Polson, Montana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

833
FXUS65 KMSO 260955
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
355 AM MDT Thu Jun 26 2025

.DISCUSSION...

KEY MESSAGES:

-  Scattered showers/isolated thunderstorms today, gusty outflow
wind potential.

- Seasonal temperatures and scattered showers for Friday into
  Saturday.

- Hot and dry conditions return for the first part of next week.

An approaching trough is causing the upper level flow to become
southwesterly today. A subtle disturbance is traversing the region
in this flow pattern which is kicking off scattered showers and
isolated thunderstorms across north central Idaho into west
central Montana this morning. The focus of the convection is
anticipated to shift to Lemhi county and southwest Montana by this
afternoon. A few of these storms could become fairly strong this
afternoon with the potential of producing gusty winds, small hail
and heavy rain.

A weak trough will be over the Northern Rockies Friday into
Saturday keeping the temperatures near seasonal along with some
scattered shower activity. Northwest Montana and along the
Continental Divide appear to have the best chance of receiving
showers, especially during the afternoon hours.

A strong ridge of high pressure builds over the region Sunday into
the first part of next week causing temperatures to warm
dramatically. Afternoon temperatures are expected to be around 15
degrees above average for this time of year.


&&

.AVIATION... Scattered showers and isolated thunderstorms will
continue to move across north central Idaho and west central
Montana this morning, mainly affecting KMSO and KHRF. The focus of
the convection will shift to the south by this afternoon with
KSMN, KHRF and KBTM having the greatest potential for being
impacted by the storm. This afternoon`s convection will have the
potential of producing gusty erratic winds, small hail and heavy
rain at the terminals.


&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

$$