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Jenny Lake is one of the lakes LakeRadar tracks in Wyoming. Sitting at around 6,783 feet of elevation, it drops to a maximum depth near 423 feet. It covers roughly 1,191 surface acres (about 2 square miles). Research-grade observations nearby include Mountain Whitefish, Mackinaw (Lake Trout), Rainbow Trout, and Brown Trout. Nearby alternatives include Leigh Lake, Jackson Lake, and Yellowstone Lake. 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. Check the hourly forecast and activity outlook below before heading out to Jenny Lake.
Updated
Updated
Alerts are published by official agencies and shown verbatim. View the official alert source.
Hydrologic Outlook issued October 8 at 1:47PM MDT by NWS Riverton WY
Overall Good (82/100) across 4 activities. Best right now: Boating (84/100).
How the score is calculated →Best excellent fishing window, averaging 90/100 across these hours. Wind 7 mph from the southwest. Dawn hours (06:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 43° | 42° | 45° | 44° | 43° | 44° | 47° | 52° | 57° | 62° | 66° | 67° | 69° | 67° | 67° | 63° | 57° | 55° | 54° | 52° | 52° | 51° | 51° | 50° |
| Wind (kts) | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 9 | 11 | 13 | 14 | 14 | 13 | 12 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 10 | 11 |
| Direction | SW | SW | SW | SW | SW | SW | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gusts (kts) | 9 | 9 | 9 | 10 | 11 | 11 | 12 | 14 | 17 | 20 | 24 | 26 | 27 | 28 | 27 | 24 | 25 | 28 | 28 | 30 | 29 | 28 | 23 | 23 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 4% | 19% | 18% | 20% | 20% | 9% | 3% | 1% | 1% | 2% | 2% | 2% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 3 AM MDT | 43°F | 6 mph SSW (203°) | 10 mph | 0% | 7% | Mostly Clear |
| Fri, 4 AM MDT | 42°F | 6 mph SW (225°) | 10 mph | 0% | 11% | Mostly Clear |
| Fri, 5 AM MDT | 45°F | 7 mph SW (225°) | 10 mph | 0% | 13% | Mostly Clear |
| Fri, 6 AM MDT | 44°F | 7 mph SW (225°) | 12 mph | 0% | 13% | Sunny |
| Fri, 7 AM MDT | 43°F | 7 mph SW (225°) | 13 mph | 0% | 12% | Sunny |
| Fri, 8 AM MDT | 44°F | 7 mph SSW (203°) | 13 mph | 0% | 15% | Sunny |
| Fri, 9 AM MDT | 47°F | 7 mph S (180°) | 14 mph | 0% | 12% | Sunny |
| Fri, 10 AM MDT | 52°F | 8 mph S (180°) | 16 mph | 0% | 3% | Sunny |
| Fri, 11 AM MDT | 57°F | 10 mph S (180°) | 20 mph | 0% | 4% | Sunny |
| Fri, 12 PM MDT | 62°F | 13 mph SSW (203°) | 23 mph | 0% | 3% | Sunny |
| Fri, 1 PM MDT | 66°F | 15 mph SSW (203°) | 28 mph | 0% | 4% | Sunny |
| Fri, 2 PM MDT | 67°F | 16 mph SW (225°) | 30 mph | 0% | 6% | Sunny |
| Fri, 3 PM MDT | 69°F | 16 mph SW (225°) | 31 mph | 4% | 12% | Sunny |
| Fri, 4 PM MDT | 67°F | 15 mph SW (225°) | 32 mph | 19% | 25% | Slight Chance Rain Showers |
| Fri, 5 PM MDT | 67°F | 14 mph SW (225°) | 31 mph | 18% | 35% | Slight Chance Rain Showers |
| Fri, 6 PM MDT | 63°F | 13 mph SW (225°) | 28 mph | 20% | 40% | Slight Chance Rain Showers |
| Fri, 7 PM MDT | 57°F | 14 mph SW (225°) | 29 mph | 20% | 41% | Slight Chance Rain Showers |
| Fri, 8 PM MDT | 55°F | 14 mph SW (225°) | 32 mph | 9% | 36% | Partly Cloudy |
| Fri, 9 PM MDT | 54°F | 14 mph SW (225°) | 32 mph | 3% | 26% | Partly Cloudy |
| Fri, 10 PM MDT | 52°F | 15 mph SW (225°) | 35 mph | 1% | 32% | Partly Cloudy |
| Fri, 11 PM MDT | 52°F | 15 mph SSW (203°) | 33 mph | 1% | 44% | Partly Cloudy |
| Sat, 12 AM MDT | 51°F | 15 mph SSW (203°) | 32 mph | 2% | 45% | Partly Cloudy |
| Sat, 1 AM MDT | 51°F | 12 mph SSW (203°) | 27 mph | 2% | 42% | Partly Cloudy |
| Sat, 2 AM MDT | 50°F | 13 mph SSW (203°) | 27 mph | 2% | 43% | Partly Cloudy |
| Sat, 3 AM MDT | 49°F | 12 mph SSW (203°) | 27 mph | 2% | 43% | Partly Cloudy |
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 9, 2026 | Friday October 9, 2026 | Friday Night October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 41° | 69° | 45° | 55° | 42° | 51° | 41° | 52° | 37° | 49° | 35° | 46° | 32° | 46° |
| Wind | SW 7 mph | SSW 7 to 16 mph | SW 10 to 15 mph | SSW 5 to 9 mph | SSE 6 mph | SSE 2 to 6 mph | SE 2 to 7 mph | SSW 6 mph | S 3 mph | SSW 0 to 3 mph | WNW 5 mph | W 2 to 6 mph | WSW 6 mph | NW 1 to 5 mph |
| Gusts | 10 mph | 32 mph | 35 mph | 25 mph | 15 mph | 15 mph | 17 mph | 15 mph | 10 mph | 9 mph | 12 mph | 13 mph | 14 mph | 10 mph |
| Precip % | 0% | 19% | 20% | 89% | 98% | 100% | 99% | 92% | 72% | 64% | 68% | 52% | 59% | 31% |
| Forecast |
Nearby river temperature: 55.9°F at SNAKE RIVER NEAR MORAN, WY (11.9 mi away) · Oct 9, 8:45 AM UTC
Good for fishing (82/100), from 5 available inputs. Supporting this: Wind 6 mph from the south-southwest. 0% chance of precipitation. 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.
Good for boating (84/100), from 4 available inputs. Supporting this: Wind 6 mph from the south-southwest. Gusts to 10 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.
Good for sailing (77/100), from 4 available inputs. Supporting this: Wind 6 mph from the SSW is workable but not ideal. Gusts are within 4 mph of sustained wind, so the breeze is steady. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Good for kayaking (83/100), from 5 available inputs. Supporting this: Wind 6 mph from the south-southwest. Gusts to 10 mph. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of WY Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Jenny Lake in WY is a dynamic freshwater lake offering visitors a balanced blend of public recreation and tranquil natural scenery. The waterbody is frequented by fishermen targeting warmwater and coolwater species, as well as canoe and kayak paddlers. Confirm on-water safety requirements and personal flotation device regulations before launch.
Valid freshwater sport fishing license issued by Wyoming Game and Fish Department (WGFD) is required for anglers age 14+. Digital license on mobile is accepted.
Mandatory Clean, Drain & Dry inspection. Out-of-area craft require on-site Aquatic Invasive Species (AIS Quagga/Zebra) inspection or decontamination before launch. USCG life jackets required for all.
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 Mountain Whitefish, Mackinaw (Lake Trout), Rainbow Trout, Brown Trout. 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.
High-altitude mountain winter climate (elevation 6,783 ft MSL). Freezing temperatures, potential snowpack or ice cover, and reduced seasonal amenities. Winter safety caution advised.
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 Jenny Lake 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 9, 3:46 AM MDT