Montana · River fishing forecast

Yellowstone River at Billings fishing forecast today

Current conditions plus a 7-day fishing outlook for Yellowstone River at Billings, 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.

8.6/10
Excellent
Current Fishing Score

Weather-based index with a long-term USGS river-flow check. Current water adjustment: 0.0.

100% weather data coverageFull inputsUSGS flow adjustment 0.0
Air temperature
63°F
Wind
14 mph WSW
Pressure
30.05 inHg
Nearby NWS observation
Cloud cover
39%
Rain chance
0%
Moon
Waxing Crescent
Water temp
66.7°F
USGS observation
Gusts
22 mph
Humidity
62%
Weather data updated: Aug 19, 2026, 4:22 AM MDT
Live water data

Yellowstone River at Billings 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.

Open USGS station ↗
Yellowstone River at Billings MTUSGS-06214500 · about 0.0 mi from forecast point
Water temperature66.7°FUSGS 00010
Streamflow2,980 cfsUSGS 00060
Gage height2.87 ftUSGS 00065
Fishing Score water checkCurrent streamflow is about 29% from the long-term seasonal median based on 98 approved same-day observations. No score penalty applied.
Latest supported observation: Aug 19, 8:00 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

Yellowstone River at Billings 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 · partialSunday, Aug 23 · 8.1/10
Today
Wednesday, Aug 19
7.7/10
Partial
Sunny
90°59°
Wind9 mph NWRain1%Clouds15%Moon40%
Thu
Thursday, Aug 20
7.7/10
Partial
Patchy Smoke
95°63°
Wind5 mph WRain1%Clouds18%Moon50%
Fri
Friday, Aug 21
7.7/10
Partial
Mostly Sunny
92°65°
Wind8 mph NNWRain2%Clouds33%Moon61%
Sat
Saturday, Aug 22
7.7/10
Partial
Partly Sunny then Slight Chance Rain Showers
91°63°
Wind5 mph NNERain31%Clouds62%Moon71%
Sun
Sunday, Aug 23
8.1/10
Partial
Mostly Sunny then Slight Chance Rain Showers
93°61°
Wind9 mph WRain19%Clouds45%Moon80%
Mon
Monday, Aug 24
7.9/10
Partial
Mostly Sunny
89°62°
Wind6 mph WRain12%Clouds31%Moon88%
Tue
Tuesday, Aug 25
8.0/10
Partial
Mostly Sunny
91°61°
Wind7 mph SRain26%Clouds48%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.

Yellowstone River at Billings fishing conditions overview

The current weather inputs produce a excellent weather-based Fishing Score. Local fish activity can still vary by species, depth, water temperature and recent weather.

Estimated activity windows: 5:35 AM–7:50 AM and 6:47 PM–9:02 PM local time. These are dawn/dusk windows, not guaranteed bite times.

Best fishing time today: estimated windows

The first estimated window runs from 5:35 AM–7:50 AM, around sunrise at 6:20 AM. The second runs from 6:47 PM–9:02 PM, around sunset at 8:17 PM. Lower light can change visibility and fish positioning, but actual feeding periods vary by species, season and water conditions.

Yellowstone River at Billings fishing: structure, seasons and local conditions

Broad Yellowstone River reach with gravel bars, current seams and warmwater structure around Billings. That physical setting is the starting point for reading today's forecast, because current seams and slower-water edges can react differently to wind, light and changing water conditions. Current is a defining feature on this reach. Faster seams, softer edges and deeper runs can offer very different holding water, so a single discharge number should be interpreted through the structure visible at the spot you fish.

In Montana, 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 Smallmouth bass and Channel catfish, the exact timing is better judged from current weather and measured water conditions than from a fixed calendar date. Use the forecast to decide when wind, rain and cloud cover are manageable, then judge current seams and slower-water edges against the actual flow at the access point.

Common targets at Yellowstone River at Billings include Smallmouth bass, Channel catfish, and Sauger. 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 14 mph from WSW, with gusts near 22 mph. Crosswind and gusts can change boat control and presentation, while bends and protected banks may remain much calmer.

Barometric pressure

Barometric pressure is about 30.05 inHg. Pressure is one part of the Fishing Score and is read together with wind, cloud cover and precipitation.

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

Smallmouth bassChannel catfishSauger

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

Yellowstone River at Billings fishing forecast FAQ

What is the Fishing Score for Yellowstone River at Billings today?

The current Fishing Score is 8.6 out of 10 with 100% weighted data coverage. The weather inputs used by the score are currently complete.

What is the best fishing time at Yellowstone River at Billings today?

The page highlights estimated low-light windows of 5:35 AM–7:50 AM and 6:47 PM–9:02 PM local time, centered around sunrise and sunset. They are planning windows, not guaranteed bite times.

What fish are commonly targeted at Yellowstone River at Billings?

Common target species listed for Yellowstone River at Billings include Smallmouth bass, Channel catfish, Sauger. Seasons, legal limits and local closures can change, so always verify current regulations before fishing.

What weather factors are used for Yellowstone River at Billings?

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 Yellowstone River at Billings?

Yes. This page uses the manually mapped Yellowstone River at Billings MT 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 Yellowstone River at Billings?

The latest supported USGS water-temperature observation shown on this page is 66.7°F from Yellowstone River at Billings MT. Readings older than 48 hours are not presented as current.