Frost dates for 59201Wolf Point, MT
The average last spring frost in Wolf Point is May 8 and the average first fall frost is September 28, giving a typical growing season of about 143 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 8
- Average first fall frost
- Sep 28
- Growing season
- 143 days
Safer after May 20 (1-in-10 risk)
Possible by Sep 15 (1-in-10 risk)
Last frost typically in 193 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 7 · May 18 · May 30 | Sep 7 · Sep 20 · Oct 1 | 124 days | 100% |
| Frost / freeze (32°F) | Apr 25 · May 8 · May 20 | Sep 15 · Sep 28 · Oct 11 | 143 days | 100% |
| Hard freeze (28°F) | Apr 14 · Apr 29 · May 11 | Sep 21 · Oct 7 · Oct 23 | 162 days | 100% |
Planting calendar for Wolf Point
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 7 – Jun 13 |
| Tomatoes | Transplant outdoors | May 24 – Jun 8 |
| Peppers | Start seeds indoors | Apr 7 – May 8 |
| Peppers | Transplant outdoors | Jun 7 – Jul 8 |
| Eggplant | Start seeds indoors | Apr 24 – May 23 |
| Eggplant | Transplant outdoors | Jun 7 – Jul 8 |
| Cucumbers | Sow outdoors | Jun 7 – Jun 18 |
| Summer squash | Sow outdoors | May 24 – Jul 8 |
| Winter squash & pumpkins | Sow outdoors | Jun 7 – Jul 8 |
| Snap beans | Sow outdoors | May 24 – Jul 11 |
| Sweet corn | Sow outdoors | May 24 – Jun 8 |
| Watermelon & cantaloupe | Sow outdoors | Jun 7 – Jul 8 |
| Okra | Sow outdoors | May 31 – Jun 23 |
| Peas | Sow outdoors (spring) | Apr 7 – May 23 |
| Potatoes | Plant outdoors (spring) | Apr 7 – Jun 7 |
| Onions | Start seeds indoors (spring) | Feb 24 – Mar 23 |
| Onions | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (spring) | Mar 20 – Apr 23 |
| Broccoli | Transplant outdoors (spring) | Apr 24 – May 23 |
| Broccoli | Start seeds indoors (fall) | May 29 – Jun 8 |
| Broccoli | Transplant outdoors (fall) | Jun 28 – Jul 9 |
| Cabbage | Start seeds indoors (spring) | Mar 10 – Apr 7 |
| Cabbage | Transplant outdoors (spring) | Apr 7 – May 8 |
| Cabbage | Start seeds indoors (fall) | May 19 – Jun 18 |
| Cabbage | Transplant outdoors (fall) | Jun 18 – Jul 19 |
| Leaf lettuce | Sow outdoors (spring) | Apr 7 – Jun 23 |
| Leaf lettuce | Sow outdoors (fall) | Jun 18 – Aug 4 |
| Spinach | Sow outdoors (spring) | Mar 31 – May 14 |
| Spinach | Sow outdoors (fall) | Jul 5 – Aug 9 |
| Radishes | Sow outdoors (spring) | Apr 7 – May 28 |
| Radishes | Sow outdoors (fall) | Jun 18 – Aug 19 |
| Kale | Sow outdoors (spring) | Apr 24 – May 14 |
| Kale | Sow outdoors (fall) | Jun 11 – Jul 19 |
| Carrots | Sow outdoors (spring) | May 8 – Jun 23 |
| Carrots | Sow outdoors (fall) | May 19 – Jul 4 |
| Garlic | Plant outdoors (fall) | Sep 18 – Oct 19 |
Where these dates come from
ZIP code 59201 is matched to the NOAA station Wolf Pt, MT, 1.9 km away, at 2,090 ft elevation (56 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wolf Pt, MT (used) | 2,090 ft | May 8 | Sep 28 |
| Wolf Point Intl Ap, MT | 1,986 ft | May 16 | Sep 20 |
| Vida 6 Ne, MT | 2,284 ft | May 16 | Sep 22 |
| Wolf Point 29 Ene, MT | 2,085 ft | May 24 | Sep 14 |
Frost dates near Wolf Point
- Vida, MT 59274 · last May 16, first Sep 22
- Poplar, MT 59255 · last May 24, first Sep 14
- Frazer, MT 59225 · last May 13, first Sep 27
- Nashua, MT 59248 · last May 12, first Sep 24
- Brockton, MT 59213 · last May 24, first Sep 14
- Fort Peck, MT 59223 · last May 8, first Oct 1
- Richland, MT 59260 · last Jun 5, first Sep 2
- Richey, MT 59259 · last May 16, first Sep 22
Frequently asked questions
- When is the last frost in Wolf Point, MT?
- For ZIP code 59201, the average last spring frost (32°F) is May 8, based on NOAA 1991-2020 climate normals for the Wolf Pt, MT weather station. There is a 1-in-10 chance of a frost after May 20.
- When is the first frost in Wolf Point, MT?
- The average first fall frost (32°F) is September 28. There is a 1-in-10 chance of frost by September 15, so tender plants are at risk from that point on.
- How long is the growing season in 59201?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 143 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.