Frost dates for ZIP 78613 (Cedar Park, 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, Austin Great Hills, TX (7 miles away).
- Average last spring frostMar 1150% chance of a 32°F freeze after this date
- Average first fall frostNov 2050% chance of a 32°F freeze by this date
- Growing season (frost-free)254 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°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 22 |
| 50% (the "average" last frost) | Mar 11 |
| 10% (safe-side: only 1 year in 10 freezes later) | Mar 29 |
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) | Nov 3 |
| 50% (the "average" first frost) | Nov 20 |
| 90% (late: most years have frozen by now) | Dec 9 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 25 | Nov 10 |
| 32°F (freeze) | Mar 11 | Nov 20 |
| 28°F (hard freeze) | Mar 1 | Dec 3 |
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 Cedar Park
Soil temperature now
2-inch depth
70°F 55°F or warmer
24-hour average · latest 75°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Texas State University Round Rock, 11 mi away. Daily averages: Thu 83°, Fri 76°.
4-inch depth
72°F 55°F or warmer
24-hour average · latest 75°F, as of Oct 17, 7:00 PM CDT
Measured at TexMesonet (TWDB) station Texas State University Round Rock, 11 mi away. Daily averages: Thu 83°, Fri 78°.
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 | 46° | Mostly Clear | |
| Sunday | 72° | 50° | Sunny |
| Monday | 76° | 55° | Mostly Sunny |
| Tuesday | 81° | 57° | Sunny |
| Wednesday | 84° | 58° | Sunny |
| Thursday | 87° | 59° | Sunny |
| Friday | 86° | 61° | 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 78613
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: Austin Great Hills, TX (NOAA GHCN-Daily ID USC00410433), elevation 880 ft, 7.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Georgetown Lake, TX | 13 mi | Mar 6 | Nov 24 |
| Austin-camp Mabry, TX | 13 mi | Feb 20 | Dec 3 |
| Austin 33 NW, TX | 18 mi | Mar 2 | Nov 29 |
The average last-frost dates of these stations span 22 days, a rough guide to local variation. See data sources & methods.
Questions
When is the last frost in 78613?
The average (50% chance) last spring freeze of 32°F for ZIP 78613 is March 11. For a safer planting date, use March 29, when only 1 year in 10 still sees a later freeze.
When is the first frost in 78613?
The average first fall freeze is November 20. In 1 year in 10 it comes by November 3.
What hardiness zone is 78613?
ZIP 78613 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
Other ZIP codes in Williamson County
76527 76530 76537 76573 76574 76578 78615 78626 78628 78633 78634 78642 78664 78665 78674 78681 78717 78729 All Williamson County ZIPs