Marine Weather and Tide Forecast for Turtle Lake, MT
 | Sunrise 6:09 AM Sunset 9:17 PM Moonrise 8:35 PM Moonset 4:59 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
7 Day Forecast for Marine Location Near Turtle Lake, MT
NEW! Add second zone forecast
FXUS65 KMSO 290837 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 237 AM MDT Wed Jul 29 2026
DISCUSSION
KEY MESSAGES:
- Hot, dry, and smoky conditions continue with the persistent weather pattern through Saturday.
- Dry thunderstorm potential: Thursday afternoon through Friday morning across southwest and west-central Montana.
- Elevated winds and fire weather: Saturday and Sunday region- wide.
Air quality remains the biggest impact in the short term as the Northern Rockies is still in a dry and hot southwesterly flow.
This pattern will continue through Friday, then on Saturday a stationary Pacific trough is expected to move onshore and squash the high pressure ridge that has dominated our weather.
Historically, ridge breakdown after a period of hot and dry weather can lead to elevated fire weather concerns.
Thursday a short wave ejecting off the Pacific low pressure will interact with a favorable atmosphere: strong mid-level lapse rates and weak to moderate shear. The atmosphere is very dry and models are not excited about thunderstorms, that said this particular setup has in the past produced strong dry thunderstorms.
The main threats would be dry lightning and strong outflow wind gusts. The most favorable atmospheric setup is south and east of the Missoula Valley especially along the Continental Divide.
As the Pacific trough pushes through the region winds will increase Saturday. The strongest winds will happen post dry cold front overnight Saturday into Sunday. Expect widespread westerly winds sustaining 10-25 mph with gusts of 25 to 40 mph across the region. This wind/ heat/ and low RH combination will significantly elevate fire weather concerns and create hazardous, choppy conditions on lakes and waterways. This system will remain mostly dry with no significant or notable precipitation expected, but temperatures will drop 10-20 degrees behind the front for Sunday and Monday bringing temperatures back to near and just below normal for this time of year.
AVIATION
Wildfire smoke remains a persistent impact to the regional airspace. Slant-range and surface visibilities continue to bottom out near 5SM at times, especially pronounced during the late afternoon through sunset as optical depth increases and the day's fresh smoke arrives from fires burning in Oregon and southwestern Idaho. Anticipate continued mountain obscurations.
Ridgetop winds will remain out of the west and southwest at 10-20 knots through the forecast period. Hot temperatures will continue to increase density altitudes through Saturday impacting aircraft performance particularly at higher elevation terminals and airfields as temperatures continue to creep into the mid and upper 90s each day.
Note: AMD NOT SKED for KGPI due to missing METARs during runway maintenance.
MSO WATCHES/WARNINGS/ADVISORIES
MT...None.
ID...None.
Area Forecast Discussion National Weather Service Missoula MT 237 AM MDT Wed Jul 29 2026
DISCUSSION
KEY MESSAGES:
- Hot, dry, and smoky conditions continue with the persistent weather pattern through Saturday.
- Dry thunderstorm potential: Thursday afternoon through Friday morning across southwest and west-central Montana.
- Elevated winds and fire weather: Saturday and Sunday region- wide.
Air quality remains the biggest impact in the short term as the Northern Rockies is still in a dry and hot southwesterly flow.
This pattern will continue through Friday, then on Saturday a stationary Pacific trough is expected to move onshore and squash the high pressure ridge that has dominated our weather.
Historically, ridge breakdown after a period of hot and dry weather can lead to elevated fire weather concerns.
Thursday a short wave ejecting off the Pacific low pressure will interact with a favorable atmosphere: strong mid-level lapse rates and weak to moderate shear. The atmosphere is very dry and models are not excited about thunderstorms, that said this particular setup has in the past produced strong dry thunderstorms.
The main threats would be dry lightning and strong outflow wind gusts. The most favorable atmospheric setup is south and east of the Missoula Valley especially along the Continental Divide.
As the Pacific trough pushes through the region winds will increase Saturday. The strongest winds will happen post dry cold front overnight Saturday into Sunday. Expect widespread westerly winds sustaining 10-25 mph with gusts of 25 to 40 mph across the region. This wind/ heat/ and low RH combination will significantly elevate fire weather concerns and create hazardous, choppy conditions on lakes and waterways. This system will remain mostly dry with no significant or notable precipitation expected, but temperatures will drop 10-20 degrees behind the front for Sunday and Monday bringing temperatures back to near and just below normal for this time of year.
AVIATION
Wildfire smoke remains a persistent impact to the regional airspace. Slant-range and surface visibilities continue to bottom out near 5SM at times, especially pronounced during the late afternoon through sunset as optical depth increases and the day's fresh smoke arrives from fires burning in Oregon and southwestern Idaho. Anticipate continued mountain obscurations.
Ridgetop winds will remain out of the west and southwest at 10-20 knots through the forecast period. Hot temperatures will continue to increase density altitudes through Saturday impacting aircraft performance particularly at higher elevation terminals and airfields as temperatures continue to creep into the mid and upper 90s each day.
Note: AMD NOT SKED for KGPI due to missing METARs during runway maintenance.
MSO WATCHES/WARNINGS/ADVISORIES
MT...None.
ID...None.
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
Link to 5 hour of 5 minute data for KGPI
Terminal Aerodrome Forecast (TAF) for KGPI
Wind History Graph: GPI
(wind in knots)
GEOS Local Image of Pacific Northwest
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