Can you see the northern lights in Montana? Yes, but not on a schedule. Northern Montana is well south of where the lights appear most nights, so you need the right conditions and some luck. Here is the short answer:
- What you need: a clear, dark sky, an open view toward the north, and active space weather.
- Best hours: usually between 10 PM and 2 AM local time, according to NOAA.
- Best seasons: NOAA points to the spring and fall equinoxes. The Glacier National Park Conservancy says visitors usually have the best luck from late October to early March.
- How to check: use the free aurora forecasts from NOAA before you go out.
This guide explains each point in plain language and shows where to look in Glacier National Park.
What Are the Northern Lights?
The northern lights, also called the aurora borealis, are lights in the night sky. NOAA explains that they happen when energized electrons crash into oxygen and nitrogen in Earth’s upper atmosphere. The collisions release energy as light, in a way that is similar to a neon sign. The lights form about 80 to 500 kilometers (roughly 50 to 310 miles) above the ground.
Earth’s magnetic field guides these electrons toward the poles, so the aurora forms in a ring around each magnetic pole. When space weather gets stronger, called a geomagnetic storm, the ring stretches away from the pole. NOAA says that during major storms the aurora can be seen over most of the United States. The best area to watch is about 60 to 75 degrees latitude, where the lights can appear on more than half the nights of a year. Montana is south of that zone.
Can You See the Northern Lights in Montana?
Yes, when activity is high enough. Scientists measure that activity with the Kp index. The Kp index is a scale from 0 to 9 that shows how disturbed Earth’s magnetic field is. A Kp of 5 or more counts as a geomagnetic storm. Here is how NOAA describes each range:
| Kp level | What NOAA says |
| 0 to 2 | The aurora stays far north and looks dim |
| 3 to 5 | The aurora moves farther from the poles and becomes brighter and more active. From the right place, it can be very pleasing to watch |
| 6 to 7 | The aurora may be seen from the northern edge of the United States |
| 8 to 9 | The aurora is very bright and may appear overhead in the northern states |
For Glacier National Park, the Glacier National Park Conservancy says a Kp of 4 or higher gives you a chance. NOAA adds that nice displays are possible at Kp 3 or 4 if you are in the right place, and that these links between Kp and location are averages, so they do not always hold. Set realistic expectations too. The National Park Service notes that photos of the aurora do not always match what people see with their eyes.
When to Look
| Factor | What to know |
| Time of night | NOAA says the best aurora is usually within an hour or two of midnight, between 10 PM and 2 AM. With stronger activity, the active hours stretch into the evening and morning. |
| Time of year | NOAA says the best seasons are around the spring and fall equinoxes (March and September), because larger storms tend to happen then. The Glacier National Park Conservancy says late October to early March. Fall through early spring gives you the longest dark nights. |
| Moon | NOAA says a full moon makes the aurora look less bright, so try to avoid nights around a full moon. |
| Weather | The sky must be clear. Check your local cloud forecast as well as the aurora forecast. |
| The Sun | On October 15, 2024, NASA and NOAA announced that the Sun had reached solar maximum, the peak of its 11-year activity cycle. NASA said strong space weather can still happen after the peak, and that the declining phase often brings very strong solar events. Activity will slowly fade over the coming years. |
Where to Look in Glacier National Park
Two rules matter most: get away from lights, and find an open view toward the north. Glacier helps with the first one. Together with Waterton Lakes National Park in Canada, it forms the Waterton-Glacier International Dark Sky Park. A dark sky park is a place recognized by the International Dark Sky Association for its very dark skies and its work to reduce light pollution, which is artificial light that brightens the night sky. The National Park Service says the park received full certification in August 2021.
Western Montana’s tourism board lists these areas as prime viewing spots:
| Place | Notes |
| Lake McDonald | A glacier-carved lake a few miles from the west entrance. A wide lake gives a broad view of the sky. |
| Bowman and Kintla lakes | These lakes are in a more remote part of the park, so check current conditions before you go. |
| East Glacier corridor | The area near the park’s east side. |
Mountains can block a low northern horizon, so check your view before you settle in. Most phones have a compass app that helps you find north.
Access changes in fall and winter. The alpine section of Going-to-the-Sun Road closes for the winter, the closing date changes each year, and many park services close or switch to winter schedules. Check the National Park Service current conditions page before you drive. Our guide on how long Going-to-the-Sun Road takes covers the road in more detail.
Outside the Park
You do not have to be inside the park. NOAA’s advice is to get away from city lights and find a place with a clear view to the north. If you are staying in the Flathead Valley, look for open spaces away from town lights. The Big Sky Astronomy Club in Kalispell hosts public events and shares stargazing information.
How to Check the Forecast
NOAA’s Space Weather Prediction Center offers several free tools:
| Tool | What it shows |
| Aurora Dashboard | One page that collects NOAA’s aurora products |
| Aurora viewline for tonight and tomorrow night | The southernmost places from which you may see the aurora on the northern horizon, based on the highest forecast Kp between 6 PM and 6 AM Central Time |
| 3-day geomagnetic forecast | Forecast Kp values for the next three days |
| Aurora 30-minute forecast | A short-term forecast for the next half hour |
Stay Safe and Comfortable
- Stay near the road or your vehicle. The National Park Service says bears are most active at dawn, dusk and night, and advises against hiking at those times. Glacier is home to both black and grizzly bears, and the park advises carrying bear spray. Our guide to wildlife in Montana explains more.
- Protect your night vision. The National Park Service suggests using a red or green light to see your way at night.
- Dress warm. Watching for the lights means standing still in the cold for a long time, so wear layers.
Plan a Fall or Winter Trip
Aurora watching happens late at night, so staying close to the park means a short trip back to a warm place afterward. Our guide to the best time to visit Glacier National Park explains how the seasons change, and our list of Montana winter activities gives you things to do during the day.
Frequently Asked Questions
Can you see the northern lights in Montana?
Yes, when space weather is active enough. NOAA says that during major geomagnetic storms the aurora can be seen over most of the United States. It is not guaranteed on any given night.
What is the best time to see the northern lights in Montana?
NOAA says the best hours are usually between 10 PM and 2 AM. For the season, NOAA points to the spring and fall equinoxes, and the Glacier National Park Conservancy says late October to early March.
Can you see the northern lights in Glacier National Park?
Yes. The Glacier National Park Conservancy says a Kp of 4 or higher gives you a chance. The park is also part of an International Dark Sky Park, which helps because the skies are very dark.
What time will Montana see the northern lights tonight?
No one can know in advance. Check NOAA’s forecast tools, and remember that the best hours are usually between 10 PM and 2 AM local time.
Is Glacier National Park a dark sky park?
Yes. Together with Waterton Lakes National Park in Canada, it forms the Waterton-Glacier International Dark Sky Park, the first dark sky park to cross an international border. It received full certification in August 2021.
Make the Most of Your Trip
The northern lights take patience, but the forecasts help you choose the right night. If you want a comfortable home base while you wait, browse our vacation rentals near Glacier National Park.
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