Frost dates for 61484Vermont, IL
The average last spring frost in Vermont is April 16 and the average first fall frost is October 23, giving a typical growing season of about 189 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 16
- Average first fall frost
- Oct 23
- Growing season
- 189 days
Safer after May 3 (1-in-10 risk)
Possible by Oct 10 (1-in-10 risk)
Last frost typically in 168 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) | Apr 12 · Apr 28 · May 14 | Sep 29 · Oct 13 · Oct 24 | 167 days | 100% |
| Frost / freeze (32°F) | Apr 2 · Apr 16 · May 3 | Oct 10 · Oct 23 · Nov 3 | 189 days | 100% |
| Hard freeze (28°F) | Mar 19 · Apr 4 · Apr 21 | Oct 20 · Nov 1 · Nov 15 | 211 days | 100% |
Planting calendar for Vermont
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 | Mar 16 – May 22 |
| Tomatoes | Transplant outdoors | May 2 – Jul 3 |
| Peppers | Start seeds indoors | Mar 16 – Apr 16 |
| Peppers | Transplant outdoors | May 16 – Jun 16 |
| Eggplant | Start seeds indoors | Apr 2 – May 1 |
| Eggplant | Transplant outdoors | May 16 – Jun 16 |
| Cucumbers | Sow outdoors | May 16 – Jul 13 |
| Summer squash | Sow outdoors | May 2 – Jun 16 |
| Winter squash & pumpkins | Sow outdoors | May 16 – Jun 16 |
| Snap beans | Sow outdoors | May 2 – Aug 5 |
| Sweet corn | Sow outdoors | May 2 – Jul 3 |
| Watermelon & cantaloupe | Sow outdoors | May 16 – Jun 16 |
| Okra | Sow outdoors | May 9 – Jun 1 |
| Peas | Sow outdoors (spring) | Mar 16 – May 1 |
| Potatoes | Plant outdoors (spring) | Mar 16 – May 16 |
| Onions | Start seeds indoors (spring) | Feb 2 – Mar 1 |
| Onions | Transplant outdoors (spring) | Apr 2 – May 1 |
| Broccoli | Start seeds indoors (spring) | Feb 26 – Apr 1 |
| Broccoli | Transplant outdoors (spring) | Apr 2 – May 1 |
| Broccoli | Start seeds indoors (fall) | Jun 23 – Jul 3 |
| Broccoli | Transplant outdoors (fall) | Jul 23 – Aug 3 |
| Cabbage | Start seeds indoors (spring) | Feb 16 – Mar 16 |
| Cabbage | Transplant outdoors (spring) | Mar 16 – Apr 16 |
| Cabbage | Start seeds indoors (fall) | Jun 13 – Jul 13 |
| Cabbage | Transplant outdoors (fall) | Jul 13 – Aug 13 |
| Leaf lettuce | Sow outdoors (spring) | Mar 16 – Jun 1 |
| Leaf lettuce | Sow outdoors (fall) | Jul 13 – Aug 29 |
| Spinach | Sow outdoors (spring) | Mar 9 – Apr 22 |
| Spinach | Sow outdoors (fall) | Jul 30 – Sep 3 |
| Radishes | Sow outdoors (spring) | Mar 16 – May 6 |
| Radishes | Sow outdoors (fall) | Jul 13 – Sep 13 |
| Kale | Sow outdoors (spring) | Apr 2 – Apr 22 |
| Kale | Sow outdoors (fall) | Jul 6 – Aug 13 |
| Carrots | Sow outdoors (spring) | Apr 16 – Jun 1 |
| Carrots | Sow outdoors (fall) | Jun 13 – Jul 29 |
| Garlic | Plant outdoors (fall) | Oct 13 – Nov 13 |
Where these dates come from
ZIP code 61484 is matched to the NOAA station Rushville, IL, 23 km away, at 673 ft elevation (13 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Rushville, IL (used) | 673 ft | Apr 16 | Oct 23 |
| Havana, IL | 463 ft | Apr 17 | Oct 19 |
| Prairie City 2S, IL | 650 ft | Apr 17 | Oct 22 |
| Avon, IL | 640 ft | Apr 22 | Oct 19 |
Frost dates near Vermont
- Table Grove, IL 61482 · last Apr 17, first Oct 22
- Astoria, IL 61501 · last Apr 16, first Oct 23
- Adair, IL 61411 · last Apr 17, first Oct 22
- Ipava, IL 61441 · last Apr 17, first Oct 22
- Industry, IL 61440 · last Apr 16, first Oct 23
- Littleton, IL 61452 · last Apr 16, first Oct 23
- Browning, IL 62624 · last Apr 16, first Oct 23
- Marietta, IL 61459 · last Apr 17, first Oct 22
Frequently asked questions
- When is the last frost in Vermont, IL?
- For ZIP code 61484, the average last spring frost (32°F) is April 16, based on NOAA 1991-2020 climate normals for the Rushville, IL weather station. There is a 1-in-10 chance of a frost after May 3.
- When is the first frost in Vermont, IL?
- The average first fall frost (32°F) is October 23. There is a 1-in-10 chance of frost by October 10, so tender plants are at risk from that point on.
- How long is the growing season in 61484?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 189 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.