Weather forecast for tomorrow
Friday, Jun 20.
5:49 am
9:20 pm
CDT
9:20 pm
CDT
Sunny
102°F / 77°F
- Wind: 19mph SSE
- Humidity: 51%
- Precip. probability: 3%
- Precipitation: 0"
- UV index: 8
Tomorrow, sunshine is expected with little to no cloud cover.
Temperatures are anticipated to range from a maximum of a steamy 102.2°F to a minimum of a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is estimated at a searing 125.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Conditions will lean hotter, as the high of 102.2°F is more representative of July's climate.
Sunrise will be at 5:49 am and sunset at 9:20 pm; tomorrow's daylight will last for 15h and 31min.
Temperatures are anticipated to range from a maximum of a steamy 102.2°F to a minimum of a warm 77°F.
The maximum heat index, which integrates air moisture with ambient temperature, is estimated at a searing 125.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Conditions will lean hotter, as the high of 102.2°F is more representative of July's climate.
Sunrise will be at 5:49 am and sunset at 9:20 pm; tomorrow's daylight will last for 15h and 31min.
Frequently asked questions
What is the weather forecast for Mount Vernon for tomorrow?
On Friday, in Mount Vernon, conditions will remain bright with clear skies.
What will be the maximum temperature tomorrow?
Tomorrow, the maximum temperature in Mount Vernon, South Dakota, will be 102.2°F, while the minimum temperature will be 77°F. The maximum heat index, which factors the actual air temperature with the relative humidity, is estimated at 125.6°F.
The highest temperature will be uncommonly higher than the average maximum of 79°F in June. The lowest temperature will be also notably higher than the average low of 60.3°F.
The highest temperature will be uncommonly higher than the average maximum of 79°F in June. The lowest temperature will be also notably higher than the average low of 60.3°F.
When is the sunrise / sunset tomorrow?
On Friday, in Mount Vernon, sunrise will be at 5:49 am and sunset at 9:20 pm (CDT).
How long will the day be tomorrow?
In Mount Vernon, South Dakota, the length of the day tomorrow will be 15h and 31min.
Hourly weather forecast
12 am
- 77°F
- Feels like:
79°F
Clear
- Wind: 14mph S
- Pressure: 29.59"Hg
- Humidity: 62%
- Precip. probability: 1%
- Precipitation: 0"
- Visibility: 10mi
2 am
- 75°F
- Feels like:
75°F
Clear
- Wind: 11mph S
- Pressure: 29.59"Hg
- Humidity: 65%
- Precip. probability: 2%
- Precipitation: 0"
- Visibility: 10mi
4 am
- 73°F
- Feels like:
73°F
Clear
- Wind: 9mph S
- Pressure: 29.56"Hg
- Humidity: 69%
- Precip. probability: 3%
- Precipitation: 0"
- Visibility: 10mi
Sunrise: 5:49 am
6 am
- 70°F
- Feels like:
72°F
Partly Cloudy
- Wind: 7mph S
- Pressure: 29.56"Hg
- Humidity: 76%
- Precip. probability: 4%
- Precipitation: 0"
- Visibility: 10mi
8 am
- 75°F
- Feels like:
75°F
Mostly Sunny
- Wind: 8mph SSE
- Pressure: 29.53"Hg
- Humidity: 73%
- Precip. probability: 2%
- Precipitation: 0"
- Visibility: 10mi
10 am
- 82°F
- Feels like:
86°F
Sunny
- Wind: 11mph SSE
- Pressure: 29.5"Hg
- Humidity: 58%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
12 pm
- 88°F
- Feels like:
93°F
Sunny
- Wind: 15mph SSE
- Pressure: 29.44"Hg
- Humidity: 50%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
2 pm
- 93°F
- Feels like:
100°F
Sunny
- Wind: 18mph SSE
- Pressure: 29.38"Hg
- Humidity: 44%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
4 pm
- 99°F
- Feels like:
104°F
Sunny
- Wind: 19mph S
- Pressure: 29.32"Hg
- Humidity: 37%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
6 pm
- 100°F
- Feels like:
106°F
Sunny
- Wind: 19mph S
- Pressure: 29.26"Hg
- Humidity: 33%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
8 pm
- 97°F
- Feels like:
102°F
Sunny
- Wind: 14mph S
- Pressure: 29.23"Hg
- Humidity: 35%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
Sunset: 9:20 pm
10 pm
- 88°F
- Feels like:
91°F
Clear
- Wind: 14mph S
- Pressure: 29.26"Hg
- Humidity: 43%
- Precip. probability: 0%
- Precipitation: 0"
- Visibility: 10mi
Tomorrow, on Friday, primarily mostly clear and occasionally cloud-filled weather is predicted.
The temperature will vary between a minimum of 69.8°F and a maximum of 100.4°F. The hottest part of the day will be at 5 pm and 6 pm.
The temperature will be more comparable to what’s typical for July than the usual maximum in June. Forecast models suggest a low also more consistent with July's typical minimum of 64.6°F than June's usual 60.3°F.
The temperature will vary between a minimum of 69.8°F and a maximum of 100.4°F. The hottest part of the day will be at 5 pm and 6 pm.
The temperature will be more comparable to what’s typical for July than the usual maximum in June. Forecast models suggest a low also more consistent with July's typical minimum of 64.6°F than June's usual 60.3°F.
Updated: Jun 19, 2025 @ 17:01:49 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