Get the appFishing index · South Dakota
Sioux Falls, South Dakota sits at Big Sioux River and Lake Vermillion, where local anglers mainly chase walleye, channel catfish, northern pike. Sioux Falls works the Big Sioux and the metro-area lakes for walleye and pike, while the Missouri River reservoirs to the west are where the state's trophy walleye numbers come from.
LureScore index · 2026-10-29
The score combines air temperature, pressure level and stability, wind, rain, season and a short-range trend trigger. It is a timing aid — not a fish finder.
7-day outlook
| Day | Index | Temp | Wind | Pressure | Sky |
|---|---|---|---|---|---|
| Today 2026-10-29 | 55 Fair | 61° / 36°F | 9 mph | 30.18 inHg | Fog |
| Tomorrow 2026-10-30 | 50 Fair | 52° / 43°F | 11 mph | 30.21 inHg | Light drizzle |
| Saturday 2026-10-31 | 50 Fair | 59° / 46°F | 15 mph | 30.12 inHg | Fog |
| Sunday 2026-11-01 | 47 Fair | 57° / 55°F | 12 mph | 30.03 inHg | Light drizzle |
| Monday 2026-11-02 | 26 Poor | 62° / 57°F | 23 mph | 29.65 inHg | Showers |
| Tuesday 2026-11-03 | 35 Poor | 60° / 45°F | 18 mph | 29.74 inHg | Dense drizzle |
| Wednesday 2026-11-04 | 64 Fair | 56° / 41°F | 10 mph | 29.88 inHg | Partly cloudy |
Daily highs/lows in °F, max wind in mph, mean sea-level pressure in inHg. Scores are computed per local forecast day.
Estimated water temperature · 2026-10-29
11.3 °C, most likely between 7.8 and 14.7 °C (about 46–58 °F). A modelled estimate for the water around Sioux Falls on 2026-10-29, not a gauge reading.
Built from the last 7 days of daily mean air temperature (weighted toward recent days), a seasonal phase term, and coefficients fitted against 55 USGS gauges across 171,799 daily records; leave-one-station-out error is 1.96 °C. Large reservoir releases, spring-fed reaches, deep pools and tidal water can sit well outside this range. Water temperature tells you how actively fish are likely to feed — it does not tell you where they are. How this estimate works →
Model baseline_v1.0 · coefficients usgs_v1_20261022 (55 stations, fitted 2026-10-22)
Weather data by Open-Meteo.com (CC BY 4.0). Index scores and water-temperature estimates are our own derivation from that data.
Sioux Falls works the Big Sioux and the metro-area lakes for walleye and pike, while the Missouri River reservoirs to the west are where the state's trophy walleye numbers come from. The table above recomputes the index for each of the next seven days from that day's forecast, so you can time an outing to the strongest window instead of fishing the calendar.
Autumn brings cooling water and aggressive feeding ahead of winter — often the most consistent index readings of the year.
Windows are scored on the same model as the daily index. Sunrise and sunset edges are built into the schedule; the strongest mornings usually follow a stable or improving pressure trend.
The waters around Sioux Falls include Big Sioux River and Lake Vermillion. Sioux Falls works the Big Sioux and the metro-area lakes for walleye and pike, while the Missouri River reservoirs to the west are where the state's trophy walleye numbers come from. Start with public access points on these systems, check local regs, and let the daily index above guide timing.
The usual targets are Walleye, Channel catfish and Northern pike in and around Sioux Falls. Seasonal timing shifts the bite — the forecast table on this page is computed for the same weather signals that matter for these species.
Yes — a South Dakota state fishing license is required for anglers 16 and older (saltwater and freshwater endorsements may differ). Buy one through the South Dakota state wildlife or natural-resources agency before you fish.
The index recommends the strongest windows printed under today's score — typically the low-light morning and evening windows. Sunrise and sunset edges are almost always worth more casts than midday, especially in the warmer months.
The LureScore index is an informational planning signal based on weather, not a guarantee of fish activity or a catch. Always follow local regulations.