Frost dates for 62358Niota, IL
The average last spring frost in Niota is April 12 and the average first fall frost is October 25, giving a typical growing season of about 194 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 12
- Average first fall frost
- Oct 25
- Growing season
- 194 days
Safer after Apr 26 (1-in-10 risk)
Possible by Oct 11 (1-in-10 risk)
Last frost typically in 164 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 10 · Apr 24 · May 7 | Oct 1 · Oct 16 · Oct 27 | 173 days | 100% |
| Frost / freeze (32°F) | Apr 1 · Apr 12 · Apr 26 | Oct 11 · Oct 25 · Nov 6 | 194 days | 100% |
| Hard freeze (28°F) | Mar 18 · Apr 3 · Apr 17 | Oct 23 · Nov 4 · Nov 18 | 215 days | 100% |
Planting calendar for Niota
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 12 – May 18 |
| Tomatoes | Transplant outdoors | Apr 28 – Jul 5 |
| Peppers | Start seeds indoors | Mar 12 – Apr 12 |
| Peppers | Transplant outdoors | May 12 – Jun 12 |
| Eggplant | Start seeds indoors | Mar 29 – Apr 27 |
| Eggplant | Transplant outdoors | May 12 – Jun 12 |
| Cucumbers | Sow outdoors | May 12 – Jul 15 |
| Summer squash | Sow outdoors | Apr 28 – Jun 12 |
| Winter squash & pumpkins | Sow outdoors | May 12 – Jun 12 |
| Snap beans | Sow outdoors | Apr 28 – Aug 7 |
| Sweet corn | Sow outdoors | Apr 28 – Jul 5 |
| Watermelon & cantaloupe | Sow outdoors | May 12 – Jun 12 |
| Okra | Sow outdoors | May 5 – May 28 |
| Peas | Sow outdoors (spring) | Mar 12 – Apr 27 |
| Potatoes | Plant outdoors (spring) | Mar 12 – May 12 |
| Onions | Start seeds indoors (spring) | Jan 29 – Feb 25 |
| Onions | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (spring) | Feb 22 – Mar 28 |
| Broccoli | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (fall) | Jun 25 – Jul 5 |
| Broccoli | Transplant outdoors (fall) | Jul 25 – Aug 5 |
| Cabbage | Start seeds indoors (spring) | Feb 12 – Mar 12 |
| Cabbage | Transplant outdoors (spring) | Mar 12 – Apr 12 |
| Cabbage | Start seeds indoors (fall) | Jun 15 – Jul 15 |
| Cabbage | Transplant outdoors (fall) | Jul 15 – Aug 15 |
| Leaf lettuce | Sow outdoors (spring) | Mar 12 – May 28 |
| Leaf lettuce | Sow outdoors (fall) | Jul 15 – Aug 31 |
| Spinach | Sow outdoors (spring) | Mar 5 – Apr 18 |
| Spinach | Sow outdoors (fall) | Aug 1 – Sep 5 |
| Radishes | Sow outdoors (spring) | Mar 12 – May 2 |
| Radishes | Sow outdoors (fall) | Jul 15 – Sep 15 |
| Kale | Sow outdoors (spring) | Mar 29 – Apr 18 |
| Kale | Sow outdoors (fall) | Jul 8 – Aug 15 |
| Carrots | Sow outdoors (spring) | Apr 12 – May 28 |
| Carrots | Sow outdoors (fall) | Jun 15 – Jul 31 |
| Garlic | Plant outdoors (fall) | Oct 15 – Nov 15 |
Where these dates come from
ZIP code 62358 is matched to the NOAA station Ft Madison, IA, 4 km away, at 530 ft elevation (84 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Ft Madison, IA (used) | 530 ft | Apr 12 | Oct 25 |
| Donnellson, IA | 705 ft | Apr 17 | Oct 22 |
| Keokuk Lock Dam 19, IA | 527 ft | Apr 10 | Oct 27 |
| Burlington 2S, IA | 690 ft | Apr 18 | Oct 20 |
Frost dates near Niota
- Fort Madison, IA 52627 · last Apr 12, first Oct 25
- Nauvoo, IL 62354 · last Apr 12, first Oct 25
- Colusa, IL 62329 · last Apr 21, first Oct 19
- Wever, IA 52658 · last Apr 12, first Oct 25
- Montrose, IA 52639 · last Apr 17, first Oct 22
- Dallas City, IL 62330 · last Apr 21, first Oct 19
- Denmark, IA 52624 · last Apr 15, first Oct 20
- West Point, IA 52656 · last Apr 17, first Oct 22
Frequently asked questions
- When is the last frost in Niota, IL?
- For ZIP code 62358, the average last spring frost (32°F) is April 12, based on NOAA 1991-2020 climate normals for the Ft Madison, IA weather station. There is a 1-in-10 chance of a frost after April 26.
- When is the first frost in Niota, IL?
- The average first fall frost (32°F) is October 25. There is a 1-in-10 chance of frost by October 11, so tender plants are at risk from that point on.
- How long is the growing season in 62358?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 194 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.