Get the appFishing index · by state
Colorado fishing is trout-first: freestone and tailwater rivers across the Front Range and mountains, with the best dry-fly windows tied to hatch cycles.
South Platte River · Clear Creek
Weather data by Open-Meteo.com (CC BY 4.0). Index scores and water-temperature estimates are our own derivation from that data.
The score on each city card is computed from the local weather forecast for today. Open a city page for the full seven-day outlook, factor breakdown and recommended windows. Fishing rules in Colorado vary by water type and season, so always check the current regulations before you go.
Seasonally, Colorado's strongest month across 2 years of recorded weather at Denver is July — 81% of its days rate Good or better — and April is the weakest at 13%. That is roughly 150 good days a year. See the season report for the best time of year to fish in Colorado and every other state's month-by-month table.
Colorado fishing is trout-first: freestone and tailwater rivers across the Front Range and mountains, with the best dry-fly windows tied to hatch cycles. Use the city page below for a live weather-based index, then check the Colorado wildlife agency for seasons and limits.
Yes, anglers 16 and older need a Colorado fishing license. Buy through the Colorado state wildlife or natural-resources agency; rules can differ between freshwater and tidal water.
The LureScore index is an informational planning signal based on weather, not a guarantee of fish activity or a catch. Always follow local regulations.