Checking current alerts… View NWS forecast and alerts.
Will it freeze in Douglas in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 32°F (Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST).
Tonight: forecast low 32°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
6 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 32°F Freeze · Mostly Cloudy
- Fri, Nov 6 33°F Frost possible · Clear
- Sat, Nov 7 30°F Freeze · Mostly Clear
- Sun, Nov 8 37°F Above 36°F · Mostly Clear
- Mon, Nov 9 35°F Frost possible · Partly Cloudy
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 36°F Frost possible · 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 October 3, from NOAA’s 1991–2020 Climate Normals at Douglas 1 SE. 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 | May 19 · Jun 1 · Jun 15 | Aug 31 · Sep 13 · Sep 27 | 104 days |
| 32°F freeze | May 7 · May 19 · Jun 2 | Sep 10 · Sep 23 · Oct 6 | 126 days |
| 28°F hard freeze | Apr 24 · May 7 · May 21 | Sep 18 · Oct 3 · Oct 16 | 147 days |
Average high temperature by month
1991–2020 normals at Douglas 1 SE
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, WY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Douglas 1 SE (station USC00482685, elevation 4,870 ft), 2.0 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 |
|---|---|---|---|
| Casper, WY | 47 mi | May 10 | Sep 29 |
| Torrington, WY | 79 mi | May 11 | Sep 29 |
| Laramie, WY | 100 mi | Jun 7 | Sep 4 |
| Gillette, WY | 105 mi | May 15 | Oct 1 |
| Scottsbluff, NE | 107 mi | May 8 | Oct 3 |
| Gering, NE | 109 mi | May 8 | Oct 3 |
| Rawlins, WY | 115 mi | May 17 | Oct 2 |
| Cheyenne, WY | 117 mi | May 14 | Oct 1 |
| Alliance, NE | 136 mi | May 11 | Oct 3 |
| Rapid City, SD | 142 mi | May 3 | Oct 8 |
Frequently asked questions
When is the last frost in Douglas?
On average, the last spring frost (32°F) in Douglas is around May 19. In about 1 year in 10 it comes after June 2, and in 9 years in 10 it comes after May 7.
When is the first frost in Douglas?
The first fall frost (32°F) usually arrives around September 23. There’s a 10% chance of a freeze by September 10 and a 90% chance by October 6.
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 June 1.
What growing zone is Douglas?
Douglas is in USDA Plant Hardiness Zone 5a (average annual extreme minimum temperature −20 to −15°F), based on the 2023 USDA map for ZIP code 82633. See growing zones in Wyoming.
More: all Wyoming frost dates · Wyoming growing zones · frost vs. freeze