Checking current alerts… View NWS forecast and alerts.
Will it freeze in Harrison in the next 7 nights?
No overnight lows at or below 32°F are forecast in Harrison during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 43°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 43°F Above 36°F · Partly Cloudy
- Fri, Nov 6 35°F Frost possible · Partly Cloudy
- Sat, Nov 7 34°F Frost possible · Partly Cloudy
- Sun, Nov 8 36°F Frost possible · Mostly Clear
- Mon, Nov 9 40°F Above 36°F · Mostly Clear
- Tue, Nov 10 43°F Above 36°F · Mostly Clear
- Wed, Nov 11 43°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 Harrison
The median first fall hard-freeze date (28°F) is November 10, from NOAA’s 1991–2020 Climate Normals at Harrison Boone 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 | Mar 30 · Apr 15 · May 2 | Oct 7 · Oct 21 · Nov 2 | 186 days |
| 32°F freeze | Mar 17 · Apr 3 · Apr 21 | Oct 16 · Oct 30 · Nov 14 | 210 days |
| 28°F hard freeze | Mar 4 · Mar 24 · Apr 9 | Oct 27 · Nov 10 · Nov 30 | 232 days |
Average high temperature by month
1991–2020 normals at Harrison Boone 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 Harrison, AR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Harrison Boone County Airport (station USW00013971, elevation 1,374 ft), 2.7 mi from Harrison. 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 Harrison
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Berryville, AR | 27 mi | Mar 30 | Nov 7 |
| Branson, MO | 27 mi | Apr 8 | Nov 2 |
| Mountain Home, AR | 42 mi | Mar 31 | Nov 1 |
| Ozark, MO | 55 mi | Apr 15 | Oct 23 |
| Nixa, MO | 57 mi | Apr 15 | Oct 23 |
| Pea Ridge, AR | 58 mi | Apr 4 | Oct 30 |
| Lowell, AR | 58 mi | Apr 12 | Oct 26 |
| Rogers, AR | 58 mi | Apr 12 | Oct 26 |
| Springdale, AR | 58 mi | Apr 4 | Oct 31 |
| Clarksville, AR | 58 mi | Mar 24 | Nov 10 |
Frequently asked questions
When is the last frost in Harrison?
On average, the last spring frost (32°F) in Harrison is around April 3. In about 1 year in 10 it comes after April 21, and in 9 years in 10 it comes after March 17.
When is the first frost in Harrison?
The first fall frost (32°F) usually arrives around October 30. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 14.
Can it frost in Harrison 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 15.
What growing zone is Harrison?
Harrison is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 72601. See growing zones in Arkansas.
More: all Arkansas frost dates · Arkansas growing zones · frost vs. freeze