Weather forecast for tomorrowSaint Clair, PA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 2mphN 352°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:19 am EDT
- Sunset: 6:20 pm EDT
- details ▼
Tomorrow, on Sunday, expect sunny weather with a crisp, clear sky.
The predicted temperature range extends from a high of a comfortable 60.8°F to a low of a wintry 35.6°F.
The maximum temperature for tomorrow is forecasted to match the regular October high 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 predicted temperature range extends from a high of a comfortable 60.8°F to a low of a wintry 35.6°F.
The maximum temperature for tomorrow is forecasted to match the regular October high 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 32°C.
Coldest hour: 6 am 32°C.
Chance of precipitation
Highest chance: 6 am 3%.
Hourly weather forecast
- 12 am
- 37°F
- Feels like:36°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphNNW 343°
- Humidity: 65%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 36°F
- Feels like:34°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphNNW 345°
- Humidity: 67%
- 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 344°
- Humidity: 73%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 32°F
- Feels like:32°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 1mphNNW 347°
- Humidity: 75%
- 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: 73%
- Pressure: 30.56"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 45°F
- Feels like:45°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphN 9°
- Humidity: 51%
- 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 5°
- Humidity: 40%
- 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 354°
- 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 346°
- 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 337°
- Humidity: 50%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:20 pm
- 8 pm
- 46°F
- Feels like:46°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 0mphN 351°
- Humidity: 63%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 0mphN 7°
- Humidity: 73%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, primarily sunny and occasionally cloud-filled weather is forecasted.
The temperature will be between a minimum of 32°F and a maximum of 59°F. The warmest part of the day will be at 3 pm and 4 pm.
The highest temperature tomorrow will be consistent with October's typical maximum. The minimum temperature tomorrow will be more comparable to November's average low of 33.8°F than October's average of 44.6°F.
The temperature will be between a minimum of 32°F and a maximum of 59°F. The warmest part of the day will be at 3 pm and 4 pm.
The highest temperature tomorrow will be consistent with October's typical maximum. The minimum temperature tomorrow will be more comparable to November's average low of 33.8°F than October's average of 44.6°F.
Updated: Oct 17, 2026 @ 16:00:17 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
On Sunday, sunny conditions are expected to continue.
Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 35.6°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be moderately lower than the average low temperature.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be moderately lower than the average low temperature.
On Sunday, in Saint Clair, sunrise will be at 7:19 am and sunset at 6:20 pm (EDT).
In Saint Clair, the length of the day tomorrow will be 11h and 1min.
