Frost dates for 55007Brook Park, MN
The average last spring frost in Brook Park is May 16 and the average first fall frost is September 24, giving a typical growing season of about 130 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 16
- Average first fall frost
- Sep 24
- Growing season
- 130 days
Safer after May 30 (1-in-10 risk)
Possible by Sep 9 (1-in-10 risk)
Last frost typically in 198 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 15 · May 28 · Jun 9 | Aug 31 · Sep 15 · Sep 29 | 111 days | 100% |
| Frost / freeze (32°F) | May 3 · May 16 · May 30 | Sep 9 · Sep 24 · Oct 6 | 130 days | 100% |
| Hard freeze (28°F) | Apr 21 · May 4 · May 20 | Sep 16 · Oct 2 · Oct 17 | 150 days | 100% |
Planting calendar for Brook Park
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 15 – Jun 21 |
| Tomatoes | Transplant outdoors | Jun 1 – Jun 4 |
| Peppers | Start seeds indoors | Apr 15 – May 16 |
| Peppers | Transplant outdoors | Jun 15 – Jul 16 |
| Eggplant | Start seeds indoors | May 2 – May 31 |
| Eggplant | Transplant outdoors | Jun 15 – Jul 16 |
| Cucumbers | Sow outdoors | Jun 15 – Jun 14 |
| Summer squash | Sow outdoors | Jun 1 – Jul 16 |
| Winter squash & pumpkins | Sow outdoors | Jun 15 – Jul 16 |
| Snap beans | Sow outdoors | Jun 1 – Jul 7 |
| Sweet corn | Sow outdoors | Jun 1 – Jun 4 |
| Watermelon & cantaloupe | Sow outdoors | Jun 15 – Jul 16 |
| Okra | Sow outdoors | Jun 8 – Jul 1 |
| Peas | Sow outdoors (spring) | Apr 15 – May 31 |
| Potatoes | Plant outdoors (spring) | Apr 15 – Jun 15 |
| Onions | Start seeds indoors (spring) | Mar 4 – Mar 31 |
| Onions | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (spring) | Mar 28 – May 1 |
| Broccoli | Transplant outdoors (spring) | May 2 – May 31 |
| Broccoli | Start seeds indoors (fall) | May 25 – Jun 4 |
| Broccoli | Transplant outdoors (fall) | Jun 24 – Jul 5 |
| Cabbage | Start seeds indoors (spring) | Mar 18 – Apr 15 |
| Cabbage | Transplant outdoors (spring) | Apr 15 – May 16 |
| Cabbage | Start seeds indoors (fall) | May 15 – Jun 14 |
| Cabbage | Transplant outdoors (fall) | Jun 14 – Jul 15 |
| Leaf lettuce | Sow outdoors (spring) | Apr 15 – Jul 1 |
| Leaf lettuce | Sow outdoors (fall) | Jun 14 – Jul 31 |
| Spinach | Sow outdoors (spring) | Apr 8 – May 22 |
| Spinach | Sow outdoors (fall) | Jul 1 – Aug 5 |
| Radishes | Sow outdoors (spring) | Apr 15 – Jun 5 |
| Radishes | Sow outdoors (fall) | Jun 14 – Aug 15 |
| Kale | Sow outdoors (spring) | May 2 – May 22 |
| Kale | Sow outdoors (fall) | Jun 7 – Jul 15 |
| Carrots | Sow outdoors (spring) | May 16 – Jul 1 |
| Carrots | Sow outdoors (fall) | May 15 – Jun 30 |
| Garlic | Plant outdoors (fall) | Sep 14 – Oct 15 |
Where these dates come from
ZIP code 55007 is matched to the NOAA station Hinckley, MN, 8 km away, at 1,035 ft elevation (11 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Hinckley, MN (used) | 1,035 ft | May 16 | Sep 24 |
| Sandstone 6 W, MN | 1,130 ft | May 13 | Sep 29 |
| Mora, MN | 1,018 ft | May 9 | Sep 30 |
| Grantsburg, WI | 990 ft | May 11 | Oct 1 |
Frost dates near Brook Park
- Henriette, MN 55036 · last May 9, first Sep 30
- Grasston, MN 55030 · last May 16, first Sep 24
- Hinckley, MN 55037 · last May 16, first Sep 24
- Mora, MN 55051 · last May 9, first Sep 30
- Pine City, MN 55063 · last May 11, first Oct 1
- Rock Creek, MN 55067 · last May 11, first Oct 1
- Braham, MN 55006 · last May 2, first Oct 4
- Ogilvie, MN 56358 · last May 9, first Sep 30
Frequently asked questions
- When is the last frost in Brook Park, MN?
- For ZIP code 55007, the average last spring frost (32°F) is May 16, based on NOAA 1991-2020 climate normals for the Hinckley, MN weather station. There is a 1-in-10 chance of a frost after May 30.
- When is the first frost in Brook Park, MN?
- The average first fall frost (32°F) is September 24. There is a 1-in-10 chance of frost by September 9, so tender plants are at risk from that point on.
- How long is the growing season in 55007?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 130 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.