Demopolis, Alabama climate: Normal weather by month, frost dates and records
Demopolis's normal year runs from 34°F January nights to 92°F July afternoons, with 56.2 inches of precipitation and less than an inch of snow (0.2 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.9°C, January lows of 1°C, July highs of 33°C, 1,428 mm of precipitation a year.
- NOAA stationDemopolis Lock and Dam
- Station IDUSC00012245
- Location32.52°N 87.88°W
- Elevation100 ft (31 m)
- Population6,724
On October 14, the normal high in Demopolis is 78°F and the normal low 54°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Demopolis.
- Jan 57° 34°
- Feb 61° 37°
- Mar 69° 44°
- Apr 77° 51°
- May 84° 60°
- Jun 90° 68°
- Jul 92° 71°
- Aug 91° 70°
- Sep 87° 65°
- Oct 78° 53°
- Nov 67° 42°
- Dec 59° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Demopolis each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 34°F. The most precipitation falls in March (5.75 in), the least in October (3.25 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 57°F | 34°F | 45.3°F | 5.66 | 9 | <1 | 16 | 10 h 10 min |
| February | 61°F | 37°F | 48.9°F | 5.45 | 9 | <1 | 11 | 11 h |
| March | 69°F | 44°F | 56.4°F | 5.75 | 9 | <1 | 5 | 12 h |
| April | 77°F | 51°F | 63.7°F | 4.85 | 8 | <1 | <1 | 13 h |
| May | 84°F | 60°F | 72.1°F | 3.65 | 8 | 5 | <1 | 13 h 50 min |
| June | 90°F | 68°F | 78.6°F | 4.65 | 9 | 16 | <1 | 14 h 20 min |
| July | 92°F | 71°F | 81.4°F | 5.03 | 10 | 22 | <1 | 14 h 10 min |
| August | 91°F | 70°F | 80.9°F | 4.85 | 8 | 20 | <1 | 13 h 20 min |
| September | 87°F | 65°F | 76.1°F | 3.38 | 6 | 10 | <1 | 12 h 20 min |
| October | 78°F | 53°F | 65.2°F | 3.25 | 5 | 1 | <1 | 11 h 30 min |
| November | 67°F | 42°F | 54.2°F | 4.30 | 7 | <1 | 6 | 10 h 30 min |
| December | 59°F | 36°F | 47.6°F | 5.39 | 9 | <1 | 15 | 10 h |
| Year (annual) | 76°F | 53°F | 64.2°F | 56.21 | 96 | 74 | 52 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | 1°C | 7.4°C | 144 mm |
| February | 16°C | 3°C | 9.4°C | 138 mm |
| March | 21°C | 7°C | 13.6°C | 146 mm |
| April | 25°C | 10°C | 17.6°C | 123 mm |
| May | 29°C | 16°C | 22.3°C | 93 mm |
| June | 32°C | 20°C | 25.9°C | 118 mm |
| July | 33°C | 22°C | 27.4°C | 128 mm |
| August | 33°C | 21°C | 27.2°C | 123 mm |
| September | 31°C | 18°C | 24.5°C | 86 mm |
| October | 25°C | 12°C | 18.4°C | 83 mm |
| November | 19°C | 5°C | 12.3°C | 109 mm |
| December | 15°C | 2°C | 8.7°C | 137 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00012245; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Demopolis?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, October has the fewest days with rain (5).
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.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00012245.
When is the last frost in Demopolis?
In Demopolis, the last spring frost (32°F) comes after March 16 in half of years and after April 3 in one year in ten; the first autumn frost comes before November 14 in half of years and before October 31 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 161 year in 10 after April 3; 9 in 10 after February 26
- First autumn frost, half of years before
- November 141 year in 10 before October 31; 9 in 10 before December 1
NOAA puts the median frost-free season at 241 days, and the season without a hard freeze (28°F) at 270 days.
A hard freeze (28°F) comes after March 2 in half of springs and before November 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Demopolis in zone 8b in ZIP code 36732. By the map's own method, the average of each year's coldest night over 1991-2020, Demopolis's NOAA station is in zone 8b: the coldest night of a typical year reaches 17°F (16 complete years).
Frost dates for every NOAA station in Alabama · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00012245; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Demopolis?
In a normal year in Demopolis, 74 days a year reach 90°F (1 of them 100°F or more), 52 nights fall to 32°F or colder and 96 days bring measurable precipitation.
- Days at 90°F or more
- 74a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 52a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 96a normal year
The highest temperature in this station's record (since 1951) is 105°F, on July 30, 1952; the lowest is −2°F, on January 22, 1985.
The wettest calendar year on that record is 2009, with 72.32 in; the snowiest season is 1976–77, with 2.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00012245; records: ACIS (NOAA Regional Climate Centers), station USC00012245. Records use complete months only; a month missing more than three days is left out.
How sunny is Demopolis?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Demopolis, 4.6 kWh per square metre a day. September is the sunniest month (82%) and February the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 2.8 |
| February | 69% | 3.3 |
| March | 73% | 4.5 |
| April | 78% | 5.6 |
| May | 81% | 6.2 |
| June | 81% | 6.4 |
| July | 81% | 6.1 |
| August | 81% | 5.6 |
| September | 82% | 5.0 |
| October | 80% | 4.1 |
| November | 78% | 3.2 |
| December | 69% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Demopolis need?
A normal year in Demopolis brings 2,467 heating degree days, 54% fewer than the median U.S. place (5,373), and 2,205 cooling degree days, 2.4 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,813 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 613 | 2 |
| February | 454 | 4 |
| March | 288 | 23 |
| April | 110 | 72 |
| May | 15 | 237 |
| June | 0 | 407 |
| July | 0 | 508 |
| August | 0 | 493 |
| September | 3 | 336 |
| October | 99 | 107 |
| November | 339 | 13 |
| December | 545 | 4 |
| Year (annual) | 2,467 | 2,205 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00012245. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Demopolis's climate compare?
Demopolis is warmer than 50 of the other 79 places with their own NOAA record in Alabama, and wetter than 24. Across the 7,247 U.S. stations with normals, its annual mean of 64.2°F is warmer than 86%.
In the Köppen classification computed from these normals, Demopolis is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Demopolis share this climate record?
8 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.
- Linden, AL1,815 people · 16 mi S
- Forkland, AL419 people · 9 mi N
- Pennington, AL326 people · 24 mi SW
- Thomaston, AL311 people · 23 mi SE
- Providence, AL162 people · 14 mi SE
- Faunsdale, AL82 people · 17 mi E
- Myrtlewood, AL68 people · 19 mi S
- Dayton, AL28 people · 18 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Demopolis's climate
What is the coldest month in Demopolis?
January, with a normal high of 57°F and a normal low of 34°F. The warmest is July (92°F by day, 71°F at night).
Does it snow in Demopolis?
Rarely: NOAA's normal is 0.2 inch a year.
What is the rainiest month in Demopolis?
March, with 5.75 in of precipitation in a normal year; the driest is October with 3.25 in.
What plant hardiness zone is Demopolis in?
The USDA's 2023 map puts Demopolis in zone 8b in ZIP code 36732. By the same method at Demopolis's NOAA station, the coldest night of a typical year reaches 17°F (16 years, 1991-2020): zone 8b.
How late can frost come in Demopolis?
In half of years the last 32°F night comes after March 16; in one year in ten it comes after April 3. Waiting until April 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alabama climateThe statewide normals and every place in the state
- Livingston, AL19 miles from this station, 64.0°F a year
- Greensboro, AL21 miles from this station, 64.1°F a year
- Gainesville, AL27 miles from this station, 63.9°F a year
- Marion, AL38 miles from this station, 64.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made