# Frost dates for Surprise, AZ (85387)

**Do this (Safe, 2026-11-02):** 18 days until first frost (Nov 20). Tender plants OK outdoors.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Mar 3 | Nov 20 | 262 |
| Median | Feb 5 | Dec 11 | 309 |
| Bold (9 in 10 years later) | Jan 6 | Jan 2 | -4 |

Frost = 32°F. Station: Wittmann 1SE, AZ, 8 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 51°F — Go (tonight)
- 2026-11-02: 50°F — Go
- 2026-11-03: 51°F — Go
- 2026-11-04: 52°F — Go
- 2026-11-05: 52°F — Go
- 2026-11-06: 53°F — Go
- 2026-11-07: 52°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 Wittmann 1SE, AZ (8 mi, 289 ft higher than you). Not endorsed by NOAA. Nights: National Weather Service.

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