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Mountain Brook, Alabama Weather

Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →

Mountain Brook weather forecast — hour by hour, 7-day outlook, NOAA radar

Mountain Brook, AL
Saturday, July 4 at 10:47 PM
79
°
Clear
Feels like
83°
Humidity
67%
Wind
4 mph
Sunrise
12:42 AM
Sunset
3:00 PM
Mountain Brook, AL
Hour by hour · 24h
24-Hour ForecastMountain Brook, AL: 24-hour forecast. Temperatures range from 73 to 91 degrees Fahrenheit with a 31% chance of precipitation at 7 PM.
L 73°H 91°
Mountain Brook, AL
7-day forecast
  1. Today
    Jul 4
    Partly Cloudy
    20%
    —
    93°71°—
  2. Sunday
    Jul 5
    Rain
    31%
    0.16″
    91°73°-2°
  3. Monday
    Jul 6
    Light Showers
    66%
    —
    81°72°-10°
  4. Tuesday
    Jul 7
    Heavy Drizzle
    38%
    —
    90°70°+9°
  5. Wednesday
    Jul 8
    Overcast
    13%
    —
    92°71°+2°
  6. Thursday
    Jul 9
    T-storm w/ Hail
    13%
    —
    86°71°-6°
  7. Friday
    Jul 10
    Thunderstorm
    45%
    —
    89°71°+3°
Mountain Brook, AL
Next 24 hours · Mild now
HOT 90°70°82°94°6p12a6a12pnow 79°high 91°low 73°PRECIP %
Mountain Brook, AL
Anemometer · 24h winds · from true
NESW
From · True
NNW
327° · backing 141°
Direction
NNW
327°
Sustained
4
mph
Gust
5
mph
Peak 24h
15
avg 3
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 3 · pk 15 @ 12:00a
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 273SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Mountain Brook, AL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
982.5
-0.3 mb in 3h · steady · 29.01 inHg
Now
982.5
mb
3h
-0.3
mb
12h
-4.2
mb
24h
-3.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 982–986
9759809859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW986.2981.7981.8
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Mountain Brook, AL
Air quality
59
AQI
Moderate
↓-25 in 6h

AQI 59 (Moderate), driven by PM2.5. AQI down 25 over the last 6 hours — air quality is improving sharply. PM2.5 at 26.4 µg/m³ (AQI 83) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERModerate
26.4μg/m³
PM 10Good
29μg/m³
NO₂Moderate
26μg/m³
OzoneModerate
65μg/m³
UV IndexLow
0.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~89%) — afternoon ozone should stay flat.

Present
AQI 31
UV peak
0.0 at 1 PM
Sky at peak
overcast
Projected peak
AQI 4

PM × Wind × Precip

PM2.5 at 26.4 µg/m³ (AQI 83) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.92
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).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³390
Mountain Brook, AL
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
50.6mi
UNLIMITED
83 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
03:47 UTC · Mountain Brook, AL · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
03:47 UTC · Mountain Brook, AL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Mountain Brook, AL
Satellite · infrared · animated
Mountain Brook, AL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Mountain Brook, AL
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:14 AM
Sunrise
12:42 AM
Daylight
14h 18m
Sunset
3:00 PM
Civil dusk
8:30 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Mountain Brook, AL
The moon
Waning Gibbous
76% illuminated
Moonrise
11:00 PM
Moonset
11:01 AM
In sign
♓︎ Pisces
Mountain Brook, AL
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Mountain Brook at a glance

  • Today vs. normal: 79°F — typical for the season
  • Last frost: March 8 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Mountain Brook

  1. Sat93°71°20%
  2. Sun91°73°31%
  3. Mon81°72°66%
  4. Tue90°70°38%
  5. Wed92°71°13%
  6. Thu86°71°13%
  7. Fri89°71°45%
  8. Sat89°69°53%
  9. Sun85°67°46%
  10. Mon78°67°25%
  11. Tue89°66°14%
  12. Wed92°70°23%
  13. Thu90°73°26%
  14. Fri92°71°42%
  15. Sat93°73°41%
  16. Sun95°72°39%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 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.

SPC Convective Outlook

Storm Prediction Center — Mountain Brook

SPC has placed Mountain Brook in the Marginal Risk category for severe thunderstorms tomorrow.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWMRGLMarginal Risk
  • DAY 3TSTMGeneral Thunderstorms

Isolated severe storms possible. Limited threat for hail or damaging wind.

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.

January 1–5: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its Return.December 26–31: The Year Turns in Silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the scorching afternoon

Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.

Day 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
Marchlettuce, peas, spinach, radishes—
Aprillettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

Mountain Brook peaks at about 80°F in July and bottoms near 42°F in January; March brings the heaviest rain (5.7 inches) and October the least (2.4 inches).

MonthMean tempPrecipRainy days
January42°5.2″15
February46°4.7″14
March53°5.7″17
April61°4.8″15
May69°3.2″15
June77°3.6″16
July80°4.2″23
August79°4.6″22
September74°2.8″13
October65°2.4″9
November52°4.3″12
December45°5.5″15

Regional context

In Mountain Brook, NOAA NCEI 1991-2020 normals put January near 42°F and July near 80°F — a 38°F seasonal arc — with about 51.1 inches of precipitation over 185 rainy or snowy days.

No season owns Mountain Brook's rain: March reaches 5.7 inches across 16.7 days and October keeps 2.4 inches on 9.1, an even spread through Mountain Brook's year. That even rhythm groups Mountain Brook with places like Vestavia Hills, AL, Birmingham, AL and Homewood, AL.

Around mid-March, Mountain Brook sheds its freezing nights — peas, lettuce, spinach, and radishes go into Mountain Brook's beds. Mountain Brook's heat-lovers — tomatoes, peppers, squash — hold off until Mountain Brook's frost risk clears, 10-14 days on. Frost returns to Mountain Brook near mid-December, ending the tender-crop season. Mountain Brook's low ground holds frost later into spring than Mountain Brook's benches, which run 3-5 days ahead.

Similar climates: Vestavia Hills, AL, Birmingham, AL, Homewood, AL, Brook Highland, AL, Irondale, AL.

Frequently asked

When does it freeze in Mountain Brook?
Frost typically leaves Mountain Brook by mid-March and returns to Mountain Brook near mid-December.
What is the rainy season in Mountain Brook?
Mountain Brook sees its heaviest rain in March (around 5.7 inches), part of roughly 51 inches a year.
What is the warmest month in Mountain Brook?
Mountain Brook peaks in July, when the mean runs near 80°F.
What is the coldest month in Mountain Brook?
January is Mountain Brook's coldest month, averaging about 42°F.
When can I start a vegetable garden in Mountain Brook?
In Mountain Brook, sow peas and hardy greens around mid-March; Mountain Brook's tomatoes and peppers wait two weeks more.
How many rainy days does Mountain Brook get?
Mountain Brook averages about 185 days with measurable rain or snow each year.
What hardiness zone is Mountain Brook?
Since January in Mountain Brook averages 42°F, Mountain Brook's USDA zone follows that floor — confirm it by ZIP.
What is the 10-day forecast for Mountain Brook?
Mountain Brook's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Mountain Brook?
See this week's day-by-day rain chances for Mountain Brook in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Mountain Brook?
Current conditions for Mountain Brook and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Mountain Brook forecast updated?
The Mountain Brook forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Mountain Brook?
Today's sunrise and sunset times for Mountain Brook are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Mountain Brook?
The next few days in Mountain Brook's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Mountain Brook, Alabama, the humid subtropical climate runs from about 42°F in January to 80°F in July, a 38°F seasonal range.

In a typical year Mountain Brook records about 51 inches of precipitation on around 185 days.

From 33.5°N, Mountain Brook sees a 38°F seasonal swing that governs Mountain Brook's planting and frost windows.

All cities in Alabama →

Birmingham, AL weather →

ZIP codes in Mountain Brook

  • 35213
  • 35223
  • 35243
  • 35253
  • 35297

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.