Petersburg Weather Forecast 15 Days, Weather in Petersburg Today
Current weather conditions and 15 day weather forecast for Petersburg, 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 Petersburg
| 28 March 2026 Saturday 8.9 ° C / 48°F  Sunny |
Feels Like : 5.4 ° C / 41.7°F Humidity : % 35 Pressure : 1033 mb Wind Speed : 27 kmph / 16.8 miles from NNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Petersburg, IL, USA
Weather Forecast for next 15 Days for Petersburg 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 Petersburg, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 27 March 2026 Friday |  Patchy rain nearby |
1.3 ° C (34.3°F) |
12.2 ° C (54°F) |
5.6 ° C (42.1°F) |
% 70 | 89% | 1.7 | Sunrise:06:51 AM Sunset: 07:19 PM |
Moonrise:01:40 PM Moonset: 04:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Sunny |
-2.5 ° C (27.5°F) |
13.9 ° C (57°F) |
5.4 ° C (41.8°F) |
% 52 | 0% | 1.5 | Sunrise:06:50 AM Sunset: 07:20 PM |
Moonrise:02:52 PM Moonset: 04:42 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday |  Cloudy |
4.2 ° C (39.6°F) |
15.3 ° C (59.5°F) |
9.8 ° C (49.7°F) |
% 60 | 0% | 0.9 | Sunrise:06:48 AM Sunset: 07:21 PM |
Moonrise:04:03 PM Moonset: 05:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 March 2026 Monday |  Partly Cloudy |
11.4 ° C (52.5°F) |
24.2 ° C (75.6°F) |
17 ° C (62.7°F) |
% 68 | 0% | 1.5 | Sunrise:06:46 AM Sunset: 07:22 PM |
Moonrise:05:10 PM Moonset: 05:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 March 2026 Tuesday |  Moderate rain |
12.5 ° C (54.5°F) |
27.1 ° C (80.7°F) |
20.5 ° C (68.8°F) |
% 69 | 63% | 1.1 | Sunrise:06:45 AM Sunset: 07:23 PM |
Moonrise:06:15 PM Moonset: 05:58 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 April 2026 Wednesday | Patchy rain nearby |
9.2 ° C (48.5°F) |
13.8 ° C (56.9°F) |
11.3 ° C (52.3°F) |
% 68 | 61% | 0 | Sunrise:06:43 AM Sunset: 07:24 PM |
Moonrise:07:20 PM Moonset: 06:19 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 April 2026 Thursday | Moderate rain |
3.6 ° C (38.5°F) |
5.3 ° C (41.6°F) |
4.6 ° C (40.4°F) |
% 89 | 88% | 1 | Sunrise:06:41 AM Sunset: 07:25 PM |
Moonrise:08:24 PM Moonset: 06:41 AM Moon Phase ( Full Moon ) |
|
| 03 April 2026 Friday | Patchy rain nearby |
2.8 ° C (37°F) |
17.1 ° C (62.8°F) |
9.7 ° C (49.4°F) |
% 85 | 87% | 2 | Sunrise:06:40 AM Sunset: 07:26 PM |
Moonrise:09:28 PM Moonset: 07:04 AM Moon Phase ( Waning Gibbous ) |
|
| 04 April 2026 Saturday | Patchy rain nearby |
5.8 ° C (42.5°F) |
10.7 ° C (51.3°F) |
10.2 ° C (50.4°F) |
% 71 | 89% | 3 | Sunrise:06:38 AM Sunset: 07:27 PM |
Moonrise:10:32 PM Moonset: 07:30 AM Moon Phase ( Waning Gibbous ) |
|
| 05 April 2026 Sunday | Sunny |
0.8 ° C (33.5°F) |
11.4 ° C (52.4°F) |
6.1 ° C (42.9°F) |
% 59 | 0% | 3 | Sunrise:06:37 AM Sunset: 07:28 PM |
Moonrise:11:35 PM Moonset: 08:00 AM Moon Phase ( Waning Gibbous ) |
|
| 06 April 2026 Monday | Sunny |
5 ° C (40.9°F) |
17.3 ° C (63.1°F) |
10.5 ° C (51°F) |
% 62 | 0% | 4 | Sunrise:06:35 AM Sunset: 07:29 PM |
Moonrise:No moonrise Moonset: 08:37 AM Moon Phase ( Waning Gibbous ) |
|
| 07 April 2026 Tuesday | Partly Cloudy |
7.1 ° C (44.8°F) |
16.5 ° C (61.7°F) |
11.3 ° C (52.3°F) |
% 79 | 0% | 4 | Sunrise:06:33 AM Sunset: 07:30 PM |
Moonrise:12:34 AM Moonset: 09:20 AM Moon Phase ( Waning Gibbous ) |
|
| 08 April 2026 Wednesday | Patchy rain nearby |
10.3 ° C (50.6°F) |
15.5 ° C (59.9°F) |
12.9 ° C (55.2°F) |
% 83 | 85% | 3 | Sunrise:06:32 AM Sunset: 07:31 PM |
Moonrise:01:29 AM Moonset: 10:11 AM Moon Phase ( Waning Gibbous ) |
|
| 09 April 2026 Thursday | Sunny |
1.3 ° C (34.3°F) |
10.5 ° C (50.9°F) |
6.2 ° C (43.2°F) |
% 52 | 0% | 3 | Sunrise:06:30 AM Sunset: 07:32 PM |
Moonrise:02:16 AM Moonset: 11:09 AM Moon Phase ( Waning Gibbous ) |
|
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