Frost dates for 57576Vivian, SD
The average last spring frost in Vivian is May 12 and the average first fall frost is September 29, giving a typical growing season of about 140 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 12
- Average first fall frost
- Sep 29
- Growing season
- 140 days
Safer after May 28 (1-in-10 risk)
Possible by Sep 16 (1-in-10 risk)
Last frost typically in 191 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) | May 8 · May 22 · Jun 5 | Sep 8 · Sep 21 · Oct 3 | 121 days | 100% |
| Frost / freeze (32°F) | Apr 29 · May 12 · May 28 | Sep 16 · Sep 29 · Oct 12 | 140 days | 100% |
| Hard freeze (28°F) | Apr 18 · May 2 · May 16 | Sep 23 · Oct 7 · Oct 22 | 157 days | 100% |
Planting calendar for Vivian
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 | Apr 11 – Jun 17 |
| Tomatoes | Transplant outdoors | May 28 – Jun 9 |
| Peppers | Start seeds indoors | Apr 11 – May 12 |
| Peppers | Transplant outdoors | Jun 11 – Jul 12 |
| Eggplant | Start seeds indoors | Apr 28 – May 27 |
| Eggplant | Transplant outdoors | Jun 11 – Jul 12 |
| Cucumbers | Sow outdoors | Jun 11 – Jun 19 |
| Summer squash | Sow outdoors | May 28 – Jul 12 |
| Winter squash & pumpkins | Sow outdoors | Jun 11 – Jul 12 |
| Snap beans | Sow outdoors | May 28 – Jul 12 |
| Sweet corn | Sow outdoors | May 28 – Jun 9 |
| Watermelon & cantaloupe | Sow outdoors | Jun 11 – Jul 12 |
| Okra | Sow outdoors | Jun 4 – Jun 27 |
| Peas | Sow outdoors (spring) | Apr 11 – May 27 |
| Potatoes | Plant outdoors (spring) | Apr 11 – Jun 11 |
| Onions | Start seeds indoors (spring) | Feb 28 – Mar 27 |
| Onions | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (spring) | Mar 24 – Apr 27 |
| Broccoli | Transplant outdoors (spring) | Apr 28 – May 27 |
| Broccoli | Start seeds indoors (fall) | May 30 – Jun 9 |
| Broccoli | Transplant outdoors (fall) | Jun 29 – Jul 10 |
| Cabbage | Start seeds indoors (spring) | Mar 14 – Apr 11 |
| Cabbage | Transplant outdoors (spring) | Apr 11 – May 12 |
| Cabbage | Start seeds indoors (fall) | May 20 – Jun 19 |
| Cabbage | Transplant outdoors (fall) | Jun 19 – Jul 20 |
| Leaf lettuce | Sow outdoors (spring) | Apr 11 – Jun 27 |
| Leaf lettuce | Sow outdoors (fall) | Jun 19 – Aug 5 |
| Spinach | Sow outdoors (spring) | Apr 4 – May 18 |
| Spinach | Sow outdoors (fall) | Jul 6 – Aug 10 |
| Radishes | Sow outdoors (spring) | Apr 11 – Jun 1 |
| Radishes | Sow outdoors (fall) | Jun 19 – Aug 20 |
| Kale | Sow outdoors (spring) | Apr 28 – May 18 |
| Kale | Sow outdoors (fall) | Jun 12 – Jul 20 |
| Carrots | Sow outdoors (spring) | May 12 – Jun 27 |
| Carrots | Sow outdoors (fall) | May 20 – Jul 5 |
| Garlic | Plant outdoors (fall) | Sep 19 – Oct 20 |
Where these dates come from
ZIP code 57576 is matched to the NOAA station Presho 7 Nw, SD, 10.8 km away, at 1,810 ft elevation (139 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Presho 7 Nw, SD (used) | 1,810 ft | May 12 | Sep 29 |
| Pierre 24 S, SD | 2,124 ft | May 6 | Oct 7 |
| Murdo, SD | 2,316 ft | May 3 | Oct 9 |
| Kennebec, SD | 1,681 ft | May 12 | Sep 28 |
Frost dates near Vivian
- Presho, SD 57568 · last May 12, first Sep 29
- Draper, SD 57531 · last May 3, first Oct 9
- Murdo, SD 57559 · last May 3, first Oct 9
- Kennebec, SD 57544 · last May 12, first Sep 28
- Fort Pierre, SD 57532 · last May 6, first Oct 3
- Pierre, SD 57501 · last May 6, first Oct 3
- Wood, SD 57585 · last May 10, first Oct 1
- Okaton, SD 57562 · last May 3, first Oct 9
Frequently asked questions
- When is the last frost in Vivian, SD?
- For ZIP code 57576, the average last spring frost (32°F) is May 12, based on NOAA 1991-2020 climate normals for the Presho 7 Nw, SD weather station. There is a 1-in-10 chance of a frost after May 28.
- When is the first frost in Vivian, SD?
- The average first fall frost (32°F) is September 29. There is a 1-in-10 chance of frost by September 16, so tender plants are at risk from that point on.
- How long is the growing season in 57576?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 140 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.