Frost dates for ZIP 75071 (McKinney, TX)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Mckinney Municipal Airport, TX (4 miles away).
- Average last spring frostMar 1750% chance of a 32°F freeze after this date
- Average first fall frostNov 1550% chance of a 32°F freeze by this date
- Growing season (frost-free)241 daysmedian, 32°F threshold
- USDA hardiness zone8b15 to 20°F avg. coldest night
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Feb 27 |
| 50% (the "average" last frost) | Mar 17 |
| 10% (safe-side: only 1 year in 10 freezes later) | Apr 5 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 27 |
| 50% (the "average" first frost) | Nov 15 |
| 90% (late: most years have frozen by now) | Dec 5 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 31 | Nov 3 |
| 32°F (freeze) | Mar 17 | Nov 15 |
| 28°F (hard freeze) | Mar 4 | Nov 30 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
This week in McKinney
Soil temperature now
2-inch depth
67°F 55°F or warmer
24-hour average · latest 70°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Lake Ralph Hall (42 mi), Hooten (53 mi), Berkley Ranch (57 mi).
4-inch depth
70°F 55°F or warmer
24-hour average · latest 73°F, as of Oct 17, 7:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Mustang Special (18 mi), Lake Ralph Hall (42 mi), Hooten (53 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
No frost in the 7-day forecast.
| Period | High | Low | Forecast |
|---|---|---|---|
| Tonight | 42° | Clear | |
| Sunday | 70° | 47° | Sunny |
| Monday | 77° | 53° | Sunny |
| Tuesday | 80° | 55° | Sunny |
| Wednesday | 84° | 59° | Sunny |
| Thursday | 86° | 61° | Sunny |
| Friday | 87° | 64° | Mostly Sunny |
National Weather Service forecast, issued Oct 17, 8:28 PM CDT. Frost can form above 32°F on clear, calm nights. Full NWS forecast.
Free frost alerts for 75071
An email when the National Weather Service forecasts a freeze for this ZIP, plus the spring soil-temperature heads-up. At most a few a month.
Alerts open soon. This form is a preview and doesn't send anything yet.
Where these numbers come from
Station: Mckinney Municipal Airport, TX (NOAA GHCN-Daily ID USC00415766), elevation 586 ft, 4.5 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mckinney Muni AP, TX | 5 mi | Mar 18 | Nov 11 |
| Lavon Dam, TX | 17 mi | Mar 10 | Nov 19 |
| Richardson, TX | 18 mi | Mar 7 | Nov 21 |
The average last-frost dates of these stations span 11 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 75071?
The average (50% chance) last spring freeze of 32°F for ZIP 75071 is March 17. For a safer planting date, use April 5, when only 1 year in 10 still sees a later freeze.
When is the first frost in 75071?
The average first fall freeze is November 15. In 1 year in 10 it comes by October 27.
What hardiness zone is 75071?
ZIP 75071 is in USDA zone 8b (15 to 20°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Collin County
75002 75009 75013 75023 75024 75025 75034 75035 75069 75070 75072 75074 75075 75078 75082 75093 75094 75098 75164 75166 75173 75252 75287 75407 All Collin County ZIPs