Frost dates for 96015Canby, CA
The average last spring frost in Canby is June 1 and the average first fall frost is September 16, giving a typical growing season of about 106 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 1
- Average first fall frost
- Sep 16
- Growing season
- 106 days
Safer after Jun 20 (1-in-10 risk)
Possible by Sep 1 (1-in-10 risk)
Last frost typically in 211 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) | Jun 1 · Jun 19 · Jul 3 | Aug 18 · Sep 3 · Sep 17 | 76 days | 100% |
| Frost / freeze (32°F) | May 13 · Jun 1 · Jun 20 | Sep 1 · Sep 16 · Sep 29 | 106 days | 100% |
| Hard freeze (28°F) | Apr 25 · May 12 · Jun 3 | Sep 13 · Sep 28 · Oct 11 | 137 days | 100% |
Planting calendar for Canby
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 | May 1 – Jul 7 |
| Tomatoes | Transplant outdoors | Jun 17 – May 27 |
| Peppers | Start seeds indoors | May 1 – Jun 1 |
| Peppers | Transplant outdoors | Jul 1 – Aug 1 |
| Eggplant | Start seeds indoors | May 18 – Jun 16 |
| Eggplant | Transplant outdoors | Jul 1 – Aug 1 |
| Cucumbers | Sow outdoors | Jul 1 – Jun 6 |
| Summer squash | Sow outdoors | Jun 17 – Aug 1 |
| Winter squash & pumpkins | Sow outdoors | Jul 1 – Aug 1 |
| Snap beans | Sow outdoors | Jun 17 – Jun 29 |
| Sweet corn | Sow outdoors | Jun 17 – May 27 |
| Watermelon & cantaloupe | Sow outdoors | Jul 1 – Aug 1 |
| Okra | Sow outdoors | Jun 24 – Jul 17 |
| Peas | Sow outdoors (spring) | May 1 – Jun 16 |
| Potatoes | Plant outdoors (spring) | May 1 – Jul 1 |
| Onions | Start seeds indoors (spring) | Mar 20 – Apr 16 |
| Onions | Transplant outdoors (spring) | May 18 – Jun 16 |
| Broccoli | Start seeds indoors (spring) | Apr 13 – May 17 |
| Broccoli | Transplant outdoors (spring) | May 18 – Jun 16 |
| Broccoli | Start seeds indoors (fall) | May 17 – May 27 |
| Broccoli | Transplant outdoors (fall) | Jun 16 – Jun 27 |
| Cabbage | Start seeds indoors (spring) | Apr 3 – May 1 |
| Cabbage | Transplant outdoors (spring) | May 1 – Jun 1 |
| Cabbage | Start seeds indoors (fall) | May 7 – Jun 6 |
| Cabbage | Transplant outdoors (fall) | Jun 6 – Jul 7 |
| Leaf lettuce | Sow outdoors (spring) | May 1 – Jul 17 |
| Leaf lettuce | Sow outdoors (fall) | Jun 6 – Jul 23 |
| Spinach | Sow outdoors (spring) | Apr 24 – Jun 7 |
| Spinach | Sow outdoors (fall) | Jun 23 – Jul 28 |
| Radishes | Sow outdoors (spring) | May 1 – Jun 21 |
| Radishes | Sow outdoors (fall) | Jun 6 – Aug 7 |
| Kale | Sow outdoors (spring) | May 18 – Jun 7 |
| Kale | Sow outdoors (fall) | May 30 – Jul 7 |
| Carrots | Sow outdoors (spring) | Jun 1 – Jul 17 |
| Carrots | Sow outdoors (fall) | May 7 – Jun 22 |
| Garlic | Plant outdoors (fall) | Sep 6 – Oct 7 |
Where these dates come from
ZIP code 96015 is matched to the NOAA station Canby 3 Sw, CA, 5.2 km away, at 4,310 ft elevation (178 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Canby 3 Sw, CA (used) | 4,310 ft | Jun 1 | Sep 16 |
| Alturas Muni Ap, CA | 4,375 ft | Jun 3 | Sep 12 |
| Adin Rs, CA | 4,195 ft | May 28 | Sep 29 |
| Alturas, CA | 4,378 ft | Jun 3 | Sep 13 |
Frost dates near Canby
- Adin, CA 96006 · last May 28, first Sep 29
- Alturas, CA 96101 · last Jun 3, first Sep 13
- Lookout, CA 96054 · last May 28, first Sep 29
- Bieber, CA 96009 · last May 28, first Sep 29
- Likely, CA 96116 · last Jun 3, first Sep 13
- Nubieber, CA 96068 · last May 28, first Sep 29
- Davis Creek, CA 96108 · last May 26, first Oct 1
- Mcarthur, CA 96056 · last May 29, first Sep 19
Frequently asked questions
- When is the last frost in Canby, CA?
- For ZIP code 96015, the average last spring frost (32°F) is June 1, based on NOAA 1991-2020 climate normals for the Canby 3 Sw, CA weather station. There is a 1-in-10 chance of a frost after June 20.
- When is the first frost in Canby, CA?
- The average first fall frost (32°F) is September 16. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.
- How long is the growing season in 96015?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 106 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.