An even grey lid over the water, with just enough NW wind to ripple the surface and pressure leaking away. The productive water at Upper Sister Lake will be around structure within a cast of the bank. A long productive spell runs afternoon into evening. A careful, quiet approach will out-fish a busy one.
The bites are average now
Night
In New York, Upper Sister Lake belongs to Herkimer County. It sits at 1,919 feet above sea level. Around 71 acres of surface means several distinct areas to work. About 1.3 miles of bank, so nothing stays unexplored for long. Size puts it in the front rank of our Herkimer County list. Tupper Lake at 28 miles is the nearest place to stop. Beyond it, Lowville at 37 miles and Boonville at 40 miles. A border sits close enough to be relevant to the paperwork.
Our records carry no depth, so judge it from the bank. Read the surface for the wind lane, then fish the edge of it. The productive water is a rod length or two out, not a hundred. Species logged across Herkimer County include white sucker, yellow perch, brook trout and brown bullhead. The county figures include rivers and lakes alike. On Upper Sister Lake a short move beats a long cast.
In an average year July sits at 64°F and January at 13°F. The middle months are generous; the ends are demanding. The lid arrives early and lasts until roughly late April. Average temperatures cross freezing around late April in spring and again near early December in autumn. The open run goes from the thaw to the freeze, and April through October covers most of it. Plan any trip to Upper Sister Lake around it.
Nothing on record says whether the bank is open or closed. No dam controls it, and the level follows the season. There is no mapped parking or launch close by, which usually means walking in. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Parking is often the real limit rather than the bank itself. Some water is controlled locally without a sign saying so. Lower Sister Lake sits 0.6 miles off and takes the overflow. Confirm access to Upper Sister Lake locally before you travel.
66%
The bites are average now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 2.7 | 0.6 | 3.7 | 1.8 | 2.1 | 2.1 | 4 | 4.5 | 4.9 | 5.9 | 4.6 | 5.3 | 5.4 | 6.4 | 6.2 | 6.2 | 6.1 | 6.1 | 6.3 | 6.2 | 7.2 | 7.5 | 8.2 | 8.8 |
| 47° | 47° | 46° | 47° | 48° | 47° | 46° | 45° | 43° | 43° | 43° | 43° | 43° | 43° | 44° | 43° | 43° | 42° | 42° | 42° | 41° | 41° | 40° | 40° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 |
| 29.86 | 29.86 | 29.86 | 29.85 | 29.84 | 29.84 | 29.85 | 29.86 | 29.86 | 29.86 | 29.85 | 29.86 | 29.85 | 29.82 | 29.82 | 29.82 | 29.81 | 29.81 | 29.81 | 29.81 | 29.82 | 29.82 | 29.82 | 29.83 |
| 90 | 92 | 92 | 93 | 93 | 94 | 93 | 92 | 92 | 92 | 91 | 90 | 90 | 88 | 88 | 89 | 90 | 91 | 91 | 91 | 91 | 92 | 91 | 92 |
Sam
AI Fishing Assistant for Upper Sister Lake
Morning
Afternoon
Evening
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time
Best bite time