Frost dates 2026–2027

Frost dates for Woodland Park, Colorado

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Divide 4NW, 8.8 mi away (close match).

Last spring frostJun 1
First fall frostSep 21
110 frost-free days
Last spring frostJun 11 year in 10 after Jun 17
First fall frostSep 211 year in 10 by Sep 7
Growing season110 daysbetween median 32°F dates
Hardiness zoneZone 5b−15 to −10°F average extreme low

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Will it freeze in Woodland Park in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 27°F (Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST).

Tonight: forecast low 27°F. Hard freeze.

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.

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 Woodland Park

The median first fall hard-freeze date (28°F) is September 30, from NOAA’s 1991–2020 Climate Normals at Divide 4NW. This is the 50% probability date, not a forecast for this year.

TemperatureLast 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 Jun 2 · Jun 15 · Jul 2 Aug 27 · Sep 10 · Sep 23 85 days
32°F freeze May 22 · Jun 1 · Jun 17 Sep 7 · Sep 21 · Oct 2 110 days
28°F hard freeze May 10 · May 21 · Jun 2 Sep 17 · Sep 30 · Oct 14 130 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00052294. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Divide 4NW

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 Woodland Park, CO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Divide 4NW (station USC00052294, elevation 9,134 ft), 8.8 mi from Woodland Park. 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 Woodland Park

CityDistanceLast spring frostFirst fall frost
Monument, CO 12 mi May 17 Oct 1
Colorado Springs, CO 19 mi May 3 Oct 8
Castle Rock, CO 29 mi May 9 Oct 2
Fountain, CO 30 mi May 3 Oct 8
Castle Pines, CO 34 mi May 9 Oct 2
Lone Tree, CO 38 mi May 5 Oct 8
Parker, CO 38 mi May 9 Oct 3
Cañon City, CO 39 mi May 4 Oct 7
Littleton, CO 41 mi May 2 Oct 11
Centennial, CO 42 mi May 5 Oct 8

Frequently asked questions

When is the last frost in Woodland Park?

On average, the last spring frost (32°F) in Woodland Park is around June 1. In about 1 year in 10 it comes after June 17, and in 9 years in 10 it comes after May 22.

When is the first frost in Woodland Park?

The first fall frost (32°F) usually arrives around September 21. There’s a 10% chance of a freeze by September 7 and a 90% chance by October 2.

Can it frost in Woodland Park 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 15.

What growing zone is Woodland Park?

Woodland Park 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 80863. See growing zones in Colorado.

More: all Colorado frost dates · Colorado growing zones · frost vs. freeze