Weather in Huntsville in December
United States · 20-year averages, December
A hard month. December asks something of you. Go in knowing what. Highs sit at 11.8 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.
December ranks 8 of 12 in Huntsville: past the worst of the year but short of October, which is the month to book if the dates are open.
The rain arrives in bursts — 5 of the 11 wet days are heavy ones. Mornings tend to hold; build the outdoor half of each day before lunch and keep the afternoon flexible. Layers, and a genuinely waterproof outer — at 11.8 °C the difference between a good day and a miserable one is entirely down to what you are wearing.
What the averages hide
Averages flatten a month, and this one hides a few things: 15 nights fall below freezing. Across the twenty years measured, the hottest December day reached 24 °C and the coldest night fell to -11.9 °C, and the wettest single day dropped 69 mm — roughly 46% of the month's rain in one day.
December is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest December on record still delivered 288 mm against 59 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 151 mm average is a reasonable planning figure, not a promise.
Wind is light at 4.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 84%, which at 11.8 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.
How December sits in the year
The month is on the way down: 5.1 °C cooler than November, with January dropping another 2.2 °C. The first week and the last are not the same trip.
Daylight in December
December sits at the dark end of Huntsville's year — 9.8 hours of daylight against 14.5 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.
An inland climate
With no coast nearby, the year swings a fair way — 33.3 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.
How busy it gets
Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
December in Huntsville versus nearby
If Huntsville is one option among several, the nearby comparison is worth making. Nashville is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Atlanta is close enough to be a coin toss — within a degree on temperature, the same number of rain days.
So: December is a compromise. October is 32 points better and is what Huntsville is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.
Every month in Huntsville
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 9.6 | -0.5 | 9 | 119 | 84 | 10.1 | 46 |
| February | 11.9 | 1.3 | 12 | 135 | 84 | 10.9 | 48 |
| March | 16.9 | 5.4 | 11 | 125 | 82 | 11.9 | 65 |
| April | 21.8 | 10.1 | 11 | 125 | 79 | 13 | 77 |
| May | 26 | 15.2 | 12 | 118 | 78 | 14 | 75 |
| June | 30.3 | 19.7 | 14 | 103 | 75 | 14.5 | 59 |
| July | 32.3 | 21.6 | 18 | 121 | 73 | 14.3 | 43 |
| August | 32.8 | 21.3 | 14 | 104 | 70 | 13.5 | 47 |
| September | 29.9 | 17.6 | 9 | 99 | 70 | 12.4 | 68 |
| October | 23.9 | 11.1 | 9 | 93 | 71 | 11.4 | 81 |
| November | 16.9 | 4.7 | 9 | 105 | 76 | 10.4 | 70 |
| December | 11.8 | 1.4 | 11 | 151 | 84 | 9.8 | 49 |
See all twelve months in Huntsville, or where else to go in December.
Planning the rest of the trip
- Flight time to Huntsville how long you are actually in the air
- Huntsville time zone and the difference from home
- Days until your trip count down to the departure date
- Gyms & clubs in Huntsville keep training while you are there