Location & Surroundings
Interchange 399 is a road junction in South Dakota, United States, at 437 m elevation. The nearest larger town is Sioux Falls, 7 km to the south. The national capital Washington is about 1720 km to the east. The nearest airport is Joe Foss Field, 4 km away.
Also known as: Exit 399
Basic Data
- Type road junction (RDJCT)
- a place where two or more roads join
Geography
-
Coordinates
43° 36' 21" N, 96° 42' 41" W
- Elevation 437 m (DEM: 437 m)
- Timezone America/Chicago
- Time Shift GMT -6 (DST -5)
Statistics & Country
- Pop. Density 118 p/km²
- Built-up 14.4%
- Settlement Low density rural
- Currency Dollar (USD)
- Phone Prefix +1
Sun & Local Time
- Local time 05:38
- Sunrise 07:52
- Sunset 18:29
- Day length 10 h 37 min
Other road junctions nearby
Nearby
Alternate Names
Weather in Interchange 399
Current conditions and a 3-day (72-hour) weather forecast for Interchange 399, updated from the NOAA GFS model.
Now 10.6 C with overcast skies and a 4.1 m/s northerly wind. Next 24h: 6.3 to 10.6 C, max wind 5.1 m/s. Precip around 0.8 mm. Solar peaks near 40 W/m2.
Temperature
10.6 C
Wind
4.1 m/s N (343 deg)
Humidity
68 %
Pressure
1,026.7 hPa
Clouds
100 %
Precip
0.77 mm
Solar
0.0 W/m2
UV-B
n/a
| Hour | Temp (C) | Wind (m/s) | Dir (deg) | RH (%) | Pressure (hPa) | Precip (step/total mm) | Clouds (%) | Solar (W/m2) | UV-B (W/m2) |
|---|---|---|---|---|---|---|---|---|---|
| NOW | 10.6 | 4.1 | 343 | 68 | 1,026.7 | - / 0.00 | 100 | 0.0 | n/a |
| 6h | 9.0 | 2.1 | 27 | 84 | 1,028.3 | 4.25 / 4.25 | 92 | 0.0 | n/a |
| 12h | 9.4 | 2.4 | 54 | 74 | 1,029.3 | 0.00 / 0.27 | 100 | 0.0 | n/a |
| 18h | 8.8 | 3.5 | 35 | 65 | 1,030.5 | 0.28 / 0.55 | 100 | 29.3 | n/a |
| Tomorrow | 6.3 | 5.1 | 44 | 76 | 1,030.4 | 0.22 / 0.77 | 100 | 39.5 | n/a |
| 30h | 5.9 | 5.0 | 49 | 90 | 1,030.6 | 1.56 / 2.33 | 100 | 0.0 | n/a |
| 36h | 5.8 | 7.9 | 61 | 93 | 1,028.0 | 7.04 / 9.37 | 100 | 0.0 | n/a |
| 42h | 5.7 | 6.9 | 68 | 93 | 1,026.9 | 3.55 / 12.92 | 100 | 9.0 | n/a |
| Tuesday | 6.3 | 6.3 | 79 | 92 | 1,022.4 | 0.00 / 8.06 | 100 | 18.4 | n/a |
| 54h | 11.9 | 6.0 | 123 | 90 | 1,015.9 | 0.00 / 1.41 | 100 | 0.0 | n/a |
| 60h | 7.7 | 4.9 | 230 | 93 | 1,018.1 | 0.00 / 0.09 | 96 | 0.0 | n/a |
| 66h | 12.3 | 4.4 | 189 | 71 | 1,017.6 | 0.00 / 0.00 | 100 | 225.1 | n/a |
| Wednesday | 12.7 | 3.0 | 173 | 89 | 1,015.0 | 0.12 / 0.12 | 100 | 88.6 | n/a |
Source: NOAA GFS 0.25° (run 2026-10-25 00:00 UTC).
FAQ
What is the current weather and next 24-hour outlook in Interchange 399?
Now 10.6 C with overcast skies and a 4.1 m/s northerly wind. Next 24h: 6.3 to 10.6 C, max wind 5.1 m/s. Precip around 0.8 mm. Solar peaks near 40 W/m2.
Is precipitation expected in the next 24 hours?
Around 0.8 mm of precipitation is expected in the next 24 hours.
When are sunrise and sunset in Interchange 399 today?
Sunrise around 07:52 and sunset around 18:29 (local time). Day length about 10h 37m.
What is the local time in Interchange 399?
Local time is 05:38. Time zone: America/Chicago (UTC-05:00).
What type of place is Interchange 399?
Interchange 399 is a road junction.
What is the elevation of Interchange 399?
Elevation about 437 m. DEM 437 m.
Where is Interchange 399 located?
It is at 43.60571, -96.71134 (latitude, longitude).
Which country is Interchange 399 in?
It is in United States.