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Will it freeze in Monument in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 31°F (Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST).
Tonight: forecast low 31°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 31°F Freeze · Partly Cloudy
- Fri, Nov 6 29°F Freeze · Partly Cloudy
- Sat, Nov 7 30°F Freeze · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Clear
- Mon, Nov 9 37°F Above 36°F · Mostly Clear
- Tue, Nov 10 36°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 Monument
The median first fall hard-freeze date (28°F) is October 9, from NOAA’s 1991–2020 Climate Normals at Monument 3S. 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 29 · Jun 12 | Sep 9 · Sep 23 · Oct 2 | 116 days |
| 32°F freeze | May 5 · May 17 · May 30 | Sep 19 · Oct 1 · Oct 12 | 136 days |
| 28°F hard freeze | Apr 26 · May 6 · May 20 | Sep 28 · Oct 9 · Oct 20 | 154 days |
Average high temperature by month
1991–2020 normals at Monument 3S
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 Monument, CO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Monument 3S (station USC00055733, elevation 6,821 ft), 1.8 mi from Monument. 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 Monument
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Woodland Park, CO | 12 mi | Jun 1 | Sep 21 |
| Colorado Springs, CO | 15 mi | May 3 | Oct 8 |
| Castle Rock, CO | 21 mi | May 9 | Oct 2 |
| Castle Pines, CO | 27 mi | May 9 | Oct 2 |
| Fountain, CO | 28 mi | May 3 | Oct 8 |
| Parker, CO | 30 mi | May 9 | Oct 3 |
| Lone Tree, CO | 32 mi | May 5 | Oct 8 |
| Centennial, CO | 35 mi | May 5 | Oct 8 |
| Littleton, CO | 37 mi | May 2 | Oct 11 |
| Greenwood Village, CO | 37 mi | May 7 | Oct 8 |
Frequently asked questions
When is the last frost in Monument?
On average, the last spring frost (32°F) in Monument is around May 17. In about 1 year in 10 it comes after May 30, and in 9 years in 10 it comes after May 5.
When is the first frost in Monument?
The first fall frost (32°F) usually arrives around October 1. There’s a 10% chance of a freeze by September 19 and a 90% chance by October 12.
Can it frost in Monument 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 29.
What growing zone is Monument?
Monument is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 80132. See growing zones in Colorado.
More: all Colorado frost dates · Colorado growing zones · frost vs. freeze