PM |
Moonrise:08:31 AM Moonset: 10:48 PM Moon Phase ( Waxing Crescent ) |
|
| 22 February 2026 Sunday |  Overcast |
-6.5 ° C (20.4°F) |
-3.3 ° C (26.1°F) |
-4.2 ° C (24.5°F) |
% 61 | 0% | 0.5 | Sunrise:06:43 AM Sunset: 05:41 PM |
Moonrise:08:59 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 23 February 2026 Monday |  Sunny |
-7.9 ° C (17.8°F) |
0.1 ° C (32.2°F) |
-5 ° C (23.1°F) |
% 54 | 0% | 0.6 | Sunrise:06:42 AM Sunset: 05:42 PM |
Moonrise:09:33 AM Moonset: 12:04 AM Moon Phase ( Waxing Crescent ) |
|
| 24 February 2026 Tuesday | Overcast |
-6.2 ° C (20.8°F) |
5.2 ° C (41.4°F) |
-0.8 ° C (30.6°F) |
% 56 | 0% | 0.4 | Sunrise:06:40 AM Sunset: 05:43 PM |
Moonrise:10:16 AM Moonset: 01:21 AM Moon Phase ( First Quarter ) |
|
| 25 February 2026 Wednesday | Overcast |
-1.3 ° C (29.7°F) |
6.3 ° C (43.3°F) |
1.9 ° C (35.4°F) |
% 72 | 0% | 0 | Sunrise:06:39 AM Sunset: 05:44 PM |
Moonrise:11:10 AM Moonset: 02:34 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 February 2026 Thursday |  Patchy rain nearby |
0.1 ° C (32.1°F) |
3.6 ° C (38.4°F) |
1.5 ° C (34.8°F) |
% 75 | 85% | 1 | Sunrise:06:37 AM Sunset: 05:46 PM |
Moonrise:12:15 PM Moonset: 03:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 February 2026 Friday | Sunny |
-3.6 ° C (25.5°F) |
7 ° C (44.7°F) |
1.1 ° C (33.9°F) |
% 62 | 0% | 2 | Sunrise:06:36 AM Sunset: 05:47 PM |
Moonrise:01:29 PM Moonset: 04:30 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 February 2026 Saturday | Sunny |
1.7 ° C (35°F) |
15.7 ° C (60.2°F) |
7.8 ° C (46°F) |
% 57 | 0% | 3 | Sunrise:06:34 AM Sunset: 05:48 PM |
Moonrise:02:45 PM Moonset: 05:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 March 2026 Sunday | Overcast |
0 ° C (32.1°F) |
5.7 ° C (42.3°F) |
3.1 ° C (37.5°F) |
% 43 | 0% | 1 | Sunrise:06:33 AM Sunset: 05:49 PM |
Moonrise:04:01 PM Moonset: 05:44 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 March 2026 Monday | Patchy rain nearby |
2.5 ° C (36.5°F) |
12.8 ° C (55.1°F) |
6.8 ° C (44.2°F) |
% 76 | 83% | 2 | Sunrise:06:31 AM Sunset: 05:50 PM |
Moonrise:05:13 PM Moonset: 06:10 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 March 2026 Tuesday |  Partly Cloudy |
-1.8 ° C (28.8°F) |
7.9 ° C (46.2°F) |
3.1 ° C (37.6°F) |
% 66 | 0% | 2 | Sunrise:06:29 AM Sunset: 05:52 PM |
Moonrise:06:22 PM Moonset: 06:32 AM Moon Phase ( Full Moon ) |
|
| 04 March 2026 Wednesday | Patchy rain nearby |
1.4 ° C (34.6°F) |
9.8 ° C (49.7°F) |
5.6 ° C (42°F) |
% 71 | 84% | 2 | Sunrise:06:28 AM Sunset: 05:53 PM |
Moonrise:07:30 PM Moonset: 06:53 AM Moon Phase ( Waning Gibbous ) |
|
| 05 March 2026 Thursday | Partly Cloudy |
2.9 ° C (37.2°F) |
16.8 ° C (62.2°F) |
9.9 ° C (49.8°F) |
% 64 | 0% | 3 | Sunrise:06:26 AM Sunset: 05:54 PM |
Moonrise:08:35 PM Moonset: 07:13 AM Moon Phase ( Waning Gibbous ) |
|
| 06 March 2026 Friday | Partly Cloudy |
8.1 ° C (46.6°F) |
18.3 ° C (65°F) |
13.6 ° C (56.4°F) |
% 57 | 0% | 4 | Sunrise:06:25 AM Sunset: 05:55 PM |
Moonrise:09:41 PM Moonset: 07:34 AM Moon Phase ( Waning Gibbous ) |
|
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