Get the appFishing index · Wyoming
Casper, Wyoming sits at North Platte River and Pathfinder Reservoir, where local anglers mainly chase rainbow trout, brown trout, walleye. Casper anchors the North Platte's world-class trout water below the dam, while Pathfinder Reservoir to the southwest adds walleye that chase the windward shore in the spring drawdown.
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 | 66 Good | 63° / 32°F | 14 mph | 30 inHg | Overcast |
| Tomorrow 2026-10-30 | 50 Fair | 66° / 36°F | 15 mph | 29.88 inHg | Overcast |
| Saturday 2026-10-31 | 54 Fair | 59° / 41°F | 22 mph | 29.85 inHg | Overcast |
| Sunday 2026-11-01 | 55 Fair | 62° / 45°F | 9 mph | 29.77 inHg | Overcast |
| Monday 2026-11-02 | 73 Good | 52° / 37°F | 13 mph | 29.94 inHg | Dense drizzle |
| Tuesday 2026-11-03 | 73 Good | 55° / 35°F | 15 mph | 30.15 inHg | Partly cloudy |
| Wednesday 2026-11-04 | 49 Fair | 62° / 43°F | 10 mph | 29.83 inHg | Overcast |
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
8.5 °C, most likely between 5.2 and 11.8 °C (about 41–53 °F). A modelled estimate for the water around Casper 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.
Casper anchors the North Platte's world-class trout water below the dam, while Pathfinder Reservoir to the southwest adds walleye that chase the windward shore in the spring drawdown. 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 Casper include North Platte River and Pathfinder Reservoir. Casper anchors the North Platte's world-class trout water below the dam, while Pathfinder Reservoir to the southwest adds walleye that chase the windward shore in the spring drawdown. Start with public access points on these systems, check local regs, and let the daily index above guide timing.
The usual targets are Rainbow trout, Brown trout and Walleye in and around Casper. 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 Wyoming state fishing license is required for anglers 16 and older (saltwater and freshwater endorsements may differ). Buy one through the Wyoming 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.