Southern Idaho Weather Forecast

CHIEF METEOROLOGIST ERIC BRILL – EVENING UPDATE - Friday, March 31, 2023

A winter weather advisory has been issued for Northern Blaine County from midnight Saturday {4/1/2023} morning through 6 AM on Sunday {4/2/2023} morning. The valley locations could add up to 8″ of snow, while the peaks of the mountains in this region could see over 15″ of snow. If your travels take you to and over Galena Summit, make sure you give yourself plenty of extra time and take it slow!

The weather around Southern Idaho to start the month of April is not going to be very nice, as an area of low pressure with a cold front attached to it will swing through the region.

This disturbance is going to increase the opportunity to see rain and snow showers to get the weekend started. I do anticipate that areas along and to the north of Highway 26 will see more frequent showers than those areas to the south, but Saturday isn’t going to be a particularly nice day. Even if you don’t see too much shower activity, breezy weather conditions are expected, as sustained winds will be in the 10-25 mph range. It is possible that some thunder and lightning could accompany that actual cold front passage, so don’t be surprised to hear some thunder and/or see some lightning.

Showers, which could be in the form of snow, will be around the Magic Valley and Mini-Cassia Region on Sunday. Temperatures for afternoon highs will be about 10° cooler than Saturday, which means that a lot of Southern Idaho won’t crack 40° to close out the weekend. The good news is that the ground is still somewhat ‘warm’, so it might be tough for the snow to really accumulate. Nonetheless, roads will likely be wet/slick for Sunday, so be sure to take it slow!

Unfortunately for the beginning of next week, there are even more showers within the forecast. Temperatures will remain well below average, so these showers will likely be in the form of wet snow. Those showers should become slightly less frequent day-by-day from Sunday through Wednesday, so at least there is that. Breezy weather conditions are also expected for Monday and Tuesday, which does mean that the weather around Southern Idaho will not be nice for the first four days of April.

If you’ve made it this far down the forecast write-up here, I have some good news for you! More sunshine, drier weather conditions and not too much of a breeze is expected on Thursday and Friday. Temperatures will also climb a few degrees between these days, and there is relatively high confidence in this part of the forecast. I’m not saying that is it going to be an outstanding couple of days of weather, but the weather pattern seems to be heading towards a nicer trend!

We gotta grind the next few days of weather out! Throughout all of Southern Idaho, the weather conditions will be subpar (at best) from Saturday through Tuesday, but at least there is a reason to be optimistic toward the end of the seven-day period! Keep your fingers crossed that the pattern doesn’t change!

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FRIDAY NIGHT (March 31, 2023)

MAGIC VALLEY: Mainly cloudy skies with a chance of rain and/or snow showers around, mainly before midnight. Low: 35. Winds: South 5-20 mph. WOOD RIVER VALLEY: Mainly cloudy skies with scattered snow showers around. Low: 26. Winds: South to Northeast 3-7 mph.

SATURDAY (April 1st)

MAGIC VALLEY: Mainly cloudy skies with a chance of rain and snow showers, especially after 10 AM. High: 49. Winds: Southwest 10-25 mph. WOOD RIVER VALLEY: Mainly cloudy skies with snow showers around. High: 35. Winds: Southwest to West 10-20 mph.

SATURDAY NIGHT:

MAGIC VALLEY: Mostly cloudy skies with some isolated snow showers around. Low: 32. Winds: West 5-15 mph. WOOD RIVER VALLEY: Mostly cloudy skies with some isolated snow showers around. Low: 20. Winds: West 5-15 mph.

SUNDAY (April 2nd)

MAGIC VALLEY: Mainly cloudy skies with scattered showers around. High: 39. Low: 28. WOOD RIVER VALLEY: Mostly cloudy skies with some scattered showers around. High: 32. Low: 18.

MONDAY (April 3rd)

MAGIC VALLEY: Cloudy skies with some scattered showers around. It will be breezy. High: 36. Low: 25. WOOD RIVER VALLEY: Mainly cloudy skies with a chance of showers. It will be breezy, too. High: 30. Low: 19.

TUESDAY (April 4th)

MAGIC VALLEY: Mainly cloudy skies with a chance of showers around. It will be breezy, too. High: 38. Low: 25. WOOD RIVER VALLEY: Mainly cloudy skies with a chance of showers around. It will be breezy as well. High: 31. Low: 16.

WEDNESDAY (April 5th)

MAGIC VALLEY: Mostly cloudy skies with some isolated showers around. High: 41. Low: 22. WOOD RIVER VALLEY: Mostly cloudy skies with some isolated showers around. High: 32. Low: 14.

THURSDAY (April 6th)

MAGIC VALLEY: Mostly sunny skies. High: 48. Low: 23. WOOD RIVER VALLEY: Mostly sunny skies. High: 35. Low: 18.

FRIDAY (April 7th)

MAGIC VALLEY: Mostly sunny skies. High: 48. Low: 23. WOOD RIVER VALLEY: Mostly sunny skies. High: 35. Low: 18.

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