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Will it freeze in Wahpeton in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 26°F (Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST).
Tonight: forecast low 26°F. Hard 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 26°F Hard freeze · Mostly Cloudy
- Fri, Nov 6 26°F Hard freeze · Partly Cloudy
- Sat, Nov 7 31°F Freeze · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 32°F Freeze · Mostly Clear
- Tue, Nov 10 32°F Freeze · 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 Wahpeton
The median first fall hard-freeze date (28°F) is October 14, from NOAA’s 1991–2020 Climate Normals at Breckenridge 3E. 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 1 · May 13 · May 25 | Sep 12 · Sep 25 · Oct 6 | 134 days |
| 32°F freeze | Apr 21 · May 4 · May 17 | Sep 21 · Oct 3 · Oct 18 | 152 days |
| 28°F hard freeze | Apr 10 · Apr 24 · May 8 | Sep 30 · Oct 14 · Oct 29 | 171 days |
Average high temperature by month
1991–2020 normals at Breckenridge 3E
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 Wahpeton, ND come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Breckenridge 3E (station USC00210974, elevation 971 ft), 4.8 mi from Wahpeton. 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 Wahpeton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Fergus Falls, MN | 25 mi | May 4 | Oct 5 |
| Horace, ND | 37 mi | May 4 | Oct 2 |
| Moorhead, MN | 42 mi | May 5 | Oct 3 |
| Fargo, ND | 42 mi | May 4 | Oct 2 |
| West Fargo, ND | 43 mi | May 4 | Oct 2 |
| Detroit Lakes, MN | 52 mi | May 15 | Sep 24 |
| Morris, MN | 58 mi | May 4 | Oct 1 |
| Alexandria, MN | 65 mi | May 2 | Oct 8 |
| Valley City, ND | 80 mi | May 13 | Sep 26 |
| Watertown, SD | 98 mi | May 7 | Sep 30 |
Frequently asked questions
When is the last frost in Wahpeton?
On average, the last spring frost (32°F) in Wahpeton is around May 4. In about 1 year in 10 it comes after May 17, and in 9 years in 10 it comes after April 21.
When is the first frost in Wahpeton?
The first fall frost (32°F) usually arrives around October 3. There’s a 10% chance of a freeze by September 21 and a 90% chance by October 18.
Can it frost in Wahpeton 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 13.
What growing zone is Wahpeton?
Wahpeton 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 58076. See growing zones in North Dakota.
More: all North Dakota frost dates · North Dakota growing zones · frost vs. freeze