Weather forecast for tomorrow
Saint Peters, MO

Weather forecast for tomorrow

Friday, Jun 20.

Mostly Sunny
5:36 am

8:32 pm
CDT
Mostly Sunny
91°F / 75°F
  • Wind: 12mph S
  • Humidity: 59%
  • Precip. probability: 5%
  • Precipitation: 0"
  • UV index: 9
On Friday, in Saint Peters, a pleasant, mostly sunny outlook is in place.
Temperatures are expected to range from a maximum of a humid 91.4°F to a minimum of a warm 75.2°F.
The maximum heat index, which adjusts the air temperature based on humidity, is assessed at a steamy 102.2°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The day’s maximum of 91.4°F shows a shift toward July's pattern over June's.
Sunrise will be at 5:36 am and sunset at 8:32 pm; tomorrow's daylight will last for 14h and 56min.

Frequently asked questions

What is the weather forecast for Saint Peters for tomorrow?
Tomorrow, dry and sunny weather is expected throughout the day.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature in Saint Peters will be 91.4°F, while the minimum temperature will be 75.2°F. The maximum heat index, which combines air temperature and relative humidity, is computed to be 102.2°F.
The highest temperature will be relatively higher than the average maximum of 84°F in June. The lowest temperature will be notably higher than the average low of 66°F.
When is the sunrise / sunset tomorrow?
On Friday, in Saint Peters, sunrise will be at 5:36 am and sunset at 8:32 pm (CDT).
How many hours of daylight will Saint Peters have tomorrow?
Tomorrow, the daylight will last for 14h and 56min.

Hourly weather forecast

12 am
  • 72°F
  • Feels like:
    72°F
Clear
Clear
  • Wind: 2mph SSW
  • Pressure: 29.97"Hg
  • Humidity: 84%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 68°F
  • Feels like:
    68°F
Clear
Clear
  • Wind: 3mph SSW
  • Pressure: 29.97"Hg
  • Humidity: 89%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 66°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph S
  • Pressure: 29.97"Hg
  • Humidity: 91%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
Sunrise: 5:36 am
6 am
  • 66°F
  • Feels like:
    68°F
Mostly Sunny
Mostly Sunny
  • Wind: 4mph S
  • Pressure: 29.97"Hg
  • Humidity: 89%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
8 am
  • 73°F
  • Feels like:
    73°F
Mostly Sunny
Mostly Sunny
  • Wind: 6mph S
  • Pressure: 29.97"Hg
  • Humidity: 75%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 81°F
  • Feels like:
    84°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph S
  • Pressure: 29.97"Hg
  • Humidity: 61%
  • Precip. probability: 1%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 86°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SSW
  • Pressure: 29.94"Hg
  • Humidity: 54%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 90°F
  • Feels like:
    95°F
Mostly Sunny
Mostly Sunny
  • Wind: 9mph S
  • Pressure: 29.91"Hg
  • Humidity: 52%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 91°F
  • Feels like:
    99°F
Sunny
Sunny
  • Wind: 11mph SSW
  • Pressure: 29.85"Hg
  • Humidity: 51%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 90°F
  • Feels like:
    99°F
Sunny
Sunny
  • Wind: 12mph S
  • Pressure: 29.85"Hg
  • Humidity: 53%
  • Precip. probability: 0%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 86°F
  • Feels like:
    93°F
Sunny
Sunny
  • Wind: 10mph S
  • Pressure: 29.85"Hg
  • Humidity: 63%
  • Precip. probability: 2%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:32 pm
10 pm
  • 82°F
  • Feels like:
    88°F
Clear
Clear
  • Wind: 9mph S
  • Pressure: 29.85"Hg
  • Humidity: 73%
  • Precip. probability: 4%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Friday, primarily bright and occasionally gloomy weather is predicted.
The temperature will be between the lowest temperature of 66.2°F and the highest temperature of 91.4°F. The feels-like temperature will be between a minimum of 68°F and a maximum of 98.6°F. The hottest part of the day will be from 3 pm to 5 pm.
The forecasted high is more in line with July's typical maximum of 87.1°F than the usual for June. The expected low will be also more in line with what’s common in July than the current June average of 66°F.
Updated: Jun 20, 2025 @ 00:14:38 UTC
Published by: Weather U.S. | About Us
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