National Weather Service United States Department of Commerce

Great Falls Weather Radar Will Be Offline August 11-17

Beginning August 11, the weather radar in Great Falls will be offline for approximately a week for an important upgrade. Technicians will replace the radar’s generator, fuel tanks, and accompanying components. For direct access to surrounding radar sites, please visit the following web page: https://radar.weather.gov/ Read More >

*****Experimental*****

The graphical and text forecasts on this page are experimental.  The wind and wave forecasts are derived directly from model data with no forecaster oversight.  Other elements such as chance of precipitation, sky, and temperatures are pulled from the gridded forecast issued by the Great Falls forecast office.

Please provide feedback on the usefulness of this product by clicking this link.

 
 
 
 
 
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FXUS45 KTFX 140506
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Recreation Forecast for Central MT Lakes
National Weather Service Great Falls MT
1106 PM MDT Sat Aug 13 2022

Note: The experimental wave height forecasts are representative of
the mid lake waters and downwind shores. Wave heights may be
significantly less on upwind shores.

Forecast For Canyon Ferry Reservoir

.TONIGHT...Mostly cloudy with a 40 percent chance of
thunderstorms early in the evening, then partly cloudy in the
late evening and overnight. Some thunderstorms may be severe with
damaging winds. Lows around 60 . Southeast winds around 15 mph
with gusts to around 40 mph in the evening becoming light. Waves
up to one foot.
.SUNDAY...Sunny. A 20 percent chance of showers in the afternoon.
Highs in the mid 80s. Northwest winds around 15 mph in the
morning becoming light. Waves up to one foot.
.SUNDAY NIGHT...Mostly clear. A 20 percent chance of
thunderstorms in the evening. Lows in the upper 50s. Variable
winds up to 10 mph. Waves up to one foot.

$$


Forecast For Upper and Lower Holter Reservoir

.TONIGHT...Partly cloudy. A 20 percent chance of showers early in
the evening. Lows around 60 . Northwest winds around 15 mph with
gusts to around 45 mph in the evening becoming light. Waves less
than 1 foot.
.SUNDAY...Sunny. Highs around 90 . Variable winds up to 10 mph.
Waves less than 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 50s. Variable
winds up to 10 mph. Waves less than 1 foot.

$$


Forecast For Hauser Reservoir and Lake Helena

.TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms
early in the evening. Lows in the mid 50s. East winds around
15 mph with gusts to around 50 mph in the evening becoming light.
Waves up to one foot.
.SUNDAY...Sunny. Highs around 90 . Variable winds up to 10 mph.
Waves less than 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s. Variable
winds up to 10 mph. Waves less than 1 foot.

$$

 

Click the above graphics for more information on boating safety.