St. Clair Weather Forecast 15 Days, Weather in St. Clair Today
Current weather conditions and 15 day weather forecast for St. Clair, Pennsylvania, 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. Clair
| 09 February 2026 Monday -17.8 ° C / -0°F  Clear |
Feels Like : -20.6 ° C / -5°F Humidity : % 79 Pressure : 1023 mb Wind Speed : 3.6 kmph / 2.2 miles from SSE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for St. Clair, PA, USA
Weather Forecast for next 15 Days for St. Clair 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. Clair, Pennsylvania 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 09 February 2026 Monday | Sunny |
-18.2 ° C (-0.8°F) |
-1.1 ° C (30°F) |
-9.9 ° C (14.1°F) |
% 63 | 0% | 0.6 | Sunrise:07:17 AM Sunset: 05:44 PM |
Moonrise:01:13 AM Moonset: 10:44 AM Moon Phase ( Last Quarter ) |
|
| 10 February 2026 Tuesday |  Overcast |
-3.2 ° C (26.2°F) |
4.3 ° C (39.7°F) |
0.8 ° C (33.4°F) |
% 85 | 0% | 0.4 | Sunrise:07:15 AM Sunset: 05:46 PM |
Moonrise:02:15 AM Moonset: 11:19 AM Moon Phase ( Waning Crescent ) |
|
| 11 February 2026 Wednesday | Overcast |
-6.1 ° C (21°F) |
-3.3 ° C (26.1°F) |
-3.6 ° C (25.6°F) |
% 92 | 0% | 0.6 | Sunrise:07:14 AM Sunset: 05:47 PM |
Moonrise:03:16 AM Moonset: 12:00 PM Moon Phase ( Waning Crescent ) |
|
| 12 February 2026 Thursday |  Moderate snow |
-11.3 ° C (11.7°F) |
-5.8 ° C (21.5°F) |
-7.5 ° C (18.5°F) |
% 92 | 85% | 0.5 | Sunrise:07:13 AM Sunset: 05:48 PM |
Moonrise:04:12 AM Moonset: 12:50 PM Moon Phase ( Waning Crescent ) |
|
| 13 February 2026 Friday |  Light snow |
-16.6 ° C (2.1°F) |
-2.5 ° C (27.5°F) |
-10 ° C (14°F) |
% 94 | 82% | 0 | Sunrise:07:12 AM Sunset: 05:49 PM |
Moonrise:05:02 AM Moonset: 01:48 PM Moon Phase ( Waning Crescent ) |
|
| 14 February 2026 Saturday |  Moderate or heavy snow showers |
-12.4 ° C (9.7°F) |
-0.9 ° C (30.3°F) |
-5.8 ° C (21.6°F) |
% 91 | 77% | 1 | Sunrise:07:10 AM Sunset: 05:50 PM |
Moonrise:05:45 AM Moonset: 02:52 PM Moon Phase ( Waning Crescent ) |
|
| 15 February 2026 Sunday | Moderate snow |
-2.1 ° C (28.2°F) |
0.5 ° C (32.9°F) |
-0.9 ° C (30.4°F) |
% 96 | 74% | 1 | Sunrise:07:09 AM Sunset: 05:52 PM |
Moonrise:06:20 AM Moonset: 03:59 PM Moon Phase ( Waning Crescent ) |
|
| 16 February 2026 Monday | Moderate snow |
-3.6 ° C (25.6°F) |
0 ° C (32.1°F) |
-1.6 ° C (29.1°F) |
% 96 | 87% | 1 | Sunrise:07:08 AM Sunset: 05:53 PM |
Moonrise:06:50 AM Moonset: 05:08 PM Moon Phase ( Waning Crescent ) |
|
| 17 February 2026 Tuesday |  Fog |
-13.8 ° C (7.2°F) |
1.1 ° C (33.9°F) |
-2.7 ° C (27.1°F) |
% 97 | 83% | 1 | Sunrise:07:06 AM Sunset: 05:54 PM |
Moonrise:07:17 AM Moonset: 06:17 PM Moon Phase ( New Moon ) |
|
| 18 February 2026 Wednesday |  Patchy rain nearby |
4.1 ° C (39.4°F) |
10.2 ° C (50.4°F) |
7.5 ° C (45.6°F) |
% 98 | 84% | 2 | Sunrise:07:05 AM Sunset: 05:55 PM |
Moonrise:07:40 AM Moonset: 07:26 PM Moon Phase ( Waxing Crescent ) |
|
| 19 February 2026 Thursday | Patchy rain nearby |
-0.3 ° C (31.5°F) |
9.7 ° C (49.4°F) |
4.7 ° C (40.5°F) |
% 94 | 70% | 1 | Sunrise:07:04 AM Sunset: 05:56 PM |
Moonrise:08:02 AM Moonset: 08:35 PM Moon Phase ( Waxing Crescent ) |
|
| 20 February 2026 Friday |  Partly Cloudy |
-2.4 ° C (27.7°F) |
7.2 ° C (44.9°F) |
2.2 ° C (36°F) |
% 85 | 0% | 2 | Sunrise:07:02 AM Sunset: 05:57 PM |
Moonrise:08:25 AM Moonset: 09:47 PM Moon Phase ( Waxing Crescent ) |
|
| 21 February 2026 Saturday |  Moderate rain |
-0.4 ° C (31.2°F) |
3.6 ° C (38.5°F) |
1.8 ° C (35.2°F) |
% 96 | 71% | 1 | Sunrise:07:01 AM Sunset: 05:58 PM |
Moonrise:08:50 AM Moonset: 11:00 PM Moon Phase ( Waxing Crescent ) |
|
| 22 February 2026 Sunday | Patchy rain nearby |
1.1 ° C (34°F) |
8.6 ° C (47.4°F) |
6.1 ° C (43°F) |
% 97 | 85% | 2 | Sunrise:07:00 AM Sunset: 06:00 PM |
Moonrise:09:19 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
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