Capulin, CO frost dates
Last spring frostJun 6median date
First fall frostSep 15median date
Growing season101 daysfrost-free
Hardiness zone5aZone 5a
How Capulin compares
- In 8 years out of 10, the last spring frost in Capulin falls between May 24 and June 22, a 29-day window. The first fall frost falls between September 3 and September 26.
- The median last frost is 26 days later than the Colorado median of May 11.
- Its 101-day growing season is longer than 13% of the 374 Colorado places with a regular frost season (state median 146 days).
- The last frost is 34 days later than the zone 5a median of May 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5a chart.
- The weather station records an average of 230 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 24 |
| 50% (median) | June 6 |
| 10% (safe for tender plants) | June 22 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 3 |
| 50% (median) | September 15 |
| 90% (late) | September 26 |
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 Capulin, CO
Capulin, CO frost dates — last frost Jun 6, first frost Sep 15, zone 5a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 14 to Mar 28Transplant outside: May 9 to May 23
Start indoors: Mar 28 to Apr 11Transplant outside: Jun 20 to Jul 4
Start indoors: Mar 28 to Apr 11Transplant outside: Jun 20 to Jul 4
Start indoors: Apr 11 to Apr 25Transplant outside: Jun 13 to Jun 27
Start indoors: Apr 11 to Apr 25Transplant outside: May 16 to May 30Sow outdoors: May 9 to Jun 13Plant for fall: Jul 21 to Aug 18
Start indoors: Apr 11 to Apr 25Transplant outside: May 9 to May 23Sow outdoors: May 9 to May 23Plant for fall: Jul 7 to Jul 28
Start indoors: Apr 11 to Apr 25Transplant outside: May 23 to Jun 6
Start indoors: Apr 11 to Apr 25Transplant outside: May 16 to May 30
Start indoors: Apr 11 to Apr 25Transplant outside: May 23 to Jun 6
Start indoors: Apr 25 to May 9Transplant outside: Jun 27 to Jul 11Sow outdoors: Jun 27 to Jul 11
Start indoors: Apr 25 to May 9Transplant outside: Jun 13 to Jun 27
Sow outdoors: Apr 25 to May 16Plant for fall: Jun 23 to Jul 14
Sow outdoors: Apr 25 to May 16Plant for fall: Jul 21 to Aug 11
Sow outdoors: May 2 to Jun 13Plant for fall: Aug 4 to Aug 25
Start indoors: May 9 to May 16Transplant outside: Jun 20 to Jun 27Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Sow outdoors: Jun 13 to Jun 27
Start indoors: May 9 to May 16Transplant outside: Jun 20 to Jul 4
Sow outdoors: May 16 to Jun 13
Sow outdoors: May 16 to Jun 13Plant for fall: Jul 7 to Jul 21
Sow outdoors: May 16 to Jun 6
Sow outdoors: May 23 to Jun 20Plant for fall: Jul 7 to Jul 21
Sow outdoors: May 23 to Jun 13Plant for fall: Jul 21 to Aug 11
Sow outdoors: Jun 13 to Jul 4
Sow outdoors: Jun 13 to Jun 27
Transplant outside: Jun 20 to Jul 11
Plant for fall: Sep 1 to Oct 6
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Capulin, CO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 14 – Mar 28 | May 9 – May 23 | — | — |
| Peppers | Mar 28 – Apr 11 | Jun 20 – Jul 4 | — | — |
| Eggplant | Mar 28 – Apr 11 | Jun 20 – Jul 4 | — | — |
| Tomatoes | Apr 11 – Apr 25 | Jun 13 – Jun 27 | — | — |
| Lettuce | Apr 11 – Apr 25 | May 16 – May 30 | May 9 – Jun 13 | Jul 21 – Aug 18 |
| Kale | Apr 11 – Apr 25 | May 9 – May 23 | May 9 – May 23 | Jul 7 – Jul 28 |
| Broccoli | Apr 11 – Apr 25 | May 23 – Jun 6 | — | — |
| Cabbage | Apr 11 – Apr 25 | May 16 – May 30 | — | — |
| Cauliflower | Apr 11 – Apr 25 | May 23 – Jun 6 | — | — |
| Okra | Apr 25 – May 9 | Jun 27 – Jul 11 | Jun 27 – Jul 11 | — |
| Basil | Apr 25 – May 9 | Jun 13 – Jun 27 | — | — |
| Peas | — | — | Apr 25 – May 16 | Jun 23 – Jul 14 |
| Spinach | — | — | Apr 25 – May 16 | Jul 21 – Aug 11 |
| Radishes | — | — | May 2 – Jun 13 | Aug 4 – Aug 25 |
| Cucumbers | May 9 – May 16 | Jun 20 – Jun 27 | Jun 13 – Jun 27 | — |
| Zucchini & Summer Squash | May 9 – May 16 | — | Jun 13 – Jun 27 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 101 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 9 – May 16 | — | Jun 13 – Jun 27 | — |
| Melons & Watermelon | May 9 – May 16 | Jun 20 – Jul 4 | — | — |
| Carrots | — | — | May 16 – Jun 13 | — |
| Beets | — | — | May 16 – Jun 13 | Jul 7 – Jul 21 |
| Potatoes | — | — | May 16 – Jun 6 | — |
| Swiss Chard | — | — | May 23 – Jun 20 | Jul 7 – Jul 21 |
| Cilantro | — | — | May 23 – Jun 13 | Jul 21 – Aug 11 |
| Green Beans | — | — | Jun 13 – Jul 4 | — |
| Sweet Corn | — | — | Jun 13 – Jun 27 | — |
| Sweet Potatoes Warning: Your frost-free season is about 101 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 20 – Jul 11 | — | — |
| Garlic | — | — | — | Sep 1 – Oct 6 |
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 Waverly 1w, CO weather station, 18 km away (elevation 7,602 ft (2,317 m)).
Frost dates near Capulin
- La Jara May 28 · Sep 21
- Romeo May 28 · Sep 21
- Sanford May 28 · Sep 21
- Manassa May 28 · Sep 21
- Conejos May 28 · Sep 21
- Antonito May 28 · Sep 21
- Alamosa May 30 · Sep 17
- Monte Vista Jun 11 · Sep 13
- Homelake Jun 11 · Sep 13
- Mosca May 30 · Sep 17
Frequently asked questions
When is the last frost in Capulin, CO?
The median last spring frost in Capulin, CO is June 6. There is still about a 10% chance of frost after June 22, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Capulin, CO?
The median first fall frost is September 15, with about a 10% chance of frost before September 3.
How long is the growing season in Capulin, CO?
About 101 days between the median last spring frost and first fall frost.
What planting zone is Capulin, CO?
Capulin, CO is in USDA hardiness zone 5a.