# Frost dates for Waukegan, IL (60085)

**Do this (Safe, 2026-11-02):** Frost season started Sep 30. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 14 | Sep 30 | 139 |
| Median | Apr 30 | Oct 19 | 172 |
| Bold (9 in 10 years later) | Apr 15 | Nov 3 | 202 |

Frost = 32°F. Station: Waukegan, IL, 2 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: 40°F — Wait
- 2026-11-07: 40°F — Wait
- 2026-11-08: 40°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 Waukegan, IL (2 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/il/waukegan · JSON: https://frostdatecalculator.com/p/il/waukegan?format=json