Williamston, North Carolina Weather
Fireflies pulse through the magnolias. Day 78 of spring. Read this microseason across nine climate regions →
Williamston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Partly Cloudy——85°51°—
- FridayJun 5Overcast——92°61°+7°
- SaturdayJun 6Overcast——91°66°-1°
- SundayJun 7Light Drizzle20%—92°70°+1°
- MondayJun 8Drizzle25%—83°61°-9°
- TuesdayJun 9Overcast14%—84°59°+1°
- WednesdayJun 10Overcast11%—85°64°+1°
Ozone at AQI 48 now. AQI up 41 in the last 6 hours — air quality is degrading. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 48 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 by mid-afternoon.
- Present
- AQI 48
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 5.3 µg/m³ (AQI 29) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 3:57 AM
- Moonset
- 2:22 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Williamston at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: March 22 (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 5, 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
Williamston's warmest month is July (~80°F mean) and its coldest is January (~43°F). Rainfall peaks in September (6.9 inches) and bottoms out in February (3.2 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 43° | 3.7″ | 7 |
| February | 45° | 3.2″ | 6 |
| March | 52° | 4.1″ | 7 |
| April | 61° | 3.7″ | 6 |
| May | 69° | 3.7″ | 7 |
| June | 76° | 5.1″ | 7 |
| July | 80° | 5.8″ | 8 |
| August | 78° | 5.7″ | 7 |
| September | 73° | 6.9″ | 8 |
| October | 63° | 4.3″ | 5 |
| November | 53° | 3.4″ | 6 |
| December | 46° | 3.6″ | 7 |
Regional context
Williamston's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 43°F to a July mean of 80°F — a 37°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 53.2 inches spread across roughly 81 days with measurable rain or snow each year.
Precipitation runs summer-dominant here: September averages 6.9 inches across 7.6 days with measurable rain, driven mostly by warm-season storms and thunderstorm activity, while February drops to just 3.2 inches across 6.3 rainy days under drier cool-season air. The warm-season-wet rhythm lines Williamston up with places like Everetts, NC, Bear Grass, NC and Jamesville, NC, where the May-September stretch delivers the bulk of the year's precipitation.
The frost-sensitive growing window opens around mid-March, when overnight lows reliably clear freezing for cool-season crops like peas, lettuce, spinach, and radishes. Heat-loving transplants like tomatoes, peppers, and squash generally hold off for another 10-14 days to clear the last spring frost risk window. The window closes around mid-December, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. These dates represent 30-year central tendencies; actual year-to-year variation can shift either bookend by 7-14 days, and local microclimate features within Williamston — cold-air drainage on calm clear nights, slope aspect, distance from any nearby lake or river — can push the practical frost window earlier or later than the regional average.
Similar climates: Everetts, NC, Bear Grass, NC, Jamesville, NC, Hamilton, NC, Robersonville, NC.
Frequently asked
- When does it freeze in Williamston?
- Williamston's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Williamston?
- September is the wettest month with about 6.9 inches of rain on average; the city receives roughly 53 inches annually.
- What is the warmest month in Williamston?
- July is typically warmest, averaging about 80°F.
- What is the coldest month in Williamston?
- January is typically coldest, averaging about 43°F.
- When can I start a vegetable garden in Williamston?
- 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 Williamston get?
- Williamston averages about 81 rainy days per year.
- What hardiness zone is Williamston?
- Williamston'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
Williamston, North Carolina sits in a humid subtropical climate zone. January means hover near 43°F while July averages 80°F — a 37°F seasonal swing.
Across the year, Williamston receives about 53 inches of precipitation spread over roughly 81 rainy days.
The rhythm of the year is set by latitude (35.8°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.