Frost dates for 57758Mud Butte, SD
The average last spring frost in Mud Butte is May 11 and the average first fall frost is September 28, giving a typical growing season of about 137 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 11
- Average first fall frost
- Sep 28
- Growing season
- 137 days
Safer after May 27 (1-in-10 risk)
Possible by Sep 12 (1-in-10 risk)
Last frost typically in 189 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 10 · May 21 · Jun 4 | Sep 7 · Sep 20 · Oct 3 | 120 days | 100% |
| Frost / freeze (32°F) | Apr 30 · May 11 · May 27 | Sep 12 · Sep 28 · Oct 10 | 137 days | 100% |
| Hard freeze (28°F) | Apr 17 · May 1 · May 16 | Sep 20 · Oct 4 · Oct 17 | 155 days | 100% |
Planting calendar for Mud Butte
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 10 – Jun 16 |
| Tomatoes | Transplant outdoors | May 27 – Jun 8 |
| Peppers | Start seeds indoors | Apr 10 – May 11 |
| Peppers | Transplant outdoors | Jun 10 – Jul 11 |
| Eggplant | Start seeds indoors | Apr 27 – May 26 |
| Eggplant | Transplant outdoors | Jun 10 – Jul 11 |
| Cucumbers | Sow outdoors | Jun 10 – Jun 18 |
| Summer squash | Sow outdoors | May 27 – Jul 11 |
| Winter squash & pumpkins | Sow outdoors | Jun 10 – Jul 11 |
| Snap beans | Sow outdoors | May 27 – Jul 11 |
| Sweet corn | Sow outdoors | May 27 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 10 – Jul 11 |
| Okra | Sow outdoors | Jun 3 – Jun 26 |
| Peas | Sow outdoors (spring) | Apr 10 – May 26 |
| Potatoes | Plant outdoors (spring) | Apr 10 – Jun 10 |
| Onions | Start seeds indoors (spring) | Feb 27 – Mar 26 |
| Onions | Transplant outdoors (spring) | Apr 27 – May 26 |
| Broccoli | Start seeds indoors (spring) | Mar 23 – Apr 26 |
| Broccoli | Transplant outdoors (spring) | Apr 27 – May 26 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Mar 13 – Apr 10 |
| Cabbage | Transplant outdoors (spring) | Apr 10 – May 11 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 10 – Jun 26 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Apr 3 – May 17 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 10 – May 31 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | Apr 27 – May 17 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 11 – Jun 26 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 57758 is matched to the NOAA station Zeona 10 Ssw, SD, 15.6 km away, at 2,730 ft elevation (42 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Zeona 10 Ssw, SD (used) | 2,730 ft | May 11 | Sep 28 |
| Maurine 12Sw, SD | 2,629 ft | May 13 | Sep 28 |
| Hoover, SD | 2,773 ft | May 19 | Sep 21 |
| Red Owl, SD | 2,773 ft | May 16 | Sep 26 |
Frost dates near Mud Butte
- Union Center, SD 57787 · last May 16, first Sep 26
- White Owl, SD 57792 · last May 16, first Sep 26
- Enning, SD 57737 · last May 16, first Sep 26
- Meadow, SD 57644 · last May 10, first Oct 1
- Newell, SD 57760 · last May 8, first Oct 1
- Reva, SD 57651 · last May 20, first Sep 19
- Faith, SD 57626 · last May 6, first Oct 5
- Bison, SD 57620 · last May 10, first Oct 1
Frequently asked questions
- When is the last frost in Mud Butte, SD?
- For ZIP code 57758, the average last spring frost (32°F) is May 11, based on NOAA 1991-2020 climate normals for the Zeona 10 Ssw, SD weather station. There is a 1-in-10 chance of a frost after May 27.
- When is the first frost in Mud Butte, SD?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 12, so tender plants are at risk from that point on.
- How long is the growing season in 57758?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 137 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.