Smithfield, Virginia Weather
Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →
Smithfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——81°50°—
- ThursdayJun 4Overcast——87°54°+6°
- FridayJun 5Overcast——89°62°+2°
- SaturdayJun 6Overcast——90°66°+1°
- SundayJun 7Heavy Drizzle49%0.02″94°69°+4°
- MondayJun 8Light Drizzle49%—73°60°-21°
- TuesdayJun 9Mostly Clear16%—74°57°+1°
Ozone at AQI 71 now. AQI up 13 over the last 6 hours (gradual rise). With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 74 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 71 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 74 by mid-afternoon.
- Present
- AQI 71
- UV peak
- 7.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 74
PM × Wind × Precip
PM2.5 at 9.1 µg/m³, PM10 at 11.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.78
- 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
- 2:46 AM
- Moonset
- 12:13 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Smithfield at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: March 29 (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 | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Smithfield's warmest month is July (~79°F mean) and its coldest is January (~40°F). Rainfall peaks in August (5.4 inches) and bottoms out in February (2.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 40° | 3.0″ | 5 |
| February | 42° | 2.6″ | 6 |
| March | 49° | 3.4″ | 6 |
| April | 58° | 3.1″ | 6 |
| May | 67° | 3.7″ | 7 |
| June | 75° | 4.1″ | 7 |
| July | 79° | 4.7″ | 7 |
| August | 77° | 5.4″ | 7 |
| September | 72° | 5.0″ | 5 |
| October | 61° | 4.2″ | 6 |
| November | 51° | 3.0″ | 5 |
| December | 43° | 3.2″ | 6 |
Regional context
Smithfield sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Virginia Beach, VA, Richmond, VA, Chesapeake, VA, Norfolk, VA, Roanoke, VA.
Frequently asked
- When does it freeze in Smithfield?
- Smithfield's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Smithfield?
- August is the wettest month with about 5.4 inches of rain on average; the city receives roughly 45 inches annually.
- What is the warmest month in Smithfield?
- July is typically warmest, averaging about 79°F.
- What is the coldest month in Smithfield?
- January is typically coldest, averaging about 40°F.
- When can I start a vegetable garden in Smithfield?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Smithfield get?
- Smithfield averages about 73 rainy days per year.
- What hardiness zone is Smithfield?
- Smithfield'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
Smithfield, Virginia sits in a humid subtropical climate zone. January means hover near 40°F while July averages 79°F — a 39°F seasonal swing.
Across the year, Smithfield receives about 45 inches of precipitation spread over roughly 73 rainy days.
The rhythm of the year is set by latitude (37.0°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.