Frost dates for 38476Primm Springs, TN
The average last spring frost in Primm Springs is April 11 and the average first fall frost is October 24, giving a typical growing season of about 196 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 11
- Average first fall frost
- Oct 24
- Growing season
- 196 days
Safer after Apr 27 (1-in-10 risk)
Possible by Oct 12 (1-in-10 risk)
Last frost typically in 159 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) | Apr 5 · Apr 23 · May 10 | Oct 4 · Oct 16 · Oct 27 | 175 days | 100% |
| Frost / freeze (32°F) | Mar 22 · Apr 11 · Apr 27 | Oct 12 · Oct 24 · Nov 5 | 196 days | 100% |
| Hard freeze (28°F) | Mar 11 · Mar 31 · Apr 16 | Oct 22 · Nov 4 · Nov 21 | 219 days | 100% |
Planting calendar for Primm Springs
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 | Mar 11 – May 17 |
| Tomatoes | Transplant outdoors | Apr 27 – Jul 4 |
| Peppers | Start seeds indoors | Mar 11 – Apr 11 |
| Peppers | Transplant outdoors | May 11 – Jun 11 |
| Eggplant | Start seeds indoors | Mar 28 – Apr 26 |
| Eggplant | Transplant outdoors | May 11 – Jun 11 |
| Cucumbers | Sow outdoors | May 11 – Jul 14 |
| Summer squash | Sow outdoors | Apr 27 – Jun 11 |
| Winter squash & pumpkins | Sow outdoors | May 11 – Jun 11 |
| Snap beans | Sow outdoors | Apr 27 – Aug 6 |
| Sweet corn | Sow outdoors | Apr 27 – Jul 4 |
| Watermelon & cantaloupe | Sow outdoors | May 11 – Jun 11 |
| Okra | Sow outdoors | May 4 – May 27 |
| Peas | Sow outdoors (spring) | Mar 11 – Apr 26 |
| Potatoes | Plant outdoors (spring) | Mar 11 – May 11 |
| Onions | Start seeds indoors (spring) | Jan 28 – Feb 24 |
| Onions | Transplant outdoors (spring) | Mar 28 – Apr 26 |
| Broccoli | Start seeds indoors (spring) | Feb 21 – Mar 27 |
| Broccoli | Transplant outdoors (spring) | Mar 28 – Apr 26 |
| Broccoli | Start seeds indoors (fall) | Jun 24 – Jul 4 |
| Broccoli | Transplant outdoors (fall) | Jul 24 – Aug 4 |
| Cabbage | Start seeds indoors (spring) | Feb 11 – Mar 11 |
| Cabbage | Transplant outdoors (spring) | Mar 11 – Apr 11 |
| Cabbage | Start seeds indoors (fall) | Jun 14 – Jul 14 |
| Cabbage | Transplant outdoors (fall) | Jul 14 – Aug 14 |
| Leaf lettuce | Sow outdoors (spring) | Mar 11 – May 27 |
| Leaf lettuce | Sow outdoors (fall) | Jul 14 – Aug 30 |
| Spinach | Sow outdoors (spring) | Mar 4 – Apr 17 |
| Spinach | Sow outdoors (fall) | Jul 31 – Sep 4 |
| Radishes | Sow outdoors (spring) | Mar 11 – May 1 |
| Radishes | Sow outdoors (fall) | Jul 14 – Sep 14 |
| Kale | Sow outdoors (spring) | Mar 28 – Apr 17 |
| Kale | Sow outdoors (fall) | Jul 7 – Aug 14 |
| Carrots | Sow outdoors (spring) | Apr 11 – May 27 |
| Carrots | Sow outdoors (fall) | Jun 14 – Jul 30 |
| Garlic | Plant outdoors (fall) | Oct 14 – Nov 14 |
Where these dates come from
ZIP code 38476 is matched to the NOAA station Centerville Water Pl, TN, 16.8 km away, at 660 ft elevation (19 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Centerville Water Pl, TN (used) | 660 ft | Apr 11 | Oct 24 |
| Centerville 4Ne, TN | 740 ft | Apr 11 | Oct 27 |
| Fairview Bowie Nat Ctr, TN | 860 ft | Apr 7 | Oct 31 |
| Columbia 3 Wnw, TN | 650 ft | Apr 10 | Oct 27 |
Frost dates near Primm Springs
- Lyles, TN 37098 · last Apr 11, first Oct 27
- Santa Fe, TN 38482 · last Apr 10, first Oct 27
- Duck River, TN 38454 · last Apr 11, first Oct 24
- Bon Aqua, TN 37025 · last Apr 7, first Oct 31
- Williamsport, TN 38487 · last Apr 10, first Oct 27
- Centerville, TN 37033 · last Apr 11, first Oct 24
- Fairview, TN 37062 · last Apr 7, first Oct 31
- Nunnelly, TN 37137 · last Apr 11, first Oct 27
Frequently asked questions
- When is the last frost in Primm Springs, TN?
- For ZIP code 38476, the average last spring frost (32°F) is April 11, based on NOAA 1991-2020 climate normals for the Centerville Water Pl, TN weather station. There is a 1-in-10 chance of a frost after April 27.
- When is the first frost in Primm Springs, TN?
- The average first fall frost (32°F) is October 24. There is a 1-in-10 chance of frost by October 12, so tender plants are at risk from that point on.
- How long is the growing season in 38476?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 196 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.