Norwood, CO frost dates
Last spring frostMay 21median date
First fall frostOct 1median date
Growing season133 daysfrost-free
Hardiness zone6aZone 6a
How Norwood compares
- In 8 years out of 10, the last spring frost in Norwood falls between May 7 and June 5, a 29-day window. The first fall frost falls between September 19 and October 12.
- The median last frost is 10 days later than the Colorado median of May 11.
- Its 133-day growing season is longer than 36% of the 374 Colorado places with a regular frost season (state median 146 days).
- The last frost is 22 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 187 nights a year at or below 32°F.
- Compared with Grand Junction, CO, 108 km away, the last frost here is 28 days later than there and the growing season is 47 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 7 |
| 50% (median) | May 21 |
| 10% (safe for tender plants) | June 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 19 |
| 50% (median) | October 1 |
| 90% (late) | October 12 |
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 Norwood, CO
Norwood, CO frost dates — last frost May 21, first frost Oct 1, zone 6a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Feb 26 to Mar 12Transplant outside: Apr 23 to May 7
Start indoors: Mar 12 to Mar 26Transplant outside: Jun 4 to Jun 18
Start indoors: Mar 12 to Mar 26Transplant outside: Jun 4 to Jun 18
Start indoors: Mar 26 to Apr 9Transplant outside: May 28 to Jun 11
Start indoors: Mar 26 to Apr 9Transplant outside: Apr 30 to May 14Sow outdoors: Apr 23 to May 28Plant for fall: Aug 6 to Sep 3
Start indoors: Mar 26 to Apr 9Transplant outside: Apr 23 to May 7Sow outdoors: Apr 23 to May 7Plant for fall: Jul 23 to Aug 13
Start indoors: Mar 26 to Apr 9Transplant outside: May 7 to May 21Plant for fall: Jun 25 to Jul 16
Start indoors: Mar 26 to Apr 9Transplant outside: Apr 30 to May 14Plant for fall: Jun 25 to Jul 16
Start indoors: Mar 26 to Apr 9Transplant outside: May 7 to May 21Plant for fall: Jun 25 to Jul 16
Start indoors: Apr 9 to Apr 23Transplant outside: Jun 11 to Jun 25Sow outdoors: Jun 11 to Jun 25
Start indoors: Apr 9 to Apr 23Transplant outside: May 28 to Jun 11
Sow outdoors: Apr 9 to Apr 30Plant for fall: Jul 9 to Jul 30
Sow outdoors: Apr 9 to Apr 30Plant for fall: Aug 6 to Aug 27
Sow outdoors: Apr 16 to May 28Plant for fall: Aug 20 to Sep 10
Start indoors: Apr 23 to Apr 30Transplant outside: Jun 4 to Jun 11Sow outdoors: May 28 to Jun 11Plant for fall: Jul 16 to Jul 30
Start indoors: Apr 23 to Apr 30Sow outdoors: May 28 to Jun 11Plant for fall: Jul 23 to Aug 6
Start indoors: Apr 23 to Apr 30Sow outdoors: May 28 to Jun 11
Start indoors: Apr 23 to Apr 30Transplant outside: Jun 4 to Jun 18
Sow outdoors: Apr 30 to May 28Plant for fall: Jul 9 to Jul 23
Sow outdoors: Apr 30 to May 28Plant for fall: Jul 23 to Aug 6
Sow outdoors: Apr 30 to May 21
Sow outdoors: May 7 to Jun 4Plant for fall: Jul 23 to Aug 6
Sow outdoors: May 7 to May 28Plant for fall: Aug 6 to Aug 27
Sow outdoors: May 28 to Jun 18Plant for fall: Jul 16 to Jul 30
Sow outdoors: May 28 to Jun 11
Transplant outside: Jun 4 to Jun 25
Plant for fall: Sep 17 to Oct 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Norwood, CO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 26 – Mar 12 | Apr 23 – May 7 | — | — |
| Peppers | Mar 12 – Mar 26 | Jun 4 – Jun 18 | — | — |
| Eggplant | Mar 12 – Mar 26 | Jun 4 – Jun 18 | — | — |
| Tomatoes | Mar 26 – Apr 9 | May 28 – Jun 11 | — | — |
| Lettuce | Mar 26 – Apr 9 | Apr 30 – May 14 | Apr 23 – May 28 | Aug 6 – Sep 3 |
| Kale | Mar 26 – Apr 9 | Apr 23 – May 7 | Apr 23 – May 7 | Jul 23 – Aug 13 |
| Broccoli | Mar 26 – Apr 9 | May 7 – May 21 | — | Jun 25 – Jul 16 |
| Cabbage | Mar 26 – Apr 9 | Apr 30 – May 14 | — | Jun 25 – Jul 16 |
| Cauliflower | Mar 26 – Apr 9 | May 7 – May 21 | — | Jun 25 – Jul 16 |
| Okra | Apr 9 – Apr 23 | Jun 11 – Jun 25 | Jun 11 – Jun 25 | — |
| Basil | Apr 9 – Apr 23 | May 28 – Jun 11 | — | — |
| Peas | — | — | Apr 9 – Apr 30 | Jul 9 – Jul 30 |
| Spinach | — | — | Apr 9 – Apr 30 | Aug 6 – Aug 27 |
| Radishes | — | — | Apr 16 – May 28 | Aug 20 – Sep 10 |
| Cucumbers | Apr 23 – Apr 30 | Jun 4 – Jun 11 | May 28 – Jun 11 | Jul 16 – Jul 30 |
| Zucchini & Summer Squash | Apr 23 – Apr 30 | — | May 28 – Jun 11 | Jul 23 – Aug 6 |
| Winter Squash & Pumpkins | Apr 23 – Apr 30 | — | May 28 – Jun 11 | — |
| Melons & Watermelon | Apr 23 – Apr 30 | Jun 4 – Jun 18 | — | — |
| Carrots | — | — | Apr 30 – May 28 | Jul 9 – Jul 23 |
| Beets | — | — | Apr 30 – May 28 | Jul 23 – Aug 6 |
| Potatoes | — | — | Apr 30 – May 21 | — |
| Swiss Chard | — | — | May 7 – Jun 4 | Jul 23 – Aug 6 |
| Cilantro | — | — | May 7 – May 28 | Aug 6 – Aug 27 |
| Green Beans | — | — | May 28 – Jun 18 | Jul 16 – Jul 30 |
| Sweet Corn | — | — | May 28 – Jun 11 | — |
| Sweet Potatoes | — | Jun 4 – Jun 25 | — | — |
| Garlic | — | — | — | Sep 17 – Oct 22 |
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 Norwood #2, CO weather station, 2 km away (elevation 7,011 ft (2,137 m)).
Frost dates near Norwood
- Redvale May 25 · Oct 1
- Placerville May 26 · Sep 29
- Naturita Apr 26 · Oct 18
- Nucla Apr 26 · Oct 18
- Telluride frost any month
- Ridgway Jun 11 · Sep 13
- Ophir frost any month
- Montrose Apr 28 · Oct 14
- Rico frost any month
- Ouray May 18 · Oct 4
Frequently asked questions
When is the last frost in Norwood, CO?
The median last spring frost in Norwood, CO is May 21. There is still about a 10% chance of frost after June 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Norwood, CO?
The median first fall frost is October 1, with about a 10% chance of frost before September 19.
How long is the growing season in Norwood, CO?
About 133 days between the median last spring frost and first fall frost.
What planting zone is Norwood, CO?
Norwood, CO is in USDA hardiness zone 6a.