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Will it freeze in North Branch 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 CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 30°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
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 then Patchy Fog
- Fri, Nov 6 26°F Hard freeze · Areas Of Fog
- Sat, Nov 7 33°F Frost possible · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 36°F Frost possible · Mostly Clear
- Tue, Nov 10 34°F Frost possible · Partly Cloudy
- Wed, Nov 11 35°F Frost possible · 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 North Branch
The median first fall hard-freeze date (28°F) is October 4, from NOAA’s 1991–2020 Climate Normals at Wild Rvr State Park. 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 15 · Jun 1 · Jun 14 | Sep 1 · Sep 16 · Sep 30 | 108 days |
| 32°F freeze | May 2 · May 19 · Jun 3 | Sep 10 · Sep 25 · Oct 8 | 128 days |
| 28°F hard freeze | Apr 23 · May 6 · May 22 | Sep 18 · Oct 4 · Oct 19 | 148 days |
Average high temperature by month
1991–2020 normals at Wild Rvr State Park
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 North Branch, MN come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Wild Rvr State Park (station USC00218986, elevation 840 ft), 10 mi from North Branch. 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 North Branch
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Chisago City, MN | 9.9 mi | May 3 | Oct 5 |
| Lindstrom, MN | 9.9 mi | May 3 | Oct 5 |
| Wyoming, MN | 12 mi | May 3 | Oct 5 |
| Cambridge, MN | 14 mi | May 2 | Oct 4 |
| Isanti, MN | 14 mi | May 2 | Oct 4 |
| East Bethel, MN | 17 mi | May 1 | Oct 7 |
| Forest Lake, MN | 18 mi | May 3 | Oct 5 |
| Ham Lake, MN | 21 mi | May 5 | Oct 2 |
| Oak Grove, MN | 21 mi | May 1 | Oct 7 |
| St. Francis, MN | 23 mi | May 1 | Oct 7 |
Frequently asked questions
When is the last frost in North Branch?
On average, the last spring frost (32°F) in North Branch is around May 19. In about 1 year in 10 it comes after June 3, and in 9 years in 10 it comes after May 2.
When is the first frost in North Branch?
The first fall frost (32°F) usually arrives around September 25. There’s a 10% chance of a freeze by September 10 and a 90% chance by October 8.
Can it frost in North Branch 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 1.
What growing zone is North Branch?
North Branch is in USDA Plant Hardiness Zone 4b (average annual extreme minimum temperature −25 to −20°F), based on the 2023 USDA map for ZIP code 55056. See growing zones in Minnesota.
More: all Minnesota frost dates · Minnesota growing zones · frost vs. freeze