Birchwood, WI frost dates
Last spring frostAny monthno frost-free season
Freezing nights194 / yrat or below 32°F
Hardiness zone4aZone 4a
Gardening where frost is possible all year
The weather station nearest Birchwood, WI 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 Birchwood compares
- Nearby Eau Claire, WI, 92 km away, has a regular frost season (last frost Apr 24), a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Couderay 7 W, WI weather station, 20 km away (elevation 1,299 ft (396 m)).
Frost dates near Birchwood
- Mikana May 9 · Sep 29
- Brill May 8 · Oct 2
- Edgewater frost any month
- Haugen May 5 · Oct 4
- Sarona May 14 · Sep 28
- Rice Lake May 8 · Oct 2
- Stone Lake frost any month
- Weyerhaeuser May 9 · Sep 29
- Exeland May 19 · Sep 27
- Cameron May 8 · Oct 2
Frequently asked questions
When is the last frost in Birchwood, WI?
Birchwood, WI can freeze in any month, so there is no reliable last frost date. The nearest NOAA station averages 194 nights a year at or below 32°F.
What can I grow in Birchwood, WI?
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.