Frost dates for 83619Fruitland, ID
The average last spring frost in Fruitland is April 21 and the average first fall frost is October 14, giving a typical growing season of about 176 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 21
- Average first fall frost
- Oct 14
- Growing season
- 176 days
Safer after May 8 (1-in-10 risk)
Possible by Sep 29 (1-in-10 risk)
Last frost typically in 170 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 20 · May 4 · May 20 | Sep 18 · Oct 1 · Oct 14 | 150 days | 100% |
| Frost / freeze (32°F) | Apr 4 · Apr 21 · May 8 | Sep 29 · Oct 14 · Oct 29 | 176 days | 100% |
| Hard freeze (28°F) | Mar 13 · Apr 2 · Apr 23 | Oct 11 · Oct 27 · Nov 11 | 205 days | 100% |
Planting calendar for Fruitland
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 21 – May 27 |
| Tomatoes | Transplant outdoors | May 7 – Jun 24 |
| Peppers | Start seeds indoors | Mar 21 – Apr 21 |
| Peppers | Transplant outdoors | May 21 – Jun 21 |
| Eggplant | Start seeds indoors | Apr 7 – May 6 |
| Eggplant | Transplant outdoors | May 21 – Jun 21 |
| Cucumbers | Sow outdoors | May 21 – Jul 4 |
| Summer squash | Sow outdoors | May 7 – Jun 21 |
| Winter squash & pumpkins | Sow outdoors | May 21 – Jun 21 |
| Snap beans | Sow outdoors | May 7 – Jul 27 |
| Sweet corn | Sow outdoors | May 7 – Jun 24 |
| Watermelon & cantaloupe | Sow outdoors | May 21 – Jun 21 |
| Okra | Sow outdoors | May 14 – Jun 6 |
| Peas | Sow outdoors (spring) | Mar 21 – May 6 |
| Potatoes | Plant outdoors (spring) | Mar 21 – May 21 |
| Onions | Start seeds indoors (spring) | Feb 7 – Mar 6 |
| Onions | Transplant outdoors (spring) | Apr 7 – May 6 |
| Broccoli | Start seeds indoors (spring) | Mar 3 – Apr 6 |
| Broccoli | Transplant outdoors (spring) | Apr 7 – May 6 |
| Broccoli | Start seeds indoors (fall) | Jun 14 – Jun 24 |
| Broccoli | Transplant outdoors (fall) | Jul 14 – Jul 25 |
| Cabbage | Start seeds indoors (spring) | Feb 21 – Mar 21 |
| Cabbage | Transplant outdoors (spring) | Mar 21 – Apr 21 |
| Cabbage | Start seeds indoors (fall) | Jun 4 – Jul 4 |
| Cabbage | Transplant outdoors (fall) | Jul 4 – Aug 4 |
| Leaf lettuce | Sow outdoors (spring) | Mar 21 – Jun 6 |
| Leaf lettuce | Sow outdoors (fall) | Jul 4 – Aug 20 |
| Spinach | Sow outdoors (spring) | Mar 14 – Apr 27 |
| Spinach | Sow outdoors (fall) | Jul 21 – Aug 25 |
| Radishes | Sow outdoors (spring) | Mar 21 – May 11 |
| Radishes | Sow outdoors (fall) | Jul 4 – Sep 4 |
| Kale | Sow outdoors (spring) | Apr 7 – Apr 27 |
| Kale | Sow outdoors (fall) | Jun 27 – Aug 4 |
| Carrots | Sow outdoors (spring) | Apr 21 – Jun 6 |
| Carrots | Sow outdoors (fall) | Jun 4 – Jul 20 |
| Garlic | Plant outdoors (fall) | Oct 4 – Nov 4 |
Where these dates come from
ZIP code 83619 is matched to the NOAA station Ontario Muni Ap, OR, 8.1 km away, at 2,190 ft elevation (38 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Ontario Muni Ap, OR (used) | 2,190 ft | Apr 21 | Oct 14 |
| Ontario Ksrv, OR | 2,145 ft | Apr 22 | Oct 9 |
| Payette, ID | 2,150 ft | Apr 19 | Oct 20 |
| Malheur Branch Exp Stn, OR | 2,260 ft | Apr 23 | Oct 13 |
Frost dates near Fruitland
- Ontario, OR 97914 · last Apr 22, first Oct 9
- Payette, ID 83661 · last Apr 19, first Oct 20
- New Plymouth, ID 83655 · last Apr 23, first Oct 13
- Nyssa, OR 97913 · last Apr 18, first Oct 18
- Parma, ID 83660 · last Apr 27, first Oct 9
- Letha, ID 83636 · last Apr 30, first Oct 17
- Weiser, ID 83672 · last Apr 23, first Oct 13
- Vale, OR 97918 · last May 8, first Sep 29
Frequently asked questions
- When is the last frost in Fruitland, ID?
- For ZIP code 83619, the average last spring frost (32°F) is April 21, based on NOAA 1991-2020 climate normals for the Ontario Muni Ap, OR weather station. There is a 1-in-10 chance of a frost after May 8.
- When is the first frost in Fruitland, ID?
- The average first fall frost (32°F) is October 14. There is a 1-in-10 chance of frost by September 29, so tender plants are at risk from that point on.
- How long is the growing season in 83619?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 176 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.