Port Allen, Louisiana Weather
Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →
Port Allen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Heavy Showers59%1.6″85°73°—
- ThursdayJun 4Overcast26%—81°70°-4°
- FridayJun 5Drizzle66%—85°69°+4°
- SaturdayJun 6Light Showers79%—82°73°-3°
- SundayJun 7Drizzle68%—91°73°+9°
- MondayJun 8Overcast39%—91°73°0°
- TuesdayJun 9Overcast44%—91°73°0°
PM scrubbed by 2 hours of recent rain — PM2.5 down to 9.9 µg/m³, PM10 to 10.3 µg/m³. 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 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 38
- UV peak
- 0.9 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 38
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 9.9 µg/m³, PM10 to 10.3 µg/m³.
- PM2.5/PM10
- 0.96
- Wind
- light
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 3:25 AM
- Moonset
- 1:34 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Port Allen at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: February 18 (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.
SPC Convective Outlook
Storm Prediction Center — Port Allen
SPC has placed Port Allen 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
Port Allen's warmest month is July (~82°F mean) and its coldest is January (~50°F). Rainfall peaks in June (6.5 inches) and bottoms out in November (4.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 50° | 5.8″ | 7 |
| February | 54° | 4.7″ | 6 |
| March | 61° | 4.4″ | 6 |
| April | 67° | 4.9″ | 5 |
| May | 75° | 5.6″ | 6 |
| June | 80° | 6.5″ | 9 |
| July | 82° | 4.7″ | 9 |
| August | 82° | 6.1″ | 8 |
| September | 78° | 4.5″ | 6 |
| October | 69° | 4.2″ | 4 |
| November | 59° | 4.0″ | 5 |
| December | 53° | 5.2″ | 7 |
Regional context
Port Allen sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: New Orleans, LA, Baton Rouge, LA, Shreveport, LA, Lafayette, LA, Lake Charles, LA.
Frequently asked
- When does it freeze in Port Allen?
- Port Allen's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Port Allen?
- June is the wettest month with about 6.5 inches of rain on average; the city receives roughly 61 inches annually.
- What is the warmest month in Port Allen?
- July is typically warmest, averaging about 82°F.
- What is the coldest month in Port Allen?
- January is typically coldest, averaging about 50°F.
- When can I start a vegetable garden in Port Allen?
- 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 Port Allen get?
- Port Allen averages about 78 rainy days per year.
- What hardiness zone is Port Allen?
- Port Allen'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
Port Allen, Louisiana sits in a humid subtropical climate zone. January means hover near 50°F while July averages 82°F — a 31°F seasonal swing.
Across the year, Port Allen receives about 61 inches of precipitation spread over roughly 78 rainy days.
The rhythm of the year is set by latitude (30.4°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.