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Climate in Huntsville, Alabama: Monthly Weather Averages

By the AverageClimate Editorial Team · Last updated: October 2026

Huntsville sits at 624 feet above sea level, and its climate, as recorded at the Huntsville International Airport, AL station, runs to a yearly mean of 62.9°F. The warmest month is July, averaging 81.3°F with typical highs of 91.5°F; the coldest is January, averaging 42.7°F with lows around 33.1°F. Across a normal year the city receives 54.3 in of precipitation and 2.4 in of snow. The full month-by-month picture below comes from the official 1991–2020 U.S. Climate Normals — the 30-year averages the National Weather Service itself uses — so it describes the Huntsville climate you should actually plan around, whether you are timing a visit, weighing a move, or just settling an argument about which month is best.

Huntsville climate month by month

The table below is the complete 1991–2020 normals profile for Huntsville: average high, average low and mean temperature, rainfall, and snowfall for every month. Read down the Mean column to feel the year's rhythm — Huntsville's temperature range runs from 42.7°F in January to 81.3°F in July.

How to read the colors:below freezingcoldcoolmildwarmhot. Bands are colored by each cell's own temperature, so a whole year reads at a glance.

Huntsville through the seasons

Winter in Huntsville averages highs of 52.3–57.1°F and lows of 33.1–36.4°F, a seasonal mean of 45.0°F. The three months together bring 16.0 in of precipitation — about 29% of the city's yearly total — with December the wettest of the three at 5.87 in. Snowfall averages 1.9 in over the season, most of it in February (1.0 in). It is a genuinely cold season — heavy coats, freezing nights, and the year's most changeable weather — without being locked below freezing around the clock.

Spring in Huntsville averages highs of 65.5–82.5°F and lows of 43.0–60.2°F, a seasonal mean of 62.8°F. The three months together bring 14.9 in of precipitation — about 27% of the city's yearly total — with March the wettest of the three at 5.39 in. Snowfall averages 0.5 in over the season, most of it in March (0.5 in). The season is a transition: the average temperature climbs 17.1°F from March to May, and by late spring Huntsville is firmly into warm territory, with May rainfall of 4.67 in to plan around.

Summer in Huntsville averages highs of 89.1–91.5°F and lows of 68.0–71.1°F, a seasonal mean of 80.1°F. The three months together bring 12.1 in of precipitation — about 22% of the city's yearly total — with July the wettest of the three at 4.49 in. Summers are hot in the classic sense — most afternoons reach the 90s, and shade, water, and air conditioning shape the daily routine.

Fall in Huntsville averages highs of 63.9–86.5°F and lows of 41.2–63.4°F, a seasonal mean of 63.8°F. The three months together bring 11.3 in of precipitation — about 21% of the city's yearly total — with November the wettest of the three at 4.25 in. Temperatures ease off through the season — the monthly mean drops 22.4°F from September to November — and fall is when Huntsville's weather turns crisp and dry, while nights stay mostly frost-free into December.

Best and worst months to visit Huntsville

Ranking every month by its normals — mild mean temperatures score best, heavy rain and snow count against — the most comfortable months to visit Huntsville are:

MaySeptemberOctober

May leads the list: average highs of 82.5°F, lows of 60.2°F, and 4.67 in of rain, with snow a non-factor at 0.0 in. The other picks, September and October, offer the same balance in Huntsville's shoulder seasons. At the other end, January is usually the month to avoid — the least comfortable mix of temperature and rainfall, with a mean temperature of 42.7°F and 4.99 in of precipitation.

How Huntsville compares

Across the 124 cities in our dataset, the typical city averages 57.9°F for the year and 36.3 in of precipitation. Huntsville runs 5.0°F warmer than that typical city and wetter by 18.0 in a year, ranking #39 of 124 for annual warmth and #14 of 124 for precipitation (wettest first). Its year-round temperature swing — warmest month minus coldest — is 38.6°F, which puts it in the moderate, clearly seasonal camp.

Planning notes for Huntsville

For anyone relocating: average lows never drop below freezing in any month, so hard freezes are events, not seasons; 2 months average highs of 90°F or more, making air conditioning a core cost of summer life; days and nights differ by 21.7°F on average — a big desert-style swing that rewards dressing in layers year-round; 5 months of the year average between 55°F and 80°F, the band most people find comfortable without heating or cooling. Those four facts, all straight from the normals table above, shape everything from a Huntsville wardrobe to its utility bills.

Huntsville climate FAQ

Source: 1991–2020 U.S. Climate Normals, NOAA National Centers for Environmental Information (NCEI) — ncei.noaa.gov. Station: Huntsville International Airport, AL (USW00003856), elevation 624 ft. Figures checked October 2026.