Frost dates for 63442Granger, MO
The average last spring frost in Granger is April 23 and the average first fall frost is October 17, giving a typical growing season of about 176 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 23
- Average first fall frost
- Oct 17
- Growing season
- 176 days
Safer after May 6 (1-in-10 risk)
Possible by Oct 2 (1-in-10 risk)
Last frost typically in 173 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 19 · May 3 · May 16 | Sep 21 · Oct 5 · Oct 19 | 155 days | 100% |
| Frost / freeze (32°F) | Apr 8 · Apr 23 · May 6 | Oct 2 · Oct 17 · Oct 29 | 176 days | 100% |
| Hard freeze (28°F) | Mar 27 · Apr 11 · Apr 27 | Oct 13 · Oct 26 · Nov 7 | 197 days | 100% |
Planting calendar for Granger
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 23 – May 29 |
| Tomatoes | Transplant outdoors | May 9 – Jun 27 |
| Peppers | Start seeds indoors | Mar 23 – Apr 23 |
| Peppers | Transplant outdoors | May 23 – Jun 23 |
| Eggplant | Start seeds indoors | Apr 9 – May 8 |
| Eggplant | Transplant outdoors | May 23 – Jun 23 |
| Cucumbers | Sow outdoors | May 23 – Jul 7 |
| Summer squash | Sow outdoors | May 9 – Jun 23 |
| Winter squash & pumpkins | Sow outdoors | May 23 – Jun 23 |
| Snap beans | Sow outdoors | May 9 – Jul 30 |
| Sweet corn | Sow outdoors | May 9 – Jun 27 |
| Watermelon & cantaloupe | Sow outdoors | May 23 – Jun 23 |
| Okra | Sow outdoors | May 16 – Jun 8 |
| Peas | Sow outdoors (spring) | Mar 23 – May 8 |
| Potatoes | Plant outdoors (spring) | Mar 23 – May 23 |
| Onions | Start seeds indoors (spring) | Feb 9 – Mar 8 |
| Onions | Transplant outdoors (spring) | Apr 9 – May 8 |
| Broccoli | Start seeds indoors (spring) | Mar 5 – Apr 8 |
| Broccoli | Transplant outdoors (spring) | Apr 9 – May 8 |
| Broccoli | Start seeds indoors (fall) | Jun 17 – Jun 27 |
| Broccoli | Transplant outdoors (fall) | Jul 17 – Jul 28 |
| Cabbage | Start seeds indoors (spring) | Feb 23 – Mar 23 |
| Cabbage | Transplant outdoors (spring) | Mar 23 – Apr 23 |
| Cabbage | Start seeds indoors (fall) | Jun 7 – Jul 7 |
| Cabbage | Transplant outdoors (fall) | Jul 7 – Aug 7 |
| Leaf lettuce | Sow outdoors (spring) | Mar 23 – Jun 8 |
| Leaf lettuce | Sow outdoors (fall) | Jul 7 – Aug 23 |
| Spinach | Sow outdoors (spring) | Mar 16 – Apr 29 |
| Spinach | Sow outdoors (fall) | Jul 24 – Aug 28 |
| Radishes | Sow outdoors (spring) | Mar 23 – May 13 |
| Radishes | Sow outdoors (fall) | Jul 7 – Sep 7 |
| Kale | Sow outdoors (spring) | Apr 9 – Apr 29 |
| Kale | Sow outdoors (fall) | Jun 30 – Aug 7 |
| Carrots | Sow outdoors (spring) | Apr 23 – Jun 8 |
| Carrots | Sow outdoors (fall) | Jun 7 – Jul 23 |
| Garlic | Plant outdoors (fall) | Oct 7 – Nov 7 |
Where these dates come from
ZIP code 63442 is matched to the NOAA station Memphis, MO, 3 km away, at 770 ft elevation (8 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Memphis, MO (used) | 770 ft | Apr 23 | Oct 17 |
| Keosauqua, IA | 629 ft | Apr 26 | Oct 13 |
| Bloomfield, IA | 858 ft | Apr 16 | Oct 22 |
| Kirksville, MO | 970 ft | Apr 21 | Oct 19 |
Frost dates near Granger
- Memphis, MO 63555 · last Apr 23, first Oct 17
- Arbela, MO 63432 · last Apr 23, first Oct 17
- Rutledge, MO 63563 · last Apr 23, first Oct 17
- Gorin, MO 63543 · last Apr 23, first Oct 17
- Downing, MO 63536 · last Apr 23, first Oct 17
- Luray, MO 63453 · last Apr 23, first Oct 17
- Wyaconda, MO 63474 · last Apr 23, first Oct 17
- Baring, MO 63531 · last Apr 23, first Oct 17
Frequently asked questions
- When is the last frost in Granger, MO?
- For ZIP code 63442, the average last spring frost (32°F) is April 23, based on NOAA 1991-2020 climate normals for the Memphis, MO weather station. There is a 1-in-10 chance of a frost after May 6.
- When is the first frost in Granger, MO?
- The average first fall frost (32°F) is October 17. There is a 1-in-10 chance of frost by October 2, so tender plants are at risk from that point on.
- How long is the growing season in 63442?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 176 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.