Irondale, Alabama Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Irondale weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——81°58°—
- FridayJun 5Overcast——84°60°+3°
- SaturdayJun 6Overcast——87°64°+3°
- SundayJun 7Light Rain46%0.10″74°66°-13°
- MondayJun 8Light Drizzle54%—84°66°+10°
- TuesdayJun 9Light Drizzle51%0.01″75°68°-9°
- WednesdayJun 10Light Drizzle27%0.01″71°67°-4°
PM2.5 at 6.3 µg/m³ (AQI 35) 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 during the projected peak around 7 AM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 6.3 µg/m³ (AQI 35) 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
- 3:56 AM
- Moonset
- 2:06 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Irondale at a glance
- Today vs. normal: 18°F below the seasonal normal for this latitude
- Last frost: March 8 (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.
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
Irondale's warmest month is July (~82°F mean) and its coldest is January (~45°F). Rainfall peaks in March (5.7 inches) and bottoms out in October (3.3 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 45° | 5.0″ | 7 |
| February | 49° | 5.0″ | 8 |
| March | 56° | 5.7″ | 8 |
| April | 64° | 5.1″ | 6 |
| May | 72° | 4.9″ | 7 |
| June | 78° | 4.8″ | 8 |
| July | 82° | 5.4″ | 8 |
| August | 81° | 4.3″ | 7 |
| September | 76° | 4.0″ | 4 |
| October | 65° | 3.3″ | 5 |
| November | 54° | 4.2″ | 6 |
| December | 47° | 4.9″ | 8 |
Regional context
Irondale sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Birmingham, AL, Huntsville, AL, Mobile, AL, Montgomery, AL, Tuscaloosa, AL.
Frequently asked
- When does it freeze in Irondale?
- Irondale's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Irondale?
- March is the wettest month with about 5.7 inches of rain on average; the city receives roughly 57 inches annually.
- What is the warmest month in Irondale?
- July is typically warmest, averaging about 82°F.
- What is the coldest month in Irondale?
- January is typically coldest, averaging about 45°F.
- When can I start a vegetable garden in Irondale?
- 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 Irondale get?
- Irondale averages about 81 rainy days per year.
- What hardiness zone is Irondale?
- Irondale'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
Irondale, Alabama sits in a humid subtropical climate zone. January means hover near 45°F while July averages 82°F — a 37°F seasonal swing.
Across the year, Irondale receives about 57 inches of precipitation spread over roughly 81 rainy days.
The rhythm of the year is set by latitude (33.5°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.