Frost dates for 86017Munds Park, AZ
The average last spring frost in Munds Park is June 10 and the average first fall frost is September 27, giving a typical growing season of about 106 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 10
- Average first fall frost
- Sep 27
- Growing season
- 106 days
Safer after Jun 27 (1-in-10 risk)
Possible by Sep 14 (1-in-10 risk)
Last frost typically in 226 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 11 · Jun 24 · Jul 8 | Sep 5 · Sep 17 · Sep 27 | 83 days | 100% |
| Frost / freeze (32°F) | May 26 · Jun 10 · Jun 27 | Sep 14 · Sep 27 · Oct 8 | 106 days | 100% |
| Hard freeze (28°F) | May 5 · May 26 · Jun 12 | Sep 26 · Oct 7 · Oct 22 | 133 days | 100% |
Planting calendar for Munds Park
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 10 – Jul 16 |
| Tomatoes | Transplant outdoors | Jun 26 – Jun 7 |
| Peppers | Start seeds indoors | May 10 – Jun 10 |
| Peppers | Transplant outdoors | Jul 10 – Aug 10 |
| Eggplant | Start seeds indoors | May 27 – Jun 25 |
| Eggplant | Transplant outdoors | Jul 10 – Aug 10 |
| Cucumbers | Sow outdoors | Jul 10 – Jun 17 |
| Summer squash | Sow outdoors | Jun 26 – Aug 10 |
| Winter squash & pumpkins | Sow outdoors | Jul 10 – Aug 10 |
| Snap beans | Sow outdoors | Jun 26 – Jul 10 |
| Sweet corn | Sow outdoors | Jun 26 – Jun 7 |
| Watermelon & cantaloupe | Sow outdoors | Jul 10 – Aug 10 |
| Okra | Sow outdoors | Jul 3 – Jul 26 |
| Peas | Sow outdoors (spring) | May 10 – Jun 25 |
| Potatoes | Plant outdoors (spring) | May 10 – Jul 10 |
| Onions | Start seeds indoors (spring) | Mar 29 – Apr 25 |
| Onions | Transplant outdoors (spring) | May 27 – Jun 25 |
| Broccoli | Start seeds indoors (spring) | Apr 22 – May 26 |
| Broccoli | Transplant outdoors (spring) | May 27 – Jun 25 |
| Broccoli | Start seeds indoors (fall) | May 28 – Jun 7 |
| Broccoli | Transplant outdoors (fall) | Jun 27 – Jul 8 |
| Cabbage | Start seeds indoors (spring) | Apr 12 – May 10 |
| Cabbage | Transplant outdoors (spring) | May 10 – Jun 10 |
| Cabbage | Start seeds indoors (fall) | May 18 – Jun 17 |
| Cabbage | Transplant outdoors (fall) | Jun 17 – Jul 18 |
| Leaf lettuce | Sow outdoors (spring) | May 10 – Jul 26 |
| Leaf lettuce | Sow outdoors (fall) | Jun 17 – Aug 3 |
| Spinach | Sow outdoors (spring) | May 3 – Jun 16 |
| Spinach | Sow outdoors (fall) | Jul 4 – Aug 8 |
| Radishes | Sow outdoors (spring) | May 10 – Jun 30 |
| Radishes | Sow outdoors (fall) | Jun 17 – Aug 18 |
| Kale | Sow outdoors (spring) | May 27 – Jun 16 |
| Kale | Sow outdoors (fall) | Jun 10 – Jul 18 |
| Carrots | Sow outdoors (spring) | Jun 10 – Jul 26 |
| Carrots | Sow outdoors (fall) | May 18 – Jul 3 |
| Garlic | Plant outdoors (fall) | Sep 17 – Oct 18 |
Where these dates come from
ZIP code 86017 is matched to the NOAA station Mund'S Park, AZ, 0.6 km away, at 6,470 ft elevation (16 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Mund'S Park, AZ (used) | 6,470 ft | Jun 10 | Sep 27 |
| Oak Creek Canyon, AZ | 5,118 ft | Apr 14 | Nov 5 |
| Sedona, AZ | 4,220 ft | Apr 1 | Nov 17 |
| Flagstaff Pulliam Ap, AZ | 7,003 ft | Jun 4 | Sep 28 |
Frost dates near Munds Park
- Sedona, AZ 86339 · last Apr 1, first Nov 17
- Mormon Lake, AZ 86038 · last Jun 1, first Oct 3
- Flagstaff, AZ 86005 · last Jun 4, first Sep 28
- Cornville, AZ 86325 · last Mar 30, first Nov 10
- Lake Montezuma, AZ 86342 · last Apr 16, first Oct 30
- Rimrock, AZ 86335 · last Apr 16, first Oct 30
- Bellemont, AZ 86015 · last Jun 21, first Sep 17
- Happy Jack, AZ 86024 · last May 31, first Oct 2
Frequently asked questions
- When is the last frost in Munds Park, AZ?
- For ZIP code 86017, the average last spring frost (32°F) is June 10, based on NOAA 1991-2020 climate normals for the Mund'S Park, AZ weather station. There is a 1-in-10 chance of a frost after June 27.
- When is the first frost in Munds Park, AZ?
- The average first fall frost (32°F) is September 27. There is a 1-in-10 chance of frost by September 14, so tender plants are at risk from that point on.
- How long is the growing season in 86017?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 106 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.