Cumming, Georgia climate: Normal weather by month, frost dates and records
Cumming's normal year runs from 31°F January nights to 89°F July afternoons, with 56.4 inches of precipitation and less than an inch of snow (0.6 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.6°C, January lows of 0°C, July highs of 32°C, 1,432 mm of precipitation a year.
- NOAA stationCumming (2 mi N)
- Station IDUSC00092408
- Location34.23°N 84.13°W
- Elevation1,140 ft (348 m)
- Population10,175
On October 23, the normal high in Cumming is 71°F and the normal low 46°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Cumming.
- Jan 51° 31°
- Feb 56° 33°
- Mar 63° 40°
- Apr 72° 46°
- May 79° 56°
- Jun 85° 64°
- Jul 89° 67°
- Aug 88° 67°
- Sep 82° 60°
- Oct 73° 49°
- Nov 63° 39°
- Dec 54° 34°
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 Cumming each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 31°F. The most precipitation falls in January (5.39 in), the least in October (3.97 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 51°F | 31°F | 41.2°F | 5.39 | 11 | <1 | 19 | 10 h 10 min |
| February | 56°F | 33°F | 44.6°F | 5.15 | 11 | <1 | 14 | 11 h |
| March | 63°F | 40°F | 51.4°F | 5.16 | 11 | <1 | 9 | 11 h 50 min |
| April | 72°F | 46°F | 59.2°F | 4.32 | 9 | <1 | 1 | 13 h |
| May | 79°F | 56°F | 67.4°F | 4.23 | 11 | 1 | <1 | 14 h |
| June | 85°F | 64°F | 74.6°F | 4.69 | 11 | 5 | <1 | 14 h 30 min |
| July | 89°F | 67°F | 78.1°F | 4.89 | 12 | 12 | <1 | 14 h 10 min |
| August | 88°F | 67°F | 77.5°F | 4.92 | 10 | 11 | <1 | 13 h 30 min |
| September | 82°F | 60°F | 71.2°F | 4.03 | 8 | 4 | <1 | 12 h 30 min |
| October | 73°F | 49°F | 61.0°F | 3.97 | 8 | <1 | 1 | 11 h 20 min |
| November | 63°F | 39°F | 50.9°F | 4.42 | 9 | <1 | 8 | 10 h 20 min |
| December | 54°F | 34°F | 44.1°F | 5.20 | 11 | <1 | 15 | 9 h 50 min |
| Year (annual) | 71°F | 49°F | 60.1°F | 56.37 | 120 | 32 | 67 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 11°C | 0°C | 5.1°C | 137 mm |
| February | 13°C | 1°C | 7.0°C | 131 mm |
| March | 17°C | 4°C | 10.8°C | 131 mm |
| April | 22°C | 8°C | 15.1°C | 110 mm |
| May | 26°C | 13°C | 19.7°C | 107 mm |
| June | 30°C | 18°C | 23.7°C | 119 mm |
| July | 32°C | 20°C | 25.6°C | 124 mm |
| August | 31°C | 19°C | 25.3°C | 125 mm |
| September | 28°C | 16°C | 21.8°C | 102 mm |
| October | 23°C | 9°C | 16.1°C | 101 mm |
| November | 17°C | 4°C | 10.5°C | 112 mm |
| December | 12°C | 1°C | 6.7°C | 132 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00092408; 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 Cumming?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, October has the fewest days with rain (8).
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 USC00092408.
When is the last frost in Cumming?
In Cumming, the last spring frost (32°F) comes after April 4 in half of years and after April 19 in one year in ten; the first autumn frost comes before November 4 in half of years and before October 23 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
- April 41 year in 10 after April 19; 9 in 10 after March 16
- First autumn frost, half of years before
- November 41 year in 10 before October 23; 9 in 10 before November 23
NOAA puts the median frost-free season at 214 days, and the season without a hard freeze (28°F) at 243 days.
A hard freeze (28°F) comes after March 20 in half of springs and before November 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Cumming in zone 8a in ZIP code 30041, the nearest ZIP area.
Frost dates for every NOAA station in Georgia · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00092408; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Cumming?
In a normal year in Cumming, 32 days a year reach 90°F, 67 nights fall to 32°F or colder and 120 days bring measurable precipitation.
- Days at 90°F or more
- 32a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 67a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 120a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00092408.
How sunny is Cumming?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Cumming, 4.4 kWh per square metre a day. August is the sunniest month (80%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.6 |
| February | 66% | 3.1 |
| March | 70% | 4.2 |
| April | 76% | 5.5 |
| May | 77% | 6.0 |
| June | 79% | 6.3 |
| July | 78% | 6.0 |
| August | 80% | 5.6 |
| September | 79% | 4.8 |
| October | 78% | 3.9 |
| November | 76% | 3.0 |
| December | 67% | 2.2 |
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 Cumming need?
A normal year in Cumming brings 3,241 heating degree days, 40% fewer than the median U.S. place (5,373), and 1,480 cooling degree days, 63% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,626 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 739 | 0 |
| February | 572 | 0 |
| March | 425 | 4 |
| April | 200 | 26 |
| May | 51 | 125 |
| June | 2 | 290 |
| July | 0 | 406 |
| August | 0 | 386 |
| September | 15 | 200 |
| October | 163 | 41 |
| November | 426 | 3 |
| December | 648 | 0 |
| Year (annual) | 3,241 | 1,480 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00092408. 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 Cumming been warmer than normal lately?
2023 averaged 61.3°F, 1.2°F above the 1991-2020 normal of 60.1°F. 2 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 60.4°F | +0.3°F | 57.88 |
| 2023 | 61.3°F | +1.2°F | 56.93 |
Source: observed years: ACIS, station USC00092408. A year counts only with all twelve months complete.
How does Cumming's climate compare?
Cumming is warmer than 12 of the other 100 places with their own NOAA record in Georgia, and wetter than 70. Across the 7,247 U.S. stations with normals, its annual mean of 60.1°F is warmer than 75%.
In the Köppen classification computed from these normals, Cumming 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 Cumming share this climate record?
6 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.
- Milton, GA41,490 people · 12 mi SW
- Sugar Hill, GA28,598 people · 11 mi SE
- Suwanee, GA23,062 people · 13 mi S
- Buford, GA18,642 people · 11 mi SE
- Dawsonville, GA4,875 people · 14 mi N
- Rest Haven, GA43 people · 11 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 Cumming's climate
What is the coldest month in Cumming?
January, with a normal high of 51°F and a normal low of 31°F. The warmest is July (89°F by day, 67°F at night).
Does it snow in Cumming?
Rarely: NOAA's normal is 0.6 inch a year.
What is the rainiest month in Cumming?
January, with 5.39 in of precipitation in a normal year; the driest is October with 3.97 in.
What plant hardiness zone is Cumming in?
The USDA's 2023 map puts Cumming in zone 8a in ZIP code 30041, the nearest ZIP area.
How late can frost come in Cumming?
In half of years the last 32°F night comes after April 4; in one year in ten it comes after April 19. Waiting until April 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Cumming in OctoberThis month day by day, its records and recent years
- Georgia climateThe statewide normals and every place in the state
- Gainesville, GA17 miles from this station, 61.2°F a year
- Jasper, GA25 miles from this station, 58.3°F a year
- Chamblee, GA26 miles from this station, 61.5°F a year
- Winder, GA31 miles from this station, 61.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made