Checking current alerts… View NWS forecast and alerts.
Will it freeze in Molalla in the next 7 nights?
No overnight lows at or below 32°F are forecast in Molalla during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 39°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 39°F Above 36°F · Mostly Cloudy
- Fri, Nov 6 45°F Above 36°F · Chance Light Rain
- Sat, Nov 7 46°F Above 36°F · Light Rain
- Sun, Nov 8 39°F Above 36°F · Mostly Cloudy
- Mon, Nov 9 45°F Above 36°F · Light Rain Likely
- Tue, Nov 10 47°F Above 36°F · Chance Light Rain
- Wed, Nov 11 44°F Above 36°F · Chance Light Rain
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 Molalla
The median first fall hard-freeze date (28°F) is December 6, from NOAA’s 1991–2020 Climate Normals at Molalla 7NE. 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 26 · Apr 15 · May 4 | Oct 16 · Nov 1 · Nov 19 | 199 days |
| 32°F freeze | Feb 24 · Mar 16 · Apr 12 | Oct 31 · Nov 19 · Dec 9 | 247 days |
| 28°F hard freeze | Jan 2 · Feb 14 · Mar 10 | Nov 13 · Dec 6 · Jan 12 | 297 days |
Average high temperature by month
1991–2020 normals at Molalla 7NE
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 Molalla, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Molalla 7NE (station USC00355681, elevation 647 ft), 4.3 mi from Molalla. 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 Molalla
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Canby, OR | 9.3 mi | Mar 18 | Nov 13 |
| Oregon City, OR | 13 mi | Mar 18 | Nov 18 |
| Woodburn, OR | 14 mi | Mar 16 | Nov 14 |
| Silverton, OR | 14 mi | Mar 28 | Nov 10 |
| Wilsonville, OR | 14 mi | Mar 18 | Nov 13 |
| West Linn, OR | 16 mi | Mar 18 | Nov 18 |
| Estacada, OR | 16 mi | Mar 27 | Nov 14 |
| Gladstone, OR | 16 mi | Mar 18 | Nov 18 |
| Tualatin, OR | 18 mi | Apr 1 | Nov 6 |
| Lake Oswego, OR | 19 mi | Mar 18 | Nov 18 |
Frequently asked questions
When is the last frost in Molalla?
On average, the last spring frost (32°F) in Molalla is around March 16. In about 1 year in 10 it comes after April 12, and in 9 years in 10 it comes after February 24.
When is the first frost in Molalla?
The first fall frost (32°F) usually arrives around November 19. There’s a 10% chance of a freeze by October 31 and a 90% chance by December 9.
Can it frost in Molalla 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 Molalla?
Molalla is in USDA Plant Hardiness Zone 8b (average annual extreme minimum temperature 15 to 20°F), based on the 2023 USDA map for ZIP code 97038. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · frost vs. freeze