Frost dates for 54829Cumberland, WI
The average last spring frost in Cumberland is May 5 and the average first fall frost is October 4, giving a typical growing season of about 152 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 5
- Average first fall frost
- Oct 4
- Growing season
- 152 days
Safer after May 18 (1-in-10 risk)
Possible by Sep 23 (1-in-10 risk)
Last frost typically in 185 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 3 · May 14 · May 29 | Sep 15 · Sep 27 · Oct 8 | 134 days | 100% |
| Frost / freeze (32°F) | Apr 22 · May 5 · May 18 | Sep 23 · Oct 4 · Oct 19 | 152 days | 100% |
| Hard freeze (28°F) | Apr 12 · Apr 25 · May 8 | Oct 1 · Oct 16 · Oct 30 | 172 days | 100% |
Planting calendar for Cumberland
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 4 – Jun 10 |
| Tomatoes | Transplant outdoors | May 21 – Jun 14 |
| Peppers | Start seeds indoors | Apr 4 – May 5 |
| Peppers | Transplant outdoors | Jun 4 – Jul 5 |
| Eggplant | Start seeds indoors | Apr 21 – May 20 |
| Eggplant | Transplant outdoors | Jun 4 – Jul 5 |
| Cucumbers | Sow outdoors | Jun 4 – Jun 24 |
| Summer squash | Sow outdoors | May 21 – Jul 5 |
| Winter squash & pumpkins | Sow outdoors | Jun 4 – Jul 5 |
| Snap beans | Sow outdoors | May 21 – Jul 17 |
| Sweet corn | Sow outdoors | May 21 – Jun 14 |
| Watermelon & cantaloupe | Sow outdoors | Jun 4 – Jul 5 |
| Okra | Sow outdoors | May 28 – Jun 20 |
| Peas | Sow outdoors (spring) | Apr 4 – May 20 |
| Potatoes | Plant outdoors (spring) | Apr 4 – Jun 4 |
| Onions | Start seeds indoors (spring) | Feb 21 – Mar 20 |
| Onions | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (spring) | Mar 17 – Apr 20 |
| Broccoli | Transplant outdoors (spring) | Apr 21 – May 20 |
| Broccoli | Start seeds indoors (fall) | Jun 4 – Jun 14 |
| Broccoli | Transplant outdoors (fall) | Jul 4 – Jul 15 |
| Cabbage | Start seeds indoors (spring) | Mar 7 – Apr 4 |
| Cabbage | Transplant outdoors (spring) | Apr 4 – May 5 |
| Cabbage | Start seeds indoors (fall) | May 25 – Jun 24 |
| Cabbage | Transplant outdoors (fall) | Jun 24 – Jul 25 |
| Leaf lettuce | Sow outdoors (spring) | Apr 4 – Jun 20 |
| Leaf lettuce | Sow outdoors (fall) | Jun 24 – Aug 10 |
| Spinach | Sow outdoors (spring) | Mar 28 – May 11 |
| Spinach | Sow outdoors (fall) | Jul 11 – Aug 15 |
| Radishes | Sow outdoors (spring) | Apr 4 – May 25 |
| Radishes | Sow outdoors (fall) | Jun 24 – Aug 25 |
| Kale | Sow outdoors (spring) | Apr 21 – May 11 |
| Kale | Sow outdoors (fall) | Jun 17 – Jul 25 |
| Carrots | Sow outdoors (spring) | May 5 – Jun 20 |
| Carrots | Sow outdoors (fall) | May 25 – Jul 10 |
| Garlic | Plant outdoors (fall) | Sep 24 – Oct 25 |
Where these dates come from
ZIP code 54829 is matched to the NOAA station Cumberland, WI, 1 km away, at 1,240 ft elevation (10 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cumberland, WI (used) | 1,240 ft | May 5 | Oct 4 |
| Rice Lake, WI | 1,103 ft | May 8 | Oct 2 |
| Spooner Ag Res Stn, WI | 1,100 ft | May 14 | Sep 28 |
| Luck, WI | 1,220 ft | May 6 | Oct 4 |
Frost dates near Cumberland
- Comstock, WI 54826 · last May 5, first Oct 4
- Barronett, WI 54813 · last May 5, first Oct 4
- Almena, WI 54805 · last May 5, first Oct 4
- Turtle Lake, WI 54889 · last May 5, first Oct 4
- Haugen, WI 54841 · last May 5, first Oct 4
- Barron, WI 54812 · last May 8, first Oct 2
- Rice Lake, WI 54868 · last May 8, first Oct 2
- Shell Lake, WI 54871 · last May 14, first Sep 28
Frequently asked questions
- When is the last frost in Cumberland, WI?
- For ZIP code 54829, the average last spring frost (32°F) is May 5, based on NOAA 1991-2020 climate normals for the Cumberland, WI weather station. There is a 1-in-10 chance of a frost after May 18.
- When is the first frost in Cumberland, WI?
- The average first fall frost (32°F) is October 4. There is a 1-in-10 chance of frost by September 23, so tender plants are at risk from that point on.
- How long is the growing season in 54829?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 152 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.