What's the Weather Like in Boise Today?

If you’ve decided to move to Boise from another part of the country, or even another part of the state, you might be wondering what the weather is like here. Do we have four seasons, what’s the rainfall like, should you expect a dry heat or lots of humidity? You can look up all the weather data available and still not be entirely sure what to expect. Keep in mind that weather is subjective, if you move here from Florida, our winters will seem brutal, but if you move from Chicago you might find them quite mild. So with that in mind, let’s get to it. 


summer in boise

Don’t expect for summer to get the memo that it’s supposed to start in early-June, depending on the year it may start sometime in May or not until July. Even if it does start warming up in early June, you may still want to prepare for a few chillier days tossed in there for the next few weeks. You can expect June to fluctuate between the low 50’s and the high 80s. Once you survive the confusion of June, next comes the heat of July. While late in the evening or early in the morning you can still expect temperatures in the low 60’s, during the day you’ll want to prepare for a very dry heat somewhere between 80 and 100 degrees. There is nearly no humidity in Boise, which makes the heat a little more bearable. July heat prepares you for the August heat. Expect temperatures in the 90’s, and often for a few days, even in the 100’s. Another thing to note is fire season. While we don’t get fires every summer, a lot of the surrounding states do. Pay attention to air quality reports and if the air is thick with smoke and the sky looks strange, stay indoors. Summer in Boise is full of swimming pools, boating, hiking, floating the river, camping and so much more, but prepare accordingly for all your outdoor activities and pack plenty of sunscreen and water. 


fall in boise

Unlike Summer, once it’s fall in Boise, it usually sticks around and doesn’t change its mind much. That said, while the days will start getting cooler in September, you can expect a few warmer days in October before it finally gives way to full-fledged cooler days and changing leaves. Starting around late August really, the days will start dropping from the 80’s and move into the lower 70s in September, before finally cooling off to highs in the low 70’s and lows in the 40’s in October. By the time Halloween comes around, you’ll likely be able to see your breath in the morning, if not all day and night. As early fall makes way for late fall, towards Thanksgiving, there will be plenty of opportunities to pull out your winter coats. November brings temperatures in the high 40’s and low 30’s, sometimes even colder. By the end of November, you can start bringing out all of your ski and snowboarding gear to prepare for the soon-to-be snowfall that will cover the mountains, and possibly your own yard, with a dusting of snow. 


winter in boise

One morning in early December you’ll wake up and you’ll just know it’s winter. It’ll be sunny and 35 degrees and all the leaves will have fallen from the trees. The winter days in Boise are short, with the sun setting around 4:30 PM for a few months. Between late November and early March, expect the temperatures to hover somewhere between the mid-30s and the mid-teens. There, of course, will be some variance, but no matter where you’re from, it’ll be chilly. We get snowfall in these months, on average around 20 inches in Boise, but more up in the mountains. Because Boise is often sunny in early winter, if you wake up in the morning with an inch or two of snow coverage don’t be surprised if it’s melted into sad grey sludge by mid-afternoon. When you move to Boise you’ll hear one word over and over again when you mention winter: Inversion. The inversion usually comes around January and it leads to dreary grey skies. Inversion is when the cold air sits down in the valley while the warmer air is on top of the cloud coverage. Because of that, if you’re into skiing or hiking, you can drive up into the mountains, above the clouds, and find your sunny skies. 


spring in boise

Depending on who you ask, Spring in Boise either starts in March or in April. Usually, Winter puts up a little bit of a fight in March and the chillier weather can stick around for a few more weeks than you might like. That said, by late March the temperatures hover somewhere between the low 60s and the mid-30s, on average. One thing to keep in mind is that Springtime in Boise can have you wearing an entirely different outfit in the morning than in the afternoon. Mornings will stay chilly, and by afternoon it can be sunny and 70. You might find yourself turning the heat off and the AC on in your car after work. By April, the air has warmed up and will generally sit somewhere between the 50’s and 70’s, so at least you can put the winter coat away. The takeaway from Spring in Boise is to be prepared for anything. It might hail at 7 AM, then be sunny and 65 at lunchtime, and be rounded off by an evening thunderstorm. All that said, Boise is beautiful in the spring. For a few weeks, the surrounding foothills turn green and are speckled with wildflowers, the birds begin to chirp and the warmer days make you start to forget about the freezing days of just a few weeks earlier. 

As you settle into life in Boise, you'll quickly realize that our city offers a symphony of seasons, each with its own unique pros and cons. Whether you're embracing the vibrant colors of fall, the crisp air of winter, the blossoming beauty of spring, or the sun-drenched days of summer, there's something great to be found in every corner of the year. Welcome home to Boise.



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