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Will it freeze in Westminster in the next 7 nights?
No overnight lows at or below 32°F are forecast in Westminster during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 57°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 57°F Above 36°F · Chance Rain Showers
- Fri, Nov 6 46°F Above 36°F · Mostly Cloudy
- Sat, Nov 7 41°F Above 36°F · Partly Cloudy
- Sun, Nov 8 38°F Above 36°F · Mostly Clear
- Mon, Nov 9 38°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°F Above 36°F · Mostly Clear
- Wed, Nov 11 37°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 Westminster
The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Hanover 4 SW. 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 22 | Sep 28 · Oct 8 · Oct 21 | 154 days |
| 32°F freeze | Apr 9 · Apr 24 · May 11 | Oct 6 · Oct 20 · Nov 2 | 177 days |
| 28°F hard freeze | Mar 26 · Apr 9 · Apr 26 | Oct 14 · Oct 31 · Nov 14 | 203 days |
Average high temperature by month
1991–2020 normals at Hanover 4 SW
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 Westminster, MD come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Hanover 4 SW (station USC00363665, elevation 558 ft), 13 mi from Westminster. 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 Westminster
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Manchester, MD | 8.1 mi | Apr 19 | Oct 25 |
| Hampstead, MD | 8.7 mi | Apr 19 | Oct 25 |
| Taneytown, MD | 9.9 mi | Apr 22 | Oct 20 |
| Hanover, PA | 16 mi | Apr 24 | Oct 20 |
| Mount Airy, MD | 16 mi | Apr 14 | Oct 29 |
| New Freedom, PA | 20 mi | Apr 19 | Oct 25 |
| Walkersville, MD | 21 mi | Apr 2 | Nov 6 |
| Gettysburg, PA | 21 mi | Apr 24 | Oct 21 |
| Thurmont, MD | 22 mi | Apr 14 | Oct 30 |
| Frederick, MD | 24 mi | Apr 2 | Nov 6 |
Frequently asked questions
When is the last frost in Westminster?
On average, the last spring frost (32°F) in Westminster is around April 24. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 9.
When is the first frost in Westminster?
The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 6 and a 90% chance by November 2.
Can it frost in Westminster 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 Westminster?
Westminster 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 21157. See growing zones in Maryland.
More: all Maryland frost dates · Maryland growing zones · frost vs. freeze