Frost dates for 54534Hurley, WI
The average last spring frost in Hurley is May 24 and the average first fall frost is September 28, giving a typical growing season of about 128 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 24
- Average first fall frost
- Sep 28
- Growing season
- 128 days
Safer after Jun 7 (1-in-10 risk)
Possible by Sep 13 (1-in-10 risk)
Last frost typically in 209 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 20 · Jun 3 · Jun 18 | Sep 2 · Sep 18 · Oct 2 | 105 days | 100% |
| Frost / freeze (32°F) | May 4 · May 24 · Jun 7 | Sep 13 · Sep 28 · Oct 11 | 128 days | 100% |
| Hard freeze (28°F) | Apr 23 · May 8 · May 28 | Sep 22 · Oct 8 · Oct 23 | 151 days | 100% |
Planting calendar for Hurley
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 23 – Jun 29 |
| Tomatoes | Transplant outdoors | Jun 9 – Jun 8 |
| Peppers | Start seeds indoors | Apr 23 – May 24 |
| Peppers | Transplant outdoors | Jun 23 – Jul 24 |
| Eggplant | Start seeds indoors | May 10 – Jun 8 |
| Eggplant | Transplant outdoors | Jun 23 – Jul 24 |
| Cucumbers | Sow outdoors | Jun 23 – Jun 18 |
| Summer squash | Sow outdoors | Jun 9 – Jul 24 |
| Winter squash & pumpkins | Sow outdoors | Jun 23 – Jul 24 |
| Snap beans | Sow outdoors | Jun 9 – Jul 11 |
| Sweet corn | Sow outdoors | Jun 9 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 23 – Jul 24 |
| Okra | Sow outdoors | Jun 16 – Jul 9 |
| Peas | Sow outdoors (spring) | Apr 23 – Jun 8 |
| Potatoes | Plant outdoors (spring) | Apr 23 – Jun 23 |
| Onions | Start seeds indoors (spring) | Mar 12 – Apr 8 |
| Onions | Transplant outdoors (spring) | May 10 – Jun 8 |
| Broccoli | Start seeds indoors (spring) | Apr 5 – May 9 |
| Broccoli | Transplant outdoors (spring) | May 10 – Jun 8 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Mar 26 – Apr 23 |
| Cabbage | Transplant outdoors (spring) | Apr 23 – May 24 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 23 – Jul 9 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Apr 16 – May 30 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 23 – Jun 13 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | May 10 – May 30 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 24 – Jul 9 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 54534 is matched to the NOAA station Hurley, WI, 2 km away, at 1,444 ft elevation (85 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hurley, WI (used) | 1,444 ft | May 24 | Sep 28 |
| Ironwood, MI | 1,430 ft | May 20 | Oct 1 |
| Ironwood #2, MI | 1,520 ft | May 19 | Sep 28 |
| Saxon 1Wsw, WI | 1,165 ft | May 23 | Oct 1 |
Frost dates near Hurley
- Gile, WI 54525 · last May 24, first Sep 28
- Ironwood, MI 49938 · last May 24, first Sep 28
- Montreal, WI 54550 · last May 24, first Sep 28
- Iron Belt, WI 54536 · last May 24, first Sep 28
- Bessemer, MI 49911 · last May 20, first Oct 1
- Ramsay, MI 49959 · last May 20, first Oct 1
- Upson, WI 54565 · last May 24, first Sep 28
- Saxon, WI 54559 · last May 23, first Oct 1
Frequently asked questions
- When is the last frost in Hurley, WI?
- For ZIP code 54534, the average last spring frost (32°F) is May 24, based on NOAA 1991-2020 climate normals for the Hurley, WI weather station. There is a 1-in-10 chance of a frost after June 7.
- When is the first frost in Hurley, WI?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 13, so tender plants are at risk from that point on.
- How long is the growing season in 54534?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 128 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.