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Will it freeze in Douglas in the next 7 nights?
No overnight lows at or below 32°F are forecast in Douglas during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 47°F Above 36°F · Mostly Clear
- Fri, Nov 6 47°F Above 36°F · Chance Rain Showers
- Sat, Nov 7 44°F Above 36°F · Mostly Clear
- Sun, Nov 8 43°F Above 36°F · Mostly Clear
- Mon, Nov 9 44°F Above 36°F · Mostly Clear
- Tue, Nov 10 45°F Above 36°F · Mostly Clear
- Wed, Nov 11 45°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Douglas
The median first fall hard-freeze date (28°F) is November 25, from NOAA’s 1991–2020 Climate Normals at Douglas. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Mar 18 · Apr 7 · Apr 27 | Oct 20 · Nov 3 · Nov 19 | 207 days |
| 32°F freeze | Feb 27 · Mar 18 · Apr 12 | Oct 27 · Nov 13 · Nov 30 | 235 days |
| 28°F hard freeze | Jan 31 · Feb 27 · Mar 24 | Nov 5 · Nov 25 · Dec 9 | 268 days |
Average high temperature by month
1991–2020 normals at Douglas
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Douglas, AZ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Douglas (station USC00022659, elevation 4,040 ft), 3.7 mi from Douglas. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Douglas
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Sierra Vista, AZ | 47 mi | Apr 5 | Nov 9 |
| Benson, AZ | 58 mi | Apr 12 | Nov 1 |
| Nogales, AZ | 82 mi | Mar 20 | Nov 17 |
| Sahuarita, AZ | 91 mi | Feb 25 | Nov 27 |
| Tucson, AZ | 94 mi | Feb 5 | Dec 9 |
| Thatcher, AZ | 99 mi | Mar 25 | Nov 9 |
| Safford, AZ | 99 mi | Mar 25 | Nov 9 |
| Oro Valley, AZ | 110 mi | Apr 2 | Nov 11 |
| Marana, AZ | 119 mi | Apr 2 | Nov 11 |
| Deming, NM | 121 mi | Apr 7 | Nov 3 |
Frequently asked questions
When is the last frost in Douglas?
On average, the last spring frost (32°F) in Douglas is around March 18. In about 1 year in 10 it comes after April 12, and in 9 years in 10 it comes after February 27.
When is the first frost in Douglas?
The first fall frost (32°F) usually arrives around November 13. There’s a 10% chance of a freeze by October 27 and a 90% chance by November 30.
Can it frost in Douglas after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 7.
What growing zone is Douglas?
Douglas is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 85626. See growing zones in Arizona.
More: all Arizona frost dates · Arizona growing zones · frost vs. freeze