Weather in Castle Hayne, North Carolina
Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Overcast—81°52°
- SundayMay 17Overcast—89°61°
- MondayMay 18Mostly Clear—88°64°
- TuesdayMay 19Clear—87°64°
- WednesdayMay 20Clear—90°65°
- ThursdayMay 21Light Drizzle32%88°69°
- FridayMay 22Overcast65%85°67°
- PM 2.5
- 8.6 μg/m³
- PM 10
- 11.4 μg/m³
- NO₂
- 2.7 μg/m³
- Ozone
- 92.0 μg/m³
- UV Index
- 0.0 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 10:19 AM
- Moonset
- 12:29 AM
- In sign
- ♉︎ Taurus
Roses open on the Piedmont edge
Castle Hayne at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: March 13 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Peak growing season
As of May 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Castle Hayne's warmest month is July (~82°F mean) and its coldest is January (~47°F). Rainfall peaks in September (8.7 inches) and bottoms out in April (3.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 47° | 3.8″ | 6 |
| February | 49° | 3.5″ | 6 |
| March | 55° | 4.0″ | 6 |
| April | 64° | 3.1″ | 5 |
| May | 71° | 4.5″ | 6 |
| June | 78° | 5.7″ | 7 |
| July | 82° | 6.9″ | 9 |
| August | 80° | 8.2″ | 10 |
| September | 75° | 8.7″ | 7 |
| October | 66° | 4.7″ | 5 |
| November | 56° | 3.6″ | 5 |
| December | 50° | 3.7″ | 6 |
Frequently asked
- When does it freeze in Castle Hayne?
- Castle Hayne's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Castle Hayne?
- September is the wettest month with about 8.7 inches of rain on average; the city receives roughly 60 inches annually.
- What is the warmest month in Castle Hayne?
- July is typically warmest, averaging about 82°F.
- What is the coldest month in Castle Hayne?
- January is typically coldest, averaging about 47°F.
- When can I start a vegetable garden in Castle Hayne?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Castle Hayne get?
- Castle Hayne averages about 79 rainy days per year.
- What hardiness zone is Castle Hayne?
- Castle Hayne's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Castle Hayne, North Carolina sits in a humid subtropical climate zone. January means hover near 47°F while July averages 82°F — a 35°F seasonal swing.
Across the year, Castle Hayne receives about 60 inches of precipitation spread over roughly 79 rainy days.
The rhythm of the year is set by latitude (34.4°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.