Decatur weather in December
In December, Decatur sees average daytime highs of 53°F and overnight lows near 37°F, with 5.2 in of precipitation across 10.7 wet days and about 9.7 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.
Highs ease over the month, from about 56°F in the first days to 51°F by the end. The sky is clear or mostly clear about 33% of the time in December, and the air most often feels dry.
Daylight stretches from about 9 h 54 min at the start of December to 9 h 42 min by month's end. Set against the rest of the year, December is Decatur's 11th-clearest and 5th-windiest month. For the whole year in context, see Decatur's year-round climate.
- Daytime high
- 53°
- 11th warmest
- Overnight low
- 37°
- 2nd coldest
- Precipitation
- 5.2 in
- 10.7 wet days
- Daylight
- 9 h 42 min
- 6:53 AM – 4:35 PM
- Cloud cover
- 61%
- 11th clearest
- Wind
- 7 mph
- 5th windiest
- Solar energy
- 2.2 kWh/m²
- Travel score
- 3.0
- out of 10
Decatur is city in Morgan and Limestone counties, Alabama, United States.
- Density
- 354/km²
- people per km²
- Founded
- 1821
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 56°F in the first days to 51°F by the end.
A typical December day in Decatur reaches about 53°F in the afternoon and slips back to 37°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 40°F and 65°F. Set against its neighbours, December runs about 8°F cooler than November and about 3°F warmer than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 56 | 56 | 56 | 55 | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 51 |
| Avg low (°F) | 39 | 39 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 56 | 39 |
| 2 | 56 | 39 |
| 3 | 56 | 39 |
| 4 | 55 | 39 |
| 5 | 55 | 39 |
| 6 | 55 | 39 |
| 7 | 55 | 38 |
| 8 | 54 | 38 |
| 9 | 54 | 38 |
| 10 | 54 | 38 |
| 11 | 54 | 38 |
| 12 | 53 | 38 |
| 13 | 53 | 38 |
| 14 | 53 | 37 |
| 15 | 53 | 37 |
| 16 | 53 | 37 |
| 17 | 53 | 37 |
| 18 | 53 | 37 |
| 19 | 52 | 37 |
| 20 | 52 | 37 |
| 21 | 52 | 37 |
| 22 | 52 | 37 |
| 23 | 52 | 37 |
| 24 | 52 | 37 |
| 25 | 52 | 37 |
| 26 | 51 | 36 |
| 27 | 51 | 36 |
| 28 | 51 | 36 |
| 29 | 51 | 36 |
| 30 | 51 | 36 |
| 31 | 51 | 36 |
How December really feels in Decatur
Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 18 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in December is cold — wind chill drags the overnight "feels like" below the raw low.
Decatur weather by month
How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 51° / 35° | 4.9 | 9.9 | 0.6 | 9.9 | 2.4 |
| Feb | 55° / 38° | 4.7 | 10.4 | 0.6 | 10.7 | 3.4 |
| Mar | 63° / 45° | 5.5 | 11.4 | 0.2 | 11.7 | 5.4 |
| Apr | 71° / 53° | 5.0 | 10.1 | 0 | 12.8 | 6.6 |
| May | 79° / 62° | 4.2 | 10.9 | 0 | 13.8 | 6.5 |
| Jun | 86° / 69° | 4.3 | 12.6 | 0 | 14.3 | 4.8 |
| Jul | 88° / 72° | 4.2 | 13.1 | 0 | 14.1 | 4.2 |
| Aug | 88° / 71° | 3.1 | 11.5 | 0 | 13.3 | 4.4 |
| Sep | 83° / 65° | 3.5 | 7.7 | 0 | 12.2 | 6.3 |
| Oct | 73° / 53° | 3.4 | 7.4 | 0 | 11.1 | 7.3 |
| Nov | 61° / 43° | 4.0 | 8.5 | 0.1 | 10.2 | 5.4 |
| Dec | 53° / 37° | 5.2 | 10.7 | 0.3 | 9.7 | 3.0 |
Cloud cover in December
The sky is clear or mostly clear about 33% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 58%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 47 | 46 | 45 | 44 | 44 | 43 | 42 | 42 | 42 | 42 | 41 | 42 | 42 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 40 | 40 | 40 | 40 | 39 | 39 |
| Cloudier (%) | 53 | 54 | 55 | 56 | 56 | 57 | 58 | 58 | 58 | 58 | 59 | 58 | 58 | 59 | 59 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 60 | 60 | 60 | 60 | 61 | 61 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 47 | 53 |
| 2 | 46 | 54 |
| 3 | 45 | 55 |
| 4 | 44 | 56 |
| 5 | 44 | 56 |
| 6 | 43 | 57 |
| 7 | 42 | 58 |
| 8 | 42 | 58 |
| 9 | 42 | 58 |
| 10 | 42 | 58 |
| 11 | 41 | 59 |
| 12 | 42 | 58 |
| 13 | 42 | 58 |
| 14 | 41 | 59 |
| 15 | 41 | 59 |
| 16 | 41 | 59 |
| 17 | 42 | 58 |
| 18 | 42 | 58 |
| 19 | 42 | 58 |
| 20 | 42 | 58 |
| 21 | 42 | 58 |
| 22 | 42 | 58 |
| 23 | 42 | 58 |
| 24 | 42 | 58 |
| 25 | 41 | 59 |
| 26 | 40 | 60 |
| 27 | 40 | 60 |
| 28 | 40 | 60 |
| 29 | 40 | 60 |
| 30 | 39 | 61 |
| 31 | 39 | 61 |
Chance of precipitation in December
Decatur gets around 5.2 in of rain and snow over 10.7 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 35% and peaks near 36% on the wettest days, and about 0 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 33 |
| Rain chance (%) | |
|---|---|
| 1 | 33 |
| 2 | 33 |
| 3 | 33 |
| 4 | 34 |
| 5 | 34 |
| 6 | 34 |
| 7 | 34 |
| 8 | 34 |
| 9 | 35 |
| 10 | 35 |
| 11 | 35 |
| 12 | 35 |
| 13 | 35 |
| 14 | 35 |
| 15 | 36 |
| 16 | 36 |
| 17 | 36 |
| 18 | 36 |
| 19 | 36 |
| 20 | 36 |
| 21 | 36 |
| 22 | 36 |
| 23 | 36 |
| 24 | 35 |
| 25 | 35 |
| 26 | 35 |
| 27 | 35 |
| 28 | 34 |
| 29 | 34 |
| 30 | 34 |
| 31 | 33 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 92% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 91 | 91 | 90 | 90 | 90 | 90 | 91 | 91 | 91 | 91 | 91 | 93 | 93 | 93 | 94 | 94 | 94 | 94 | 94 | 94 | 95 | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 93 | 93 | 93 |
| Comfortable (%) | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
| Humid (%) | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 91 | 6 | 3 |
| 2 | 91 | 6 | 3 |
| 3 | 90 | 7 | 3 |
| 4 | 90 | 7 | 3 |
| 5 | 90 | 7 | 3 |
| 6 | 90 | 7 | 3 |
| 7 | 91 | 7 | 2 |
| 8 | 91 | 7 | 2 |
| 9 | 91 | 7 | 2 |
| 10 | 91 | 7 | 2 |
| 11 | 91 | 7 | 2 |
| 12 | 93 | 6 | 1 |
| 13 | 93 | 6 | 1 |
| 14 | 93 | 6 | 1 |
| 15 | 94 | 5 | 1 |
| 16 | 94 | 5 | 1 |
| 17 | 94 | 5 | 1 |
| 18 | 94 | 4 | 2 |
| 19 | 94 | 4 | 2 |
| 20 | 94 | 4 | 2 |
| 21 | 95 | 3 | 2 |
| 22 | 94 | 3 | 3 |
| 23 | 94 | 3 | 3 |
| 24 | 94 | 3 | 3 |
| 25 | 94 | 3 | 3 |
| 26 | 94 | 3 | 3 |
| 27 | 94 | 3 | 3 |
| 28 | 94 | 3 | 3 |
| 29 | 93 | 4 | 3 |
| 30 | 93 | 4 | 3 |
| 31 | 93 | 4 | 3 |
Wind in December
Winds average 7 mph in December.
Across December, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in December
Daylight runs from about 9 h 54 min at the start of December to 9 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over December. Sunrise moves from 6:42 AM to 7:00 AM, and sunset from 4:33 PM to 4:42 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.9 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 |
| Sunrise (AM) | 6:42 | 6:43 | 6:44 | 6:45 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:49 | 6:50 | 6:51 | 6:51 | 6:52 | 6:53 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:56 | 6:57 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 6:59 | 6:59 | 7:00 | 7:00 |
| Sunset (PM) | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:33 | 4:34 | 4:34 | 4:34 | 4:34 | 4:35 | 4:35 | 4:35 | 4:36 | 4:36 | 4:36 | 4:37 | 4:37 | 4:38 | 4:38 | 4:39 | 4:39 | 4:40 | 4:41 | 4:41 | 4:42 | 4:42 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.9 | 6:42 | 4:33 |
| 2 | 9.8 | 6:43 | 4:33 |
| 3 | 9.8 | 6:44 | 4:33 |
| 4 | 9.8 | 6:45 | 4:33 |
| 5 | 9.8 | 6:45 | 4:33 |
| 6 | 9.8 | 6:46 | 4:33 |
| 7 | 9.8 | 6:47 | 4:33 |
| 8 | 9.8 | 6:48 | 4:33 |
| 9 | 9.7 | 6:49 | 4:33 |
| 10 | 9.7 | 6:49 | 4:33 |
| 11 | 9.7 | 6:50 | 4:34 |
| 12 | 9.7 | 6:51 | 4:34 |
| 13 | 9.7 | 6:51 | 4:34 |
| 14 | 9.7 | 6:52 | 4:34 |
| 15 | 9.7 | 6:53 | 4:35 |
| 16 | 9.7 | 6:53 | 4:35 |
| 17 | 9.7 | 6:54 | 4:35 |
| 18 | 9.7 | 6:54 | 4:36 |
| 19 | 9.7 | 6:55 | 4:36 |
| 20 | 9.7 | 6:56 | 4:36 |
| 21 | 9.7 | 6:56 | 4:37 |
| 22 | 9.7 | 6:57 | 4:37 |
| 23 | 9.7 | 6:57 | 4:38 |
| 24 | 9.7 | 6:57 | 4:38 |
| 25 | 9.7 | 6:58 | 4:39 |
| 26 | 9.7 | 6:58 | 4:39 |
| 27 | 9.7 | 6:59 | 4:40 |
| 28 | 9.7 | 6:59 | 4:41 |
| 29 | 9.7 | 6:59 | 4:41 |
| 30 | 9.7 | 7:00 | 4:42 |
| 31 | 9.7 | 7:00 | 4:42 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.2 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 6.2 kWh/m² in June across the year — December's 2.2 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.4 | 2.4 | 2.4 | 2.3 | 2.3 | 2.3 | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.4 | Moderate |
| 2 | 2.4 | Moderate |
| 3 | 2.4 | Moderate |
| 4 | 2.3 | Moderate |
| 5 | 2.3 | Moderate |
| 6 | 2.3 | Moderate |
| 7 | 2.3 | Moderate |
| 8 | 2.2 | Moderate |
| 9 | 2.2 | Moderate |
| 10 | 2.2 | Moderate |
| 11 | 2.2 | Moderate |
| 12 | 2.2 | Moderate |
| 13 | 2.2 | Moderate |
| 14 | 2.2 | Moderate |
| 15 | 2.2 | Moderate |
| 16 | 2.2 | Moderate |
| 17 | 2.2 | Moderate |
| 18 | 2.2 | Moderate |
| 19 | 2.2 | Moderate |
| 20 | 2.2 | Moderate |
| 21 | 2.2 | Moderate |
| 22 | 2.2 | Moderate |
| 23 | 2.2 | Moderate |
| 24 | 2.2 | Moderate |
| 25 | 2.2 | Moderate |
| 26 | 2.2 | Moderate |
| 27 | 2.2 | Moderate |
| 28 | 2.2 | Moderate |
| 29 | 2.2 | Moderate |
| 30 | 2.2 | Moderate |
| 31 | 2.2 | Moderate |
Hazard calendar for Decatur
None of Decatur's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Decatur sits in the Atlantic hurricane belt; the season peaks August–October.
Is December a good time to visit Decatur?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Decatur.
What to pack for Decatur in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Decatur sees daytime highs around 53°F and nights near 37°F. Pack a warm layer. Worth having: rain gear. About 11 days see rain.
UV index in Decatur in December
Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Decatur peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 5 | 6 | 7 | 8 | 10 | 10 | 9 | 7 | 5 | 4 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | Moderate |
| Mar | 6 | High |
| Apr | 7 | Very high |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Decatur in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Decatur is worst in July — around 19 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (January, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 6 | 8 | 10 | 10 | 13 | 16 | 19 | 16 | 11 | 8 | 7 | 6 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 6 | Good |
| Feb | 8 | Good |
| Mar | 10 | Good |
| Apr | 10 | Good |
| May | 13 | Moderate |
| Jun | 16 | Moderate |
| Jul | 19 | Moderate |
| Aug | 16 | Moderate |
| Sep | 11 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Decatur?
Decatur sits at 34.6°N, 87.0°W, 561 ft above sea level, in United States. The nearest listed city is Athens, 14 mi away.
Topography around Decatur
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Decatur.
Within 2 miles, the terrain around Decatur has only modest variations in elevation — a maximum elevation change of 138 ft around an average of 571 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 505 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,621 ft.
The land around Decatur is covered by trees (31%), water (30%) and artificial surfaces (22%) within 2 miles, trees (43%) and cropland (23%) within 10 miles, and trees (62%) and grassland (23%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Decatur (34.6059°, -86.9833°, elevation 561 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).