Frost dates for 81023Beulah, CO
The average last spring frost in Beulah is May 6 and the average first fall frost is October 4, giving a typical growing season of about 149 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 6
- Average first fall frost
- Oct 4
- Growing season
- 149 days
Safer after May 20 (1-in-10 risk)
Possible by Sep 23 (1-in-10 risk)
Last frost typically in 191 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) | May 5 · May 18 · Jun 1 | Sep 15 · Sep 28 · Oct 9 | 131 days | 100% |
| Frost / freeze (32°F) | Apr 24 · May 6 · May 20 | Sep 23 · Oct 4 · Oct 17 | 149 days | 100% |
| Hard freeze (28°F) | Apr 14 · Apr 29 · May 9 | Oct 1 · Oct 15 · Oct 28 | 168 days | 100% |
Planting calendar for Beulah
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 | Apr 5 – Jun 11 |
| Tomatoes | Transplant outdoors | May 22 – Jun 14 |
| Peppers | Start seeds indoors | Apr 5 – May 6 |
| Peppers | Transplant outdoors | Jun 5 – Jul 6 |
| Eggplant | Start seeds indoors | Apr 22 – May 21 |
| Eggplant | Transplant outdoors | Jun 5 – Jul 6 |
| Cucumbers | Sow outdoors | Jun 5 – Jun 24 |
| Summer squash | Sow outdoors | May 22 – Jul 6 |
| Winter squash & pumpkins | Sow outdoors | Jun 5 – Jul 6 |
| Snap beans | Sow outdoors | May 22 – Jul 17 |
| Sweet corn | Sow outdoors | May 22 – Jun 14 |
| Watermelon & cantaloupe | Sow outdoors | Jun 5 – Jul 6 |
| Okra | Sow outdoors | May 29 – Jun 21 |
| Peas | Sow outdoors (spring) | Apr 5 – May 21 |
| Potatoes | Plant outdoors (spring) | Apr 5 – Jun 5 |
| Onions | Start seeds indoors (spring) | Feb 22 – Mar 21 |
| Onions | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (spring) | Mar 18 – Apr 21 |
| Broccoli | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (fall) | Jun 4 – Jun 14 |
| Broccoli | Transplant outdoors (fall) | Jul 4 – Jul 15 |
| Cabbage | Start seeds indoors (spring) | Mar 8 – Apr 5 |
| Cabbage | Transplant outdoors (spring) | Apr 5 – May 6 |
| Cabbage | Start seeds indoors (fall) | May 25 – Jun 24 |
| Cabbage | Transplant outdoors (fall) | Jun 24 – Jul 25 |
| Leaf lettuce | Sow outdoors (spring) | Apr 5 – Jun 21 |
| Leaf lettuce | Sow outdoors (fall) | Jun 24 – Aug 10 |
| Spinach | Sow outdoors (spring) | Mar 29 – May 12 |
| Spinach | Sow outdoors (fall) | Jul 11 – Aug 15 |
| Radishes | Sow outdoors (spring) | Apr 5 – May 26 |
| Radishes | Sow outdoors (fall) | Jun 24 – Aug 25 |
| Kale | Sow outdoors (spring) | Apr 22 – May 12 |
| Kale | Sow outdoors (fall) | Jun 17 – Jul 25 |
| Carrots | Sow outdoors (spring) | May 6 – Jun 21 |
| Carrots | Sow outdoors (fall) | May 25 – Jul 10 |
| Garlic | Plant outdoors (fall) | Sep 24 – Oct 25 |
Where these dates come from
ZIP code 81023 is matched to the NOAA station Walsenburg 1 Nw, CO, 52.8 km away, at 6,292 ft elevation (20 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Walsenburg 1 Nw, CO (used) | 6,292 ft | May 6 | Oct 4 |
| Rye 1Sw, CO | 7,141 ft | May 5 | Oct 10 |
| Pueblo Rsvr, CO | 4,861 ft | Apr 26 | Oct 13 |
| Westcliffe, CO | 7,873 ft | Jun 11 | Sep 9 |
Frost dates near Beulah
- Wetmore, CO 81253 · last Jun 11, first Sep 9
- Rye, CO 81069 · last May 5, first Oct 10
- Colorado City, CO 81019 · last May 6, first Oct 4
- Pueblo, CO 81005 · last Apr 26, first Oct 13
- Coal Creek, CO 81221 · last May 4, first Oct 7
- Rockvale, CO 81244 · last May 4, first Oct 7
- Florence, CO 81226 · last May 4, first Oct 7
- Gardner, CO 81040 · last May 5, first Oct 10
Frequently asked questions
- When is the last frost in Beulah, CO?
- For ZIP code 81023, the average last spring frost (32°F) is May 6, based on NOAA 1991-2020 climate normals for the Walsenburg 1 Nw, CO weather station. There is a 1-in-10 chance of a frost after May 20.
- When is the first frost in Beulah, CO?
- The average first fall frost (32°F) is October 4. There is a 1-in-10 chance of frost by September 23, so tender plants are at risk from that point on.
- How long is the growing season in 81023?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 149 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.