Lake Petersburg Weather Forecast 15 Days, Weather in Lake Petersburg Today
Current weather conditions and 15 day weather forecast for Lake 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 Lake Petersburg
| 17 December 2025 Wednesday 3.3 ° C / 37.9°F  Clear |
Feels Like : 0.5 ° C / 32.8°F Humidity : % 82 Pressure : 1014 mb Wind Speed : 10.8 kmph / 6.7 miles from W  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Lake Petersburg, IL, USA
Weather Forecast for next 15 Days for Lake 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 Lake 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 December 2025 Wednesday | Sunny |
-0.5 ° C (31.1°F) |
6.2 ° C (43.2°F) |
2.5 ° C (36.5°F) |
% 87 | 0% | 0.4 | Sunrise:07:16 AM Sunset: 04:36 PM |
Moonrise:05:19 AM Moonset: 02:33 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Overcast |
-0.3 ° C (31.5°F) |
6.2 ° C (43.2°F) |
3.5 ° C (38.2°F) |
% 98 | 0% | 0.1 | Sunrise:07:16 AM Sunset: 04:36 PM |
Moonrise:06:20 AM Moonset: 03:13 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Partly Cloudy |
-7.6 ° C (18.3°F) |
1.6 ° C (34.9°F) |
-3.1 ° C (26.5°F) |
% 75 | 0% | 0.3 | Sunrise:07:17 AM Sunset: 04:36 PM |
Moonrise:07:18 AM Moonset: 04:01 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-0.8 ° C (30.6°F) |
7.9 ° C (46.3°F) |
2.9 ° C (37.3°F) |
% 65 | 0% | 0.3 | Sunrise:07:18 AM Sunset: 04:37 PM |
Moonrise:08:09 AM Moonset: 04:57 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Sunny |
-2.5 ° C (27.4°F) |
1.1 ° C (34°F) |
-0.8 ° C (30.6°F) |
% 64 | 0% | 0 | Sunrise:07:18 AM Sunset: 04:37 PM |
Moonrise:08:54 AM Moonset: 05:58 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Partly Cloudy |
-2.4 ° C (27.6°F) |
3.9 ° C (39.1°F) |
0.4 ° C (32.8°F) |
% 49 | 0% | 2 | Sunrise:07:19 AM Sunset: 04:38 PM |
Moonrise:09:31 AM Moonset: 07:04 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Cloudy |
3.3 ° C (37.9°F) |
14.6 ° C (58.2°F) |
9.2 ° C (48.6°F) |
% 83 | 0% | 2 | Sunrise:07:19 AM Sunset: 04:38 PM |
Moonrise:10:02 AM Moonset: 08:10 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Overcast |
12.9 ° C (55.3°F) |
17.8 ° C (64.1°F) |
15.1 ° C (59.2°F) |
% 92 | 0% | 4 | Sunrise:07:19 AM Sunset: 04:39 PM |
Moonrise:10:28 AM Moonset: 09:16 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Partly Cloudy |
7.5 ° C (45.5°F) |
15.8 ° C (60.5°F) |
13.8 ° C (56.8°F) |
% 76 | 0% | 4 | Sunrise:07:20 AM Sunset: 04:40 PM |
Moonrise:10:52 AM Moonset: 10:22 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Partly Cloudy |
4.3 ° C (39.8°F) |
8 ° C (46.4°F) |
5.6 ° C (42.1°F) |
% 56 | 0% | 3 | Sunrise:07:20 AM Sunset: 04:40 PM |
Moonrise:11:15 AM Moonset: 11:30 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Patchy rain nearby |
1.7 ° C (35.1°F) |
2.3 ° C (36.2°F) |
2.6 ° C (36.7°F) |
% 80 | 80% | 1 | Sunrise:07:20 AM Sunset: 04:41 PM |
Moonrise:11:37 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Overcast |
0.9 ° C (33.6°F) |
6.5 ° C (43.6°F) |
3.5 ° C (38.4°F) |
% 77 | 0% | 1 | Sunrise:07:21 AM Sunset: 04:42 PM |
Moonrise:12:01 PM Moonset: 12:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
3.8 ° C (38.8°F) |
6.5 ° C (43.7°F) |
5 ° C (41°F) |
% 94 | 82% | 2 | Sunrise:07:21 AM Sunset: 04:43 PM |
Moonrise:12:29 PM Moonset: 01:52 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Partly Cloudy |
2.9 ° C (37.2°F) |
7.3 ° C (45.1°F) |
5.2 ° C (41.3°F) |
% 88 | 0% | 3 | Sunrise:07:21 AM Sunset: 04:43 PM |
Moonrise:01:03 PM Moonset: 03:09 AM Moon Phase ( Waxing Gibbous ) |
|
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