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Will it freeze in Laramie in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 30°F (Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST).
Tonight: forecast low 30°F. 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.
- Tonight 30°F Freeze · Mostly Cloudy
- Fri, Nov 6 30°F Freeze · Mostly Clear
- Sat, Nov 7 29°F Freeze · Mostly Clear
- Sun, Nov 8 33°F Frost possible · Mostly Clear
- Mon, Nov 9 33°F Frost possible · Partly Cloudy
- Tue, Nov 10 33°F Frost possible · Partly Cloudy
- Wed, Nov 11 33°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 Laramie
The median first fall hard-freeze date (28°F) is September 14, from NOAA’s 1991–2020 Climate Normals at Laramie 2 NW. 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 | rare in most years | rare in most years | 53 days |
| 32°F freeze | May 23 · Jun 7 · Jun 29 | Aug 17 · Sep 4 · Sep 18 | 88 days |
| 28°F hard freeze | May 9 · May 22 · Jun 6 | Sep 2 · Sep 14 · Sep 29 | 116 days |
Average high temperature by month
1991–2020 normals at Laramie 2 NW
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 Laramie, WY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Laramie 2 NW (station USC00485435, elevation 7,140 ft), 2.0 mi from Laramie. 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 Laramie
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Cheyenne, WY | 44 mi | May 14 | Oct 1 |
| Wellington, CO | 53 mi | May 3 | Oct 6 |
| Fort Collins, CO | 60 mi | May 2 | Oct 7 |
| Timnath, CO | 63 mi | May 3 | Oct 6 |
| Estes Park, CO | 65 mi | May 30 | Sep 17 |
| Severance, CO | 68 mi | May 3 | Oct 6 |
| Windsor, CO | 68 mi | May 3 | Oct 6 |
| Loveland, CO | 68 mi | May 10 | Oct 1 |
| Eaton, CO | 71 mi | May 2 | Oct 8 |
| Greeley, CO | 76 mi | May 2 | Oct 8 |
Frequently asked questions
When is the last frost in Laramie?
On average, the last spring frost (32°F) in Laramie is around June 7. In about 1 year in 10 it comes after June 29, and in 9 years in 10 it comes after May 23.
When is the first frost in Laramie?
The first fall frost (32°F) usually arrives around September 4. There’s a 10% chance of a freeze by August 17 and a 90% chance by September 18.
What growing zone is Laramie?
Laramie is in USDA Plant Hardiness Zone 4a (average annual extreme minimum temperature −30 to −25°F), based on the 2023 USDA map for ZIP code 82072. See growing zones in Wyoming.
More: all Wyoming frost dates · Wyoming growing zones · UV index today in Laramie · frost vs. freeze