Frost dates for 84718Cannonville, UT
The average last spring frost in Cannonville is May 31 and the average first fall frost is September 28, giving a typical growing season of about 116 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 31
- Average first fall frost
- Sep 28
- Growing season
- 116 days
Safer after Jun 18 (1-in-10 risk)
Possible by Sep 15 (1-in-10 risk)
Last frost typically in 212 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 1 · Jun 15 · Jun 30 | Sep 4 · Sep 18 · Sep 30 | 92 days | 100% |
| Frost / freeze (32°F) | May 13 · May 31 · Jun 18 | Sep 15 · Sep 28 · Oct 9 | 116 days | 100% |
| Hard freeze (28°F) | Apr 28 · May 15 · Jun 5 | Sep 24 · Oct 5 · Oct 20 | 142 days | 100% |
Planting calendar for Cannonville
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 30 – Jul 6 |
| Tomatoes | Transplant outdoors | Jun 16 – Jun 8 |
| Peppers | Start seeds indoors | Apr 30 – May 31 |
| Peppers | Transplant outdoors | Jun 30 – Jul 31 |
| Eggplant | Start seeds indoors | May 17 – Jun 15 |
| Eggplant | Transplant outdoors | Jun 30 – Jul 31 |
| Cucumbers | Sow outdoors | Jun 30 – Jun 18 |
| Summer squash | Sow outdoors | Jun 16 – Jul 31 |
| Winter squash & pumpkins | Sow outdoors | Jun 30 – Jul 31 |
| Snap beans | Sow outdoors | Jun 16 – Jul 11 |
| Sweet corn | Sow outdoors | Jun 16 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 30 – Jul 31 |
| Okra | Sow outdoors | Jun 23 – Jul 16 |
| Peas | Sow outdoors (spring) | Apr 30 – Jun 15 |
| Potatoes | Plant outdoors (spring) | Apr 30 – Jun 30 |
| Onions | Start seeds indoors (spring) | Mar 19 – Apr 15 |
| Onions | Transplant outdoors (spring) | May 17 – Jun 15 |
| Broccoli | Start seeds indoors (spring) | Apr 12 – May 16 |
| Broccoli | Transplant outdoors (spring) | May 17 – Jun 15 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Apr 2 – Apr 30 |
| Cabbage | Transplant outdoors (spring) | Apr 30 – May 31 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 30 – Jul 16 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Apr 23 – Jun 6 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 30 – Jun 20 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | May 17 – Jun 6 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 31 – Jul 16 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 84718 is matched to the NOAA station Kodachrome Basin Park, UT, 5.8 km away, at 5,805 ft elevation (57 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Kodachrome Basin Park, UT (used) | 5,805 ft | May 31 | Sep 28 |
| Bryce Canyon Np Hqrs, UT | 7,890 ft | May 23 | Sep 27 |
| Bryce Canyon Ap, UT | 7,586 ft | — | — |
| Hatch, UT | 6,893 ft | Jun 19 | Sep 13 |
Frost dates near Cannonville
- Henrieville, UT 84736 · last May 31, first Sep 28
- Tropic, UT 84776 · last May 31, first Sep 28
- Bryce, UT 84764 · last May 23, first Sep 27
- Hatch, UT 84735 · last Jun 19, first Sep 13
- Alton, UT 84710 · last Jun 1, first Sep 30
- Panguitch, UT 84759 · last Jun 12, first Sep 12
- Escalante, UT 84726 · last May 8, first Oct 10
- Duck Creek Village, UT 84762 · last Jun 21, first Sep 12
Frequently asked questions
- When is the last frost in Cannonville, UT?
- For ZIP code 84718, the average last spring frost (32°F) is May 31, based on NOAA 1991-2020 climate normals for the Kodachrome Basin Park, UT weather station. There is a 1-in-10 chance of a frost after June 18.
- When is the first frost in Cannonville, UT?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 15, so tender plants are at risk from that point on.
- How long is the growing season in 84718?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 116 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.