# Frost dates for Florissant, MO (63031)

**Do this (Safe, 2026-11-02):** Frost season started Oct 23. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Apr 17 | Oct 23 | 189 |
| Median | Apr 2 | Nov 4 | 216 |
| Bold (9 in 10 years later) | Mar 17 | Nov 18 | 246 |

Frost = 32°F. Station: St Louis Lambert Intl AP, MO, 4 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 58°F — Go (tonight)
- 2026-11-02: 65°F — Go
- 2026-11-03: 56°F — Go
- 2026-11-04: 49°F — Go
- 2026-11-05: 48°F — Go
- 2026-11-06: 44°F — Go
- 2026-11-07: 44°F — Go

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 St Louis Lambert Intl AP, MO (4 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

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