Frost dates for 80814Divide, CO
The average last spring frost in Divide is June 1 and the average first fall frost is September 21, giving a typical growing season of about 110 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 1
- Average first fall frost
- Sep 21
- Growing season
- 110 days
Safer after Jun 17 (1-in-10 risk)
Possible by Sep 7 (1-in-10 risk)
Last frost typically in 217 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) | Jun 2 · Jun 15 · Jul 2 | Aug 27 · Sep 10 · Sep 23 | 85 days | 100% |
| Frost / freeze (32°F) | May 22 · Jun 1 · Jun 17 | Sep 7 · Sep 21 · Oct 2 | 110 days | 100% |
| Hard freeze (28°F) | May 10 · May 21 · Jun 2 | Sep 17 · Sep 30 · Oct 14 | 130 days | 100% |
Planting calendar for Divide
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 | May 1 – Jul 7 |
| Tomatoes | Transplant outdoors | Jun 17 – Jun 1 |
| Peppers | Start seeds indoors | May 1 – Jun 1 |
| Peppers | Transplant outdoors | Jul 1 – Aug 1 |
| Eggplant | Start seeds indoors | May 18 – Jun 16 |
| Eggplant | Transplant outdoors | Jul 1 – Aug 1 |
| Cucumbers | Sow outdoors | Jul 1 – Jun 11 |
| Summer squash | Sow outdoors | Jun 17 – Aug 1 |
| Winter squash & pumpkins | Sow outdoors | Jul 1 – Aug 1 |
| Snap beans | Sow outdoors | Jun 17 – Jul 4 |
| Sweet corn | Sow outdoors | Jun 17 – Jun 1 |
| Watermelon & cantaloupe | Sow outdoors | Jul 1 – Aug 1 |
| Okra | Sow outdoors | Jun 24 – Jul 17 |
| Peas | Sow outdoors (spring) | May 1 – Jun 16 |
| Potatoes | Plant outdoors (spring) | May 1 – Jul 1 |
| Onions | Start seeds indoors (spring) | Mar 20 – Apr 16 |
| Onions | Transplant outdoors (spring) | May 18 – Jun 16 |
| Broccoli | Start seeds indoors (spring) | Apr 13 – May 17 |
| Broccoli | Transplant outdoors (spring) | May 18 – Jun 16 |
| Broccoli | Start seeds indoors (fall) | May 22 – Jun 1 |
| Broccoli | Transplant outdoors (fall) | Jun 21 – Jul 2 |
| Cabbage | Start seeds indoors (spring) | Apr 3 – May 1 |
| Cabbage | Transplant outdoors (spring) | May 1 – Jun 1 |
| Cabbage | Start seeds indoors (fall) | May 12 – Jun 11 |
| Cabbage | Transplant outdoors (fall) | Jun 11 – Jul 12 |
| Leaf lettuce | Sow outdoors (spring) | May 1 – Jul 17 |
| Leaf lettuce | Sow outdoors (fall) | Jun 11 – Jul 28 |
| Spinach | Sow outdoors (spring) | Apr 24 – Jun 7 |
| Spinach | Sow outdoors (fall) | Jun 28 – Aug 2 |
| Radishes | Sow outdoors (spring) | May 1 – Jun 21 |
| Radishes | Sow outdoors (fall) | Jun 11 – Aug 12 |
| Kale | Sow outdoors (spring) | May 18 – Jun 7 |
| Kale | Sow outdoors (fall) | Jun 4 – Jul 12 |
| Carrots | Sow outdoors (spring) | Jun 1 – Jul 17 |
| Carrots | Sow outdoors (fall) | May 12 – Jun 27 |
| Garlic | Plant outdoors (fall) | Sep 11 – Oct 12 |
Where these dates come from
ZIP code 80814 is matched to the NOAA station Divide 4Nw, CO, 1.5 km away, at 9,134 ft elevation (72 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Divide 4Nw, CO (used) | 9,134 ft | Jun 1 | Sep 21 |
| Florissant Fossil Bed, CO | 8,402 ft | — | — |
| Cripple Creek 3Nnw, CO | 9,235 ft | May 26 | Sep 26 |
| Ruxton Park, CO | 9,060 ft | Jun 3 | Sep 17 |
Frost dates near Divide
- Woodland Park, CO 80863 · last —, first —
- Florissant, CO 80816 · last —, first —
- Cripple Creek, CO 80813 · last May 26, first Sep 26
- Green Mountain Falls, CO 80819 · last —, first —
- Cascade, CO 80809 · last May 14, first Oct 1
- Lake George, CO 80827 · last Jun 2, first Sep 19
- Manitou Springs, CO 80829 · last May 3, first Oct 8
- Victor, CO 80860 · last May 26, first Sep 26
Frequently asked questions
- When is the last frost in Divide, CO?
- For ZIP code 80814, the average last spring frost (32°F) is June 1, based on NOAA 1991-2020 climate normals for the Divide 4Nw, CO weather station. There is a 1-in-10 chance of a frost after June 17.
- When is the first frost in Divide, CO?
- The average first fall frost (32°F) is September 21. There is a 1-in-10 chance of frost by September 7, so tender plants are at risk from that point on.
- How long is the growing season in 80814?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 110 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.