Frost dates for 97032Hubbard, OR
The average last spring frost in Hubbard is March 16 and the average first fall frost is November 14, giving a typical growing season of about 242 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 16
- Average first fall frost
- Nov 14
- Growing season
- 242 days
Safer after Apr 7 (1-in-10 risk)
Possible by Oct 27 (1-in-10 risk)
First frost typically in 14 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) | Mar 27 · Apr 15 · May 4 | Oct 9 · Oct 26 · Nov 14 | 193 days | 100% |
| Frost / freeze (32°F) | Feb 21 · Mar 16 · Apr 7 | Oct 27 · Nov 14 · Dec 6 | 242 days | 100% |
| Hard freeze (28°F) | Jan 4 · Feb 15 · Mar 8 | Nov 9 · Dec 1 · Dec 30 | 292 days | 99% |
Planting calendar for Hubbard
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 | Feb 13 – Apr 21 |
| Tomatoes | Transplant outdoors | Apr 1 – Jul 25 |
| Peppers | Start seeds indoors | Feb 13 – Mar 16 |
| Peppers | Transplant outdoors | Apr 15 – May 16 |
| Eggplant | Start seeds indoors | Mar 2 – Mar 31 |
| Eggplant | Transplant outdoors | Apr 15 – May 16 |
| Cucumbers | Sow outdoors | Apr 15 – Aug 4 |
| Summer squash | Sow outdoors | Apr 1 – May 16 |
| Winter squash & pumpkins | Sow outdoors | Apr 15 – May 16 |
| Snap beans | Sow outdoors | Apr 1 – Aug 27 |
| Sweet corn | Sow outdoors | Apr 1 – Jul 25 |
| Watermelon & cantaloupe | Sow outdoors | Apr 15 – May 16 |
| Okra | Sow outdoors | Apr 8 – May 1 |
| Peas | Sow outdoors (spring) | Feb 13 – Mar 31 |
| Potatoes | Plant outdoors (spring) | Feb 13 – Apr 15 |
| Onions | Start seeds indoors (spring) | Jan 2 – Jan 29 |
| Onions | Transplant outdoors (spring) | Mar 2 – Mar 31 |
| Broccoli | Start seeds indoors (spring) | Jan 26 – Mar 1 |
| Broccoli | Transplant outdoors (spring) | Mar 2 – Mar 31 |
| Broccoli | Start seeds indoors (fall) | Jul 15 – Jul 25 |
| Broccoli | Transplant outdoors (fall) | Aug 14 – Aug 25 |
| Cabbage | Start seeds indoors (spring) | Jan 16 – Feb 13 |
| Cabbage | Transplant outdoors (spring) | Feb 13 – Mar 16 |
| Cabbage | Start seeds indoors (fall) | Jul 5 – Aug 4 |
| Cabbage | Transplant outdoors (fall) | Aug 4 – Sep 4 |
| Leaf lettuce | Sow outdoors (spring) | Feb 13 – May 1 |
| Leaf lettuce | Sow outdoors (fall) | Aug 4 – Sep 20 |
| Spinach | Sow outdoors (spring) | Feb 6 – Mar 22 |
| Spinach | Sow outdoors (fall) | Aug 21 – Sep 25 |
| Radishes | Sow outdoors (spring) | Feb 13 – Apr 5 |
| Radishes | Sow outdoors (fall) | Aug 4 – Oct 5 |
| Kale | Sow outdoors (spring) | Mar 2 – Mar 22 |
| Kale | Sow outdoors (fall) | Jul 28 – Sep 4 |
| Carrots | Sow outdoors (spring) | Mar 16 – May 1 |
| Carrots | Sow outdoors (fall) | Jul 5 – Aug 20 |
| Garlic | Plant outdoors (fall) | Nov 4 – Dec 5 |
Where these dates come from
ZIP code 97032 is matched to the NOAA station Aurora State Ap, OR, 8 km away, at 196 ft elevation (12 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Aurora State Ap, OR (used) | 196 ft | Mar 16 | Nov 14 |
| N Willamette Exp Stn, OR | 150 ft | Mar 18 | Nov 13 |
| Rex 1 S, OR | 515 ft | Mar 21 | Nov 22 |
| Silverton, OR | 408 ft | Mar 28 | Nov 10 |
Frost dates near Hubbard
- Donald, OR 97020 · last Mar 16, first Nov 14
- Aurora, OR 97002 · last Mar 16, first Nov 14
- Woodburn, OR 97071 · last Mar 16, first Nov 14
- Gervais, OR 97026 · last Mar 16, first Nov 14
- Mount Angel, OR 97362 · last Mar 28, first Nov 10
- Canby, OR 97013 · last Mar 16, first Nov 14
- Saint Paul, OR 97137 · last Apr 15, first Oct 26
- Wilsonville, OR 97070 · last Mar 18, first Nov 13
Frequently asked questions
- When is the last frost in Hubbard, OR?
- For ZIP code 97032, the average last spring frost (32°F) is March 16, based on NOAA 1991-2020 climate normals for the Aurora State Ap, OR weather station. There is a 1-in-10 chance of a frost after April 7.
- When is the first frost in Hubbard, OR?
- The average first fall frost (32°F) is November 14. There is a 1-in-10 chance of frost by October 27, so tender plants are at risk from that point on.
- How long is the growing season in 97032?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 242 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.