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Mainly sunny, hot, and hazy on Tuesday

WX Headlines 9-1-2025
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We have a very good chance to see the northern lights tonight! For more information, head here: https://www.krtv.com/weather/the-northern-lights-may-be-visible-in-montana-monday-night

It has been hazy today, and widespread haze is expected all throughout Montana for most of this week. As we go through tonight, thicker smoke from Canadian wildfires will begin to infiltrate northeastern Montana. This thicker smoke will then slowly overspread north-central Montana from north to south as we go through tomorrow and will stick around through at least Wednesday. This Canadian wildfire smoke will impact the air quality. The air quality will at least be in the “moderate” category or the “unhealthy for sensitive groups” category, and at times, it may be “unhealthy for everyone”. If you are sensitive to smoke in the air, then make sure you limit your time outdoors for the next few days.

FULL FORECAST:

Mainly sunny, hot, and hazy on Tuesday

Tonight, we are going to have partly cloudy to mostly clear skies. Most locations will be dry tonight, but there will be isolated showers/storms this evening along the Rocky Mountain Front and near the mountains in central Montana, and there will be isolated showers around late tonight in northeastern Montana. Lows tonight will be in the 50s in most locations.

Tomorrow, we are going to have partly to mostly sunny skies, with the cloud cover becoming thicker the further east in north-central Montana you go. Most locations will be dry tomorrow, but there will be some showers and isolated thunderstorms in northeastern Montana (from Blaine County eastward). Around Helena, it will be mainly sunny and mainly dry tomorrow. It is also going to be very warm again tomorrow as highs are going to be in the 80s and low 90s. There will also be a little breeze around tomorrow evening along the eastern half of the Hi-Line.

On Wednesday, we are going to have partly to mostly sunny skies and dry conditions. For a lot of us, it will continue to be very warm on Wednesday as highs are going to be in the 80s and low 90s, but in eastern portions of north-central Montana, it will be cooler on Wednesday as highs are going to be back in the 70s. It will also be a bit breezy along the Rocky Mountain Front and around the Little Belts on Wednesday as sustained wind speeds are going to be between 10 and 20 mph.

A cold front will then pass through our area on Thursday bringing us cooler temperatures and more wind. On Thursday, highs are only going to be in the upper 60s and low to mid 70s. In western portions of north-central Montana (west of a line from Havre to Lewistown), it will be breezy on Thursday as sustained wind speeds are going to be between 10 and 20 mph. In eastern portions of north-central Montana (around and east of a line from Havre to Lewistown), it will be windy on Thursday as sustained wind speeds are going to be between 15 and 30 mph, and wind gusts up to 50 mph are possible. We are also going to have partly to mostly sunny skies and dry conditions on Thursday.

On Friday, we are going to have nice weather as we are going to have lots of sunshine, dry conditions, a little breeze (sustained wind speeds between 5 and 20 mph), and pleasant temperatures as highs are going to be in the upper 60s and low to mid 70s.

For this weekend, we are going to have partly to mostly sunny skies with some isolated PM showers and thunderstorms around, generally in the mountains. It is also going to be warm this weekend as highs are going to be in the mid to upper 70s and low to mid 80s, and there will be a little breeze around on Saturday.