Weather forecast for 10 daysGann Valley, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphNE 40°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:54 am CDT
- Sunset: 6:47 pm CDT
- details ▼
Today, on Sunday, October 18, expect consistent sunshine and open skies.
Significant variations in temperature are forecasted, peaking at a delightful 68°F and dropping to a low of a cold 39.2°F.
Sunrise was at 7:54 am and sunset will be at 6:47 pm; the daylight will last for 10h and 53min.
Significant variations in temperature are forecasted, peaking at a delightful 68°F and dropping to a low of a cold 39.2°F.
Sunrise was at 7:54 am and sunset will be at 6:47 pm; the daylight will last for 10h and 53min.
10-day overview
Daily temperatures
Warmest day: Friday 77°C.
Coldest day: Sunday 25.10. 57°C.
Coldest day: Sunday 25.10. 57°C.
Chance of precipitation
Highest chance: 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphNE 40°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:54 am CDT
- Sunset: 6:47 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 41°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphE 82°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:55 am CDT
- Sunset: 6:45 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 46°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 14mphSSE 158°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:57 am CDT
- Sunset: 6:44 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 45°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphNE 43°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:58 am CDT
- Sunset: 6:42 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 57°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 12mphSE 135°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:59 am CDT
- Sunset: 6:40 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 52°F
Partly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0.04"
- Wind: 22mphSSE 158°
- Humidity: 60%
- UV index: 3
- Sunrise: 8:01 am CDT
- Sunset: 6:39 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 59°F
- 39°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 15mphWNW 302°
- Humidity: 65%
- UV index: 3
- Sunrise: 8:02 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 41°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 9mphESE 102°
- Humidity: 64%
- UV index: 3
- Sunrise: 8:03 am CDT
- Sunset: 6:36 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 61°F
- 46°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 12mphSE 140°
- Humidity: 77%
- UV index: 2
- Sunrise: 8:04 am CDT
- Sunset: 6:34 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 59°F
- 45°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 14mphSE 142°
- Humidity: 72%
- UV index: 3
- Sunrise: 8:06 am CDT
- Sunset: 6:33 pm CDT
- details ▼
Weather patterns suggest that a combination of clear and overcast weather is expected.
With a 24% probability, rainfall is forecasted only for Friday. Anticipated precipitation will be minimal at 0.04".
Expect a substantial fluctuation in daytime highs in the upcoming period. Maximum temperatures are forecasted between 57.2°F and 77°F, while the fluctuation in night temperatures will be also significant, as temperatures overnight will fluctuate from 39.2°F up to 57.2°F.
With the highest temperature of 77°F, Friday will be the warmest day; the coldest day will be next Sunday, with a maximum of 57.2°F.
With a 24% probability, rainfall is forecasted only for Friday. Anticipated precipitation will be minimal at 0.04".
Expect a substantial fluctuation in daytime highs in the upcoming period. Maximum temperatures are forecasted between 57.2°F and 77°F, while the fluctuation in night temperatures will be also significant, as temperatures overnight will fluctuate from 39.2°F up to 57.2°F.
With the highest temperature of 77°F, Friday will be the warmest day; the coldest day will be next Sunday, with a maximum of 57.2°F.
Updated: Oct 18, 2026 @ 15:51:45 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
On Sunday, sunny and dry conditions are anticipated.
Today, the highest temperature will be 68°F, while the lowest temperature will be 39.2°F.
On Sunday, in Gann Valley, sunrise was at 7:54 am and sunset will be at 6:47 pm (CDT).
In Gann Valley, the length of the day today will be 10h and 53min.
