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Will it freeze in West Haven in the next 7 nights?
No overnight lows at or below 32°F are forecast in West Haven during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 36°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 36°F Frost possible · Partly Cloudy
- Fri, Nov 6 35°F Frost possible · Mostly Clear
- Sat, Nov 7 37°F Above 36°F · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Mostly Clear
- Mon, Nov 9 41°F Above 36°F · Partly Cloudy
- Tue, Nov 10 39°F Above 36°F · Partly Cloudy
- Wed, Nov 11 40°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 West Haven
The median first fall hard-freeze date (28°F) is October 29, from NOAA’s 1991–2020 Climate Normals at Ogden Sugar Factory. 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 22 · May 7 · May 26 | Sep 23 · Oct 6 · Oct 21 | 152 days |
| 32°F freeze | Apr 5 · Apr 22 · May 9 | Oct 1 · Oct 18 · Nov 2 | 177 days |
| 28°F hard freeze | Mar 12 · Apr 3 · Apr 22 | Oct 15 · Oct 29 · Nov 13 | 208 days |
Average high temperature by month
1991–2020 normals at Ogden Sugar Factory
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 West Haven, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Ogden Sugar Factory (station USC00426414, elevation 4,280 ft), 2.1 mi from West Haven. 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 West Haven
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Roy, UT | 2.5 mi | Apr 22 | Oct 22 |
| Riverdale, UT | 3.7 mi | Apr 22 | Oct 22 |
| Ogden, UT | 4.3 mi | Apr 21 | Oct 23 |
| Washington Terrace, UT | 5.0 mi | Apr 22 | Oct 22 |
| Clinton, UT | 5.0 mi | Apr 22 | Oct 22 |
| Sunset, UT | 5.0 mi | Apr 22 | Oct 22 |
| South Ogden, UT | 5.6 mi | Apr 22 | Oct 22 |
| Harrisville, UT | 6.2 mi | Apr 21 | Oct 23 |
| West Point, UT | 6.2 mi | Apr 22 | Oct 22 |
| Farr West, UT | 6.2 mi | Apr 22 | Oct 18 |
Frequently asked questions
When is the last frost in West Haven?
On average, the last spring frost (32°F) in West Haven is around April 22. In about 1 year in 10 it comes after May 9, and in 9 years in 10 it comes after April 5.
When is the first frost in West Haven?
The first fall frost (32°F) usually arrives around October 18. There’s a 10% chance of a freeze by October 1 and a 90% chance by November 2.
Can it frost in West Haven 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 7.
What growing zone is West Haven?
West Haven 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 84401. See growing zones in Utah.
More: all Utah frost dates · Utah growing zones · UV index today in West Haven · frost vs. freeze