Frost dates for 85933Overgaard, AZ
The average last spring frost in Overgaard is May 23 and the average first fall frost is October 5, giving a typical growing season of about 135 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 23
- Average first fall frost
- Oct 5
- Growing season
- 135 days
Safer after Jun 6 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 208 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 22 · Jun 3 · Jun 18 | Sep 16 · Sep 27 · Oct 9 | 115 days | 100% |
| Frost / freeze (32°F) | May 6 · May 23 · Jun 6 | Sep 24 · Oct 5 · Oct 19 | 135 days | 100% |
| Hard freeze (28°F) | Apr 23 · May 8 · May 28 | Oct 1 · Oct 16 · Nov 1 | 159 days | 100% |
Planting calendar for Overgaard
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 22 – Jun 28 |
| Tomatoes | Transplant outdoors | Jun 8 – Jun 15 |
| Peppers | Start seeds indoors | Apr 22 – May 23 |
| Peppers | Transplant outdoors | Jun 22 – Jul 23 |
| Eggplant | Start seeds indoors | May 9 – Jun 7 |
| Eggplant | Transplant outdoors | Jun 22 – Jul 23 |
| Cucumbers | Sow outdoors | Jun 22 – Jun 25 |
| Summer squash | Sow outdoors | Jun 8 – Jul 23 |
| Winter squash & pumpkins | Sow outdoors | Jun 22 – Jul 23 |
| Snap beans | Sow outdoors | Jun 8 – Jul 18 |
| Sweet corn | Sow outdoors | Jun 8 – Jun 15 |
| Watermelon & cantaloupe | Sow outdoors | Jun 22 – Jul 23 |
| Okra | Sow outdoors | Jun 15 – Jul 8 |
| Peas | Sow outdoors (spring) | Apr 22 – Jun 7 |
| Potatoes | Plant outdoors (spring) | Apr 22 – Jun 22 |
| Onions | Start seeds indoors (spring) | Mar 11 – Apr 7 |
| Onions | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (spring) | Apr 4 – May 8 |
| Broccoli | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (fall) | Jun 5 – Jun 15 |
| Broccoli | Transplant outdoors (fall) | Jul 5 – Jul 16 |
| Cabbage | Start seeds indoors (spring) | Mar 25 – Apr 22 |
| Cabbage | Transplant outdoors (spring) | Apr 22 – May 23 |
| Cabbage | Start seeds indoors (fall) | May 26 – Jun 25 |
| Cabbage | Transplant outdoors (fall) | Jun 25 – Jul 26 |
| Leaf lettuce | Sow outdoors (spring) | Apr 22 – Jul 8 |
| Leaf lettuce | Sow outdoors (fall) | Jun 25 – Aug 11 |
| Spinach | Sow outdoors (spring) | Apr 15 – May 29 |
| Spinach | Sow outdoors (fall) | Jul 12 – Aug 16 |
| Radishes | Sow outdoors (spring) | Apr 22 – Jun 12 |
| Radishes | Sow outdoors (fall) | Jun 25 – Aug 26 |
| Kale | Sow outdoors (spring) | May 9 – May 29 |
| Kale | Sow outdoors (fall) | Jun 18 – Jul 26 |
| Carrots | Sow outdoors (spring) | May 23 – Jul 8 |
| Carrots | Sow outdoors (fall) | May 26 – Jul 11 |
| Garlic | Plant outdoors (fall) | Sep 25 – Oct 26 |
Where these dates come from
ZIP code 85933 is matched to the NOAA station Heber (Black Mesa) Rs, AZ, 1.8 km away, at 6,590 ft elevation (67 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Heber (Black Mesa) Rs, AZ (used) | 6,590 ft | May 23 | Oct 5 |
| Snowflake, AZ | 5,642 ft | May 11 | Oct 10 |
| Pleasant Valley, AZ | 5,183 ft | May 6 | Oct 20 |
| Show Low Ap, AZ | 6,411 ft | May 5 | Oct 15 |
Frost dates near Overgaard
- Heber, AZ 85928 · last May 23, first Oct 5
- Clay Springs, AZ 85923 · last May 5, first Oct 15
- Forest Lakes, AZ 85931 · last May 31, first Oct 2
- Pinedale, AZ 85934 · last May 5, first Oct 15
- White Mountain Lake, AZ 85912 · last May 5, first Oct 15
- Cibecue, AZ 85911 · last May 6, first Oct 20
- Taylor, AZ 85939 · last May 11, first Oct 10
- Snowflake, AZ 85937 · last May 11, first Oct 10
Frequently asked questions
- When is the last frost in Overgaard, AZ?
- For ZIP code 85933, the average last spring frost (32°F) is May 23, based on NOAA 1991-2020 climate normals for the Heber (Black Mesa) Rs, AZ weather station. There is a 1-in-10 chance of a frost after June 6.
- When is the first frost in Overgaard, AZ?
- The average first fall frost (32°F) is October 5. There is a 1-in-10 chance of frost by September 24, so tender plants are at risk from that point on.
- How long is the growing season in 85933?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 135 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.