Divide Creek Rapids, Idaho Weather Forecast Discussion

600
FXUS65 KMSO 231852
AFDMSO
Area Forecast Discussion
National Weather Service Missoula MT
1252 PM MDT Tue Sep 23 2025
.DISCUSSION...
KEY MESSAGES:
- Warm and Dry Through Thursday
- Cooler and Breezy to end the week
- High Uncertainty Early Next Week: Wide range of possibilities,
  from a return to warm and dry conditions to a cooler, wetter
  pattern.
A stretch of warm and dry early autumn weather will continue
through the middle of the week, dominated by a ridge of high
pressure. A passing weather system will bring some minor changes
for the weekend, but significant impacts currently look unlikely.
For the short-term, expect another cool morning with frost again
possible in the same spots as this morning, followed by pleasant
and tranquil weather to continue through Thursday. Sunny skies
will allow high temperatures to climb into upper 70s to low 80s
across the valleys, which is 10 to 15 degrees above normal for
this time of year.
A shift in the pattern begins late in the day on Thursday as a
Pacific trough approaches the region. This will increase winds
from the west by Friday afternoon. The trough will move through
the region Thursday night into Friday, bringing in a cooler
airmass. While temperatures will drop from their mid- week highs,
they are still expected to remain above average for the weekend.
Moisture associated with this system appears quite limited. At
this time, showers are not in the forecast.
Looking ahead to early next week, forecast uncertainty becomes
very high. There is significant disagreement among weather models
for the Monday-Tuesday timeframe. Some models keep our region in a
dry and unseasonably warm pattern. In contrast, other models,
particularly some AI-driven guidance, suggest a much cooler and
wetter solution. For now, the official forecast leans toward the
drier, warmer trend, but this could change significantly in the
coming days.
&&
.AVIATION...VFR conditions will prevail through Thursday under
clear skies with light, terrain-driven winds. Wednesday morning
will be another cool morning in the valleys with patchy frost and
patchy fog.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&
$$

NWS MSO Office Area Forecast Discussion