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: 16mphS 190°
- Humidity: 44%
- UV index: 4
- Sunrise: 7:44 am CDT
- Sunset: 6:38 pm CDT
- details ▼
Today, on Sunday, October 18, sunny skies are in store, with excellent visibility.
Dramatic temperature shifts from a high of a pleasant 68°F to a low of a wintry 39.2°F are anticipated.
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.
Dramatic temperature shifts from a high of a pleasant 68°F to a low of a wintry 39.2°F are anticipated.
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 day: Monday 26.10. 59°C.
Coldest day: Monday 26.10. 59°C.
Chance of precipitation
Highest chance: Saturday 49%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 16mphS 190°
- Humidity: 44%
- 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: 10%
- Precipitation: 0"
- Wind: 10mphESE 119°
- 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: 15mphSSE 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 175°
- 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 141°
- 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: 49%
- Precipitation: 0.12"
- Wind: 13mphSW 231°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:52 am CDT
- Sunset: 6:29 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 61°F
- 46°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0.04"
- Wind: 9mphENE 73°
- Humidity: 63%
- 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: 76%
- UV index: 2
- Sunrise: 7:54 am CDT
- Sunset: 6:26 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 64°F
- 48°F
Partly Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 14mphSSE 153°
- Humidity: 68%
- UV index: 3
- Sunrise: 7:56 am CDT
- Sunset: 6:25 pm CDT
- details ▼
For the next ten days, a combination of dry and sunny, cloudy and rainy weather is anticipated.
Rainfall is predicted for Friday and Saturday.
Expect a substantial fluctuation in daytime highs in the upcoming period. Highs will range from 59°F to 77°F, while the variation in nighttime lows will be also notably wide, as nighttime lows are forecast to fall between 39.2°F and 59°F.
Expect the warmest day on Thursday, with temperatures peaking at 77°F; the lowest daytime temperature of the period will be reached on next Monday, peaking at 59°F.
Rainfall is predicted for Friday and Saturday.
Expect a substantial fluctuation in daytime highs in the upcoming period. Highs will range from 59°F to 77°F, while the variation in nighttime lows will be also notably wide, as nighttime lows are forecast to fall between 39.2°F and 59°F.
Expect the warmest day on Thursday, with temperatures peaking at 77°F; the lowest daytime temperature of the period will be reached on next Monday, peaking at 59°F.
Updated: Oct 18, 2026 @ 14:23:05 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 Harrisburg, expect sunny weather with a crisp, clear sky.
Today, the highest temperature will be 68°F, while the lowest temperature will be 39.2°F.
The highest temperature today will be significantly higher than the average maximum of 58.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
The highest temperature today will be significantly higher than the average maximum of 58.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
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.
