Frost dates for 80810Cheyenne Wells, CO
The average last spring frost in Cheyenne Wells is May 1 and the average first fall frost is October 14, giving a typical growing season of about 165 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 1
- Average first fall frost
- Oct 14
- Growing season
- 165 days
Safer after May 17 (1-in-10 risk)
Possible by Oct 1 (1-in-10 risk)
Last frost typically in 186 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) | Apr 28 · May 11 · May 26 | Sep 25 · Oct 5 · Oct 16 | 146 days | 100% |
| Frost / freeze (32°F) | Apr 18 · May 1 · May 17 | Oct 1 · Oct 14 · Oct 25 | 165 days | 100% |
| Hard freeze (28°F) | Apr 6 · Apr 22 · May 6 | Oct 8 · Oct 22 · Nov 3 | 183 days | 100% |
Planting calendar for Cheyenne Wells
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 | Mar 31 – Jun 6 |
| Tomatoes | Transplant outdoors | May 17 – Jun 24 |
| Peppers | Start seeds indoors | Mar 31 – May 1 |
| Peppers | Transplant outdoors | May 31 – Jul 1 |
| Eggplant | Start seeds indoors | Apr 17 – May 16 |
| Eggplant | Transplant outdoors | May 31 – Jul 1 |
| Cucumbers | Sow outdoors | May 31 – Jul 4 |
| Summer squash | Sow outdoors | May 17 – Jul 1 |
| Winter squash & pumpkins | Sow outdoors | May 31 – Jul 1 |
| Snap beans | Sow outdoors | May 17 – Jul 27 |
| Sweet corn | Sow outdoors | May 17 – Jun 24 |
| Watermelon & cantaloupe | Sow outdoors | May 31 – Jul 1 |
| Okra | Sow outdoors | May 24 – Jun 16 |
| Peas | Sow outdoors (spring) | Mar 31 – May 16 |
| Potatoes | Plant outdoors (spring) | Mar 31 – May 31 |
| Onions | Start seeds indoors (spring) | Feb 17 – Mar 16 |
| Onions | Transplant outdoors (spring) | Apr 17 – May 16 |
| Broccoli | Start seeds indoors (spring) | Mar 13 – Apr 16 |
| Broccoli | Transplant outdoors (spring) | Apr 17 – May 16 |
| Broccoli | Start seeds indoors (fall) | Jun 14 – Jun 24 |
| Broccoli | Transplant outdoors (fall) | Jul 14 – Jul 25 |
| Cabbage | Start seeds indoors (spring) | Mar 3 – Mar 31 |
| Cabbage | Transplant outdoors (spring) | Mar 31 – May 1 |
| Cabbage | Start seeds indoors (fall) | Jun 4 – Jul 4 |
| Cabbage | Transplant outdoors (fall) | Jul 4 – Aug 4 |
| Leaf lettuce | Sow outdoors (spring) | Mar 31 – Jun 16 |
| Leaf lettuce | Sow outdoors (fall) | Jul 4 – Aug 20 |
| Spinach | Sow outdoors (spring) | Mar 24 – May 7 |
| Spinach | Sow outdoors (fall) | Jul 21 – Aug 25 |
| Radishes | Sow outdoors (spring) | Mar 31 – May 21 |
| Radishes | Sow outdoors (fall) | Jul 4 – Sep 4 |
| Kale | Sow outdoors (spring) | Apr 17 – May 7 |
| Kale | Sow outdoors (fall) | Jun 27 – Aug 4 |
| Carrots | Sow outdoors (spring) | May 1 – Jun 16 |
| Carrots | Sow outdoors (fall) | Jun 4 – Jul 20 |
| Garlic | Plant outdoors (fall) | Oct 4 – Nov 4 |
Where these dates come from
ZIP code 80810 is matched to the NOAA station Cheyenne Wells 2Ne, CO, 4.7 km away, at 4,203 ft elevation (95 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cheyenne Wells 2Ne, CO (used) | 4,203 ft | May 1 | Oct 14 |
| Arapahoe 12S, CO | 4,065 ft | May 5 | Oct 9 |
| Arapahoe 14N, CO | 4,142 ft | May 9 | Oct 7 |
| Kit Carson 9Nne, CO | 4,346 ft | May 7 | Oct 6 |
Frost dates near Cheyenne Wells
- Arapahoe, CO 80802 · last May 5, first Oct 9
- Weskan, KS 67762 · last Apr 28, first Oct 15
- Sheridan Lake, CO 81071 · last Apr 27, first Oct 15
- Kit Carson, CO 80825 · last May 10, first Oct 1
- Eads, CO 81036 · last Apr 30, first Oct 13
- Sharon Springs, KS 67758 · last Apr 28, first Oct 15
- Burlington, CO 80807 · last May 6, first Oct 9
- Stratton, CO 80836 · last May 6, first Oct 9
Frequently asked questions
- When is the last frost in Cheyenne Wells, CO?
- For ZIP code 80810, the average last spring frost (32°F) is May 1, based on NOAA 1991-2020 climate normals for the Cheyenne Wells 2Ne, CO weather station. There is a 1-in-10 chance of a frost after May 17.
- When is the first frost in Cheyenne Wells, CO?
- The average first fall frost (32°F) is October 14. There is a 1-in-10 chance of frost by October 1, so tender plants are at risk from that point on.
- How long is the growing season in 80810?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 165 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.