Prairie Grove, Arkansas Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Prairie Grove weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast15%—83°64°—
- FridayJun 5Overcast24%—86°67°+3°
- SaturdayJun 6Light Showers39%0.09″73°65°-13°
- SundayJun 7Showers72%0.01″80°66°+7°
- MondayJun 8Light Drizzle45%—88°69°+8°
- TuesdayJun 9Mostly Clear23%—90°72°+2°
- WednesdayJun 10Mostly Clear——90°72°0°
PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust. AQI flat over the last 6 hours (within ±3 points).
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 38. Overcast through the UV peak window (cloud cover ~90%) — afternoon ozone should stay flat.
- Present
- AQI 38
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- Wind
- calm
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:35 AM
- Moonset
- 2:31 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Prairie Grove at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: March 23 (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 4, 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.
SPC Convective Outlook
Storm Prediction Center — Prairie Grove
SPC has placed Prairie Grove in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
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
Prairie Grove's warmest month is July (~79°F mean) and its coldest is January (~37°F). Rainfall peaks in May (6.0 inches) and bottoms out in February (2.3 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 37° | 2.6″ | 3 |
| February | 41° | 2.3″ | 4 |
| March | 49° | 3.7″ | 5 |
| April | 58° | 4.5″ | 6 |
| May | 66° | 6.0″ | 8 |
| June | 75° | 4.7″ | 6 |
| July | 79° | 3.6″ | 5 |
| August | 78° | 3.4″ | 5 |
| September | 71° | 4.5″ | 5 |
| October | 59° | 4.0″ | 5 |
| November | 48° | 4.0″ | 5 |
| December | 40° | 2.9″ | 4 |
Regional context
Prairie Grove sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Little Rock, AR, Fayetteville, AR, Fort Smith, AR, Springdale, AR, Jonesboro, AR.
Frequently asked
- When does it freeze in Prairie Grove?
- Prairie Grove's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Prairie Grove?
- May is the wettest month with about 6.0 inches of rain on average; the city receives roughly 46 inches annually.
- What is the warmest month in Prairie Grove?
- July is typically warmest, averaging about 79°F.
- What is the coldest month in Prairie Grove?
- January is typically coldest, averaging about 37°F.
- When can I start a vegetable garden in Prairie Grove?
- 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 Prairie Grove get?
- Prairie Grove averages about 62 rainy days per year.
- What hardiness zone is Prairie Grove?
- Prairie Grove'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
Prairie Grove, Arkansas sits in a humid subtropical climate zone. January means hover near 37°F while July averages 79°F — a 42°F seasonal swing.
Across the year, Prairie Grove receives about 46 inches of precipitation spread over roughly 62 rainy days.
The rhythm of the year is set by latitude (36.0°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.