Weather forecast for tomorrowSaint Clair, PA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphN 352°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:19 am EDT
- Sunset: 6:20 pm EDT
- details ▼
Tomorrow, in Saint Clair, clear skies and sunshine are also anticipated.
The maximum temperature will be a breezy 60.8°F, while the minimum temperature will be a cold 35.6°F.
The temperature will be in line with October's average maximum of 60.8°F.
Sunrise will be at 7:19 am and sunset at 6:20 pm; tomorrow's daylight will last for 11h and 1min.
The maximum temperature will be a breezy 60.8°F, while the minimum temperature will be a cold 35.6°F.
The temperature will be in line with October's average maximum of 60.8°F.
Sunrise will be at 7:19 am and sunset at 6:20 pm; tomorrow's daylight will last for 11h and 1min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 59°C.
Coldest hour: 6 am 34°C.
Coldest hour: 6 am 34°C.
Chance of precipitation
Highest chance: 6 am 3%.
Hourly weather forecast
- 12 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphNNW 346°
- Humidity: 65%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 36°F
- Feels like:34°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphNNW 346°
- Humidity: 68%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 34°F
- Feels like:34°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphNNW 345°
- Humidity: 72%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 34°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 2mphNNW 348°
- Humidity: 74%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:19 am
- 8 am
- 34°F
- Feels like:34°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphNNW 345°
- Humidity: 72%
- Pressure: 30.56"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:46°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphN 9°
- Humidity: 50%
- Pressure: 30.59"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 54°F
- Feels like:54°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphN 2°
- Humidity: 39%
- Pressure: 30.56"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 57°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphN 351°
- Humidity: 33%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphNNW 347°
- Humidity: 34%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 54°F
- Feels like:54°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphNNW 338°
- Humidity: 48%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:20 pm
- 8 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 0mphN 351°
- Humidity: 63%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 0mphN 7°
- Humidity: 71%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a cloudless sky and mainly sunshiny weather are expected.
The temperature will vary between a minimum of 33.8°F and a maximum of 59°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature tomorrow will be close to the average high in October. The minimum temperature tomorrow will be more resembling November's average low of 33.8°F than October's average of 44.6°F.
The temperature will vary between a minimum of 33.8°F and a maximum of 59°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature tomorrow will be close to the average high in October. The minimum temperature tomorrow will be more resembling November's average low of 33.8°F than October's average of 44.6°F.
Updated: Oct 17, 2026 @ 17:12:03 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, sunshine is forecasted under mostly clear skies.
Tomorrow, the maximum temperature in Saint Clair will be 60.8°F, while the minimum temperature will be 35.6°F.
The highest temperature will be in line with the average maximum of 60.8°F in October. The lowest temperature will be slightly cooler than the average low of 44.6°F.
The highest temperature will be in line with the average maximum of 60.8°F in October. The lowest temperature will be slightly cooler than the average low of 44.6°F.
On Sunday, in Saint Clair, sunrise will be at 7:19 am and sunset at 6:20 pm (EDT).
In Saint Clair, tomorrow, there will be 11h and 1min of daylight.
