Melrose, MT frost dates
Last spring frostAny monthno frost-free season
Freezing nights213 / yrat or below 32°F
Hardiness zone5aZone 5a
Gardening where frost is possible all year
The weather station nearest Melrose, 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.
About these dates
Based on 1991–2020 NOAA climate normals for the Glen 4 N, MT weather station, 12 km away (elevation 5,056 ft (1,541 m)).
Frost dates near Melrose
- Glen frost any month
- Divide Jun 10 · Sep 7
- Wise River frost any month
- Twin Bridges Jun 8 · Sep 2
- Silver Star Jun 8 · Sep 2
- Butte Jun 13 · Sep 5
- Ramsay Jun 13 · Sep 5
- Dillon Jun 5 · Sep 13
- Polaris frost any month
- Sheridan May 24 · Sep 22
Frequently asked questions
When is the last frost in Melrose, MT?
Melrose, MT can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 213 nights a year at or below 32°F.
What can I grow in Melrose, 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.