Castle Hayne, North Carolina Weather
Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →
Castle Hayne weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Mostly Clear——81°50°—
- ThursdayJun 4Clear——86°55°+5°
- FridayJun 5Overcast——89°59°+3°
- SaturdayJun 6Overcast——91°64°+2°
- SundayJun 7Overcast——94°67°+3°
- MondayJun 8Light Drizzle57%—85°66°-9°
- TuesdayJun 9Mostly Clear27%—83°57°-2°
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. AQI up 21 in the last 6 hours — air quality is degrading. Levels should ease through evening.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 0.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 500
PM × Wind × Precip
PM2.5 at 7.7 µg/m³, PM10 at 9.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.80
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 2:43 AM
- Moonset
- 12:27 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Castle Hayne at a glance
- Today vs. normal: 80°F — typical for the season
- Last frost: March 13 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, 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.