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Will it freeze in Harrisville in the next 7 nights?
No overnight lows at or below 32°F are forecast in Harrisville during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 37°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 37°F Above 36°F · Partly Cloudy
- Fri, Nov 6 38°F Above 36°F · Mostly Clear
- Sat, Nov 7 40°F Above 36°F · Mostly Clear
- Sun, Nov 8 43°F Above 36°F · Mostly Clear
- Mon, Nov 9 44°F Above 36°F · Partly Cloudy
- Tue, Nov 10 42°F Above 36°F · Partly Cloudy
- Wed, Nov 11 43°F Above 36°F · 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 Harrisville
The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Ogden Pioneer Ph. 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 21 · May 4 · May 29 | Sep 30 · Oct 12 · Oct 25 | 158 days |
| 32°F freeze | Apr 2 · Apr 21 · May 6 | Oct 8 · Oct 23 · Nov 6 | 184 days |
| 28°F hard freeze | Mar 12 · Apr 5 · Apr 21 | Oct 20 · Nov 3 · Nov 17 | 212 days |
Average high temperature by month
1991–2020 normals at Ogden Pioneer Ph
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 Harrisville, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Ogden Pioneer Ph (station USC00426404, elevation 4,350 ft), 3.5 mi from Harrisville. 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 Harrisville
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| North Ogden, UT | 2.5 mi | Apr 19 | Oct 22 |
| Farr West, UT | 2.5 mi | Apr 22 | Oct 18 |
| Pleasant View, UT | 3.1 mi | Apr 21 | Oct 23 |
| Ogden, UT | 4.3 mi | Apr 21 | Oct 23 |
| Plain City, UT | 5.6 mi | Apr 22 | Oct 18 |
| West Haven, UT | 6.2 mi | Apr 22 | Oct 18 |
| Riverdale, UT | 8.1 mi | Apr 22 | Oct 22 |
| South Ogden, UT | 8.1 mi | Apr 22 | Oct 22 |
| Washington Terrace, UT | 8.1 mi | Apr 22 | Oct 22 |
| Roy, UT | 8.7 mi | Apr 22 | Oct 22 |
Frequently asked questions
When is the last frost in Harrisville?
On average, the last spring frost (32°F) in Harrisville is around April 21. In about 1 year in 10 it comes after May 6, and in 9 years in 10 it comes after April 2.
When is the first frost in Harrisville?
The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 8 and a 90% chance by November 6.
Can it frost in Harrisville 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 Harrisville?
Harrisville is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 84414. See growing zones in Utah.
More: all Utah frost dates · Utah growing zones · frost vs. freeze