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Official National Weather Service (NWS) point forecast and real-time wind conditions for Gray Reef Reservoir (Wyoming). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Red Flag Warning issued October 9 at 1:57AM MDT until October 9 at 7:00PM MDT by NWS Riverton WY
Today: High 81°F · Low 53°F
Peak gusts: 12 mph · Lake surface chop expected
Humidity: 33% · Barometer: 29.84 inHg
USGS water monitoring available for Gray Reef Reservoir.
Red Flag Warning issued October 9 at 1:57AM MDT until October 9 at 7:00PM MDT by NWS Riverton WY
Fair for boating (67/100), from 4 available inputs. Supporting this: Wind 8 mph from the west. Gusts to 16 mph. Working against it: Active severe alert: Red Flag Warning. 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.
Excellent for fishing (94/100), from 5 available inputs. Supporting this: Wind 8 mph from the west. Dawn hours (07:00 local). 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.
Fair for kayaking (69/100), from 5 available inputs. Supporting this: Wind 8 mph from the west. Gusts to 16 mph. Working against it: Active severe alert: Red Flag Warning. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: 0% chance of precipitation. Wind 8 mph from the west. Working against it: Active severe alert: Red Flag Warning. Air temperature 54°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 7 AM | 54°F | 8 mph | W | ⚡ 16 mph | 0% | Sunny |
| 8 AM | 53°F | 10 mph | W | ⚡ 20 mph | 0% | Sunny |
| 9 AM | 59°F | 12 mph | W | ⚡ 25 mph | 0% | Sunny |
| 10 AM | 65°F | 15 mph | SW | ⚡ 27 mph | 0% | Sunny |
| 11 AM | 70°F | 21 mph | SW | ⚡ 30 mph | 0% | Sunny |
| 12 PM | 75°F | 22 mph | SW | ⚡ 32 mph | 0% | Sunny |
| 1 PM | 78°F | 23 mph | SW | ⚡ 36 mph | 0% | Sunny |
| 2 PM | 79°F | 23 mph | W | ⚡ 36 mph | 0% | Sunny |
| 3 PM | 80°F | 23 mph | W | ⚡ 36 mph | 0% | Sunny |
| 4 PM | 81°F | 23 mph | W | ⚡ 36 mph | 1% | Sunny |
| 5 PM | 79°F | 22 mph | W | ⚡ 36 mph | 0% | Sunny |
| 6 PM | 77°F | 20 mph | W | ⚡ 32 mph | 0% | Mostly Clear |
| 7 PM | 74°F | 20 mph | SW | ⚡ 32 mph | 2% | Partly Cloudy |
| 8 PM | 68°F | 18 mph | SW | ⚡ 33 mph | 2% | Partly Cloudy |
| 9 PM | 66°F | 17 mph | W | ⚡ 33 mph | 1% | Partly Cloudy |
| 10 PM | 65°F | 18 mph | W | ⚡ 33 mph | 1% | Partly Cloudy |
| 11 PM | 63°F | 17 mph | SW | ⚡ 32 mph | 1% | Partly Cloudy |
| 12 AM | 62°F | 17 mph | SW | ⚡ 31 mph | 1% | Mostly Clear |
| 1 AM | 61°F | 16 mph | SW | ⚡ 29 mph | 1% | Mostly Clear |
| 2 AM | 59°F | 15 mph | W | ⚡ 29 mph | 1% | Mostly Clear |
| 3 AM | 59°F | 15 mph | W | ⚡ 28 mph | 1% | Mostly Clear |
| 4 AM | 57°F | 15 mph | SW | ⚡ 27 mph | 1% | Mostly Clear |
| 5 AM | 56°F | 14 mph | SW | ⚡ 25 mph | 1% | Mostly Clear |
| 6 AM | 54°F | 13 mph | SW | ⚡ 24 mph | 0% | Sunny |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
Sunny, with a high near 81. West southwest wind 8 to 23 mph, with gusts as high as 36 mph.
Partly cloudy. Low around 51, with temperatures rising to around 56 overnight. Southwest wind 14 to 20 mph, with gusts as high as 33 mph.
Sunny, with a high near 78. Southwest wind 13 to 26 mph, with gusts as high as 40 mph.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Southwest wind 13 to 21 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.
A chance of rain showers before 3pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 67. Southwest wind 10 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.
Showers and thunderstorms. Mostly cloudy, with a low around 42. Southeast wind 12 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.
A chance of rain showers before noon. Mostly sunny, with a high near 66. West southwest wind 14 to 22 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.
A chance of rain showers. Partly cloudy, with a low around 40. Chance of precipitation is 40%.
A chance of rain showers. Mostly sunny, with a high near 66. Chance of precipitation is 40%.
Rain showers likely. Mostly cloudy, with a low around 38.
Rain showers likely. Mostly sunny, with a high near 58.
A chance of rain showers. Partly cloudy, with a low around 35.
A chance of rain showers before 9am, then a chance of rain and snow showers. Mostly sunny, with a high near 55.
A chance of rain and snow showers. Mostly cloudy, with a low around 28.
Gray Reef Reservoir currently reports 52°F with wind velocity near 11 mph from the W. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Gray Reef Reservoir and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO RIW) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Gray Reef Reservoir without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Gray Reef Reservoir Water Level & Temperature page.
View Gray Reef Reservoir Water Level & Temperature →