Frost Dates for Marinette, WI 54143
Last spring frost May 15 · First fall frost September 27 · 135 frost-free days · USDA Zone 5b
ZIP 54143 has about 15,100 people.
Moderate season: 135 frost-free days. Spring frost risk spans April 29–May 31 (32 days). Fall frost risk spans September 15–October 9 (24 days).
Frost probability for 54143
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 31 | May 15 | April 29 |
| Fall (first frost) | September 15 | September 27 | October 9 |
Dates come from NOAA 1971–2000 freeze probabilities at OCONTO 4 W (29.5 km away); the 50% date is the median year.
Which crops fit a 135-day season in Marinette
In Marinette (135 frost-free days, a moderate season), 39 of 56 planner crops fit outright, 16 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 10 | May 29–Jun 5 | 93 | fits: 80 days to maturity, 93 available after May 29. | — |
| Pepper | Apr 3 | May 29–Jun 5 | 93 | fits: 75 days to maturity, 93 available after May 29. | Jun 2 |
| Lettuce | Mar 20 | Apr 17–Apr 24 | 170 | two-plantings: Plant Apr 17 and again by Aug 6; both mature before Oct 4. | Aug 6 |
| Carrots | — | Apr 24–May 1 | 177 | fits: 70 days to maturity, 177 available after Apr 24. | Jul 26 |
| Cucumber | Apr 24 | May 29–Jun 5 | 107 | fits: 60 days to maturity, 107 available after May 29. | Jul 1 |
| Beans | — | May 22–Jun 5 | 121 | fits: 60 days to maturity, 121 available after May 22. | Jul 8 |
| Peas | — | Mar 20–May 29 | 198 | fits: 65 days to maturity, 198 available after Mar 20. | Jul 17 |
| Zucchini | May 1 | May 29–Jun 5 | 107 | fits: 55 days to maturity, 107 available after May 29. | Jul 6 |
| Onion | Feb 20 | Apr 17–May 1 | 170 | fits: 100 days to maturity, 170 available after Apr 17. | — |
| Spinach | — | Mar 20–May 8 | 212 | two-plantings: Plant Mar 20 and again by Aug 25; both mature before Oct 18. | Aug 25 |
| Kale | Mar 6 | Apr 17–May 1 | 184 | two-plantings: Plant Apr 17 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Broccoli | Mar 20 | Apr 17–May 1 | 170 | fits: 80 days to maturity, 170 available after Apr 17. | Jul 2 |
| Cabbage | Mar 20 | Apr 17–May 1 | 184 | fits: 70 days to maturity, 184 available after Apr 17. | Jul 26 |
| Radish | — | Mar 20–Jun 12 | 198 | two-plantings: Plant Mar 20 and again by Aug 26; both mature before Oct 4. | Aug 26 |
| Beets | — | Mar 20–Jun 12 | 198 | two-plantings: Plant Mar 20 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Potatoes | — | May 1–May 8 | 156 | fits: 90 days to maturity, 156 available after May 1. | — |
| Garlic | — | Sep 27 | 240 | overwinter: Plant Sep 27 to Oct 18; harvest the following summer. | Oct 18 |
| Strawberry | — | Apr 10–Jun 5 | 191 | perennial: A perennial: plant Apr 10; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 17 | May 22–May 29 | 107 | fits: 75 days to maturity, 107 available after May 22. | Jun 9 |
| Pumpkin | May 1 | May 29–May 29 | 100 | fits: 100 days to maturity, 100 available after May 29. | — |
| Cauliflower | Apr 3 | May 8–May 22 | 149 | fits: 75 days to maturity, 149 available after May 8. | Jul 7 |
| Swiss Chard | Mar 20 | May 1–May 1 | 156 | two-plantings: Plant May 1 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Arugula | — | Mar 20–Jun 12 | 212 | two-plantings: Plant Mar 20 and again by Aug 25; both mature before Oct 18. | Aug 25 |
| Brussel Sprouts | Mar 20 | Apr 17–May 1 | 184 | fits: 100 days to maturity, 184 available after Apr 17. | Jun 26 |
| Butternut Squash | May 1 | May 29–Jun 5 | 100 | fits: 100 days to maturity, 100 available after May 29. | — |
| Eggplant | Mar 27 | May 29–Jun 5 | 93 | fits: 70 days to maturity, 93 available after May 29. | Jun 7 |
| Okra | Apr 17 | May 22–May 29 | 114 | fits: 55 days to maturity, 114 available after May 22. | Jul 6 |
| Basil | Apr 10 | Jun 5–Jun 5 | 100 | fits: 60 days to maturity, 100 available after Jun 5. | Jul 1 |
| Cilantro | — | Apr 17–May 8 | 170 | two-plantings: Plant Apr 17 and again by Aug 1; both mature before Oct 4. | Aug 1 |
| Parsley | Mar 6 | May 22–May 29 | 135 | fits: 70 days to maturity, 135 available after May 22. | Jul 12 |
| Celery | Mar 6 | May 22–Jun 5 | 135 | fits: 120 days to maturity, 135 available after May 22. | May 23 |
| Scallions | Mar 6 | Apr 17–May 1 | 184 | two-plantings: Plant Apr 17 and again by Aug 5; both mature before Oct 18. | Aug 5 |
| Turnip | — | Apr 17–May 1 | 184 | two-plantings: Plant Apr 17 and again by Aug 15; both mature before Oct 18. | Aug 15 |
| Kohlrabi | — | Apr 3–Apr 17 | 198 | two-plantings: Plant Apr 3 and again by Aug 10; both mature before Oct 18. | Aug 10 |
| Bok Choy | Apr 17 | May 8–May 15 | 149 | two-plantings: Plant May 8 and again by Aug 6; both mature before Oct 4. | Aug 6 |
| Collards | Mar 6 | Apr 17–May 1 | 184 | two-plantings: Plant Apr 17 and again by Aug 5; both mature before Oct 18. | Aug 5 |
| Cantaloupe | May 1 | May 29–Jun 5 | 93 | fits: 85 days to maturity, 93 available after May 29. | — |
| Chives | Feb 20 | May 22–May 29 | 149 | fits: 90 days to maturity, 149 available after May 22. | — |
| Dill | — | Mar 20–Jun 12 | 198 | two-plantings: Plant Mar 20 and again by Jul 27; both mature before Oct 4. | Jul 27 |
| Oregano | Mar 6 | May 22–May 29 | 149 | fits: 80 days to maturity, 149 available after May 22. | — |
| Rosemary | Feb 20 | May 22–May 29 | 135 | fits: 80 days to maturity, 135 available after May 22. | — |
| Sage | Mar 20 | May 22–May 29 | 149 | fits: 75 days to maturity, 149 available after May 22. | — |
| Thyme | Mar 6 | May 22–May 29 | 149 | fits: 90 days to maturity, 149 available after May 22. | — |
| Calendula | Apr 3 | May 1–May 15 | 156 | two-plantings: Plant May 1 and again by Aug 1; both mature before Oct 4. | Aug 1 |
| Cosmos | Apr 17 | May 15–May 29 | 121 | fits: 60 days to maturity, 121 available after May 15. | Jul 1 |
| Lavender | Feb 20 | May 15–May 29 | 156 | fits: 90 days to maturity, 156 available after May 15. | — |
| Marigolds | Apr 3 | May 15–May 22 | 121 | two-plantings: Plant May 15 and again by Jul 11; both mature before Sep 13. | Jul 11 |
| Melons | May 1 | May 29–Jun 5 | 93 | fits: 85 days to maturity, 93 available after May 29. | — |
| Mint | — | May 15–May 29 | 156 | fits: 90 days to maturity, 156 available after May 15. | — |
| Nasturtiums | Apr 17 | May 15–May 22 | 121 | fits: 55 days to maturity, 121 available after May 15. | Jul 6 |
| Pole Beans | — | May 22–Jun 5 | 114 | fits: 65 days to maturity, 114 available after May 22. | Jun 26 |
| Spaghetti Squash | May 1 | May 29–Jun 5 | 100 | fits: 90 days to maturity, 100 available after May 29. | — |
| Sunflowers | — | May 15–May 29 | 121 | fits: 70 days to maturity, 121 available after May 15. | Jun 21 |
| Tomatillos | Mar 20 | May 22–May 29 | 100 | fits: 75 days to maturity, 100 available after May 22. | Jun 2 |
| Watermelon | May 1 | May 22–May 29 | 100 | fits: 80 days to maturity, 100 available after May 22. | May 28 |
| Yellow Squash | May 1 | May 29–Jun 5 | 107 | fits: 55 days to maturity, 107 available after May 29. | Jul 6 |
| Zinnias | Apr 17 | May 15–May 29 | 121 | fits: 60 days to maturity, 121 available after May 15. | Jul 1 |
Month by month in Marinette
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 20), Lavender (Feb 20), Onion (Feb 20), Rosemary (Feb 20). |
| March | Start indoors: Celery (Mar 6), Collards (Mar 6), Kale (Mar 6), Oregano (Mar 6), Parsley (Mar 6), Scallions (Mar 6), +9 more. Direct sow from: Arugula (Mar 20), Beets (Mar 20), Dill (Mar 20), Peas (Mar 20), Radish (Mar 20), Spinach (Mar 20). |
| April | Start indoors: Calendula (Apr 3), Cauliflower (Apr 3), Marigolds (Apr 3), Pepper (Apr 3), Basil (Apr 10), Tomato (Apr 10), +7 more. Direct sow from: Kohlrabi (Apr 3), Cilantro (Apr 17), Turnip (Apr 17), Carrots (Apr 24). Transplant from: Broccoli (Apr 17), Brussel Sprouts (Apr 17), Cabbage (Apr 17), Collards (Apr 17), Kale (Apr 17), Lettuce (Apr 17), +2 more. Plant: Strawberry (Apr 10). |
| May | Start indoors: Butternut Squash (May 1), Cantaloupe (May 1), Melons (May 1), Pumpkin (May 1), Spaghetti Squash (May 1), Watermelon (May 1), +2 more. Direct sow from: Potatoes (May 1), Sunflowers (May 15), Beans (May 22), Pole Beans (May 22). Transplant from: Calendula (May 1), Swiss Chard (May 1), Bok Choy (May 8), Cauliflower (May 8), Cosmos (May 15), Lavender (May 15), +26 more. Last frost around May 15. Last sowing dates: Celery (May 23), Watermelon (May 28). |
| June | Transplant from: Basil (Jun 5). Last sowing dates: Pepper (Jun 2), Tomatillos (Jun 2), Eggplant (Jun 7), Corn (Jun 9), Sunflowers (Jun 21), Brussel Sprouts (Jun 26), +1 more. |
| July | Last sowing dates: Basil (Jul 1), Cosmos (Jul 1), Cucumber (Jul 1), Zinnias (Jul 1), Broccoli (Jul 2), Nasturtiums (Jul 6), +13 more. |
| August | Last sowing dates: Calendula (Aug 1), Cilantro (Aug 1), Collards (Aug 5), Scallions (Aug 5), Bok Choy (Aug 6), Lettuce (Aug 6), +6 more. |
| September | Direct sow from: Garlic (Sep 27). First frost around September 27. |
| October | Last sowing dates: Garlic (Oct 18). |
| November | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Marinette, WI (ZIP 54143)?
The median last spring frost date for Marinette, WI (ZIP code 54143) is around May 15. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before April 29; one in ten it runs past May 31.
What is the first fall frost date in Marinette, WI?
The median first fall frost date for Marinette, WI is around September 27. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around September 15 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Marinette, WI?
The frost-free growing season in Marinette is about 135 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Marinette (135 frost-free days, a moderate season), 39 of 56 planner crops fit outright, 16 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Marinette, WI?
Marinette, WI is in USDA hardiness zone 5b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Marinette, WI?
Start tomatoes indoors Apr 10 and plant out May 29 in Marinette. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Marinette?
Two: plant Apr 17 and again by Aug 6; both mature before Oct 4.
When do I plant garlic in Marinette?
Sep 27 to Oct 18; it overwinters and is ready the following summer.
Which nearby ZIP has a longer season?
Menominee (ZIP 49858) has 146 frost-free days, 11 more than Marinette (ZIP 54143). See Menominee ZIP 49858 frost dates
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