Frost dates for 54103Armstrong Creek, WI
The average last spring frost in Armstrong Creek is May 24 and the average first fall frost is September 30, 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 30
- Growing season
- 128 days
Safer after Jun 7 (1-in-10 risk)
Possible by Sep 16 (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 23 · Jun 5 · Jun 25 | Sep 1 · Sep 19 · Oct 1 | 102 days | 100% |
| Frost / freeze (32°F) | May 10 · May 24 · Jun 7 | Sep 16 · Sep 30 · Oct 12 | 128 days | 100% |
| Hard freeze (28°F) | Apr 26 · May 10 · May 26 | Sep 27 · Oct 10 · Oct 26 | 152 days | 100% |
Planting calendar for Armstrong Creek
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 10 |
| 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 20 |
| Summer squash | Sow outdoors | Jun 9 – Jul 24 |
| Winter squash & pumpkins | Sow outdoors | Jun 23 – Jul 24 |
| Snap beans | Sow outdoors | Jun 9 – Jul 13 |
| Sweet corn | Sow outdoors | Jun 9 – Jun 10 |
| 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 31 – Jun 10 |
| Broccoli | Transplant outdoors (fall) | Jun 30 – Jul 11 |
| Cabbage | Start seeds indoors (spring) | Mar 26 – Apr 23 |
| Cabbage | Transplant outdoors (spring) | Apr 23 – May 24 |
| Cabbage | Start seeds indoors (fall) | May 21 – Jun 20 |
| Cabbage | Transplant outdoors (fall) | Jun 20 – Jul 21 |
| Leaf lettuce | Sow outdoors (spring) | Apr 23 – Jul 9 |
| Leaf lettuce | Sow outdoors (fall) | Jun 20 – Aug 6 |
| Spinach | Sow outdoors (spring) | Apr 16 – May 30 |
| Spinach | Sow outdoors (fall) | Jul 7 – Aug 11 |
| Radishes | Sow outdoors (spring) | Apr 23 – Jun 13 |
| Radishes | Sow outdoors (fall) | Jun 20 – Aug 21 |
| Kale | Sow outdoors (spring) | May 10 – May 30 |
| Kale | Sow outdoors (fall) | Jun 13 – Jul 21 |
| Carrots | Sow outdoors (spring) | May 24 – Jul 9 |
| Carrots | Sow outdoors (fall) | May 21 – Jul 6 |
| Garlic | Plant outdoors (fall) | Sep 20 – Oct 21 |
Where these dates come from
ZIP code 54103 is matched to the NOAA station Goodman Sanitary Dist, WI, 11.6 km away, at 1,448 ft elevation (15 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Goodman Sanitary Dist, WI (used) | 1,448 ft | May 24 | Sep 30 |
| Laona 6 Sw, WI | 1,695 ft | May 19 | Sep 29 |
| Iron Mtn Ford Ap, MI | 1,149 ft | May 25 | Sep 24 |
| Iron Mtn-Kingsford Wwtp, MI | 1,071 ft | May 17 | Oct 1 |
Frost dates near Armstrong Creek
- Fence, WI 54120 · last May 24, first Sep 30
- Goodman, WI 54125 · last May 24, first Sep 30
- Laona, WI 54541 · last May 19, first Sep 29
- Argonne, WI 54511 · last May 19, first Sep 29
- Long Lake, WI 54542 · last Jun 4, first Sep 10
- Wabeno, WI 54566 · last May 19, first Sep 29
- Dunbar, WI 54119 · last May 17, first Oct 1
- Florence, WI 54121 · last May 24, first Sep 25
Frequently asked questions
- When is the last frost in Armstrong Creek, WI?
- For ZIP code 54103, the average last spring frost (32°F) is May 24, based on NOAA 1991-2020 climate normals for the Goodman Sanitary Dist, WI weather station. There is a 1-in-10 chance of a frost after June 7.
- When is the first frost in Armstrong Creek, WI?
- The average first fall frost (32°F) is September 30. There is a 1-in-10 chance of frost by September 16, so tender plants are at risk from that point on.
- How long is the growing season in 54103?
- 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.