Frost dates for 37357Morrison, TN
The average last spring frost in Morrison is April 13 and the average first fall frost is October 24, giving a typical growing season of about 192 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 13
- Average first fall frost
- Oct 24
- Growing season
- 192 days
Safer after Apr 30 (1-in-10 risk)
Possible by Oct 11 (1-in-10 risk)
Last frost typically in 161 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 11 · Apr 26 · May 11 | Oct 4 · Oct 15 · Oct 27 | 172 days | 100% |
| Frost / freeze (32°F) | Mar 27 · Apr 13 · Apr 30 | Oct 11 · Oct 24 · Nov 5 | 192 days | 100% |
| Hard freeze (28°F) | Mar 13 · Apr 1 · Apr 18 | Oct 19 · Nov 1 · Nov 15 | 214 days | 100% |
Planting calendar for Morrison
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 13 – May 19 |
| Tomatoes | Transplant outdoors | Apr 29 – Jul 4 |
| Peppers | Start seeds indoors | Mar 13 – Apr 13 |
| Peppers | Transplant outdoors | May 13 – Jun 13 |
| Eggplant | Start seeds indoors | Mar 30 – Apr 28 |
| Eggplant | Transplant outdoors | May 13 – Jun 13 |
| Cucumbers | Sow outdoors | May 13 – Jul 14 |
| Summer squash | Sow outdoors | Apr 29 – Jun 13 |
| Winter squash & pumpkins | Sow outdoors | May 13 – Jun 13 |
| Snap beans | Sow outdoors | Apr 29 – Aug 6 |
| Sweet corn | Sow outdoors | Apr 29 – Jul 4 |
| Watermelon & cantaloupe | Sow outdoors | May 13 – Jun 13 |
| Okra | Sow outdoors | May 6 – May 29 |
| Peas | Sow outdoors (spring) | Mar 13 – Apr 28 |
| Potatoes | Plant outdoors (spring) | Mar 13 – May 13 |
| Onions | Start seeds indoors (spring) | Jan 30 – Feb 26 |
| Onions | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (spring) | Feb 23 – Mar 29 |
| Broccoli | Transplant outdoors (spring) | Mar 30 – Apr 28 |
| Broccoli | Start seeds indoors (fall) | Jun 24 – Jul 4 |
| Broccoli | Transplant outdoors (fall) | Jul 24 – Aug 4 |
| Cabbage | Start seeds indoors (spring) | Feb 13 – Mar 13 |
| Cabbage | Transplant outdoors (spring) | Mar 13 – Apr 13 |
| Cabbage | Start seeds indoors (fall) | Jun 14 – Jul 14 |
| Cabbage | Transplant outdoors (fall) | Jul 14 – Aug 14 |
| Leaf lettuce | Sow outdoors (spring) | Mar 13 – May 29 |
| Leaf lettuce | Sow outdoors (fall) | Jul 14 – Aug 30 |
| Spinach | Sow outdoors (spring) | Mar 6 – Apr 19 |
| Spinach | Sow outdoors (fall) | Jul 31 – Sep 4 |
| Radishes | Sow outdoors (spring) | Mar 13 – May 3 |
| Radishes | Sow outdoors (fall) | Jul 14 – Sep 14 |
| Kale | Sow outdoors (spring) | Mar 30 – Apr 19 |
| Kale | Sow outdoors (fall) | Jul 7 – Aug 14 |
| Carrots | Sow outdoors (spring) | Apr 13 – May 29 |
| Carrots | Sow outdoors (fall) | Jun 14 – Jul 30 |
| Garlic | Plant outdoors (fall) | Oct 14 – Nov 14 |
Where these dates come from
ZIP code 37357 is matched to the NOAA station Manchester #2, TN, 18 km away, at 1,070 ft elevation (3 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Manchester #2, TN (used) | 1,070 ft | Apr 13 | Oct 24 |
| Mc Minnville, TN | 940 ft | Apr 7 | Oct 30 |
| Wartrace 6E, TN | 1,014 ft | Apr 1 | Nov 2 |
| Woodbury 1 Wnw, TN | 750 ft | Apr 17 | Oct 21 |
Frost dates near Morrison
- Summitville, TN 37382 · last Apr 13, first Oct 24
- Smartt, TN 37378 · last Apr 7, first Oct 30
- Viola, TN 37394 · last Apr 7, first Oct 30
- Mcminnville, TN 37110 · last Apr 7, first Oct 30
- Manchester, TN 37349 · last Apr 13, first Oct 24
- Arnold Afb, TN 37389 · last Apr 13, first Oct 24
- Bradyville, TN 37026 · last Apr 13, first Oct 24
- Altamont, TN 37301 · last Apr 21, first Oct 20
Frequently asked questions
- When is the last frost in Morrison, TN?
- For ZIP code 37357, the average last spring frost (32°F) is April 13, based on NOAA 1991-2020 climate normals for the Manchester #2, TN weather station. There is a 1-in-10 chance of a frost after April 30.
- When is the first frost in Morrison, TN?
- The average first fall frost (32°F) is October 24. There is a 1-in-10 chance of frost by October 11, so tender plants are at risk from that point on.
- How long is the growing season in 37357?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 192 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.