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Will it freeze in Crystal in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 32°F (Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 32°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 32°F Freeze · Mostly Cloudy
- Fri, Nov 6 30°F Freeze · Partly Cloudy then Patchy Fog
- Sat, Nov 7 37°F Above 36°F · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 37°F Above 36°F · Partly Cloudy
- Wed, Nov 11 38°F Above 36°F · Partly Cloudy
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 Crystal
The median first fall hard-freeze date (28°F) is October 18, from NOAA’s 1991–2020 Climate Normals at Mpls Crystal Airport. 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 27 · May 9 · May 26 | Sep 18 · Sep 29 · Oct 11 | 141 days |
| 32°F freeze | Apr 17 · Apr 30 · May 17 | Sep 26 · Oct 8 · Oct 21 | 159 days |
| 28°F hard freeze | Apr 5 · Apr 20 · May 5 | Oct 4 · Oct 18 · Nov 1 | 179 days |
Average high temperature by month
1991–2020 normals at Mpls Crystal Airport
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 Crystal, MN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Mpls Crystal Airport (station USW00094960, elevation 861 ft), 1.7 mi from Crystal. 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 Crystal
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| New Hope, MN | 1.2 mi | Apr 29 | Oct 12 |
| Robbinsdale, MN | 1.9 mi | Apr 29 | Oct 12 |
| Brooklyn Center, MN | 3.1 mi | Apr 30 | Oct 8 |
| Golden Valley, MN | 3.1 mi | Apr 29 | Oct 12 |
| Brooklyn Park, MN | 5.0 mi | Apr 30 | Oct 8 |
| Plymouth, MN | 5.0 mi | Apr 29 | Oct 12 |
| Columbia Heights, MN | 5.6 mi | Apr 23 | Oct 16 |
| Fridley, MN | 5.6 mi | Apr 30 | Oct 8 |
| St. Louis Park, MN | 6.2 mi | Apr 29 | Oct 12 |
| Minneapolis, MN | 6.8 mi | Apr 23 | Oct 16 |
Frequently asked questions
When is the last frost in Crystal?
On average, the last spring frost (32°F) in Crystal is around April 30. In about 1 year in 10 it comes after May 17, and in 9 years in 10 it comes after April 17.
When is the first frost in Crystal?
The first fall frost (32°F) usually arrives around October 8. There’s a 10% chance of a freeze by September 26 and a 90% chance by October 21.
Can it frost in Crystal 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 9.
What growing zone is Crystal?
Crystal 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 55429. See growing zones in Minnesota.
More: all Minnesota frost dates · Minnesota growing zones · frost vs. freeze