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Will it freeze in Rawlins 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.
7 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 31°F Freeze · Mostly Cloudy
- Fri, Nov 6 29°F Freeze · Mostly Clear
- Sat, Nov 7 30°F Freeze · Mostly Clear
- Sun, Nov 8 36°F Frost possible · Mostly Clear
- Mon, Nov 9 36°F Frost possible · Partly Cloudy
- Tue, Nov 10 34°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 Rawlins
The median first fall hard-freeze date (28°F) is October 12, from NOAA’s 1991–2020 Climate Normals at Rawlins 1N. 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 17 · May 31 · Jun 9 | Sep 12 · Sep 24 · Oct 6 | 117 days |
| 32°F freeze | May 5 · May 17 · May 31 | Sep 22 · Oct 2 · Oct 17 | 138 days |
| 28°F hard freeze | Apr 21 · May 6 · May 18 | Sep 28 · Oct 12 · Oct 25 | 158 days |
Average high temperature by month
1991–2020 normals at Rawlins 1N
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 Rawlins, WY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Rawlins 1N (station USC00487529, elevation 6,908 ft), 1.6 mi from Rawlins. 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 Rawlins
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Casper, WY | 86 mi | May 10 | Sep 29 |
| Craig, CO | 89 mi | Jun 6 | Sep 12 |
| Laramie, WY | 90 mi | Jun 7 | Sep 4 |
| Steamboat Springs, CO | 93 mi | Jun 9 | Sep 12 |
| Rock Springs, WY | 104 mi | May 24 | Sep 24 |
| Riverton, WY | 104 mi | May 12 | Sep 24 |
| Lander, WY | 106 mi | May 18 | Sep 27 |
| Douglas, WY | 115 mi | May 19 | Sep 23 |
| Green River, WY | 117 mi | May 24 | Sep 22 |
| Estes Park, CO | 132 mi | May 30 | Sep 17 |
Frequently asked questions
When is the last frost in Rawlins?
On average, the last spring frost (32°F) in Rawlins is around May 17. In about 1 year in 10 it comes after May 31, and in 9 years in 10 it comes after May 5.
When is the first frost in Rawlins?
The first fall frost (32°F) usually arrives around October 2. There’s a 10% chance of a freeze by September 22 and a 90% chance by October 17.
Can it frost in Rawlins 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 31.
What growing zone is Rawlins?
Rawlins is in USDA Plant Hardiness Zone 5a (average annual extreme minimum temperature −20 to −15°F), based on the 2023 USDA map for ZIP code 82334. See growing zones in Wyoming.
More: all Wyoming frost dates · Wyoming growing zones · frost vs. freeze