Checking current alerts… View NWS forecast and alerts.
Will it freeze in South Weber in the next 7 nights?
No overnight lows at or below 32°F are forecast in South Weber 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 34°F Frost possible · Mostly Clear
- Sat, Nov 7 37°F Above 36°F · Mostly Clear
- Sun, Nov 8 40°F Above 36°F · Mostly Clear
- Mon, Nov 9 42°F Above 36°F · Partly Cloudy
- Tue, Nov 10 40°F Above 36°F · Partly Cloudy
- Wed, Nov 11 41°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 South Weber
The median first fall hard-freeze date (28°F) is November 2, from NOAA’s 1991–2020 Climate Normals at Weber Basin Pump Plt 3. 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 26 · May 15 · Jun 10 | Sep 24 · Oct 7 · Oct 23 | 141 days |
| 32°F freeze | Apr 6 · Apr 29 · May 25 | Oct 1 · Oct 20 · Nov 5 | 172 days |
| 28°F hard freeze | Mar 16 · Apr 13 · May 5 | Oct 18 · Nov 2 · Nov 15 | 203 days |
Average high temperature by month
1991–2020 normals at Weber Basin Pump Plt 3
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 South Weber, UT come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Weber Basin Pump Plt 3 (station USC00429346, elevation 4,900 ft), 2.3 mi from South Weber. 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 South Weber
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| South Ogden, UT | 2.5 mi | Apr 22 | Oct 22 |
| Washington Terrace, UT | 3.1 mi | Apr 22 | Oct 22 |
| Layton, UT | 4.3 mi | Apr 29 | Oct 20 |
| Riverdale, UT | 4.3 mi | Apr 22 | Oct 22 |
| Sunset, UT | 4.3 mi | Apr 22 | Oct 22 |
| Clearfield, UT | 5.0 mi | Apr 29 | Oct 20 |
| Roy, UT | 6.2 mi | Apr 22 | Oct 22 |
| Clinton, UT | 6.2 mi | Apr 22 | Oct 22 |
| Ogden, UT | 6.8 mi | Apr 21 | Oct 23 |
| Kaysville, UT | 7.5 mi | Apr 19 | Oct 19 |
Frequently asked questions
When is the last frost in South Weber?
On average, the last spring frost (32°F) in South Weber is around April 29. In about 1 year in 10 it comes after May 25, and in 9 years in 10 it comes after April 6.
When is the first frost in South Weber?
The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 1 and a 90% chance by November 5.
Can it frost in South Weber 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 15.
What growing zone is South Weber?
South Weber 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 84405. See growing zones in Utah.
More: all Utah frost dates · Utah growing zones · frost vs. freeze