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Southern Idaho Weather Forecast

Published: Jul. 28, 2020 at 7:55 AM MDT|Updated: Jul. 28, 2020 at 5:01 PM MDT
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CHIEF METEOROLOGIST ERIC BRILL – EVENING UPDATE

Tuesday, July 28, 2020

Above average temperatures are going to be the big story around Southern Idaho for the rest of July and beginning of August. The disturbance that brought the rain showers and thunderstorms to the area is going to move itself mainly out of the region late Tuesday night. Some isolated showers and thunderstorms are going to hang around the higher elevation locations for Wednesday, but the vast majority of Southern Idaho is expected to stay dry. Developing sunshine is expected as well, and that will result in temperatures starting to climb, and that begins on Wednesday.

As a ridge, or an area of high pressure, starts to develop over Southern Idaho, temperatures are going to be climbing quite a bit. For the Magic Valley and Mini-Cassia Region, this means that middle to upper 90s and even some triple digit numbers are in the forecast for Thursday through Monday. For the Wood River Valley, temperatures are expected to top-off in the lower 90s for those five given days as well. This means that all of Southern Idaho is expected to be 5-10° above average from Thursday through Monday. I don’t expect any new records for the majority of Southern Idaho during this heat wave, BUT, we are going to be within a few degrees of a few records, so it isn’t impossible for that to happen.

Mostly sunny to sunny skies are expected for late in the week, and into the weekend as well as Monday. This means that the threat of showers and storms is going to be rather low (if not, non-existent) after Wednesday comes to a completion. Next Tuesday does look to be not quite as warm, as it appears a cold front is expected to move through the region. This looks to knock temps down to near average values (meaning within +/-5° of average). It is worthwhile to note as well that Tuesday is the last day that the average high and low is 91°/59° within Twin Falls. Average temperatures will be starting to go downhill from there, but it doesn’t mean that hot conditions still can’t happen!! Stay cool over the next week, folks! We are going to see the hottest temperatures we’ve seen in a little bit! Make sure to drink plenty of water, and take it slow out there! Try to avoid any hard working outdoor activities from about 2 PM until 8 PM, which is the heat of the day!

‘<a href=“http://www.kmvt.com/weather/alerts/” target=“_blank”><b> For the latest on all warnings and advisories in Southern Idaho click here… </b></a>

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TUESDAY NIGHT (July 28, 2020)

MAGIC VALLEY: Slight chance of a rain shower and/or a thunderstorm before midnight, followed by mostly clear skies. Low: 59. Winds: Southeast 5-10 mph.

WOOD RIVER VALLEY: After a chance of rain showers and thunderstorms before midnight, decreasing clouds through the overnight hours. Low: 54. Winds: North 3-8 mph.

WEDESDAY (July 29th)

MAGIC VALLEY: Mostly sunny skies and warmer. High: 93. Winds: East to Northwest 5-10 mph.

WOOD RIVER VALLEY: Mostly sunny skies with some isolated rain showers and thunderstorms, generally during the afternoon and evening. High: 87. Winds: South to West 5-10 mph.

WEDNESDAY NIGHT:

MAGIC VALLEY: Clear skies. Low: 63. Winds: East 5-15 mph.

WOOD RIVER VALLEY: Clear skies. Low: 57. Winds: North 5-10 mph.

THURSDAY (July 30th)

MAGIC VALLEY: Mostly sunny skies and hot. High: 99. Low: 66.

WOOD RIVER VALLEY: Mostly sunny skies. High: 90. Low: 60.

FRIDAY (July 31st)

MAGIC VALLEY: Mostly sunny skies, hot and a little bit breezy. High: 100. Low: 68.

WOOD RIVER VALLEY: Mostly sunny skies and hot. High: 93. Low: 61.

SATURDAY (August 1st)

MAGIC VALLEY: Mostly sunny skies and hot. High: 96. Low: 65.

WOOD RIVER VALLEY: Mostly sunny skies and hot. High: 91. Low: 58.

SUNDAY (August 2nd)

MAGIC VALLEY: Mostly sunny skies and hot. High: 96. Low: 64.

WOOD RIVER VALLEY: Mostly sunny skies and hot. High: 91. Low: 58.

MONDAY (August 3rd)

MAGIC VALLEY: Mainly sunny skies, hot and a little bit breezy. High: 94. Low: 62.

WOOD RIVER VALLEY: Mainly sunny skies. High: 90. Low: 55.

TUESDAY (August 4th)

MAGIC VALLEY: Mostly sunny skies and not quite as warm. High: 87.

WOOD RIVER VALLEY: Mostly sunny skies with not as warm of temperatures. High: 85.

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