BirdTroutOpen the map Ontonagon River fishing report
No gauge on the Ontonagon River is reporting a temperature at the moment. Its measured July mean is 70.7 °F, which is what this page falls back to. September is Blue-Winged Olive, Cranefly, Green Rock Worm / Green Weenie and Caterpillar in this region — 15 insects are recorded as active.
Water temperature right now
No gauge on this river answered with a temperature when this page was built. That is a gap in the gauge network, not a judgement about the water.
What is hatching in September
| Insect | Hook | Active at |
|---|---|---|
| Blue-Winged Olive | #16–22 | 38–58 °F |
| Cranefly | #6–10 | 40–65 °F |
| Green Rock Worm / Green Weenie | #10–14 | 45–68 °F |
| Caterpillar | #8–14 | 55–75 °F |
| Crayfish | #4–8 | 55–78 °F |
| Black Ant | #14–20 | 55–80 °F |
| Isonychia / Slate Drake | #10–14 | 55–70 °F |
| Leafhopper | #18–22 | 58–75 °F |
| Little Yellow May | #16–18 | 58–70 °F |
| Grasshopper | #8–12 | 60–80 °F |
| White Miller | #14–18 | 60–74 °F |
| Cinnamon Flying Ant | #16–20 | 58–78 °F |
| Mahogany Dun | #16–18 | 45–58 °F |
| October Caddis | #8–10 | 45–58 °F |
| Water Boatman | #14–18 | 45–65 °F |
The rest of the state
This is one river. The Michigan report covers every region at once, and is refreshed at the same time as this page.
More about Ontonagon River
Ontonagon River — live water temperature, regulations and access
- When to fish the Ontonagon River, Michigan
- How to get to the Ontonagon River, Michigan
- Ontonagon River fishing regulations