Weather forecast for 10 daysGrenville, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphNNW 341°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:50 am CDT
- Sunset: 6:39 pm CDT
- details ▼
On Sunday, in Grenville, sunshine will likely continue with scattered clouds at most.
A stark contrast will be observed between the day's peak temperature of a breezy 66.2°F and the night's low of an icy 39.2°F.
Today, the forecasted high of 66.2°F is more in line with September's average of 71.6°F than October's 53.8°F.
Sunrise was at 7:50 am and sunset will be at 6:39 pm; the daylight will last for 10h and 49min.
A stark contrast will be observed between the day's peak temperature of a breezy 66.2°F and the night's low of an icy 39.2°F.
Today, the forecasted high of 66.2°F is more in line with September's average of 71.6°F than October's 53.8°F.
Sunrise was at 7:50 am and sunset will be at 6:39 pm; the daylight will last for 10h and 49min.
10-day overview
Daily temperatures
Warmest day: Thursday 73°C.
Coldest period: Sunday - Monday 54°C.
Coldest period: Sunday - Monday 54°C.
Chance of precipitation
Highest chance: 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphNNW 341°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:50 am CDT
- Sunset: 6:39 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 43°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphE 86°
- Humidity: 54%
- UV index: 3
- Sunrise: 7:51 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 68°F
- 46°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 16mphS 174°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:52 am CDT
- Sunset: 6:35 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 46°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 9mphNNE 28°
- Humidity: 69%
- UV index: 3
- Sunrise: 7:54 am CDT
- Sunset: 6:34 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 73°F
- 57°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 13mphSE 142°
- Humidity: 68%
- UV index: 3
- Sunrise: 7:55 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 70°F
- 55°F
Mostly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0.08"
- Wind: 24mphSSE 163°
- Humidity: 58%
- UV index: 2
- Sunrise: 7:56 am CDT
- Sunset: 6:30 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 16mphW 267°
- Humidity: 68%
- UV index: 3
- Sunrise: 7:58 am CDT
- Sunset: 6:29 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 54°F
- 41°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 10mphNNW 332°
- Humidity: 61%
- UV index: 3
- Sunrise: 7:59 am CDT
- Sunset: 6:27 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 54°F
- 46°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 14mphSE 133°
- Humidity: 75%
- UV index: 3
- Sunrise: 8:01 am CDT
- Sunset: 6:25 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 57°F
- 45°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 15mphSSE 151°
- Humidity: 76%
- UV index: 2
- Sunrise: 8:02 am CDT
- Sunset: 6:24 pm CDT
- details ▼
Over the next ten days, conditions will reflect that a combination of sunny and gloomy weather is expected.
With a 24% probability, rainfall is predicted only for Friday. The precipitation will be minimal at 0.08".
There will be a considerable variation in temperature in the upcoming period. The maximum temperature will vary between 53.6°F and 73.4°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 39.2°F and 57.2°F.
Thursday will be the warmest day, with a maximum temperature of 73.4°F; next Sunday and Monday, with the highest temperature of 53.6°F, will be the coldest days.
With a 24% probability, rainfall is predicted only for Friday. The precipitation will be minimal at 0.08".
There will be a considerable variation in temperature in the upcoming period. The maximum temperature will vary between 53.6°F and 73.4°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 39.2°F and 57.2°F.
Thursday will be the warmest day, with a maximum temperature of 73.4°F; next Sunday and Monday, with the highest temperature of 53.6°F, will be the coldest days.
Updated: Oct 18, 2026 @ 14:07:42 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
Today, in Grenville, sunny conditions are expected to continue.
Today, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
Today, the highest temperature will be significantly higher than the average maximum of 53.8°F in October. The lowest temperature will be in line with the average low of 38.7°F.
Today, the highest temperature will be significantly higher than the average maximum of 53.8°F in October. The lowest temperature will be in line with the average low of 38.7°F.
On Sunday, in Grenville, sunrise was at 7:50 am and sunset will be at 6:39 pm (CDT).
Today, the daylight will last for 10h and 49min.
