Marine Weather and Tide Forecast for Lakeside, MT
 | Sunrise 5:55 AM Sunset 9:12 PM Moonrise 11:54 PM Moonset 6:18 AM |
7 Day Forecast for Marine Location Near Lakeside, MT
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FXUS65 KMSO 152059 CCA AFDMSO
Area Forecast Discussion...CORRECTED National Weather Service Missoula MT 259 PM MDT Thu May 15 2025
DISCUSSION
KEY MESSAGES:
- Friday morning valley fog, followed by showers.
- Mild/dry start Saturday morning then increasing showers.
- A very wet Sunday with cold/wet backcountry conditions and mountain pass snow.
Showers will linger into this evening before tapering off overnight. Valleys that receive late-day rain and partial clearing may see patchy fog Friday morning. However, the next round of showers and increased cloud cover will quickly arrive Friday morning, with precipitation chances increasing through the day.
Model guidance continues to support a cool and wet Sunday as a low pressure system tracks through north-central Idaho and western Montana. Snow levels are now forecast to drop to 4,500–5,500 feet, making slushy accumulations increasingly likely across higher terrain and mountain passes. Expected valley rain (25th–75th percentile) totals have increased to:
- 0.30 to 0.80 inch for north-central Idaho and Lemhi County - 0.20 to 0.60 inch for western Montana
Slushy snow and lowered visibility may lead to slow travel over passes including Lost Trail, Williams Creek Summit, Bannock, Lemhi, Nez Perce, and Gilmore.
Patchy fog is possible again Monday morning, with lingering clouds through the day. A gradual warming trend is expected next week, though unsettled conditions may persist through Tuesday. By mid to late week, a southwest flow pattern brings milder temperatures and potential for spring thunderstorms. An upper ridge is forecast to build next weekend, with the NBM showing a 50–75% chance of highs returning to the 80s.
AVIATION
Showers taper off overnight, but areas of MVFR to IFR due to patchy valley fog are possible Friday morning, especially where skies partially clear. Expect showers to redevelop in the Camas Prairie, Idaho by daybreak and mid- morning in western Montana, with obscured terrain and occasional MVFR ceilings into the afternoon.
MSO WATCHES/WARNINGS/ADVISORIES
MT...None.
ID...None.
Area Forecast Discussion...CORRECTED National Weather Service Missoula MT 259 PM MDT Thu May 15 2025
DISCUSSION
KEY MESSAGES:
- Friday morning valley fog, followed by showers.
- Mild/dry start Saturday morning then increasing showers.
- A very wet Sunday with cold/wet backcountry conditions and mountain pass snow.
Showers will linger into this evening before tapering off overnight. Valleys that receive late-day rain and partial clearing may see patchy fog Friday morning. However, the next round of showers and increased cloud cover will quickly arrive Friday morning, with precipitation chances increasing through the day.
Model guidance continues to support a cool and wet Sunday as a low pressure system tracks through north-central Idaho and western Montana. Snow levels are now forecast to drop to 4,500–5,500 feet, making slushy accumulations increasingly likely across higher terrain and mountain passes. Expected valley rain (25th–75th percentile) totals have increased to:
- 0.30 to 0.80 inch for north-central Idaho and Lemhi County - 0.20 to 0.60 inch for western Montana
Slushy snow and lowered visibility may lead to slow travel over passes including Lost Trail, Williams Creek Summit, Bannock, Lemhi, Nez Perce, and Gilmore.
Patchy fog is possible again Monday morning, with lingering clouds through the day. A gradual warming trend is expected next week, though unsettled conditions may persist through Tuesday. By mid to late week, a southwest flow pattern brings milder temperatures and potential for spring thunderstorms. An upper ridge is forecast to build next weekend, with the NBM showing a 50–75% chance of highs returning to the 80s.
AVIATION
Showers taper off overnight, but areas of MVFR to IFR due to patchy valley fog are possible Friday morning, especially where skies partially clear. Expect showers to redevelop in the Camas Prairie, Idaho by daybreak and mid- morning in western Montana, with obscured terrain and occasional MVFR ceilings into the afternoon.
MSO WATCHES/WARNINGS/ADVISORIES
MT...None.
ID...None.
Link to 1 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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