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Will it freeze in DuBois in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 32°F (Sun, Nov 8, 6:00 PM EST to Mon, Nov 9, 6:00 AM EST).
Tonight: forecast low 45°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 45°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 38°F Above 36°F · Chance Light Rain
- Sat, Nov 7 34°F Frost possible · Light Rain Likely
- Sun, Nov 8 32°F Freeze · Slight Chance Rain Showers
- Mon, Nov 9 33°F Frost possible · Mostly Clear
- Tue, Nov 10 32°F Freeze · Partly Cloudy
- Wed, Nov 11 30°F Freeze · 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 DuBois
The median first fall hard-freeze date (28°F) is October 28, from NOAA’s 1991–2020 Climate Normals at Dubois Jefferson County 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 30 · May 18 · Jun 1 | Sep 19 · Oct 1 · Oct 13 | 137 days |
| 32°F freeze | Apr 19 · May 6 · May 23 | Sep 29 · Oct 14 · Nov 1 | 160 days |
| 28°F hard freeze | Apr 8 · Apr 24 · May 13 | Oct 11 · Oct 28 · Nov 11 | 186 days |
Average high temperature by month
1991–2020 normals at Dubois Jefferson County 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 DuBois, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Dubois Jefferson County Airport (station USW00004787, elevation 1,814 ft), 8.4 mi from DuBois. 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 DuBois
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Punxsutawney, PA | 17 mi | May 10 | Oct 12 |
| Clearfield, PA | 18 mi | May 4 | Oct 11 |
| St. Marys, PA | 26 mi | May 14 | Oct 6 |
| Indiana, PA | 40 mi | May 8 | Oct 13 |
| Tyrone, PA | 41 mi | May 13 | Oct 1 |
| Altoona, PA | 47 mi | Apr 25 | Oct 21 |
| Hollidaysburg, PA | 52 mi | Apr 25 | Oct 20 |
| State College, PA | 52 mi | Apr 20 | Oct 26 |
| Bellefonte, PA | 53 mi | Apr 20 | Oct 26 |
| Warren, PA | 53 mi | May 4 | Oct 21 |
Frequently asked questions
When is the last frost in DuBois?
On average, the last spring frost (32°F) in DuBois is around May 6. In about 1 year in 10 it comes after May 23, and in 9 years in 10 it comes after April 19.
When is the first frost in DuBois?
The first fall frost (32°F) usually arrives around October 14. There’s a 10% chance of a freeze by September 29 and a 90% chance by November 1.
Can it frost in DuBois 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 18.
What growing zone is DuBois?
DuBois is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 15801. See growing zones in Pennsylvania.
More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze