textproduct: Great Falls
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Warm and dry conditions persist through Friday.
- Temperatures will gradually trend cooler starting this weekend, with the cooling trend continuing into early next week.
- A more unsettled pattern is expected by the middle of next week, although a lot of uncertainty remains.
DISCUSSION
/Issued 417 AM MST Wed Nov 11 2026/ Upper-level ridging will build over the region today through Friday leading to high temperatures 15-20 degrees above average for this time of the year. By Friday the ridge starts to track eastward allowing the upper-level low currently positioned over the western CONUS to advance further east. Southerly flow aloft over the weekend will push moisture into Southwest Montana allowing for a chance of light rain along the lower elevations and light snow above 7000ft. The advancement of the trough through the weekend will allow for temperatures to gradually decrease towards seasonal averages by early next week.
Through the middle of next week, a more unsettled pattern is expected to set up with multiple low pressure systems expected to move through bringing multiple chances for mountain snow and lower elevation rain/snow. A high degree of uncertainty remains in exactly how these systems will play out, especially towards the end of next week. But the overall trend points towards a cooler and wetter pattern lasting through next weekend. -thor
AVIATION
11/18Z TAF Period
VFR conditions will prevail throughout the entire 1118/1218 TAF period; however, passing mid-level cloudiness may at times obscure ridgetops, most notably along the Continental Divide. Otherwise gusty surface winds will persist through along the immediate eastern slopes of the Rocky Mountain Front and the KGTF terminal over the next 18-24 hours. - Moldan
PRELIMINARY POINT TEMPS/POPS
GTF 67 44 66 40 / 0 0 0 0 CTB 63 40 64 33 / 0 0 0 0 HLN 60 34 57 31 / 0 0 0 0 BZN 61 32 59 31 / 0 0 0 0 WYS 51 24 55 25 / 0 0 0 0 DLN 58 32 57 31 / 0 0 0 0 HVR 67 37 64 32 / 0 0 0 0 LWT 66 42 70 41 / 0 0 0 0
TFX WATCHES/WARNINGS/ADVISORIES
None.
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