Frost dates for 54559Saxon, WI
The average last spring frost in Saxon is May 23 and the average first fall frost is October 1, giving a typical growing season of about 132 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 23
- Average first fall frost
- Oct 1
- Growing season
- 132 days
Safer after Jun 5 (1-in-10 risk)
Possible by Sep 18 (1-in-10 risk)
Last frost typically in 208 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 21 · Jun 3 · Jun 18 | Sep 5 · Sep 22 · Oct 4 | 109 days | 100% |
| Frost / freeze (32°F) | May 4 · May 23 · Jun 5 | Sep 18 · Oct 1 · Oct 16 | 132 days | 100% |
| Hard freeze (28°F) | Apr 24 · May 8 · May 24 | Sep 29 · Oct 14 · Oct 31 | 157 days | 100% |
Planting calendar for Saxon
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 22 – Jun 28 |
| Tomatoes | Transplant outdoors | Jun 8 – Jun 11 |
| Peppers | Start seeds indoors | Apr 22 – May 23 |
| Peppers | Transplant outdoors | Jun 22 – Jul 23 |
| Eggplant | Start seeds indoors | May 9 – Jun 7 |
| Eggplant | Transplant outdoors | Jun 22 – Jul 23 |
| Cucumbers | Sow outdoors | Jun 22 – Jun 21 |
| Summer squash | Sow outdoors | Jun 8 – Jul 23 |
| Winter squash & pumpkins | Sow outdoors | Jun 22 – Jul 23 |
| Snap beans | Sow outdoors | Jun 8 – Jul 14 |
| Sweet corn | Sow outdoors | Jun 8 – Jun 11 |
| Watermelon & cantaloupe | Sow outdoors | Jun 22 – Jul 23 |
| Okra | Sow outdoors | Jun 15 – Jul 8 |
| Peas | Sow outdoors (spring) | Apr 22 – Jun 7 |
| Potatoes | Plant outdoors (spring) | Apr 22 – Jun 22 |
| Onions | Start seeds indoors (spring) | Mar 11 – Apr 7 |
| Onions | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (spring) | Apr 4 – May 8 |
| Broccoli | Transplant outdoors (spring) | May 9 – Jun 7 |
| Broccoli | Start seeds indoors (fall) | Jun 1 – Jun 11 |
| Broccoli | Transplant outdoors (fall) | Jul 1 – Jul 12 |
| Cabbage | Start seeds indoors (spring) | Mar 25 – Apr 22 |
| Cabbage | Transplant outdoors (spring) | Apr 22 – May 23 |
| Cabbage | Start seeds indoors (fall) | May 22 – Jun 21 |
| Cabbage | Transplant outdoors (fall) | Jun 21 – Jul 22 |
| Leaf lettuce | Sow outdoors (spring) | Apr 22 – Jul 8 |
| Leaf lettuce | Sow outdoors (fall) | Jun 21 – Aug 7 |
| Spinach | Sow outdoors (spring) | Apr 15 – May 29 |
| Spinach | Sow outdoors (fall) | Jul 8 – Aug 12 |
| Radishes | Sow outdoors (spring) | Apr 22 – Jun 12 |
| Radishes | Sow outdoors (fall) | Jun 21 – Aug 22 |
| Kale | Sow outdoors (spring) | May 9 – May 29 |
| Kale | Sow outdoors (fall) | Jun 14 – Jul 22 |
| Carrots | Sow outdoors (spring) | May 23 – Jul 8 |
| Carrots | Sow outdoors (fall) | May 22 – Jul 7 |
| Garlic | Plant outdoors (fall) | Sep 21 – Oct 22 |
Where these dates come from
ZIP code 54559 is matched to the NOAA station Saxon 1Wsw, WI, 1.1 km away, at 1,165 ft elevation (76 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Saxon 1Wsw, WI (used) | 1,165 ft | May 23 | Oct 1 |
| Hurley, WI | 1,444 ft | May 24 | Sep 28 |
| Ironwood, MI | 1,430 ft | May 20 | Oct 1 |
| Mellen 4 Ne, WI | 1,300 ft | May 26 | Sep 27 |
Frost dates near Saxon
- Upson, WI 54565 · last May 24, first Sep 28
- Iron Belt, WI 54536 · last May 24, first Sep 28
- Odanah, WI 54861 · last May 20, first Oct 2
- Montreal, WI 54550 · last May 24, first Sep 28
- Gile, WI 54525 · last May 24, first Sep 28
- Hurley, WI 54534 · last May 24, first Sep 28
- Ironwood, MI 49938 · last May 24, first Sep 28
- Ashland, WI 54806 · last May 20, first Oct 2
Frequently asked questions
- When is the last frost in Saxon, WI?
- For ZIP code 54559, the average last spring frost (32°F) is May 23, based on NOAA 1991-2020 climate normals for the Saxon 1Wsw, WI weather station. There is a 1-in-10 chance of a frost after June 5.
- When is the first frost in Saxon, WI?
- The average first fall frost (32°F) is October 1. There is a 1-in-10 chance of frost by September 18, so tender plants are at risk from that point on.
- How long is the growing season in 54559?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 132 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.