Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 052020

Area Forecast Discussion
National Weather Service Missoula MT
220 PM MDT MON OCT 5 2015

.DISCUSSION...Pleasant early fall conditions will persist this week
as a ridge of high pressure maintains dominance across the region.
Morning lows will be cold yet again tonight with many locations
running in the 20s and 30s. But steady, slow warming is
anticipated the next few days with morning temperatures typically in
the 30s and 40s by mid week. Meanwhile high temperatures should
have no trouble reaching the 60s across the higher and lower
terrain of western Montana and central Idaho, with many area
valleys getting into the 70s! Clouds will largely be absent in
the overly dry atmosphere until the passage of a weak atmospheric
disturbance Wednesday night. The increase in clouds and moisture
will help raise overnight low temperatures and temper afternoon
high`s Thursday while also bringing a chance for some light rain
showers or sprinkles. But overall little to no significant impact
to daily activities are expected this week.

A ridge of high pressure slides overhead Friday into the first
half of the weekend, leading to warm and relatively dry
conditions. Temperatures are expected to range from 10 to 15
degrees above normal, with mid to upper 70s for many valley
locations. Winds will be on the increase Saturday, but otherwise
pleasant fall weather will prevail.

Forecast models continue to trend toward wetter, cooler, and
breezy conditions late Saturday through early next week. Although,
models have some differences with the placement/movement of
various weather producing features from Sunday onward, there is
increasing confidence in how the basic pattern will likely evolve.
Those with outdoor interests should keep up with the latest
forecast, as a change to more unsettled weather is likely.


.AVIATION...High pressure will continue to move into north central
Idaho and western Montana today. Model cross sections show that
winds should be fairly light through today with mostly clear
skies. Valley temperatures will again become fairly cold tonight
as valley inversions develop.



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