Frost dates for 83624Grand View, ID
The average last spring frost in Grand View is April 28 and the average first fall frost is October 6, giving a typical growing season of about 162 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 28
- Average first fall frost
- Oct 6
- Growing season
- 162 days
Safer after May 13 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 176 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) | Apr 26 · May 10 · May 29 | Sep 12 · Sep 27 · Oct 9 | 137 days | 100% |
| Frost / freeze (32°F) | Apr 12 · Apr 28 · May 13 | Sep 24 · Oct 6 · Oct 22 | 162 days | 100% |
| Hard freeze (28°F) | Mar 25 · Apr 12 · May 1 | Oct 4 · Oct 20 · Nov 2 | 189 days | 100% |
Planting calendar for Grand View
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 | Mar 28 – Jun 3 |
| Tomatoes | Transplant outdoors | May 14 – Jun 16 |
| Peppers | Start seeds indoors | Mar 28 – Apr 28 |
| Peppers | Transplant outdoors | May 28 – Jun 28 |
| Eggplant | Start seeds indoors | Apr 14 – May 13 |
| Eggplant | Transplant outdoors | May 28 – Jun 28 |
| Cucumbers | Sow outdoors | May 28 – Jun 26 |
| Summer squash | Sow outdoors | May 14 – Jun 28 |
| Winter squash & pumpkins | Sow outdoors | May 28 – Jun 28 |
| Snap beans | Sow outdoors | May 14 – Jul 19 |
| Sweet corn | Sow outdoors | May 14 – Jun 16 |
| Watermelon & cantaloupe | Sow outdoors | May 28 – Jun 28 |
| Okra | Sow outdoors | May 21 – Jun 13 |
| Peas | Sow outdoors (spring) | Mar 28 – May 13 |
| Potatoes | Plant outdoors (spring) | Mar 28 – May 28 |
| Onions | Start seeds indoors (spring) | Feb 14 – Mar 13 |
| Onions | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (spring) | Mar 10 – Apr 13 |
| Broccoli | Transplant outdoors (spring) | Apr 14 – May 13 |
| Broccoli | Start seeds indoors (fall) | Jun 6 – Jun 16 |
| Broccoli | Transplant outdoors (fall) | Jul 6 – Jul 17 |
| Cabbage | Start seeds indoors (spring) | Feb 28 – Mar 28 |
| Cabbage | Transplant outdoors (spring) | Mar 28 – Apr 28 |
| Cabbage | Start seeds indoors (fall) | May 27 – Jun 26 |
| Cabbage | Transplant outdoors (fall) | Jun 26 – Jul 27 |
| Leaf lettuce | Sow outdoors (spring) | Mar 28 – Jun 13 |
| Leaf lettuce | Sow outdoors (fall) | Jun 26 – Aug 12 |
| Spinach | Sow outdoors (spring) | Mar 21 – May 4 |
| Spinach | Sow outdoors (fall) | Jul 13 – Aug 17 |
| Radishes | Sow outdoors (spring) | Mar 28 – May 18 |
| Radishes | Sow outdoors (fall) | Jun 26 – Aug 27 |
| Kale | Sow outdoors (spring) | Apr 14 – May 4 |
| Kale | Sow outdoors (fall) | Jun 19 – Jul 27 |
| Carrots | Sow outdoors (spring) | Apr 28 – Jun 13 |
| Carrots | Sow outdoors (fall) | May 27 – Jul 12 |
| Garlic | Plant outdoors (fall) | Sep 26 – Oct 27 |
Where these dates come from
ZIP code 83624 is matched to the NOAA station Grand View 4 Nw, ID, 7.5 km away, at 2,400 ft elevation (31 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Grand View 4 Nw, ID (used) | 2,400 ft | Apr 28 | Oct 6 |
| Bruneau, ID | 2,530 ft | Apr 17 | Oct 17 |
| Mtn Home, ID | 3,140 ft | May 2 | Oct 8 |
| Swan Falls Ph, ID | 2,325 ft | Apr 12 | Oct 26 |
Frost dates near Grand View
- Mountain Home, ID 83647 · last May 2, first Oct 8
- Bruneau, ID 83604 · last May 17, first Sep 29
- Murphy, ID 83650 · last May 31, first Oct 6
- Hammett, ID 83627 · last May 1, first Oct 3
- Boise, ID 83708 · last Apr 24, first Oct 21
- Melba, ID 83641 · last Apr 29, first Oct 13
- Kuna, ID 83634 · last Apr 24, first Oct 21
- Glenns Ferry, ID 83623 · last May 1, first Oct 3
Frequently asked questions
- When is the last frost in Grand View, ID?
- For ZIP code 83624, the average last spring frost (32°F) is April 28, based on NOAA 1991-2020 climate normals for the Grand View 4 Nw, ID weather station. There is a 1-in-10 chance of a frost after May 13.
- When is the first frost in Grand View, ID?
- The average first fall frost (32°F) is October 6. 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 83624?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 162 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.