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Will it freeze in Maplewood in the next 7 nights?
No overnight lows at or below 32°F are forecast in Maplewood during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 47°F Above 36°F · Slight Chance Drizzle then Cloudy
- Fri, Nov 6 35°F Frost possible · Mostly Clear
- Sat, Nov 7 36°F Frost possible · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Clear
- Mon, Nov 9 44°F Above 36°F · Clear
- Tue, Nov 10 44°F Above 36°F · Mostly Clear
- Wed, Nov 11 45°F Above 36°F · Mostly Clear
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 Maplewood
The median first fall hard-freeze date (28°F) is November 15, from NOAA’s 1991–2020 Climate Normals at St Louis Sci Center. 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 27 · Apr 12 · Apr 27 | Oct 15 · Oct 26 · Nov 7 | 197 days |
| 32°F freeze | Mar 14 · Apr 1 · Apr 18 | Oct 24 · Nov 4 · Nov 21 | 218 days |
| 28°F hard freeze | Mar 5 · Mar 22 · Apr 7 | Nov 2 · Nov 15 · Dec 4 | 239 days |
Average high temperature by month
1991–2020 normals at St Louis Sci Center
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 Maplewood, MO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: St Louis Sci Center (station USC00237452, elevation 515 ft), 3.2 mi from Maplewood. 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 Maplewood
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Brentwood, MO | 1.2 mi | Apr 1 | Nov 4 |
| Richmond Heights, MO | 1.2 mi | Apr 1 | Nov 4 |
| Shrewsbury, MO | 1.9 mi | Apr 1 | Nov 4 |
| Clayton, MO | 2.5 mi | Apr 1 | Nov 4 |
| Webster Groves, MO | 2.5 mi | Apr 1 | Nov 4 |
| Glendale, MO | 3.1 mi | Apr 1 | Nov 4 |
| Ladue, MO | 3.7 mi | Apr 1 | Nov 4 |
| University City, MO | 3.7 mi | Apr 1 | Nov 4 |
| St. Louis, MO | 4.3 mi | Apr 1 | Nov 4 |
| Crestwood, MO | 5.0 mi | Apr 1 | Nov 4 |
Frequently asked questions
When is the last frost in Maplewood?
On average, the last spring frost (32°F) in Maplewood is around April 1. In about 1 year in 10 it comes after April 18, and in 9 years in 10 it comes after March 14.
When is the first frost in Maplewood?
The first fall frost (32°F) usually arrives around November 4. There’s a 10% chance of a freeze by October 24 and a 90% chance by November 21.
Can it frost in Maplewood 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 12.
What growing zone is Maplewood?
Maplewood 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 63143. See growing zones in Missouri.
More: all Missouri frost dates · Missouri growing zones · frost vs. freeze