Weather forecast for 10 days
Old Saint Louis, IN

Weather forecast for the weekend

Saturday, Jun 21.

Mostly Sunny
6:15 am

9:14 pm
EDT
Mostly Sunny
91°F / 73°F
  • Wind: 11mph SSW
  • Humidity: 67%
  • Precip. probability: 7%
  • Precipitation: 0"
  • UV index: 9
On Saturday, June 21, sunshine will dominate, with only occasional cloud cover.
Rain is not forecasted. Temperature is expected to swing from a high of a hot 91.4°F to a low of a temperate 73.4°F.
On Saturday, the temperature will resemble July's climate with a high near 83.3°F.
Sunrise will be at 6:15 am and sunset at 9:14 pm; the daylight will last for 14h and 59min.

Sunday, Jun 22.

Sunny
6:15 am

9:15 pm
EDT
Sunny
93°F / 75°F
  • Wind: 9mph SSW
  • Humidity: 68%
  • Precip. probability: 9%
  • Precipitation: 0"
  • UV index: 9
On Sunday, June 22, sunny skies are in store, with excellent visibility.
Rain is not anticipated. Temperatures will oscillate between a hot 93.2°F at their highest and a temperate 75.2°F at their lowest.
On Sunday, temperatures will feel hotter as the forecast mirrors July's average high rather than June's.
Sunrise will be at 6:15 am and sunset at 9:15 pm; the daylight will last for 14h and 59min.

Frequently asked questions

What is the weather forecast for Old Saint Louis for Saturday?
On Saturday, in Old Saint Louis, predominantly sunny weather will make for pleasant outdoor conditions.
Will it rain on Saturday?
No, it will not rain on Saturday.
What will be the maximum temperature on Saturday?
On Saturday, the maximum temperature will be 91.4°F, while the minimum temperature will be 73.4°F.
What is the weather forecast for Old Saint Louis for Sunday?
On Sunday, in Old Saint Louis, conditions will remain bright with clear skies.
Will it rain on Sunday?
No, it will not rain on Sunday in Old Saint Louis.
What will be the highest temperature on Sunday in Old Saint Louis?
On Sunday, the maximum temperature will be 93.2°F, while the minimum temperature will be 75.2°F.
What is the weather forecast for Old Saint Louis for the next ten days?
In Old Saint Louis, weather will be unstable, and a combination of sun-filled, cloudy, turbulent and showery weather is anticipated for the next ten days.
Will it rain in the next ten days?
Rain is predicted for Wednesday, Thursday and next Thursday in Old Saint Louis. Wednesday, with elevated precipitation of 0.83", will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 82.4°F and 93.2°F, while the minimum temperature will range between 64.4°F and 75.2°F.
Combining with the humidity, the maximum feel-like temperature will vary between 87.8°F and 114.8°F.
What will be the hottest and the coldest days?
The hottest days will be Sunday through next Tuesday, with a maximum of 93.2°F. The coldest day will be Thursday, with a maximum of 82.4°F.

Long-term weather forecast

TueJun 17.
  • min.
  • 72°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SSW
  • Humidity: 93%
  • UV index: 0
  • Precip. probability: 17%
  • Precipitation: 0"
  • 6:14 am 9:13 pm EDT
WedJun 18.
  • 86°F
  • 68°F
PM Thunderstorms / Wind
PM Thunderstorms / Wind
  • Wind: 24mph SSW
  • Humidity: 80%
  • UV index: 8
  • Precip. probability: 81%
  • Precipitation: 0.83"
  • 6:14 am 9:14 pm EDT
ThuJun 19.
  • 82°F
  • 64°F
AM Showers
AM Showers
  • Wind: 10mph WNW
  • Humidity: 74%
  • UV index: 8
  • Precip. probability: 43%
  • Precipitation: 0.16"
  • 6:14 am 9:14 pm EDT
FriJun 20.
  • 88°F
  • 70°F
Mostly Sunny
Mostly Sunny
  • Wind: 8mph SSW
  • Humidity: 65%
  • UV index: 9
  • Precip. probability: 9%
  • Precipitation: 0"
  • 6:15 am 9:14 pm EDT
SatJun 21.
  • 91°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 11mph SSW
  • Humidity: 67%
  • UV index: 9
  • Precip. probability: 7%
  • Precipitation: 0"
  • 6:15 am 9:14 pm EDT
SunJun 22.
  • 93°F
  • 75°F
Sunny
Sunny
  • Wind: 9mph SSW
  • Humidity: 68%
  • UV index: 9
  • Precip. probability: 9%
  • Precipitation: 0"
  • 6:15 am 9:15 pm EDT
MonJun 23.
  • 93°F
  • 75°F
Sunny
Sunny
  • Wind: 7mph SSW
  • Humidity: 67%
  • UV index: 9
  • Precip. probability: 11%
  • Precipitation: 0"
  • 6:15 am 9:15 pm EDT
TueJun 24.
  • 93°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 5mph SSW
  • Humidity: 66%
  • UV index: 9
  • Precip. probability: 18%
  • Precipitation: 0"
  • 6:16 am 9:15 pm EDT
WedJun 25.
  • 90°F
  • 73°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSW
  • Humidity: 70%
  • UV index: 9
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:16 am 9:15 pm EDT
ThuJun 26.
  • 88°F
  • 72°F
PM Thunderstorms
PM Thunderstorms
  • Wind: 8mph SSW
  • Humidity: 72%
  • UV index: 9
  • Precip. probability: 43%
  • Precipitation: 0.12"
  • 6:16 am 9:15 pm EDT
An unsettled pattern is expected over the next ten days, and a mix of sunny, dull, unstable and wet weather is forecasted.
Rain is predicted for Wednesday, Thursday and next Thursday.
In the coming days, the highest temperature will range between 82.4°F and 93.2°F, while the forecast minimum temperature falls between 64.4°F and 75.2°F.
The hottest days will be Sunday through next Tuesday, with a maximum of 93.2°F; with the highest temperature of 82.4°F, Thursday will be the coldest day.
Including the humidity's impact, the maximum feel-like temperature may increase significantly and range between a tropical 87.8°F and a life-threatening 114.8°F.
Updated: Jun 18, 2025 @ 02:14:54 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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