Weather forecast for tomorrowSaint Peters, MO
Weather forecast for tomorrow
Monday Oct 19, 2026
- 72°F
- 43°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSSE 157°
- Humidity: 54%
- UV index: 5
- Sunrise: 7:16 am CDT
- Sunset: 6:18 pm CDT
- details ▼
On Monday, in Saint Peters, sunny intervals will be long-lasting, with few disruptions.
The day will see a remarkable high of a delightful 71.6°F, sharply contrasting with a low of a chilly 42.8°F.
The daily maximum temperature is predicted to be slightly warmer than October's climate average of 66°F.
Sunrise will be at 7:16 am and sunset at 6:18 pm; tomorrow's daylight will last for 11h and 2min.
The day will see a remarkable high of a delightful 71.6°F, sharply contrasting with a low of a chilly 42.8°F.
The daily maximum temperature is predicted to be slightly warmer than October's climate average of 66°F.
Sunrise will be at 7:16 am and sunset at 6:18 pm; tomorrow's daylight will last for 11h and 2min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 70°C.
Coldest hour: 6 am 39°C.
Coldest hour: 6 am 39°C.
Chance of precipitation
Highest chance: 6 am 7%.
Hourly weather forecast
- 12 am
- 46°F
- Feels like:46°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 2mphS 171°
- Humidity: 87%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 1mphSSE 166°
- Humidity: 94%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 41°F
- Feels like:41°F
Clear
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 1mphSSW 196°
- Humidity: 100%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 1mphSSE 168°
- Humidity: 100%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:16 am
- 8 am
- 43°F
- Feels like:43°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 1mphSSE 157°
- Humidity: 95%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 54°F
- Feels like:54°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 157°
- Humidity: 63%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphS 175°
- Humidity: 41%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 70°F
- Feels like:70°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSSE 153°
- Humidity: 35%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 70°F
- Feels like:70°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 152°
- Humidity: 34%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphESE 106°
- Humidity: 46%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:18 pm
- 8 pm
- 57°F
- Feels like:57°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphE 95°
- Humidity: 65%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:52°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphE 80°
- Humidity: 76%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, primarily dry and sunny and occasionally gloomy weather is forecasted.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The highest temperature will be slightly warmer than October's average maximum of 66°F. The expected low will be more comparable to what’s common in November than the current October average of 48.4°F.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The highest temperature will be slightly warmer than October's average maximum of 66°F. The expected low will be more comparable to what’s common in November than the current October average of 48.4°F.
Updated: Oct 18, 2026 @ 10:56:38 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, in Saint Peters, expect brilliant sunshine under mostly clear skies.
Tomorrow, the highest temperature will be 71.6°F, while the lowest temperature will be 42.8°F.
The maximum temperature will be relatively higher than the average highest temperature of 66°F in October. The lowest temperature will be also relatively lower than the average low of 48.4°F.
The maximum temperature will be relatively higher than the average highest temperature of 66°F in October. The lowest temperature will be also relatively lower than the average low of 48.4°F.
On Monday, in Saint Peters, sunrise will be at 7:16 am and sunset at 6:18 pm (CDT).
In Saint Peters, the length of the day tomorrow will be 11h and 2min.
