# Frost dates for Crystal Lake, IL (60014)

**Do this (Safe, 2026-11-02):** Frost season started Oct 7. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 9 | Oct 7 | 151 |
| Median | Apr 25 | Oct 22 | 180 |
| Bold (9 in 10 years later) | Apr 11 | Nov 4 | 207 |

Frost = 32°F. Station: Crystal Lake 4NW, IL, 4 mi away.

## Next nights (NWS overnight low)

- 2026-11-02: 59°F — Go (tonight)
- 2026-11-03: 57°F — Go
- 2026-11-04: 48°F — Go
- 2026-11-05: 44°F — Go
- 2026-11-06: 40°F — Wait
- 2026-11-07: 40°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 Crystal Lake 4NW, IL (4 mi, 59 ft higher than you). Not endorsed by NOAA. Nights: National Weather Service.

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