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NZUS99 KBOI 281552
TXTSFD
IDAHO STATE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
952 AM MDT TUE APR 28 2026
UNSETTLED WEATHER CONTINUES THROUGH MID-WEEK AS A COOL UPPER-LEVEL TROUGH
REMAINS OVER THE REGION. SCATTERED RAIN AND SNOW SHOWERS, ALONG WITH A FEW
AFTERNOON THUNDERSTORMS, WILL IMPACT THE CENTRAL MOUNTAINS AND EASTERN IDAHO
THROUGH WEDNESDAY. FROST AND FREEZING TEMPERATURES ARE EXPECTED ACROSS MANY
VALLEYS OF CENTRAL AND EASTERN IDAHO FOR THE NEXT TWO MORNINGS, WHICH MAY
IMPACT SENSITIVE VEGETATION. A SIGNIFICANT WARMING AND DRYING TREND BEGINS
THURSDAY AND CONTINUES THROUGH FRIDAY AS HIGH PRESSURE BUILDS ACROSS THE STATE.
BY THE WEEKEND, TEMPERATURES WILL RISE 10 TO 15 DEGREES ABOVE SEASONAL NORMALS,
WITH LOWER VALLEYS IN SOUTHERN IDAHO POTENTIALLY REACHING THE UPPER 70S TO LOW
80S. CONFIDENCE DECREASES FOR THE SECOND HALF OF THE WEEKEND AS A NEW SYSTEM
POTENTIALLY BRINGS A RETURN OF SHOWERS AND THUNDERSTORMS, PRIMARILY TO SOUTHERN
AND CENTRAL IDAHO. NO SIGNIFICANT RIVER FLOODING IS EXPECTED, THOUGH MINOR
RISES ARE POSSIBLE IN SMALL STREAMS DURING MID-WEEK PRECIPITATION. BEYOND THE
7-DAY PERIOD, OUTLOOKS FAVOR A TRANSITION BACK TOWARD COOLER AND WETTER
CONDITIONS FOR MUCH OF THE STATE.
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