Weather forecast for 10 daysAltamont, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 18mphWSW 254°
- Humidity: 49%
- UV index: 3
- Sunrise: 7:46 am CDT
- Sunset: 6:37 pm CDT
- details ▼
Today, on Sunday, October 18, skies will stay clear and sunny.
Temperature readings will span from a daytime high of a breezy 66.2°F to a night low of a wintry 39.2°F.
Forecasts show a high closer to September's climate pattern, around 72.5°F, rather than October's 56.3°F.
Sunrise will be at 7:46 am and sunset at 6:37 pm; the daylight will last for 10h and 50min.
Temperature readings will span from a daytime high of a breezy 66.2°F to a night low of a wintry 39.2°F.
Forecasts show a high closer to September's climate pattern, around 72.5°F, rather than October's 56.3°F.
Sunrise will be at 7:46 am and sunset at 6:37 pm; the daylight will last for 10h and 50min.
10-day overview
Daily temperatures
Warmest day: Thursday 75°C.
Coldest day: Sunday 25.10. 59°C.
Coldest day: Sunday 25.10. 59°C.
Chance of precipitation
Highest chance: Saturday 33%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 18mphWSW 254°
- Humidity: 49%
- UV index: 3
- Sunrise: 7:46 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 64°F
- 43°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 9mphENE 74°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:47 am CDT
- Sunset: 6:35 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 68°F
- 46°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 15mphS 179°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:49 am CDT
- Sunset: 6:33 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 43°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 8mphNW 307°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:50 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 57°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSSE 148°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:51 am CDT
- Sunset: 6:30 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 59°F
Mostly Cloudy / Wind
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 21mphSSE 168°
- Humidity: 52%
- UV index: 2
- Sunrise: 7:53 am CDT
- Sunset: 6:28 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 66°F
- 43°F
AM Showers
- Precip. probability: 33%
- Precipitation: 0.04"
- Wind: 20mphSW 226°
- Humidity: 59%
- UV index: 2
- Sunrise: 7:54 am CDT
- Sunset: 6:27 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 59°F
- 41°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphN 5°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:55 am CDT
- Sunset: 6:25 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 61°F
- 48°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 12mphSE 129°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:57 am CDT
- Sunset: 6:24 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 61°F
- 45°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 15mphSSE 158°
- Humidity: 67%
- UV index: 3
- Sunrise: 7:58 am CDT
- Sunset: 6:22 pm CDT
- details ▼
Over the next ten days, a mix of bright, overcast and showery weather is expected.
With a probability of 33%, rainfall is anticipated only on Saturday. Predicted precipitation will be minimal at 0.04".
Expect a substantial fluctuation in daytime highs over the next several days. Forecast highs will fluctuate between 59°F and 75.2°F, while the nightly low temperatures will show also a considerable swing, as temperatures overnight will fluctuate from 39.2°F up to 59°F.
Thursday is expected to be the warmest, reaching up to 75.2°F; the coldest day will be next Sunday, with a maximum of 59°F.
With a probability of 33%, rainfall is anticipated only on Saturday. Predicted precipitation will be minimal at 0.04".
Expect a substantial fluctuation in daytime highs over the next several days. Forecast highs will fluctuate between 59°F and 75.2°F, while the nightly low temperatures will show also a considerable swing, as temperatures overnight will fluctuate from 39.2°F up to 59°F.
Thursday is expected to be the warmest, reaching up to 75.2°F; the coldest day will be next Sunday, with a maximum of 59°F.
Updated: Oct 18, 2026 @ 11:10:02 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, expect bright skies and plenty of sunshine.
Today, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The highest temperature today will be noticeably higher than the average maximum of 56.3°F in October. The lowest temperature will be in line with the average low of 41°F.
The highest temperature today will be noticeably higher than the average maximum of 56.3°F in October. The lowest temperature will be in line with the average low of 41°F.
On Sunday, in Altamont, sunrise will be at 7:46 am and sunset at 6:37 pm (CDT).
Today, the daylight will last for 10h and 50min.





