Southern Idaho Weather Forecast

Southern Idaho Forecast: Sunday night Update
Published: Mar. 16, 2021 at 8:06 AM MDT|Updated: Sep. 17, 2021 at 5:09 PM MDT
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METEOROLOGIST NICHOLAS SNIDER – EVENING UPDATE

Sunday, September 19, 2021

The National Weather Service in Pocatello has issued a Frost Advisory for northern Cassia, Minidoka, Lincoln, and southern Blaine counties until 9 AM Monday. Lows dropping into the 30s overnight will allow patchy frost to develop over the region. Be sure to cover all sensitive vegetation to avoid crop damage.

Fall is in the air in Southern Idaho. On and off showers are expected to continue throughout the afternoon Saturday. These will eventually clear out throughout the evening and overnight hours, as an area of high pressure moves in. As the clouds clear and the winds calm overnight, frost will develop over certain regions of the viewing area. Be sure to cover all sensitive crops overnight to avoid damage to them. A beautiful day is in store for Monday, with partly sunny skies likely throughout the day. This fair weather should continue throughout much of the week. Watch for patchy frost Monday night into Tuesday as well. Eventually southerly winds will return to the area, allowing temperatures to warm up into the 80s by the middle and end of the week. Watch for a little bit of smoke returning to the area on Wednesday. Saturday into Sunday, monsoonal moisture should return to the area, allowing for isolated showers and thunderstorms to develop over the south hills for the weekend.

For the latest on all warnings and advisories in Southern Idaho click here

Connect with me on social media: Facebook: Nicholas Snider Twitter: @snider_wx Instagram: @snider_wx

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SUNDAY NIGHT (September 19, 2021)

MAGIC VALLEY: Partly to mostly cloudy in the evening, clearing overnight. Patchy frost is possible. Lows in the upper 30s and lower 40s. Winds: WSW 10-15 mph.

WOOD RIVER VALLEY: Partly to mostly cloudy in the evening, clearing overnight. Patchy frost is possible. Lows in the lower and middle 30s. Winds: NNE 5-10 mph.

MONDAY (September 20th)

MAGIC VALLEY: Partly sunny and beautiful. Highs in the lower and middle 60s. Winds: W 10-15 mph.

WOOD RIVER VALLEY: Partly sunny and beautiful. Highs in the upper 40s and lower 50s. Winds: SSE 10-15 mph.

MONDAY NIGHT:

MAGIC VALLEY: Mostly clear with patchy frost. Lows in the upper 30s and lower 40s. Winds: S 5-10 mph.

WOOD RIVER VALLEY: Mostly clear with patchy frost. Lows in the lower and middle 30s. Winds: NE 5-10 mph.

TUESDAY (September 21st)

MAGIC VALLEY: Partly sunny and beautiful. Highs in the lower and middle 70s. Lows in the upper 40s and lower 50s.

WOOD RIVER VALLEY: Partly cloudy and beautiful. Highs in the middle and upper 50s. Lows in the upper 30s and lower 40s.

WEDNESDAY (September 22nd)

MAGIC VALLEY: Mostly sunny with smoke returning to the area. Highs in the middle and upper 70s. Lows in the lower and middle 50s.

WOOD RIVER VALLEY: Partly sunny with smoke returning. Highs in the middle and upper 60s. Lows in the upper 30s and lower 40s.

THURSDAY (September 23rd)

MAGIC VALLEY: Partly cloudy. Highs in the lower and middle 80s. Lows in the upper 40s and lower 50s.

WOOD RIVER VALLEY: Partly cloudy. Highs in the lower and middle 70s. Lows in the upper 30s and 40s.

FRIDAY (September 24th)

MAGIC VALLEY: Partly sunny and warm. Highs in the lower and middle 80s. Lows in the lower and middle 50s.

WOOD RIVER VALLEY: Partly cloudy and warm. Highs in the lower and middle 70s. Lows in the lower and middle 40s.

SATURDAY (September 25th)

MAGIC VALLEY: Partly cloudy with showers and thunderstorms in the South Hills. Highs in the lower and middle 80s. Lows in the upper 50s and lower 60s.

WOOD RIVER VALLEY: Partly cloudy. Highs in the muddle and upper 70s. Lows in the middle and upper 40s.

SUNDAY (September 26th)

MAGIC VALLEY: Partly cloudy with an isolated shower in the south hills. Highs in the upper 70s and lower 80s.

WOOD RIVER VALLEY: Partly cloudy. Highs in the lower and middle 70s.