Weather forecast for 10 daysHarrisburg, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 15mphS 191°
- Humidity: 38%
- UV index: 4
- Sunrise: 7:44 am CDT
- Sunset: 6:38 pm CDT
- details ▼
Today, on Sunday, October 18, sunshine is forecasted under mostly clear skies.
A stark contrast will be observed between the day's peak temperature of a delightful 68°F and the night's low of a cold 39.2°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 68°F.
Sunrise was at 7:44 am and sunset will be at 6:38 pm; the daylight will last for 10h and 54min.
A stark contrast will be observed between the day's peak temperature of a delightful 68°F and the night's low of a cold 39.2°F.
Today, meteorological data suggests the high will feel more like September, based on a forecast of 68°F.
Sunrise was at 7:44 am and sunset will be at 6:38 pm; the daylight will last for 10h and 54min.
10-day overview
Daily temperatures
Warmest day: Thursday 77°C.
Coldest period: Sunday - Monday 59°C.
Coldest period: Sunday - Monday 59°C.
Chance of precipitation
Highest chance: Saturday 46%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 15mphS 191°
- Humidity: 38%
- UV index: 4
- Sunrise: 7:44 am CDT
- Sunset: 6:38 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 43°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 10mphESE 118°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:46 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 48°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 16mphSSE 160°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:47 am CDT
- Sunset: 6:35 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 48°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphS 174°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:48 am CDT
- Sunset: 6:34 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 57°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSE 139°
- Humidity: 65%
- UV index: 3
- Sunrise: 7:49 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 75°F
- 59°F
Mostly Cloudy / Wind
- Precip. probability: 14%
- Precipitation: 0.04"
- Wind: 22mphSSE 157°
- Humidity: 53%
- UV index: 3
- Sunrise: 7:51 am CDT
- Sunset: 6:31 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 64°F
- 45°F
AM Showers
- Precip. probability: 46%
- Precipitation: 0.12"
- Wind: 13mphSW 230°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:52 am CDT
- Sunset: 6:29 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 59°F
- 46°F
Mostly Sunny
- Precip. probability: 14%
- Precipitation: 0.04"
- Wind: 8mphENE 71°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:53 am CDT
- Sunset: 6:28 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 59°F
- 50°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphSE 130°
- Humidity: 77%
- UV index: 2
- Sunrise: 7:54 am CDT
- Sunset: 6:26 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 63°F
- 48°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 14mphSSE 152°
- Humidity: 69%
- UV index: 3
- Sunrise: 7:56 am CDT
- Sunset: 6:25 pm CDT
- details ▼
dry and sunny, cloud-filled and damp weather is predicted.
Rainfall is forecasted for Friday through next Sunday.
The temperature will vary considerably in the upcoming period. Forecast highs will fluctuate between 59°F and 77°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.
With the highest temperature of 77°F, Thursday will be the warmest day; with a maximum temperature of 59°F, next Sunday and Monday will be the coldest days in Harrisburg.
Rainfall is forecasted for Friday through next Sunday.
The temperature will vary considerably in the upcoming period. Forecast highs will fluctuate between 59°F and 77°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.
With the highest temperature of 77°F, Thursday will be the warmest day; with a maximum temperature of 59°F, next Sunday and Monday will be the coldest days in Harrisburg.
Updated: Oct 18, 2026 @ 16:54:28 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, the forecast calls for abundant sunshine.
Today, the maximum temperature will be 68°F, while the minimum temperature will be 39.2°F.
The highest temperature will be notably higher than the average maximum of 58.1°F in October. The lowest temperature will be in line with the average low of 41.9°F.
The highest temperature will be notably higher than the average maximum of 58.1°F in October. The lowest temperature will be in line with the average low of 41.9°F.
On Sunday, in Harrisburg, sunrise was at 7:44 am and sunset will be at 6:38 pm (CDT).
Today, the daylight will last for 10h and 54min.
