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I-29 South Dakota Road Conditions
Radar and live pavement conditions on the 253 miles of I-29 in South Dakota — plus closures, road work and city-by-city weather across the state.
Updated Sep 11, 2026 1:33 AM UTC · Mostly dry
Lowest 77°F near Sioux Falls, South Dakota · Highest wind 15 mph near Watertown, South Dakota
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I-29 runs 253 miles across South Dakota. It passes Sioux Falls and Watertown.
- Interstate: I-29
- State: South Dakota
- Length in state: 253 mi
Weather data from Sep 11, 2026 1:33 AM UTC
77°F
82°F
15 mph
29.70-29.90 inHg
Current I-29 in South Dakota Conditions by State
South Dakota I-29 in South Dakota road conditions
Dry
- Sioux Falls 78°F · 13 mph wind · Dry
- Watertown 78°F · 13 mph wind · Dry
I-29 crosses 253 miles of South Dakota, between the Iowa line and the North Dakota line. That is 34% of I-29's 751 miles.
Inside South Dakota it meets I-90 at Sioux Falls.
No full closures are reported on I-29 in South Dakota as of Sep 11, 2026 1:33 AM UTC, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
| Place | Snow a year | Snow days | Freezing nights | Freeze–thaw days | First freeze | Last freeze | Days over 90°F |
|---|---|---|---|---|---|---|---|
| Sioux Falls | 44.5" | 32.4 | 164.3 | 99.2 | Sep 29 | May 3 | 13.8 |
NOAA 1991–2020 Climate Normals, from a weather station in South Dakota. A dash is a figure that station does not report, not a zero.
Towns Along I-29 in South Dakota
From North Sioux City to Sisseton, with the position of each town measured along this stretch itself — counted from the North Sioux City end, not from a state milepost, so it will not match the numbers on the signs.
- 3 mi North Sioux City
- 17 mi Elk Point
- 47 mi Beresford
- 71 mi Harrisburg 4.2 mi off the road
- 73 mi Tea 1.3 mi off the road
- 79 mi Sioux Falls 2.4 mi off the road
- 87 mi Crooks 1.5 mi off the road
- 94 mi Baltic 2.2 mi off the road
- 130 mi Aurora 3.7 mi off the road
- 132 mi Brookings 1.4 mi off the road
- 232 mi Sisseton 2.8 mi off the road
Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.
Summaries fetched Sep 10, 2026 12:06 PM UTC
Sioux Falls, SD weather
- The current weather in Sioux Falls, SD, shows mostly sunny conditions with a temperature of 54°F and a humidity level of 95%
- The wind is light, blowing from the southeast at 0 to 1 mph
- The visibility is good at 10.0 miles, and there are no significant weather alerts at this time
- Atmospheric pressure is measured at 30.09 inHg
- Overall, it is a pleasant morning with comfortable temperatures.
I-29 in South Dakota Road Weather FAQ
- Is Interstate 29 in South Dakota closed right now?
- No full closures are reported on I-29 in South Dakota. No lane closures or roadworks are reported either.
- What are I-29 in South Dakota road conditions today?
- The map on this page colors the route along I-29 in South Dakota by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 11, 2026 1:33 AM UTC. Right now temperatures run from 77°F to 82°F and the strongest wind is 15 mph.
- Where are South Dakota road closures reported officially?
- South Dakota's official traveler information service is sd511.org, and it is where closures and restrictions are reported.
- How often are I-29 in South Dakota road conditions updated?
- The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.
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