Frost dates for 38027Collierville, TN
The average last spring frost in Collierville is March 22 and the average first fall frost is November 7, giving a typical growing season of about 230 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 22
- Average first fall frost
- Nov 7
- Growing season
- 230 days
Safer after Apr 9 (1-in-10 risk)
Possible by Oct 26 (1-in-10 risk)
First frost typically in 4 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Mar 18 · Apr 4 · Apr 20 | Oct 15 · Oct 28 · Nov 10 | 207 days | 100% |
| Frost / freeze (32°F) | Mar 5 · Mar 22 · Apr 9 | Oct 26 · Nov 7 · Nov 23 | 230 days | 100% |
| Hard freeze (28°F) | Feb 20 · Mar 8 · Mar 28 | Nov 3 · Nov 18 · Dec 8 | 255 days | 100% |
Planting calendar for Collierville
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Feb 19 – Apr 27 |
| Tomatoes | Transplant outdoors | Apr 7 – Jul 18 |
| Peppers | Start seeds indoors | Feb 19 – Mar 22 |
| Peppers | Transplant outdoors | Apr 21 – May 22 |
| Eggplant | Start seeds indoors | Mar 8 – Apr 6 |
| Eggplant | Transplant outdoors | Apr 21 – May 22 |
| Cucumbers | Sow outdoors | Apr 21 – Jul 28 |
| Summer squash | Sow outdoors | Apr 7 – May 22 |
| Winter squash & pumpkins | Sow outdoors | Apr 21 – May 22 |
| Snap beans | Sow outdoors | Apr 7 – Aug 20 |
| Sweet corn | Sow outdoors | Apr 7 – Jul 18 |
| Watermelon & cantaloupe | Sow outdoors | Apr 21 – May 22 |
| Okra | Sow outdoors | Apr 14 – May 7 |
| Peas | Sow outdoors (spring) | Feb 19 – Apr 6 |
| Potatoes | Plant outdoors (spring) | Feb 19 – Apr 21 |
| Onions | Start seeds indoors (spring) | Jan 8 – Feb 4 |
| Onions | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (spring) | Feb 1 – Mar 7 |
| Broccoli | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (fall) | Jul 8 – Jul 18 |
| Broccoli | Transplant outdoors (fall) | Aug 7 – Aug 18 |
| Cabbage | Start seeds indoors (spring) | Jan 22 – Feb 19 |
| Cabbage | Transplant outdoors (spring) | Feb 19 – Mar 22 |
| Cabbage | Start seeds indoors (fall) | Jun 28 – Jul 28 |
| Cabbage | Transplant outdoors (fall) | Jul 28 – Aug 28 |
| Leaf lettuce | Sow outdoors (spring) | Feb 19 – May 7 |
| Leaf lettuce | Sow outdoors (fall) | Jul 28 – Sep 13 |
| Spinach | Sow outdoors (spring) | Feb 12 – Mar 28 |
| Spinach | Sow outdoors (fall) | Aug 14 – Sep 18 |
| Radishes | Sow outdoors (spring) | Feb 19 – Apr 11 |
| Radishes | Sow outdoors (fall) | Jul 28 – Sep 28 |
| Kale | Sow outdoors (spring) | Mar 8 – Mar 28 |
| Kale | Sow outdoors (fall) | Jul 21 – Aug 28 |
| Carrots | Sow outdoors (spring) | Mar 22 – May 7 |
| Carrots | Sow outdoors (fall) | Jun 28 – Aug 13 |
| Garlic | Plant outdoors (fall) | Oct 28 – Nov 28 |
Where these dates come from
ZIP code 38027 is matched to the NOAA station Germantown 4Se, TN, 8.1 km away, at 320 ft elevation (61 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Germantown 4Se, TN (used) | 320 ft | Mar 22 | Nov 7 |
| Collierville, TN | 300 ft | Mar 29 | Nov 3 |
| Memphis Wfo, TN | 310 ft | Mar 29 | Nov 5 |
| Olive Branch, MS | 385 ft | Mar 26 | Nov 6 |
Frost dates near Collierville
- Collierville, TN 38017 · last Mar 22, first Nov 7
- Rossville, TN 38066 · last Mar 29, first Nov 3
- Germantown, TN 38139 · last Mar 22, first Nov 7
- Eads, TN 38028 · last Mar 22, first Nov 7
- Memphis, TN 38125 · last Mar 22, first Nov 7
- Mount Pleasant, MS 38649 · last Apr 6, first Oct 26
- Cordova, TN 38018 · last Mar 29, first Nov 5
- Byhalia, MS 38611 · last Mar 22, first Nov 7
Frequently asked questions
- When is the last frost in Collierville, TN?
- For ZIP code 38027, the average last spring frost (32°F) is March 22, based on NOAA 1991-2020 climate normals for the Germantown 4Se, TN weather station. There is a 1-in-10 chance of a frost after April 9.
- When is the first frost in Collierville, TN?
- The average first fall frost (32°F) is November 7. There is a 1-in-10 chance of frost by October 26, so tender plants are at risk from that point on.
- How long is the growing season in 38027?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 230 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.