Alma, Georgia climate: Normal weather by month, frost dates and records
Alma's normal year runs from 39°F January nights to 93°F July afternoons, with 44.8 inches of precipitation and less than an inch of snow (0.1 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.7°C, January lows of 4°C, July highs of 34°C, 1,138 mm of precipitation a year.
- NOAA stationAlma Bacon County Airport
- Station IDUSW00013870
- Location31.54°N 82.51°W
- Elevation193 ft (59 m)
- Population3,362
On October 14, the normal high in Alma is 81°F and the normal low 58°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Alma.
- Jan 63° 39°
- Feb 67° 42°
- Mar 73° 48°
- Apr 80° 53°
- May 87° 62°
- Jun 91° 69°
- Jul 93° 72°
- Aug 92° 72°
- Sep 88° 67°
- Oct 80° 57°
- Nov 72° 47°
- Dec 65° 42°
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 Alma each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 39°F. The most precipitation falls in August (5.37 in), the least in November (2.21 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 63°F | 39°F | 51.0°F | 3.72 | 9 | <1 | 9 | 10 h 20 min |
| February | 67°F | 42°F | 54.4°F | 3.37 | 8 | <1 | 4 | 11 h |
| March | 73°F | 48°F | 60.2°F | 4.17 | 8 | <1 | 2 | 12 h |
| April | 80°F | 53°F | 66.5°F | 2.85 | 7 | 1 | <1 | 13 h |
| May | 87°F | 62°F | 74.2°F | 2.78 | 7 | 9 | <1 | 13 h 40 min |
| June | 91°F | 69°F | 80.0°F | 5.34 | 12 | 19 | <1 | 14 h 10 min |
| July | 93°F | 72°F | 82.4°F | 5.23 | 12 | 26 | <1 | 14 h |
| August | 92°F | 72°F | 81.7°F | 5.37 | 12 | 23 | <1 | 13 h 20 min |
| September | 88°F | 67°F | 77.5°F | 3.80 | 9 | 13 | <1 | 12 h 20 min |
| October | 80°F | 57°F | 68.7°F | 2.93 | 6 | 1 | <1 | 11 h 30 min |
| November | 72°F | 47°F | 59.0°F | 2.21 | 6 | <1 | 2 | 10 h 30 min |
| December | 65°F | 42°F | 53.2°F | 3.03 | 8 | <1 | 7 | 10 h 10 min |
| Year (annual) | 79°F | 56°F | 67.4°F | 44.80 | 103 | 92 | 23 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 4°C | 10.6°C | 94 mm |
| February | 19°C | 6°C | 12.4°C | 86 mm |
| March | 23°C | 9°C | 15.7°C | 106 mm |
| April | 27°C | 12°C | 19.2°C | 72 mm |
| May | 30°C | 17°C | 23.4°C | 71 mm |
| June | 33°C | 21°C | 26.7°C | 136 mm |
| July | 34°C | 22°C | 28.0°C | 133 mm |
| August | 33°C | 22°C | 27.6°C | 136 mm |
| September | 31°C | 19°C | 25.3°C | 97 mm |
| October | 27°C | 14°C | 20.4°C | 74 mm |
| November | 22°C | 8°C | 15.0°C | 56 mm |
| December | 18°C | 5°C | 11.8°C | 77 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013870; 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 Alma?
Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, November has the fewest days with rain (6).
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 USW00013870.
When is the last frost in Alma?
In Alma, the last spring frost (32°F) comes after March 11 in half of years and after March 30 in one year in ten; the first autumn frost comes before November 20 in half of years and before November 5 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 111 year in 10 after March 30; 9 in 10 after February 17
- First autumn frost, half of years before
- November 201 year in 10 before November 5; 9 in 10 before December 12
NOAA puts the median frost-free season at 256 days, and the season without a hard freeze (28°F) at 292 days.
A hard freeze (28°F) comes after February 21 in half of springs and before December 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Alma in zone 9a in ZIP code 31510, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Alma's NOAA station is in zone 9a: the coldest night of a typical year reaches 21°F (30 complete years).
Frost dates for every NOAA station in Georgia · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00013870; 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 Alma?
In a normal year in Alma, 92 days a year reach 90°F (2 of them 100°F or more), 23 nights fall to 32°F or colder and 103 days bring measurable precipitation.
- Days at 90°F or more
- 92a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 23a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 103a normal year
The highest temperature in this station's record (since 1938) is 105°F, on June 23, 2022; the lowest is −1°F, on January 21, 1985.
The wettest calendar year on that record is 1947, with 64.56 in; the snowiest season is 2024–25, with 5.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00013870; records: ACIS (NOAA Regional Climate Centers), station USW00013870. Records use complete months only; a month missing more than three days is left out.
How sunny is Alma?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Alma, 4.7 kWh per square metre a day. May is the sunniest month (83%) and February the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 3.0 |
| February | 73% | 3.6 |
| March | 77% | 4.8 |
| April | 80% | 5.8 |
| May | 83% | 6.4 |
| June | 80% | 6.2 |
| July | 82% | 6.2 |
| August | 79% | 5.5 |
| September | 79% | 4.9 |
| October | 80% | 4.2 |
| November | 80% | 3.4 |
| December | 74% | 2.7 |
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 Alma need?
A normal year in Alma brings 1,645 heating degree days, 69% fewer than the median U.S. place (5,373), and 2,542 cooling degree days, 2.8 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,629 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 442 | 7 |
| February | 310 | 13 |
| March | 189 | 38 |
| April | 61 | 106 |
| May | 6 | 290 |
| June | 0 | 450 |
| July | 0 | 539 |
| August | 0 | 519 |
| September | 1 | 376 |
| October | 46 | 159 |
| November | 214 | 34 |
| December | 377 | 12 |
| Year (annual) | 1,645 | 2,542 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013870. 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.
Has Alma been warmer than normal lately?
2025 averaged 67.2°F, 0.3°F below the 1991-2020 normal of 67.4°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.9°F | −0.5°F | 55.45 |
| 2022 | 68.0°F | +0.6°F | 36.86 |
| 2023 | 69.3°F | +1.9°F | 62.69 |
| 2024 | 68.7°F | +1.3°F | 55.91 |
| 2025 | 67.2°F | −0.3°F | 34.48 |
Over 86 complete years from 1939 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00013870; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Alma's climate compare?
Alma is warmer than 95 of the other 100 places with their own NOAA record in Georgia, and wetter than 2. Across the 7,247 U.S. stations with normals, its annual mean of 67.4°F is warmer than 93%.
In the Köppen classification computed from these normals, Alma 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 Alma share this climate record?
2 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.
- Nicholls, GA2,909 people · 8 mi W
- Rockingham, GA135 people · 5 mi E
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 Alma's climate
What is the coldest month in Alma?
January, with a normal high of 63°F and a normal low of 39°F. The warmest is July (93°F by day, 72°F at night).
Does it snow in Alma?
Rarely: NOAA's normal is 0.1 inch a year.
What is the rainiest month in Alma?
August, with 5.37 in of precipitation in a normal year; the driest is November with 2.21 in.
What plant hardiness zone is Alma in?
The USDA's 2023 map puts Alma in zone 9a in ZIP code 31510, the nearest ZIP area. By the same method at Alma's NOAA station, the coldest night of a typical year reaches 21°F (30 years, 1991-2020): zone 9a.
How late can frost come in Alma?
In half of years the last 32°F night comes after March 11; in one year in ten it comes after March 30. Waiting until March 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Georgia climateThe statewide normals and every place in the state
- Douglas, GA19 miles from this station, 66.4°F a year
- Surrency, GA22 miles from this station, 66.5°F a year
- Baxley, GA22 miles from this station, 66.2°F a year
- Waycross, GA23 miles from this station, 67.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made