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Will it freeze in Blackwell in the next 7 nights?
No overnight lows at or below 32°F are forecast in Blackwell during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 39°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 39°F Above 36°F · Slight Chance Rain Showers then Partly Cloudy
- Fri, Nov 6 36°F Frost possible · Mostly Cloudy
- Sat, Nov 7 37°F Above 36°F · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Clear
- Mon, Nov 9 44°F Above 36°F · Clear
- Tue, Nov 10 48°F Above 36°F · Mostly Clear
- Wed, Nov 11 46°F Above 36°F · 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 Blackwell
The median first fall hard-freeze date (28°F) is November 6, from NOAA’s 1991–2020 Climate Normals at Blackwell 1SSW. 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 7 · Apr 23 · May 6 | Oct 4 · Oct 20 · Nov 1 | 179 days |
| 32°F freeze | Mar 26 · Apr 12 · Apr 28 | Oct 16 · Oct 29 · Nov 11 | 199 days |
| 28°F hard freeze | Mar 14 · Apr 1 · Apr 18 | Oct 23 · Nov 6 · Nov 22 | 218 days |
Average high temperature by month
1991–2020 normals at Blackwell 1SSW
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 Blackwell, OK come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Blackwell 1SSW (station USC00340818, elevation 1,033 ft), 1.4 mi from Blackwell. 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 Blackwell
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Ponca City, OK | 14 mi | Apr 10 | Oct 27 |
| Arkansas City, KS | 24 mi | Apr 11 | Oct 27 |
| Wellington, KS | 34 mi | Apr 15 | Oct 29 |
| Winfield, KS | 35 mi | Apr 16 | Oct 22 |
| Enid, OK | 42 mi | Apr 6 | Nov 1 |
| Mulvane, KS | 47 mi | Apr 14 | Oct 22 |
| Stillwater, OK | 48 mi | Apr 5 | Oct 30 |
| Derby, KS | 52 mi | Apr 14 | Oct 22 |
| Haysville, KS | 53 mi | Apr 14 | Oct 22 |
| Goddard, KS | 62 mi | Apr 8 | Oct 27 |
Frequently asked questions
When is the last frost in Blackwell?
On average, the last spring frost (32°F) in Blackwell is around April 12. In about 1 year in 10 it comes after April 28, and in 9 years in 10 it comes after March 26.
When is the first frost in Blackwell?
The first fall frost (32°F) usually arrives around October 29. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 11.
Can it frost in Blackwell 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 April 23.
What growing zone is Blackwell?
Blackwell is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 74631. See growing zones in Oklahoma.
More: all Oklahoma frost dates · Oklahoma growing zones · frost vs. freeze