# Frost dates for Waukesha, WI (53186)

**Do this (Safe, 2026-11-02):** Frost season started Sep 29. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 18 | Sep 29 | 134 |
| Median | May 1 | Oct 13 | 165 |
| Bold (9 in 10 years later) | Apr 18 | Oct 25 | 190 |

Frost = 32°F. Station: Waukesha Wwtp, WI, 0 mi away.

## Next nights (NWS overnight low)

- 2026-11-02: 58°F — Go (tonight)
- 2026-11-03: 57°F — Go
- 2026-11-04: 48°F — Go
- 2026-11-05: 43°F — Go
- 2026-11-06: 39°F — Wait
- 2026-11-07: 39°F — Wait
- 2026-11-08: 39°F — Wait

Go above 40°F · Wait 37–40°F · Cover 36°F or less · Freeze 28°F or less.

Source: Frost dates: NOAA NCEI U.S. Climate Normals 1991–2020, station Waukesha Wwtp, WI (0 mi, 135 ft lower than you). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/wi/waukesha · JSON: https://frostdatecalculator.com/p/wi/waukesha?format=json