Loading page content…
Loading page content…
Loading lake conditions…
Harriman Reservoir is a reservoir in Vermont. Fish documented in the area include Smallmouth Bass, Brown Trout, Yellow Perch, and Rock Bass. The water surface spans about 2,184 acres, making it a mid-sized body of water. A nearby water gauge supplies level and temperature readings where available. The page brings together an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Nearby alternatives include Quabbin Reservoir, Lake Sunapee, and Townshend Lake. Current weather, wind, and activity conditions for Harriman Reservoir are updated throughout the day.
Updated
No active alerts for this lake as of the last check (Oct 11, 1:45 AM EDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (86/100) across 4 activities. Best right now: Boating (100/100).
How the score is calculated →Best good fishing window, averaging 87/100 across these hours. Wind 1 mph from the south. Dawn hours (07:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 41° | 41° | 41° | 40° | 40° | 40° | 40° | 43° | 48° | 52° | 54° | 56° | 57° | 57° | 57° | 55° | 55° | 54° | 50° | 49° | 48° | 48° | 49° | 49° |
| Wind (kts) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Direction | — | — | — | — | — | — | S | S | S | S | S | S | S | S | S | S | SE | SE | SE | — | — | — | — | — |
| Gusts (kts) | 2 | 2 | 3 | 3 | 3 | 4 | 5 | 6 | 7 | 9 | 10 | 10 | 10 | 10 | 9 | 8 | 7 | 6 | 5 | 5 | 4 | 4 | 4 | 4 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 3% | 6% | 12% | 25% | 31% | 36% | 45% | 48% | 69% | 68% | 76% | 100% | 100% | 99% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 1 AM EDT | 41°F | Calm | 2 mph | 0% | 57% | Mostly Cloudy |
| Sun, 2 AM EDT | 41°F | Calm | 2 mph | 0% | 63% | Mostly Cloudy |
| Sun, 3 AM EDT | 41°F | Calm | 4 mph | 0% | 55% | Mostly Cloudy |
| Sun, 4 AM EDT | 40°F | Calm | 4 mph | 0% | 40% | Partly Cloudy |
| Sun, 5 AM EDT | 40°F | Calm | 4 mph | 0% | 74% | Mostly Cloudy |
| Sun, 6 AM EDT | 40°F | Calm | 5 mph | 0% | 73% | Mostly Cloudy |
| Sun, 7 AM EDT | 40°F | 1 mph S (180°) | 6 mph | 0% | 77% | Mostly Cloudy |
| Sun, 8 AM EDT | 43°F | 1 mph S (180°) | 7 mph | 0% | 79% | Mostly Cloudy |
| Sun, 9 AM EDT | 48°F | 2 mph S (180°) | 8 mph | 1% | 77% | Mostly Cloudy |
| Sun, 10 AM EDT | 52°F | 3 mph S (180°) | 10 mph | 1% | 83% | Mostly Cloudy |
| Sun, 11 AM EDT | 54°F | 3 mph S (180°) | 12 mph | 3% | 73% | Mostly Cloudy |
| Sun, 12 PM EDT | 56°F | 3 mph S (180°) | 12 mph | 6% | 93% | Cloudy |
| Sun, 1 PM EDT | 57°F | 3 mph S (180°) | 12 mph | 12% | 95% | Cloudy |
| Sun, 2 PM EDT | 57°F | 3 mph S (180°) | 12 mph | 25% | 95% | Chance Rain Showers |
| Sun, 3 PM EDT | 57°F | 3 mph S (180°) | 10 mph | 31% | 96% | Chance Rain Showers |
| Sun, 4 PM EDT | 55°F | 2 mph S (180°) | 9 mph | 36% | 96% | Chance Rain Showers |
| Sun, 5 PM EDT | 55°F | 2 mph SE (135°) | 8 mph | 45% | 96% | Chance Rain Showers |
| Sun, 6 PM EDT | 54°F | 1 mph SE (135°) | 7 mph | 48% | 96% | Chance Rain Showers |
| Sun, 7 PM EDT | 50°F | 1 mph SE (135°) | 6 mph | 69% | 96% | Rain Showers Likely |
| Sun, 8 PM EDT | 49°F | Calm | 6 mph | 68% | 97% | Rain Showers Likely |
| Sun, 9 PM EDT | 48°F | Calm | 5 mph | 76% | 97% | Rain Showers |
| Sun, 10 PM EDT | 48°F | Calm | 5 mph | 100% | 100% | Rain Showers |
| Sun, 11 PM EDT | 49°F | Calm | 5 mph | 100% | 100% | Rain Showers |
| Mon, 12 AM EDT | 49°F | Calm | 5 mph | 99% | 100% | Rain Showers |
| Mon, 1 AM EDT | 48°F | Calm | 5 mph | 87% | 97% | Rain Showers |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | Overnight October 11, 2026 | Sunday October 11, 2026 | Sunday Night October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 39° | 57° | 46° | 66° | 46° | 58° | 49° | 59° | 40° | 55° | 37° | 53° | 40° | 49° |
| Wind | 0 mph | S 0 to 3 mph | E 1 mph | N 3 mph | NE 2 mph | SE 1 to 5 mph | SW 2 to 6 mph | W 6 mph | NW 5 mph | NW 5 mph | NW 3 mph | SW 6 mph | SW 3 to 8 mph | W 8 mph |
| Gusts | 4 mph | 12 mph | 7 mph | 9 mph | 8 mph | 14 mph | 17 mph | 17 mph | 15 mph | 15 mph | 10 mph | 18 mph | 22 mph | 23 mph |
| Precip % | 0% | 45% | 100% | 18% | 26% | 55% | 79% | 47% | 14% | 10% | 22% | 47% | 61% | 48% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Harriman Reservoir. Not available from a verified source for this lake.
Nearby river temperature: 48.9°F at GREEN RIVER NEAR COLRAIN, MA (16.9 mi away) · Oct 11, 5:00 AM UTC
Good for fishing (80/100), from 5 available inputs. Supporting this: Wind 0 mph from the west-southwest. 0% chance of precipitation. Working against it: Air temperature 41°F. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Excellent for boating (100/100), from 4 available inputs. Supporting this: Wind 0 mph from the west-southwest. Gusts to 2 mph. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Fair for sailing (63/100), from 4 available inputs. Supporting this: Gusts are within 2 mph of sustained wind, so the breeze is steady. No active official alerts for this lake. Working against it: Wind 0 mph is light; expect limited sailing. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (97/100), from 5 available inputs. Supporting this: Wind 0 mph from the west-southwest. Gusts to 2 mph. Working against it: Air temperature 41°F. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
Loading interactive map…
Individual boat ramp GPS coordinates are maintained under the jurisdiction of VT Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
A versatile water resource in VT, Harriman Reservoir offers expansive open waters for motorized cruising, sailing, and shoreline fishing. The lake's dynamic character across the seasons attracts outdoor enthusiasts year-round. Check current USGS streamflow gauges, water temperatures, and state regulations for the best experience.
Valid freshwater sport fishing license issued by Vermont Fish and Wildlife Department is required for anglers age 15+. Digital license on mobile is accepted.
Current motorized watercraft registration mandatory. Practice Clean, Drain & Dry protocols: drain all livewells and inspect props before launching. Life jackets required for all passengers.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Smallmouth Bass, Brown Trout, Yellow Perch, Rock Bass. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Northern cold winter conditions with freezing air temperatures and potential surface ice formation. Ramps and water systems may be winterized. Confirm open status before visiting.
No external source rows are cited by the data currently shown on this page.
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Harriman Reservoir is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 11, 1:45 AM EDT