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Will it freeze in Anoka 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 CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 31°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
4 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 then Patchy Fog
- Fri, Nov 6 29°F Freeze · Areas Of Fog
- Sat, Nov 7 36°F Frost possible · Mostly Clear
- Sun, Nov 8 38°F Above 36°F · Mostly Clear
- Mon, Nov 9 39°F Above 36°F · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Partly Cloudy
- Wed, Nov 11 37°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 Anoka
The median first fall hard-freeze date (28°F) is October 13, from NOAA’s 1991–2020 Climate Normals at Andover 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 2 · May 16 · May 31 | Sep 10 · Sep 24 · Oct 6 | 129 days |
| 32°F freeze | Apr 23 · May 5 · May 21 | Sep 18 · Oct 2 · Oct 16 | 148 days |
| 28°F hard freeze | Apr 11 · Apr 25 · May 9 | Sep 27 · Oct 13 · Oct 27 | 168 days |
Average high temperature by month
1991–2020 normals at Andover 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 Anoka, MN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Andover 1N (station USC00210190, elevation 899 ft), 5.5 mi from Anoka. 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 Anoka
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Champlin, MN | 3.1 mi | May 5 | Oct 2 |
| Andover, MN | 3.7 mi | May 5 | Oct 2 |
| Dayton, MN | 4.3 mi | May 4 | Oct 5 |
| Ramsey, MN | 4.3 mi | May 4 | Oct 5 |
| Coon Rapids, MN | 5.0 mi | May 5 | Oct 2 |
| Brooklyn Park, MN | 7.5 mi | Apr 30 | Oct 8 |
| Maple Grove, MN | 8.1 mi | Apr 30 | Oct 8 |
| Rogers, MN | 9.3 mi | May 4 | Oct 5 |
| Blaine, MN | 9.3 mi | May 5 | Oct 2 |
| Oak Grove, MN | 9.9 mi | May 1 | Oct 7 |
Frequently asked questions
When is the last frost in Anoka?
On average, the last spring frost (32°F) in Anoka is around May 5. In about 1 year in 10 it comes after May 21, and in 9 years in 10 it comes after April 23.
When is the first frost in Anoka?
The first fall frost (32°F) usually arrives around October 2. There’s a 10% chance of a freeze by September 18 and a 90% chance by October 16.
Can it frost in Anoka 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 16.
What growing zone is Anoka?
Anoka 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 55316. See growing zones in Minnesota.
More: all Minnesota frost dates · Minnesota growing zones · frost vs. freeze