Frost dates for 55964Plainview, MN
The average last spring frost in Plainview is May 7 and the average first fall frost is October 2, giving a typical growing season of about 148 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 7
- Average first fall frost
- Oct 2
- Growing season
- 148 days
Safer after May 22 (1-in-10 risk)
Possible by Sep 20 (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 4 · May 16 · May 30 | Sep 12 · Sep 26 · Oct 6 | 131 days | 100% |
| Frost / freeze (32°F) | Apr 24 · May 7 · May 22 | Sep 20 · Oct 2 · Oct 15 | 148 days | 100% |
| Hard freeze (28°F) | Apr 13 · Apr 28 · May 12 | Sep 27 · Oct 12 · Oct 25 | 167 days | 100% |
Planting calendar for Plainview
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 6 – Jun 12 |
| Tomatoes | Transplant outdoors | May 23 – Jun 12 |
| Peppers | Start seeds indoors | Apr 6 – May 7 |
| Peppers | Transplant outdoors | Jun 6 – Jul 7 |
| Eggplant | Start seeds indoors | Apr 23 – May 22 |
| Eggplant | Transplant outdoors | Jun 6 – Jul 7 |
| Cucumbers | Sow outdoors | Jun 6 – Jun 22 |
| Summer squash | Sow outdoors | May 23 – Jul 7 |
| Winter squash & pumpkins | Sow outdoors | Jun 6 – Jul 7 |
| Snap beans | Sow outdoors | May 23 – Jul 15 |
| Sweet corn | Sow outdoors | May 23 – Jun 12 |
| Watermelon & cantaloupe | Sow outdoors | Jun 6 – Jul 7 |
| Okra | Sow outdoors | May 30 – Jun 22 |
| Peas | Sow outdoors (spring) | Apr 6 – May 22 |
| Potatoes | Plant outdoors (spring) | Apr 6 – Jun 6 |
| Onions | Start seeds indoors (spring) | Feb 23 – Mar 22 |
| Onions | Transplant outdoors (spring) | Apr 23 – May 22 |
| Broccoli | Start seeds indoors (spring) | Mar 19 – Apr 22 |
| Broccoli | Transplant outdoors (spring) | Apr 23 – May 22 |
| Broccoli | Start seeds indoors (fall) | Jun 2 – Jun 12 |
| Broccoli | Transplant outdoors (fall) | Jul 2 – Jul 13 |
| Cabbage | Start seeds indoors (spring) | Mar 9 – Apr 6 |
| Cabbage | Transplant outdoors (spring) | Apr 6 – May 7 |
| Cabbage | Start seeds indoors (fall) | May 23 – Jun 22 |
| Cabbage | Transplant outdoors (fall) | Jun 22 – Jul 23 |
| Leaf lettuce | Sow outdoors (spring) | Apr 6 – Jun 22 |
| Leaf lettuce | Sow outdoors (fall) | Jun 22 – Aug 8 |
| Spinach | Sow outdoors (spring) | Mar 30 – May 13 |
| Spinach | Sow outdoors (fall) | Jul 9 – Aug 13 |
| Radishes | Sow outdoors (spring) | Apr 6 – May 27 |
| Radishes | Sow outdoors (fall) | Jun 22 – Aug 23 |
| Kale | Sow outdoors (spring) | Apr 23 – May 13 |
| Kale | Sow outdoors (fall) | Jun 15 – Jul 23 |
| Carrots | Sow outdoors (spring) | May 7 – Jun 22 |
| Carrots | Sow outdoors (fall) | May 23 – Jul 8 |
| Garlic | Plant outdoors (fall) | Sep 22 – Oct 23 |
Where these dates come from
ZIP code 55964 is matched to the NOAA station Theilman 1Ssw, MN, 13.3 km away, at 753 ft elevation (405 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Theilman 1Ssw, MN (used) | 753 ft | May 7 | Oct 2 |
| Alma Dam 4, WI | 670 ft | Apr 28 | Oct 14 |
| Minnesota City Dam 5, MN | 670 ft | Apr 23 | Oct 16 |
| Byron 4North, MN | 1,041 ft | May 12 | Sep 28 |
Frost dates near Plainview
- Elgin, MN 55932 · last May 7, first Oct 2
- Millville, MN 55957 · last May 7, first Oct 2
- Kellogg, MN 55945 · last May 7, first Oct 2
- Altura, MN 55910 · last Apr 23, first Oct 16
- Dover, MN 55929 · last Apr 30, first Oct 6
- Eyota, MN 55934 · last Apr 30, first Oct 6
- Rochester, MN 55906 · last May 12, first Sep 28
- Zumbro Falls, MN 55991 · last May 9, first Sep 30
Frequently asked questions
- When is the last frost in Plainview, MN?
- For ZIP code 55964, the average last spring frost (32°F) is May 7, based on NOAA 1991-2020 climate normals for the Theilman 1Ssw, MN weather station. There is a 1-in-10 chance of a frost after May 22.
- When is the first frost in Plainview, MN?
- The average first fall frost (32°F) is October 2. There is a 1-in-10 chance of frost by September 20, so tender plants are at risk from that point on.
- How long is the growing season in 55964?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 148 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.