Today
Wednesday, Aug 19
7.7/10
Partial
Mostly Sunny
86°59°
Wind5 mph WSWRain6%Clouds30%Moon40%
Utah · River fishing forecast
Green River near Greendale fishing forecast today
Current conditions plus a 7-day fishing outlook for Green River near Greendale, including Fishing Score, wind, pressure, clouds, rain chance and moon phase, with live USGS water observations, recent trends and long-term seasonal context where available.
7.1/10
Fair
Current Fishing Score
Weather-based index with a conservative -0.2 USGS river-flow adjustment from the long-term seasonal baseline.
72% weather data coveragePartial · pressure missingUSGS flow adjustment -0.2
Air temperature
66°F
Wind
2 mph E
Pressure
Unavailable
Not supplied by NWS; Fishing Score is partial
Cloud cover
23%
Rain chance
5%
Moon
Waxing Crescent
Water temp
51.1°F
USGS observation
Gusts
5 mph
Humidity
55%
Weather data updated: Aug 19, 2026, 7:07 AM MDT
Live water data
Green River near Greendale water temperature and USGS river conditions
Current observations with 24-hour, 7-day, recent 30-day and long-term seasonal context from the verified reference station.
Green River Near Greendale, UTUSGS-09234500 · about 0.0 mi from forecast point
Water temperature51.1°FUSGS 00010
24hSteady0.0°F7 daysCooling-9.4°F30-day contextBelow 30-day median59.6°F medianSeasonal baselineCooler than seasonal median55.3°F median · 36 years
Streamflow2,290 cfsUSGS 00060
24hStable+1%7 daysFalling-18%30-day contextAbove 30-day median1,930 cfs medianSeasonal baselineAbove seasonal median1,660 cfs median · 75 years
Gage height9.75 ftUSGS 00065
24hStable+0.02 ft7 daysFalling-0.43 ft
Fishing Score water checkCurrent score adjustment: -0.2. flow is more than 30% from the seasonal median.
Latest supported observation: Aug 19, 7:30 AM MDTSeasonal baseline uses approved USGS day-of-year statistics; 30-day context remains a separate recent median. On river pages with at least 20 approved observations contributing to the same-calendar-day streamflow baseline, unusually extreme or rapidly changing flow can only reduce the current score; it never adds bonus points.
Plan the week
Green River near Greendale 7-day fishing forecast
Compare day-level Fishing Scores with wind, rain risk, pressure and temperatures for the next seven days.
Forecast data coverageDaily weather-score coverage is 72%. NWS forecast pressure is unavailable for these periods, so the daily scores are partial.
Best available weather score · partialFriday, Aug 21 · 8.1/10
Thu
Thursday, Aug 20
7.6/10
Partial
Mostly Sunny then Slight Chance Showers And Thunderstorms
88°61°
Wind3 mph WSWRain12%Clouds39%Moon50%
Fri
Friday, Aug 21
8.1/10
Partial
Mostly Sunny
91°63°
Wind4 mph SWRain13%Clouds45%Moon61%
Sat
Saturday, Aug 22
7.4/10
Partial
Mostly Cloudy then Showers And Thunderstorms Likely
85°58°
Wind5 mph WSWRain62%Clouds73%Moon71%
Sun
Sunday, Aug 23
7.1/10
Partial
Partly Sunny then Showers And Thunderstorms
81°56°
Wind5 mph SWRain78%Clouds70%Moon80%
Mon
Monday, Aug 24
7.1/10
Partial
Partly Sunny then Showers And Thunderstorms Likely
80°56°
Wind4 mph SWRain58%Clouds64%Moon88%
Tue
Tuesday, Aug 25
7.7/10
Partial
Chance Showers And Thunderstorms
80°55°
Wind4 mph SWRain52%Clouds58%Moon94%
The large Current Fishing Score above uses current conditions and, on eligible river pages, can include a conservative USGS streamflow penalty. The seven daily cards remain weather-only because this site does not predict future river flow. Cards marked “Partial” use less than 90% of the weighted weather inputs.
Green River near Greendale fishing conditions overview
The current weather inputs produce a good weather-based Fishing Score. Very light wind may leave clear, calm water more demanding. A conservative USGS river-flow check reduces the displayed current score by 0.2 points because flow is more than 30% from the seasonal median.
Estimated activity windows: 5:48 AM–8:03 AM and 6:42 PM–8:57 PM local time. These are dawn/dusk windows, not guaranteed bite times.
Best fishing time today: estimated windows
The first estimated window runs from 5:48 AM–8:03 AM, around sunrise at 6:33 AM. The second runs from 6:42 PM–8:57 PM, around sunset at 8:12 PM. Lower light can change visibility and fish positioning, but actual feeding periods vary by species, season and water conditions.
Green River near Greendale fishing: structure, seasons and local conditions
Cold tailwater below Flaming Gorge Dam with clear runs, deep pools and a nationally known trout fishery. The forecast becomes more useful when it is read through pools, runs and current seams, together with deeper structure and pronounced depth changes, where depth, current or wind exposure can differ within the same location. Green River near Greendale has tailwater influence. Dam releases can change current speed, depth and water temperature independently of local air weather, which is why fresh flow data deserves more weight than a generic seasonal assumption.
In Utah, spring warming, runoff or reservoir-level change can create fast transitions, while summer usually increases the importance of cooler water, depth and low-light periods. Fall cooling can reopen shallower habitat. For Rainbow trout and Brown trout, the exact timing is better judged from current weather and measured water conditions than from a fixed calendar date. For a river trip, compare the forecast with pools, runs and current seams, together with deeper structure and pronounced depth changes. A rising or falling river can move the best-looking water even when the air weather remains favorable.
Common targets at Green River near Greendale include Rainbow trout, Brown trout, and Cutthroat trout. They do not use depth, current and cover in exactly the same way, so the Fishing Score remains a conditions index rather than a species-specific bite prediction. This page also has a manually mapped USGS reference station, so fresh water temperature, flow or level can be shown when that station reports a supported sensor.
What to watch in today's conditions
Wind
Current wind is about 2 mph from E, with gusts near 5 mph. Crosswind and gusts can change boat control and presentation, while bends and protected banks may remain much calmer.
Barometric pressure
Current NWS pressure is missing, so pressure is excluded from this update and the Fishing Score is visibly marked as partial.
Moon phase and light
The moon is currently in the Waxing Crescent phase with approximately 38% illumination. Lunar illumination has a smaller weight than the main weather factors.
Target species
Rainbow troutBrown troutCutthroat trout
Always verify current state fishing regulations, seasons, bag limits, licensing requirements and location-specific closures before fishing.
How this forecast is calculated
The Fishing Score starts with National Weather Service weather data: pressure 28%, wind 24%, cloud cover 18%, precipitation probability 18% and lunar illumination 12%. Missing weather factors are never treated as zero; partial weather results are pulled toward a neutral 5/10 according to the missing weight. On eligible river pages, a separate conservative USGS flow check can only reduce the current score when streamflow is unusually far from the long-term seasonal median or changing rapidly. It never increases the score.
Quick answers
Green River near Greendale fishing forecast FAQ
What is the Fishing Score for Green River near Greendale today?
The current Fishing Score is 7.1 out of 10 with 72% weighted data coverage. The score is partial and is pulled toward neutral conditions rather than assuming missing inputs are favorable.
What is the best fishing time at Green River near Greendale today?
The page highlights estimated low-light windows of 5:48 AM–8:03 AM and 6:42 PM–8:57 PM local time, centered around sunrise and sunset. They are planning windows, not guaranteed bite times.
What fish are commonly targeted at Green River near Greendale?
Common target species listed for Green River near Greendale include Rainbow trout, Brown trout, Cutthroat trout. Seasons, legal limits and local closures can change, so always verify current regulations before fishing.
What weather factors are used for Green River near Greendale?
The Fishing Score uses barometric pressure and trend, wind, cloud cover, precipitation probability and moon illumination. Missing inputs are excluded rather than treated as zero.
Does this page include USGS water conditions for Green River near Greendale?
Yes. This page uses the manually mapped Green River Near Greendale, UT reference station when fresh supported observations are available. Water temperature, streamflow or water level can appear depending on the station sensors. When approved long-term statistics are available, the page can compare the current reading with the seasonal median for the same calendar day. On river pages with at least 20 approved observations contributing to that calendar day, unusually extreme or rapidly changing flow may conservatively reduce the Fishing Score; water data never adds bonus points.
What is the water temperature at Green River near Greendale?
The latest supported USGS water-temperature observation shown on this page is 51.1°F from Green River Near Greendale, UT. Readings older than 48 hours are not presented as current.