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Will it freeze in Montrose in the next 7 nights?
No overnight lows at or below 32°F are forecast in Montrose during the next 7 nights in the available NWS frost forecast.
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.
6 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 34°F Frost possible · Mostly Clear
- Sat, Nov 7 33°F Frost possible · Clear
- Sun, Nov 8 35°F Frost possible · Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 35°F Frost possible · Partly Cloudy
- Wed, Nov 11 35°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 Montrose
The median first fall hard-freeze date (28°F) is October 24, from NOAA’s 1991–2020 Climate Normals at Montrose #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 | Apr 28 · May 11 · May 23 | Sep 22 · Oct 3 · Oct 17 | 145 days |
| 32°F freeze | Apr 13 · Apr 28 · May 12 | Oct 1 · Oct 14 · Oct 27 | 167 days |
| 28°F hard freeze | Mar 29 · Apr 14 · Apr 30 | Oct 10 · Oct 24 · Nov 7 | 191 days |
Average high temperature by month
1991–2020 normals at Montrose #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 Montrose, CO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Montrose #2 (station USC00055722, elevation 5,789 ft), 1.6 mi from Montrose. 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 Montrose
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Delta, CO | 24 mi | May 1 | Oct 7 |
| Gunnison, CO | 51 mi | Jun 21 | Sep 5 |
| Grand Junction, CO | 57 mi | Apr 14 | Oct 23 |
| Fruita, CO | 66 mi | Apr 27 | Oct 11 |
| Carbondale, CO | 73 mi | May 13 | Oct 3 |
| Rifle, CO | 74 mi | May 11 | Oct 4 |
| Aspen, CO | 75 mi | Jun 2 | Sep 23 |
| Glenwood Springs, CO | 80 mi | May 13 | Oct 3 |
| Durango, CO | 83 mi | May 21 | Oct 2 |
| Cortez, CO | 86 mi | May 12 | Oct 7 |
Frequently asked questions
When is the last frost in Montrose?
On average, the last spring frost (32°F) in Montrose is around April 28. In about 1 year in 10 it comes after May 12, and in 9 years in 10 it comes after April 13.
When is the first frost in Montrose?
The first fall frost (32°F) usually arrives around October 14. There’s a 10% chance of a freeze by October 1 and a 90% chance by October 27.
Can it frost in Montrose 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 11.
What growing zone is Montrose?
Montrose is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 81401. See growing zones in Colorado.
More: all Colorado frost dates · Colorado growing zones · frost vs. freeze