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
- Breezy Winds today with Lake Wind Advisory: Gusty northeast winds in place which has resulted in the issuance of a Lake Wind Advisory for American Falls Reservoir.
- Northerly flow will usher in much cooler air, with Freeze Warnings and Frost Advisories in effect for parts of eastern Idaho early Wednesday morning.
- Warming Trend Returns: High pressure will build late this week and into the weekend, returning temperatures to above- normal levels.
DISCUSSION
Issued at 222 AM MDT Tue May 5 2026
A cold front has moved through southern Idaho overnight and expect much cooler conditions today with high temperatures in the 40s and 50s mountains and 60s in lower elevations. Breezy to windy northerly and northeasterly winds with gusts 20 to 30 mph will also be present and a Lake Wind Advisory is in effect for the American Falls Reservoir. The other main impact will be the potential for sub freezing overnight lows tonight and frost advisories or freeze warnings are in effect for the Snake River Plain and Eastern Magic Valley early Wednesday morning. It will remain cool Wednesday but then another significant warming trend begins on Thursday with high temperatures back into the 70s in lower elevations. Above normal temperatures are expected through early next week with a slight cool down Saturday but then lower elevation highs in the 80s by Monday into next Tuesday.
Will have some showers this morning and afternoon especially near the Utah border, but then mainly dry conditions with a slightly better chance for showers again on Saturday with a weak upper level system.
AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/
Issued at 537 AM MDT Tue May 5 2026
Main impacts will be northeast winds 10 to 20 knots at IDA, PIH and BYI with gusts 20 to 30 knots. Kept all morning ceilings above 5 thousand feet and VFR conditions. Skies will clear overnight with winds weakening after 06Z.
PIH WATCHES/WARNINGS/ADVISORIES
Frost Advisory from 3 AM to 9 AM MDT Wednesday for IDZ051-055. Freeze Warning from 3 AM to 9 AM MDT Wednesday for IDZ052>054.
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