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Will it freeze in Siloam Springs in the next 7 nights?
No overnight lows at or below 32°F are forecast in Siloam Springs during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 44°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 44°F Above 36°F · Chance Rain Showers then Mostly Cloudy
- Fri, Nov 6 36°F Frost possible · Partly Cloudy
- Sat, Nov 7 35°F Frost possible · Partly Cloudy
- Sun, Nov 8 37°F Above 36°F · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Mostly Clear
- Tue, Nov 10 45°F Above 36°F · Mostly Clear
- Wed, Nov 11 45°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 Siloam Springs
The median first fall hard-freeze date (28°F) is November 12, from NOAA’s 1991–2020 Climate Normals at Kansas 2 NE. 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 27 · Apr 13 · Apr 30 | Oct 10 · Oct 25 · Nov 6 | 193 days |
| 32°F freeze | Mar 13 · Mar 31 · Apr 18 | Oct 20 · Nov 2 · Nov 19 | 216 days |
| 28°F hard freeze | Feb 28 · Mar 19 · Apr 4 | Oct 28 · Nov 12 · Dec 1 | 238 days |
Average high temperature by month
1991–2020 normals at Kansas 2 NE
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 Siloam Springs, AR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Kansas 2 NE (station USC00344672, elevation 1,190 ft), 14 mi from Siloam Springs. 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 Siloam Springs
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Tontitown, AR | 16 mi | Apr 4 | Oct 31 |
| Centerton, AR | 17 mi | Apr 8 | Oct 28 |
| Cave Springs, AR | 18 mi | Apr 12 | Oct 26 |
| Farmington, AR | 19 mi | Apr 15 | Oct 21 |
| Prairie Grove, AR | 19 mi | Apr 15 | Oct 21 |
| Bentonville, AR | 21 mi | Apr 12 | Oct 26 |
| Springdale, AR | 21 mi | Apr 4 | Oct 31 |
| Lowell, AR | 22 mi | Apr 12 | Oct 26 |
| Fayetteville, AR | 22 mi | Apr 4 | Oct 31 |
| Rogers, AR | 23 mi | Apr 12 | Oct 26 |
Frequently asked questions
When is the last frost in Siloam Springs?
On average, the last spring frost (32°F) in Siloam Springs is around March 31. In about 1 year in 10 it comes after April 18, and in 9 years in 10 it comes after March 13.
When is the first frost in Siloam Springs?
The first fall frost (32°F) usually arrives around November 2. There’s a 10% chance of a freeze by October 20 and a 90% chance by November 19.
Can it frost in Siloam Springs 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 13.
What growing zone is Siloam Springs?
Siloam Springs 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 72761. See growing zones in Arkansas.
More: all Arkansas frost dates · Arkansas growing zones · frost vs. freeze