Ramona, SD frost dates
Last spring frostMay 5median date
First fall frostSep 30median date
Growing season148 daysfrost-free
Hardiness zone4bZone 4b
How Ramona compares
- In 8 years out of 10, the last spring frost in Ramona falls between April 22 and May 18, a 26-day window. The first fall frost falls between September 18 and October 13.
- The median last frost is 1 day earlier than the South Dakota median of May 6.
- Its 148-day growing season is longer than 42% of the 363 South Dakota places with a regular frost season (state median 149 days).
- The last frost is typical for zone 4b, where the median is May 8.
- The weather station records an average of 170 nights a year at or below 32°F.
- Compared with Sioux Falls, SD, 71 km away, the last frost here is 9 days later than there and the growing season is 22 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 22 |
| 50% (median) | May 5 |
| 10% (safe for tender plants) | May 18 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 18 |
| 50% (median) | September 30 |
| 90% (late) | October 13 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Ramona, SD
Ramona, SD frost dates — last frost May 5, first frost Sep 30, zone 4b. whenisthelastfrost.com
Crop
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Start indoors: Feb 10 to Feb 24Transplant outside: Apr 7 to Apr 21
Start indoors: Feb 24 to Mar 10Transplant outside: May 19 to Jun 2
Start indoors: Feb 24 to Mar 10Transplant outside: May 19 to Jun 2
Start indoors: Mar 10 to Mar 24Transplant outside: May 12 to May 26
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 14 to Apr 28Sow outdoors: Apr 7 to May 12Plant for fall: Aug 5 to Sep 2
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 7 to Apr 21Sow outdoors: Apr 7 to Apr 21Plant for fall: Jul 22 to Aug 12
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 21 to May 5Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 14 to Apr 28Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 10 to Mar 24Transplant outside: Apr 21 to May 5Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 24 to Apr 7Transplant outside: May 26 to Jun 9Sow outdoors: May 26 to Jun 9
Start indoors: Mar 24 to Apr 7Transplant outside: May 12 to May 26
Sow outdoors: Mar 24 to Apr 14Plant for fall: Jul 8 to Jul 29
Sow outdoors: Mar 24 to Apr 14Plant for fall: Aug 5 to Aug 26
Sow outdoors: Mar 31 to May 12Plant for fall: Aug 19 to Sep 9
Start indoors: Apr 7 to Apr 14Transplant outside: May 19 to May 26Sow outdoors: May 12 to May 26Plant for fall: Jul 15 to Jul 29
Start indoors: Apr 7 to Apr 14Sow outdoors: May 12 to May 26Plant for fall: Jul 22 to Aug 5
Start indoors: Apr 7 to Apr 14Sow outdoors: May 12 to May 26
Start indoors: Apr 7 to Apr 14Transplant outside: May 19 to Jun 2
Sow outdoors: Apr 14 to May 12Plant for fall: Jul 8 to Jul 22
Sow outdoors: Apr 14 to May 12Plant for fall: Jul 22 to Aug 5
Sow outdoors: Apr 14 to May 5
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 22 to Aug 5
Sow outdoors: Apr 21 to May 12Plant for fall: Aug 5 to Aug 26
Sow outdoors: May 12 to Jun 2Plant for fall: Jul 15 to Jul 29
Sow outdoors: May 12 to May 26
Transplant outside: May 19 to Jun 9
Plant for fall: Sep 16 to Oct 21
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Ramona, SD
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 10 – Feb 24 | Apr 7 – Apr 21 | — | — |
| Peppers | Feb 24 – Mar 10 | May 19 – Jun 2 | — | — |
| Eggplant | Feb 24 – Mar 10 | May 19 – Jun 2 | — | — |
| Tomatoes | Mar 10 – Mar 24 | May 12 – May 26 | — | — |
| Lettuce | Mar 10 – Mar 24 | Apr 14 – Apr 28 | Apr 7 – May 12 | Aug 5 – Sep 2 |
| Kale | Mar 10 – Mar 24 | Apr 7 – Apr 21 | Apr 7 – Apr 21 | Jul 22 – Aug 12 |
| Broccoli | Mar 10 – Mar 24 | Apr 21 – May 5 | — | Jun 24 – Jul 15 |
| Cabbage | Mar 10 – Mar 24 | Apr 14 – Apr 28 | — | Jun 24 – Jul 15 |
| Cauliflower | Mar 10 – Mar 24 | Apr 21 – May 5 | — | Jun 24 – Jul 15 |
| Okra | Mar 24 – Apr 7 | May 26 – Jun 9 | May 26 – Jun 9 | — |
| Basil | Mar 24 – Apr 7 | May 12 – May 26 | — | — |
| Peas | — | — | Mar 24 – Apr 14 | Jul 8 – Jul 29 |
| Spinach | — | — | Mar 24 – Apr 14 | Aug 5 – Aug 26 |
| Radishes | — | — | Mar 31 – May 12 | Aug 19 – Sep 9 |
| Cucumbers | Apr 7 – Apr 14 | May 19 – May 26 | May 12 – May 26 | Jul 15 – Jul 29 |
| Zucchini & Summer Squash | Apr 7 – Apr 14 | — | May 12 – May 26 | Jul 22 – Aug 5 |
| Winter Squash & Pumpkins | Apr 7 – Apr 14 | — | May 12 – May 26 | — |
| Melons & Watermelon | Apr 7 – Apr 14 | May 19 – Jun 2 | — | — |
| Carrots | — | — | Apr 14 – May 12 | Jul 8 – Jul 22 |
| Beets | — | — | Apr 14 – May 12 | Jul 22 – Aug 5 |
| Potatoes | — | — | Apr 14 – May 5 | — |
| Swiss Chard | — | — | Apr 21 – May 19 | Jul 22 – Aug 5 |
| Cilantro | — | — | Apr 21 – May 12 | Aug 5 – Aug 26 |
| Green Beans | — | — | May 12 – Jun 2 | Jul 15 – Jul 29 |
| Sweet Corn | — | — | May 12 – May 26 | — |
| Sweet Potatoes | — | May 19 – Jun 9 | — | — |
| Garlic | — | — | — | Sep 16 – Oct 21 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Madison 2se, SD weather station, 19 km away (elevation 1,644 ft (501 m)).
Frost dates near Ramona
- Oldham May 3 · Oct 2
- Madison May 5 · Sep 30
- Winfred May 6 · Oct 3
- Nunda May 2 · Oct 5
- Sinai May 3 · Oct 2
- Rutland May 2 · Oct 5
- Wentworth May 2 · Oct 5
- Howard May 5 · Oct 2
- Lake Preston May 5 · Oct 4
- Arlington May 3 · Oct 2
Frequently asked questions
When is the last frost in Ramona, SD?
The median last spring frost in Ramona, SD is May 5. There is still about a 10% chance of frost after May 18, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Ramona, SD?
The median first fall frost is September 30, with about a 10% chance of frost before September 18.
How long is the growing season in Ramona, SD?
About 148 days between the median last spring frost and first fall frost.
What planting zone is Ramona, SD?
Ramona, SD is in USDA hardiness zone 4b.