Huntsville, Alabama climate: Normal weather by month, frost dates and records

What is the weather like in Huntsville each month?

July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 33°F. The most precipitation falls in December (5.87 in), the least in September (3.49 in).

Each month has its own page with the day-by-day normals, the month's records and its recent years:

• Jan
• Feb
• Mar
• Apr
• May
• Jun
• Jul
• Aug
• Sep
• Oct
• Nov
• Dec

When is the best weather to visit Huntsville?

Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, October has the fewest days with rain (8).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost in Huntsville?

In Huntsville, the last spring frost (32°F) comes after March 24 in half of years and after April 8 in one year in ten; the first autumn frost comes before November 8 in half of years and before October 27 in one year in ten.

Last spring frost, half of years after

March 241 year in 10 after April 8; 9 in 10 after March 4

First autumn frost, half of years before

November 81 year in 10 before October 27; 9 in 10 before November 25

NOAA puts the median frost-free season at 229 days, and the season without a hard freeze (28°F) at 256 days.

A hard freeze (28°F) comes after March 10 in half of springs and before November 20 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Huntsville in zone 8a across its 15 ZIP code areas (8a in 35756, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Huntsville's NOAA station is in zone 8a: the coldest night of a typical year reaches 12°F (30 complete years).

Frost dates for every NOAA station in Alabama · Frost dates by ZIP code

What hardiness zone is each Huntsville ZIP code in?

The USDA's 2023 map gives each ZIP code area one zone. Huntsville's 15 ZIP code areas are all in zone 8a. Each ZIP's frost dates are in the frost tool.

How hot and how cold does it get in Huntsville?

In a normal year in Huntsville, 62 days a year reach 90°F (2 of them 100°F or more), 56 nights fall to 32°F or colder and 118 days bring measurable precipitation.

Days at 90°F or more

62a normal year

Days at 100°F or more

2a normal year

Nights at 32°F or colder

56a normal year

Days that stay below freezing

3high of 32°F or less

Days with 0.01 inch of precipitation

118a normal year

Days with 1 inch of snow or more

1a normal year

The highest temperature in Huntsville's official record (kept by the National Weather Service since 1907) is 111°F, on July 29, 1930; the lowest is −11°F, on January 30, 1966.

The wettest calendar year on that record is 1989, with 73.58 in; the snowiest season is 1963–64, with 24.1 inches.

How humid and windy is Huntsville, and how clear are its skies?

The summer (June-August) dew point averages 68°F. The muggiest month is July, with an average dew point of 70°F, above the 65°F at which most people call the air sticky; the driest air comes in January (32°F). February is the windiest month (8.7 mph on average), and September has the most clear or nearly clear hours (64%).

How sunny is Huntsville?

Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Huntsville, 4.4 kWh per square metre a day. August is the sunniest month (81%) and February the cloudiest (64%). Among the 459 U.S. places of 50,000 or more, that ranks tied 276th (with 27 others) in sunshine.

How much heating and cooling does Huntsville need?

A normal year in Huntsville brings 2,831 heating degree days, 47% fewer than the median U.S. place (5,373), and 2,107 cooling degree days, 2.3 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,547 growing degree days a year above 50°F.

Has Huntsville been warmer than normal lately?

2024 averaged 64.8°F, 1.9°F above the 1991-2020 normal of 62.9°F. 2 of the 4 complete years since 2021 ran warmer than the normal.

Over 67 complete years from 1959 to 2025, the station's annual mean temperature rose at a fitted 3.9°F per century (+0.22°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Huntsville share this climate record?

4 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Madison, ALalso near: Belle Mina (2 mi N) (7 mi, 59.7°F a year); Decatur (11 mi, 61.4°F a year)64,029 people · 5 mi N
• Triana, AL4,936 people · 4 mi SE
• Redstone Arsenal, AL971 people · 8 mi NE
• Somerville, AL821 people · 12 mi S

Nearby and next

• Huntsville in OctoberThis month day by day, its records and recent years
• Alabama climateThe statewide normals and every place in the state
• Belle Mina (2 mi N), AL6 miles from this station, 59.7°F a year
• Decatur, AL9 miles from this station, 61.4°F a year
• Athens, AL13 miles from this station, 62.6°F a year
• Owens Cross Roads, AL21 miles from this station, 59.5°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made