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Will it freeze in Glenwood Springs in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 32°F (Fri, Nov 6, 6:00 PM MST to Sat, Nov 7, 6:00 AM MST).
Tonight: forecast low 35°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
7 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 35°F Frost possible · Mostly Cloudy
- Fri, Nov 6 32°F Freeze · Mostly Clear
- Sat, Nov 7 34°F Frost possible · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Clear
- Mon, Nov 9 36°F Frost possible · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Mostly Clear
- Wed, Nov 11 36°F Frost possible · Partly Cloudy
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 Glenwood Springs
The median first fall hard-freeze date (28°F) is October 14, from NOAA’s 1991–2020 Climate Normals at Glenwood Springs #2. 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 16 · May 30 · Jun 13 | Sep 10 · Sep 23 · Oct 4 | 115 days |
| 32°F freeze | Apr 30 · May 13 · May 30 | Sep 20 · Oct 3 · Oct 15 | 142 days |
| 28°F hard freeze | Apr 14 · Apr 27 · May 11 | Sep 29 · Oct 14 · Oct 27 | 167 days |
Average high temperature by month
1991–2020 normals at Glenwood Springs #2
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 Glenwood Springs, CO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Glenwood Springs #2 (station USC00053359, elevation 5,895 ft), 2.4 mi from Glenwood Springs. 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 Glenwood Springs
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Carbondale, CO | 12 mi | May 13 | Oct 3 |
| Gypsum, CO | 21 mi | May 1 | Oct 14 |
| Rifle, CO | 23 mi | May 11 | Oct 4 |
| Eagle, CO | 29 mi | May 1 | Oct 14 |
| Aspen, CO | 36 mi | Jun 2 | Sep 23 |
| Avon, CO | 45 mi | Jun 21 | Sep 7 |
| Silverthorne, CO | 67 mi | Jun 21 | Sep 7 |
| Delta, CO | 68 mi | May 1 | Oct 7 |
| Craig, CO | 68 mi | Jun 6 | Sep 12 |
| Breckenridge, CO | 70 mi | Jun 21 | Sep 7 |
Frequently asked questions
When is the last frost in Glenwood Springs?
On average, the last spring frost (32°F) in Glenwood Springs is around May 13. In about 1 year in 10 it comes after May 30, and in 9 years in 10 it comes after April 30.
When is the first frost in Glenwood Springs?
The first fall frost (32°F) usually arrives around October 3. There’s a 10% chance of a freeze by September 20 and a 90% chance by October 15.
Can it frost in Glenwood Springs 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 May 30.
What growing zone is Glenwood Springs?
Glenwood Springs is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 81601. See growing zones in Colorado.
More: all Colorado frost dates · Colorado growing zones · frost vs. freeze