Wise River, MT frost dates

Gardening where frost is possible all year

The weather station nearest Wise River, 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 Wise Rvr 3 Wnw, MT weather station, 7 km away (elevation 5,732 ft (1,747 m)).

Frost dates near Wise River

• Divide Jun 10 · Sep 7
• Melrose frost any month
• Butte Jun 13 · Sep 5
• Glen frost any month
• Ramsay Jun 13 · Sep 5
• Wisdom frost any month
• Polaris frost any month
• Anaconda Jun 1 · Sep 14
• Jackson frost any month
• Warm Springs Jun 1 · Sep 14

Frequently asked questions

When is the last frost in Wise River, MT?

Wise River, MT can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 273 nights a year at or below 32°F.

What can I grow in Wise River, 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.