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Will it freeze in Leavenworth in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 32°F (Fri, Nov 6, 6:00 PM CST to Sat, Nov 7, 6:00 AM CST).
Tonight: forecast low 40°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 40°F Above 36°F · Cloudy
- Fri, Nov 6 32°F Freeze · Partly Cloudy
- Sat, Nov 7 35°F Frost possible · Mostly Clear
- Sun, Nov 8 39°F Above 36°F · Clear
- Mon, Nov 9 43°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 Leavenworth
The median first fall hard-freeze date (28°F) is November 4, from NOAA’s 1991–2020 Climate Normals at Leavenworth. 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 8 · Apr 21 · May 3 | Oct 1 · Oct 18 · Oct 30 | 178 days |
| 32°F freeze | Mar 31 · Apr 12 · Apr 25 | Oct 13 · Oct 27 · Nov 7 | 196 days |
| 28°F hard freeze | Mar 18 · Apr 3 · Apr 17 | Oct 23 · Nov 4 · Nov 18 | 215 days |
Average high temperature by month
1991–2020 normals at Leavenworth
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 Leavenworth, KS come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Leavenworth (station USC00144588, elevation 870 ft), 0.4 mi from Leavenworth. 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 Leavenworth
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Lansing, KS | 5.6 mi | Apr 19 | Oct 19 |
| Basehor, KS | 13 mi | Apr 16 | Oct 22 |
| Parkville, MO | 14 mi | Apr 13 | Oct 24 |
| Kansas City, KS | 17 mi | Apr 4 | Nov 2 |
| Tonganoxie, KS | 17 mi | Apr 21 | Oct 17 |
| Bonner Springs, KS | 17 mi | Apr 16 | Oct 22 |
| Smithville, MO | 20 mi | Apr 18 | Oct 20 |
| Atchison, KS | 20 mi | Apr 11 | Oct 29 |
| Gladstone, MO | 21 mi | Apr 4 | Nov 2 |
| Shawnee, KS | 22 mi | Apr 16 | Oct 22 |
Frequently asked questions
When is the last frost in Leavenworth?
On average, the last spring frost (32°F) in Leavenworth is around April 12. In about 1 year in 10 it comes after April 25, and in 9 years in 10 it comes after March 31.
When is the first frost in Leavenworth?
The first fall frost (32°F) usually arrives around October 27. There’s a 10% chance of a freeze by October 13 and a 90% chance by November 7.
Can it frost in Leavenworth 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 21.
What growing zone is Leavenworth?
Leavenworth is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 66027. See growing zones in Kansas.
More: all Kansas frost dates · Kansas growing zones · UV index today in Leavenworth · frost vs. freeze