St. Peter Weather Forecast 15 Days, Weather in St. Peter Today
Current weather conditions and 15 day weather forecast for St. Peter, 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 St. Peter
| 05 February 2026 Thursday -0.8 ° C / 30.6°F  Overcast |
Feels Like : -5.6 ° C / 22°F Humidity : % 62 Pressure : 1016 mb Wind Speed : 15.8 kmph / 9.8 miles from SSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for St. Peter, IL, USA
Weather Forecast for next 15 Days for St. Peter 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 St. Peter, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 05 February 2026 Thursday |  Sunny |
-9.5 ° C (14.9°F) |
1.1 ° C (34°F) |
-4.5 ° C (23.9°F) |
% 79 | 0% | 0.4 | Sunrise:06:57 AM Sunset: 05:22 PM |
Moonrise:09:42 PM Moonset: 08:48 AM Moon Phase ( Waning Gibbous ) |
|
| 06 February 2026 Friday | Overcast |
-1.8 ° C (28.8°F) |
1.2 ° C (34.2°F) |
-0.2 ° C (31.7°F) |
% 93 | 0% | 0.6 | Sunrise:06:56 AM Sunset: 05:23 PM |
Moonrise:10:44 PM Moonset: 09:11 AM Moon Phase ( Waning Gibbous ) |
|
| 07 February 2026 Saturday | Sunny |
-7.5 ° C (18.5°F) |
-2.8 ° C (27°F) |
-4.3 ° C (24.3°F) |
% 78 | 0% | 0.6 | Sunrise:06:55 AM Sunset: 05:24 PM |
Moonrise:11:47 PM Moonset: 09:34 AM Moon Phase ( Waning Gibbous ) |
|
| 08 February 2026 Sunday |  Partly Cloudy |
-5.9 ° C (21.4°F) |
8.9 ° C (48°F) |
-0.7 ° C (30.7°F) |
% 83 | 0% | 0.6 | Sunrise:06:54 AM Sunset: 05:25 PM |
Moonrise:No moonrise Moonset: 10:00 AM Moon Phase ( Waning Gibbous ) |
|
| 09 February 2026 Monday | Sunny |
0.9 ° C (33.7°F) |
12.4 ° C (54.4°F) |
6.1 ° C (43.1°F) |
% 78 | 0% | 0 | Sunrise:06:53 AM Sunset: 05:26 PM |
Moonrise:12:49 AM Moonset: 10:29 AM Moon Phase ( Last Quarter ) |
|
| 10 February 2026 Tuesday |  Patchy rain nearby |
4.5 ° C (40.1°F) |
16.3 ° C (61.3°F) |
10 ° C (50°F) |
% 84 | 52% | 2 | Sunrise:06:52 AM Sunset: 05:27 PM |
Moonrise:01:51 AM Moonset: 11:05 AM Moon Phase ( Waning Crescent ) |
|
| 11 February 2026 Wednesday | Patchy rain nearby |
6.4 ° C (43.5°F) |
12.3 ° C (54.2°F) |
10 ° C (50°F) |
% 94 | 79% | 3 | Sunrise:06:51 AM Sunset: 05:29 PM |
Moonrise:02:51 AM Moonset: 11:47 AM Moon Phase ( Waning Crescent ) |
|
| 12 February 2026 Thursday | Overcast |
3.5 ° C (38.2°F) |
9.2 ° C (48.6°F) |
5.5 ° C (41.9°F) |
% 76 | 0% | 2 | Sunrise:06:50 AM Sunset: 05:30 PM |
Moonrise:03:47 AM Moonset: 12:37 PM Moon Phase ( Waning Crescent ) |
|
| 13 February 2026 Friday |  Moderate rain |
0.3 ° C (32.5°F) |
3.4 ° C (38.1°F) |
2.6 ° C (36.7°F) |
% 91 | 89% | 1 | Sunrise:06:48 AM Sunset: 05:31 PM |
Moonrise:04:36 AM Moonset: 01:35 PM Moon Phase ( Waning Crescent ) |
|
| 14 February 2026 Saturday |  Moderate or heavy snow showers |
-4.1 ° C (24.6°F) |
1.4 ° C (34.5°F) |
-0.5 ° C (31°F) |
% 95 | 60% | 1 | Sunrise:06:47 AM Sunset: 05:32 PM |
Moonrise:05:20 AM Moonset: 02:38 PM Moon Phase ( Waning Crescent ) |
|
| 15 February 2026 Sunday |  Mist |
-8.5 ° C (16.7°F) |
1.3 ° C (34.4°F) |
-2.8 ° C (27°F) |
% 94 | 0% | 1 | Sunrise:06:46 AM Sunset: 05:33 PM |
Moonrise:05:56 AM Moonset: 03:45 PM Moon Phase ( Waning Crescent ) |
|
| 16 February 2026 Monday | Mist |
0.1 ° C (32.2°F) |
4.9 ° C (40.8°F) |
2 ° C (35.6°F) |
% 93 | 0% | 1 | Sunrise:06:45 AM Sunset: 05:34 PM |
Moonrise:06:27 AM Moonset: 04:52 PM Moon Phase ( Waning Crescent ) |
|
| 17 February 2026 Tuesday | Patchy rain nearby |
1.1 ° C (33.9°F) |
14.1 ° C (57.3°F) |
8.3 ° C (47°F) |
% 92 | 85% | 2 | Sunrise:06:43 AM Sunset: 05:35 PM |
Moonrise:06:54 AM Moonset: 06:00 PM Moon Phase ( New Moon ) |
|
| 18 February 2026 Wednesday | Moderate rain |
11.6 ° C (52.9°F) |
17 ° C (62.6°F) |
13.5 ° C (56.2°F) |
% 90 | 83% | 3 | Sunrise:06:42 AM Sunset: 05:36 PM |
Moonrise:07:19 AM Moonset: 07:08 PM Moon Phase ( Waxing Crescent ) |
|
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