Weather forecast for todaySaint Clair, PA

Weather forecast for today

Current condition 8:22 pm EDT

• 45°F
• Feels like:
  45°F

Clear

• Precipitation: 0"
• Wind: 1mphW 270°
• Humidity: 72%
• Dewpoint: 36°F
• Pressure: 30.52"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

In Saint Clair, currently, the conditions remain clear, with no sign of cloud cover.
The temperature is a chilly 44.6°F. The current temperature is a few degrees off the lowest anticipated temperature.

Sunday Oct 18, 2026

• min.
• 36°F

Clear

• Precip. probability: 3%
• Precipitation: 0"
• Wind: 1mphN 352°
• Humidity: 80%
• UV index: 0
• Sunrise: 7:19 am EDT
• Sunset: 6:20 pm EDT
• details ▼

For the rest of Sunday, the atmosphere will remain completely clear and bright.
The lowest temperature will be a cold 35.6°F.
Sunrise was at 7:19 am and sunset at 6:20 pm; the daylight lasted for 11h and 1min.

Hourly overview

Hourly weather forecast

• 9 pm

• 43°F
• Feels like:
  43°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 1mphNNW 326°
• Humidity: 74%
• Pressure: 30.5"Hg
• Visibility: 10mi
• UV index: 0
• details ▼

• 10 pm

• 43°F
• Feels like:
  43°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 1mphNNW 328°
• Humidity: 77%
• Pressure: 30.5"Hg
• Visibility: 10mi
• UV index: 0
• details ▼

• 11 pm

• 41°F
• Feels like:
  41°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 1mphNNW 345°
• Humidity: 81%
• Pressure: 30.5"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

• 12 am

• 41°F
• Feels like:
  41°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 0mphN 0°
• Humidity: 82%
• Pressure: 30.5"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

• 1 am

• 41°F
• Feels like:
  41°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 0mphN 0°
• Humidity: 81%
• Pressure: 30.5"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

• 2 am

• 39°F
• Feels like:
  39°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 0mphN 0°
• Humidity: 81%
• Pressure: 30.5"Hg
• Visibility: 10mi
• UV index: 0
• details ▼

• 3 am

• 39°F
• Feels like:
  39°F

Clear

• Precip. probability: 1%
• Precipitation: 0"
• Wind: 0mphN 0°
• Humidity: 81%
• Pressure: 30.5"Hg
• Visibility: 10mi
• UV index: 0
• details ▼

• 4 am

• 37°F
• Feels like:
  37°F

Clear

• Precip. probability: 3%
• Precipitation: 0"
• Wind: 0mphN 0°
• Humidity: 84%
• Pressure: 30.47"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

• 5 am

• 37°F
• Feels like:
  37°F

Clear

• Precip. probability: 3%
• Precipitation: 0"
• Wind: 0mphN 358°
• Humidity: 84%
• Pressure: 30.47"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

• 6 am

• 37°F
• Feels like:
  37°F

Clear

• Precip. probability: 3%
• Precipitation: 0"
• Wind: 0mphN 354°
• Humidity: 84%
• Pressure: 30.47"Hg
• Visibility: 9mi
• UV index: 0
• details ▼

For the rest of the night, the weather will be unstable. The temperature will be between the highest temperature of 42.8°F and the lowest temperature of 41°F.

Updated: Oct 19, 2026 @ 00:22:56 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

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