textproduct: Pocatello
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
- Showers and thunderstorms dwindle Sunday and Monday before monsoon moisture returns Tuesday
- Gusty winds, locally heavy rainfall, and small hail possible with some stronger thunderstorms
- Very hot conditions Sunday and Monday. Some triple digit high temperatures are possible.
DISCUSSION
Issued at 1252 PM MDT Sat Jul 18 2026
Will have another round of showers and thunderstorms this evening mainly in the southern mountains and central mountains. AT least an isolated threat elsewhere. Upper ridge axis slides west and should limit monsoonal flow a bit Sunday and Monday. Highs mid to upper 90s lower elevations both days with some sites reaching 100. Monsoonal flow opens up again Tuesday with extensive moisture moving back into place with scattered showers and thunderstorms widespread across all of southeast and central Idaho. Temperatures will be slightly cooler mid week and will be drier Thursday into Saturday but will still have a chance of convective activity daily with temperatures near or slightly above normal.
AVIATION /00Z TAFS THROUGH 00Z MONDAY/
Issued at 453 PM MDT Sat Jul 18 2026
Lingering evening convection is the main focus tonight with BYI as the best chances of seeing a storm. The other sites could see a storm as well, but need more help such as outflow boundaries to trigger storms.
FIRE WEATHER
Issued at 149 PM MDT Sat Jul 18 2026
Showers and thunderstorms this evening across mainly 476, 475, 425, 413, 411 and parts of 410. Mainly isolated coverage with some storms gusting over 35 mph. Will dissipate after sunset with less coverage on Sunday mainly again in 413 and parts of 425 and 411. Monday will be mainly dry but monsoonal moisture returns with showers and thunderstorms returning Monday evening and especially Tuesday and Wednesday. Expect widespread scattered coverage both Tuesday and Wednesday. Will have convective activity late next week as well but not as widespread as Tuesday and Wednesday which are the best chances to receive some wetting rains. Hot conditions will remain through the forecast period with the hottest days Sunday and Monday. Many low elevations will be near 100 degrees.
PIH WATCHES/WARNINGS/ADVISORIES
None.
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