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Will it freeze in Oshkosh in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 29°F (Fri, Nov 6, 6:00 PM CST to Sat, Nov 7, 6:00 AM CST).
Tonight: forecast low 35°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
6 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 35°F Frost possible · Mostly Cloudy
- Fri, Nov 6 29°F Freeze · Mostly Clear
- Sat, Nov 7 33°F Frost possible · Mostly Clear
- Sun, Nov 8 35°F Frost possible · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 36°F Frost possible · Partly Cloudy
- Wed, Nov 11 36°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 Oshkosh
The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Oshkosh. 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 20 · May 4 · May 19 | Sep 24 · Oct 6 · Oct 22 | 155 days |
| 32°F freeze | Apr 10 · Apr 24 · May 8 | Oct 4 · Oct 20 · Nov 2 | 178 days |
| 28°F hard freeze | Mar 31 · Apr 13 · Apr 26 | Oct 17 · Oct 31 · Nov 13 | 200 days |
Average high temperature by month
1991–2020 normals at Oshkosh
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 Oshkosh, WI come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Oshkosh (station USC00476330, elevation 750 ft), 0.3 mi from Oshkosh. 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 Oshkosh
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Neenah, WI | 11 mi | May 4 | Oct 6 |
| Fox Crossing, WI | 14 mi | May 4 | Oct 6 |
| Menasha, WI | 15 mi | May 4 | Oct 6 |
| North Fond du Lac, WI | 15 mi | May 1 | Oct 12 |
| Harrison, WI | 17 mi | May 4 | Oct 6 |
| Greenville, WI | 18 mi | May 4 | Oct 6 |
| Fond du Lac, WI | 19 mi | Apr 27 | Oct 19 |
| Ripon, WI | 19 mi | May 1 | Oct 11 |
| Berlin, WI | 20 mi | May 1 | Oct 8 |
| Appleton, WI | 20 mi | May 4 | Oct 6 |
Frequently asked questions
When is the last frost in Oshkosh?
On average, the last spring frost (32°F) in Oshkosh is around April 24. In about 1 year in 10 it comes after May 8, and in 9 years in 10 it comes after April 10.
When is the first frost in Oshkosh?
The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 4 and a 90% chance by November 2.
Can it frost in Oshkosh 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 4.
What growing zone is Oshkosh?
Oshkosh is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 54901. See growing zones in Wisconsin.
More: all Wisconsin frost dates · Wisconsin growing zones · UV index today in Oshkosh · frost vs. freeze