USDA Hardiness Zone 9b
Frost Dates for 97411 — Bandon, Oregon
NOAA 1991–2020 normals from Bandon 2 NNE, OR (23 ft), 3 miles north.
Updated
In Bandon, the last spring frost (32°F) is around March 9 in half of years and has passed by April 7 in nine years out of ten. The first fall frost comes around November 27, as early as November 1 one year in ten, leaving a typical freeze-free season of 260 days (NOAA, Bandon 2 NNE, OR).
- Last spring frost
- March 9
- First fall frost
- November 27
- Growing season
- 260 days
- Hardiness zone
- 9b
50% probability
50% probability
freeze-free, 50%
25 to 30°F (-3.9 to -1.1°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 12%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
3 of 26 observed
NOAA normal
Frost risk by date in Bandon
Half of springs at Bandon 2 NNE, OR see their last 32°F night by March 9; only one in ten is past it by January 31, and one in ten still has one after April 7. Planting tender crops after March 25 leaves a 30% risk of a frost on them, after March 31 20%, and after April 7 10%. The 29 days between the even-odds date and the one-in-ten date is wider than at 82% of the 103 Oregon stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.
In fall the first 32°F night comes by November 27 in half of years, as early as November 1 one year in ten, and holds off past January 8 one year in ten. A hard freeze of 28°F follows 22 days later, around December 19; in spring the one-in-ten date for 28°F is March 1, 37 days before the 32°F one. The freeze-free season lasts 260 days in a typical year, longer than at 90% of the 103 Oregon stations; it reaches 309 days one year in ten and falls short of 220 one year in ten. On average 21 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 40 days longer, to about April 18, and return around November 1. A 24°F night is unusual: 22% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 28 | Apr 2 | Apr 8 | Apr 14 | Apr 18 | Apr 24 | Apr 28 | May 1 | May 9 |
| 32°F | Jan 31 | Feb 17 | Feb 25 | Mar 1 | Mar 9 | Mar 18 | Mar 25 | Mar 31 | Apr 7 |
| 28°F74% of yrs | Dec 6 | Dec 22 | Jan 4 | Jan 19 | Jan 29 | Feb 6 | Feb 16 | Feb 22 | Mar 1 |
| 24°F22% of yrs | too rare for a date | ||||||||
| 20°F4% of yrs | too rare for a date | ||||||||
| 16°F1% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 7 | Oct 16 | Oct 22 | Oct 27 | Nov 1 | Nov 4 | Nov 10 | Nov 17 | Nov 27 |
| 32°F | Nov 1 | Nov 7 | Nov 14 | Nov 21 | Nov 27 | Dec 1 | Dec 7 | Dec 19 | Jan 8 |
| 28°F74% of yrs | Nov 17 | Nov 29 | Dec 5 | Dec 10 | Dec 19 | Jan 1 | Jan 11 | Jan 28 | Feb 16 |
| 24°F22% of yrs | too rare for a date | ||||||||
| 20°F4% of yrs | too rare for a date | ||||||||
| 16°F1% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Bandon 2 NNE, OR, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 97411 →Compare Bandon with another place →
Weather by month in Bandon
August is the warmest month at Bandon 2 NNE, OR, averaging 69°F by day and 53°F at night; December is the coldest at 55°F and 40°F. From May to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 72% of years and March still brings one in 51% of years and April still brings one in 19% of years.
Warmth for growing adds up to 1,686 growing degree days a year (base 50°F), fewer than at 81% of the 103 Oregon stations. 31% of them (519) have built up by the end of June, and August adds the most, 329. Precipitation totals 57.9 inches a year, most in December (9.8") and least in July (0.4"); May to September bring 12% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 55 | 40 | 9.3 | 68% | 5 | 31 |
| Feb | 56 | 40 | 7.2 | 72% | 5 | 30 |
| Mar | 56 | 41 | 7.4 | 51% | 3 | 34 |
| Apr | 58 | 43 | 5.2 | 19% | 1 | 53 |
| May | 62 | 47 | 3.0 | 0% | 0 | 140 |
| Jun | 65 | 50 | 1.5 | 0% | 0 | 230 |
| Jul | 68 | 53 | 0.4 | 0% | 0 | 324 |
| Aug | 69 | 53 | 0.5 | 0% | 0 | 329 |
| Sep | 68 | 50 | 1.4 | 0% | 0 | 261 |
| Oct | 64 | 46 | 4.0 | 9% | <1 | 162 |
| Nov | 58 | 43 | 8.2 | 53% | 3 | 63 |
| Dec | 55 | 40 | 9.8 | 72% | 5 | 28 |
Monthly normals 1991–2020 at Bandon 2 NNE, OR (23 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Coquille City, OR, 11 miles northeast of Bandon, has a last frost 19 days later (March 28), a first frost 21 days earlier (November 6), a season 35 days shorter.
When it snows in Bandon, Oregon
Measurable snow is rare here: only 3 of 26 winters from 1991 to 2020 recorded 0.1 inch or more at Bandon 2 NNE, OR, 2.5 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 97411
| When | What to do |
|---|---|
| December 29 – January 12 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 12 – January 26 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 9 – February 23 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 9 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by September 4 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by November 13 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 27 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 97411 is 3 miles from Bandon 2 NNE, OR, which stands at 23 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 97411 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.