Frost dates for 83469Shoup, ID
The average last spring frost in Shoup is May 3 and the average first fall frost is October 8, giving a typical growing season of about 157 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 3
- Average first fall frost
- Oct 8
- Growing season
- 157 days
Safer after May 21 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 183 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 4 · May 19 · Jun 7 | Sep 11 · Sep 26 · Oct 8 | 129 days | 100% |
| Frost / freeze (32°F) | Apr 17 · May 3 · May 21 | Sep 24 · Oct 8 · Oct 20 | 157 days | 100% |
| Hard freeze (28°F) | Mar 24 · Apr 15 · May 5 | Oct 7 · Oct 20 · Nov 2 | 189 days | 100% |
Planting calendar for Shoup
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 2 – Jun 8 |
| Tomatoes | Transplant outdoors | May 19 – Jun 18 |
| Peppers | Start seeds indoors | Apr 2 – May 3 |
| Peppers | Transplant outdoors | Jun 2 – Jul 3 |
| Eggplant | Start seeds indoors | Apr 19 – May 18 |
| Eggplant | Transplant outdoors | Jun 2 – Jul 3 |
| Cucumbers | Sow outdoors | Jun 2 – Jun 28 |
| Summer squash | Sow outdoors | May 19 – Jul 3 |
| Winter squash & pumpkins | Sow outdoors | Jun 2 – Jul 3 |
| Snap beans | Sow outdoors | May 19 – Jul 21 |
| Sweet corn | Sow outdoors | May 19 – Jun 18 |
| Watermelon & cantaloupe | Sow outdoors | Jun 2 – Jul 3 |
| Okra | Sow outdoors | May 26 – Jun 18 |
| Peas | Sow outdoors (spring) | Apr 2 – May 18 |
| Potatoes | Plant outdoors (spring) | Apr 2 – Jun 2 |
| Onions | Start seeds indoors (spring) | Feb 19 – Mar 18 |
| Onions | Transplant outdoors (spring) | Apr 19 – May 18 |
| Broccoli | Start seeds indoors (spring) | Mar 15 – Apr 18 |
| Broccoli | Transplant outdoors (spring) | Apr 19 – May 18 |
| Broccoli | Start seeds indoors (fall) | Jun 8 – Jun 18 |
| Broccoli | Transplant outdoors (fall) | Jul 8 – Jul 19 |
| Cabbage | Start seeds indoors (spring) | Mar 5 – Apr 2 |
| Cabbage | Transplant outdoors (spring) | Apr 2 – May 3 |
| Cabbage | Start seeds indoors (fall) | May 29 – Jun 28 |
| Cabbage | Transplant outdoors (fall) | Jun 28 – Jul 29 |
| Leaf lettuce | Sow outdoors (spring) | Apr 2 – Jun 18 |
| Leaf lettuce | Sow outdoors (fall) | Jun 28 – Aug 14 |
| Spinach | Sow outdoors (spring) | Mar 26 – May 9 |
| Spinach | Sow outdoors (fall) | Jul 15 – Aug 19 |
| Radishes | Sow outdoors (spring) | Apr 2 – May 23 |
| Radishes | Sow outdoors (fall) | Jun 28 – Aug 29 |
| Kale | Sow outdoors (spring) | Apr 19 – May 9 |
| Kale | Sow outdoors (fall) | Jun 21 – Jul 29 |
| Carrots | Sow outdoors (spring) | May 3 – Jun 18 |
| Carrots | Sow outdoors (fall) | May 29 – Jul 14 |
| Garlic | Plant outdoors (fall) | Sep 28 – Oct 29 |
Where these dates come from
ZIP code 83469 is matched to the NOAA station Shoup, ID, 0 km away, at 3,400 ft elevation (21 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Shoup, ID (used) | 3,400 ft | May 3 | Oct 8 |
| Gibbonsville #2, ID | 4,480 ft | Jun 1 | Sep 17 |
| Salmon-Ksra, ID | 3,953 ft | May 17 | Sep 24 |
| Taylor Rch, ID | 3,835 ft | May 11 | Sep 30 |
Frost dates near Shoup
- North Fork, ID 83466 · last —, first —
- Gibbonsville, ID 83463 · last —, first —
- Cobalt, ID 83229 · last May 14, first Sep 25
- Carmen, ID 83462 · last May 17, first Sep 24
- Salmon, ID 83467 · last May 17, first Sep 24
- Tendoy, ID 83468 · last —, first —
- Sula, MT 59871 · last —, first —
- Conner, MT 59827 · last —, first —
Frequently asked questions
- When is the last frost in Shoup, ID?
- For ZIP code 83469, the average last spring frost (32°F) is May 3, based on NOAA 1991-2020 climate normals for the Shoup, ID weather station. There is a 1-in-10 chance of a frost after May 21.
- When is the first frost in Shoup, ID?
- The average first fall frost (32°F) is October 8. 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 83469?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 157 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.