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Colorado Springs, Colorado frost dates
Frost risk by date
| Chance of frost | Spring: frost after | Fall: frost before |
|---|---|---|
| 90% | April 22 | October 19 |
| 70% | April 30 | October 13 |
| 50% | May 3 | October 8 |
| 30% | May 8 | October 3 |
| 10% | May 15 | September 26 |
Read the spring column like this: there is a 10% chance of a 32°F freeze after May 15. These are NOAA probabilities for the Colorado Springs Muni Airport weather station (USW00093037, elevation 1884 m), 1991–2020.
Colorado Springs vegetable planting calendar
Dates count from the 50% last-frost date (May 3). For tomatoes, peppers and other frost-tender crops, waiting until the 10% date (May 15) is the cautious choice.
| Crop | Start seeds indoors | Plant out |
|---|---|---|
| Beans | Apr 12 | May 10 (usually sown directly in the garden) |
| Broccoli | Feb 22 | Apr 5 |
| Brussels sprouts | Feb 22 | Apr 5 |
| Cabbage | Feb 15 | Mar 29 |
| Cauliflower | Mar 8 | Apr 19 |
| Sweet corn | Apr 5 | May 3 (usually sown directly in the garden) |
| Cucumbers | Apr 19 | May 10 |
| Kale | Feb 15 | Mar 29 |
| Leeks | Jan 18 | Mar 29 |
| Lettuce | Mar 15 | Apr 19 |
| Melons | Apr 26 | May 17 |
| Onions | Jan 11 | Mar 22 (from seed; sets and transplants go out at the same time) |
| Peas | Mar 8 | Apr 5 (usually sown directly in the garden) |
| Peppers | Mar 22 | May 17 |
| Squash | Apr 26 | May 17 |
| Tomatoes | Mar 8 | May 3 |
Offsets from Oregon State University Extension's seed-starting table. "Plant out" means transplant, or sow directly for crops usually grown from seed.
Fall frost and season extension
The first fall freeze usually arrives around October 8. There's a 1-in-10 chance it comes before September 26. Harvest tender crops such as basil, tomatoes, peppers and squash before then, or cover them on cold nights. Cool-season crops like kale, cabbage and Brussels sprouts handle light frost, and often taste sweeter after it. A hard freeze (28°F) typically comes around October 16.
Nearby cities
| City | Last frost (50%) | First frost (50%) | Distance |
|---|---|---|---|
| Pueblo, CO | Apr 30 | Oct 9 | ~60 km |
| Denver, CO | May 5 | Oct 9 | ~114 km |
| Cheyenne, WY | May 12 | Oct 1 | ~260 km |
| Grand Junction, CO | Apr 28 | Oct 16 | ~335 km |
| Santa Fe, NM | May 4 | Oct 15 | ~375 km |
| Albuquerque, NM | Apr 6 | Nov 3 | ~450 km |
More: all Colorado frost dates