Seeley Lake, MT frost dates
Last spring frostAny monthno frost-free season
Freezing nights215 / yrat or below 32°F
Hardiness zone5aZone 5a
Gardening where frost is possible all year
The weather station nearest Seeley Lake, MT records freezing temperatures in every month often enough that NOAA cannot define a frost-free season. Gardening is still possible — it just means planning for frost at any time:
- Grow fast, cold-tolerant crops: Radishes, Lettuce, Spinach, Kale, Peas, Potatoes, Swiss Chard, Garlic.
- Plant once the soil can be worked — usually late spring to early summer at high elevation — and keep row covers ready for clear, still nights.
- Use season extension: cold frames, low tunnels, wall-of-water cloches or a greenhouse turn a few frost-free weeks into a real season.
- Frost-tender crops (tomatoes, squash, beans) need protection all season; choose the earliest varieties you can find.
How Seeley Lake compares
- Nearby Missoula, MT, 53 km away, has a regular frost season (last frost May 10), a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Seeley Lake Rs, MT weather station, 5 km away (elevation 4,101 ft (1,250 m)).
Frost dates near Seeley Lake
- Ovando frost any month
- Condon May 20 · Sep 22
- Bonner May 10 · Oct 1
- Arlee May 12 · Oct 2
- Milltown May 10 · Oct 1
- Saint Ignatius May 12 · Oct 2
- Clinton frost any month
- Missoula May 10 · Oct 1
- Ravalli May 12 · Oct 2
- Helmville frost any month
Frequently asked questions
When is the last frost in Seeley Lake, MT?
Seeley Lake, MT can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 215 nights a year at or below 32°F.
What can I grow in Seeley Lake, MT?
Fast, cold-tolerant crops such as radishes, lettuce, spinach, kale, peas and potatoes, ideally under row covers, cold frames or a greenhouse. Frost-tender crops like tomatoes need protection all season.