Frost dates for 83252Malad City, ID
The average last spring frost in Malad City is May 22 and the average first fall frost is September 20, giving a typical growing season of about 116 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 22
- Average first fall frost
- Sep 20
- Growing season
- 116 days
Safer after Jun 16 (1-in-10 risk)
Possible by Sep 4 (1-in-10 risk)
Last frost typically in 207 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) | — | — | 87 days | 100% |
| Frost / freeze (32°F) | May 6 · May 22 · Jun 16 | Sep 4 · Sep 20 · Oct 6 | 116 days | 100% |
| Hard freeze (28°F) | Apr 22 · May 4 · May 21 | Sep 14 · Oct 2 · Oct 19 | 150 days | 100% |
Planting calendar for Malad City
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 21 – Jun 27 |
| Tomatoes | Transplant outdoors | Jun 7 – May 31 |
| Peppers | Start seeds indoors | Apr 21 – May 22 |
| Peppers | Transplant outdoors | Jun 21 – Jul 22 |
| Eggplant | Start seeds indoors | May 8 – Jun 6 |
| Eggplant | Transplant outdoors | Jun 21 – Jul 22 |
| Cucumbers | Sow outdoors | Jun 21 – Jun 10 |
| Summer squash | Sow outdoors | Jun 7 – Jul 22 |
| Winter squash & pumpkins | Sow outdoors | Jun 21 – Jul 22 |
| Snap beans | Sow outdoors | Jun 7 – Jul 3 |
| Sweet corn | Sow outdoors | Jun 7 – May 31 |
| Watermelon & cantaloupe | Sow outdoors | Jun 21 – Jul 22 |
| Okra | Sow outdoors | Jun 14 – Jul 7 |
| Peas | Sow outdoors (spring) | Apr 21 – Jun 6 |
| Potatoes | Plant outdoors (spring) | Apr 21 – Jun 21 |
| Onions | Start seeds indoors (spring) | Mar 10 – Apr 6 |
| Onions | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (spring) | Apr 3 – May 7 |
| Broccoli | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (fall) | May 21 – May 31 |
| Broccoli | Transplant outdoors (fall) | Jun 20 – Jul 1 |
| Cabbage | Start seeds indoors (spring) | Mar 24 – Apr 21 |
| Cabbage | Transplant outdoors (spring) | Apr 21 – May 22 |
| Cabbage | Start seeds indoors (fall) | May 11 – Jun 10 |
| Cabbage | Transplant outdoors (fall) | Jun 10 – Jul 11 |
| Leaf lettuce | Sow outdoors (spring) | Apr 21 – Jul 7 |
| Leaf lettuce | Sow outdoors (fall) | Jun 10 – Jul 27 |
| Spinach | Sow outdoors (spring) | Apr 14 – May 28 |
| Spinach | Sow outdoors (fall) | Jun 27 – Aug 1 |
| Radishes | Sow outdoors (spring) | Apr 21 – Jun 11 |
| Radishes | Sow outdoors (fall) | Jun 10 – Aug 11 |
| Kale | Sow outdoors (spring) | May 8 – May 28 |
| Kale | Sow outdoors (fall) | Jun 3 – Jul 11 |
| Carrots | Sow outdoors (spring) | May 22 – Jul 7 |
| Carrots | Sow outdoors (fall) | May 11 – Jun 26 |
| Garlic | Plant outdoors (fall) | Sep 10 – Oct 11 |
Where these dates come from
ZIP code 83252 is matched to the NOAA station Malad City, ID, 4.1 km away, at 4,470 ft elevation (34 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Malad City, ID (used) | 4,470 ft | May 22 | Sep 20 |
| Downey, ID | 4,865 ft | May 31 | Sep 18 |
| Preston, ID | 4,719 ft | May 16 | Sep 28 |
| Trenton, UT | 4,455 ft | May 17 | Sep 18 |
Frost dates near Malad City
- Clifton, ID 83228 · last May 16, first Sep 28
- Portage, UT 84331 · last May 22, first Sep 20
- Dayton, ID 83232 · last May 16, first Sep 28
- Swanlake, ID 83281 · last May 29, first Sep 17
- Weston, ID 83286 · last May 16, first Sep 28
- Downey, ID 83234 · last May 31, first Sep 18
- Holbrook, ID 83243 · last May 22, first Sep 20
- Clarkston, UT 84305 · last May 11, first Oct 5
Frequently asked questions
- When is the last frost in Malad City, ID?
- For ZIP code 83252, the average last spring frost (32°F) is May 22, based on NOAA 1991-2020 climate normals for the Malad City, ID weather station. There is a 1-in-10 chance of a frost after June 16.
- When is the first frost in Malad City, ID?
- The average first fall frost (32°F) is September 20. There is a 1-in-10 chance of frost by September 4, so tender plants are at risk from that point on.
- How long is the growing season in 83252?
- 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.