Monticello, Georgia climate: Normal weather by month, frost dates and records
Monticello's normal year runs from 29°F January nights to 92°F July afternoons, with 46.7 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 16.7°C, January lows of −1°C, July highs of 34°C, 1,186 mm of precipitation a year.
- NOAA stationMonticello
- Station IDUSC00095988
- Location33.33°N 83.70°W
- Elevation518 ft (158 m)
- From the center3 miles
- Population2,969
On October 23, the normal high in Monticello is 75°F and the normal low 45°F, and the chance of measurable rain or snow is 17%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Monticello.
- Jan 57° 29°
- Feb 61° 32°
- Mar 69° 38°
- Apr 77° 45°
- May 84° 55°
- Jun 89° 64°
- Jul 92° 68°
- Aug 91° 67°
- Sep 86° 60°
- Oct 78° 48°
- Nov 68° 37°
- Dec 60° 32°
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 Monticello each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 29°F. The most precipitation falls in March (4.82 in), the least in May (2.60 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 57°F | 29°F | 43.3°F | 4.44 | 8 | <1 | 18 | 10 h 10 min |
| February | 61°F | 32°F | 46.7°F | 4.33 | 7 | <1 | 14 | 11 h |
| March | 69°F | 38°F | 53.6°F | 4.82 | 7 | <1 | 9 | 12 h |
| April | 77°F | 45°F | 61.1°F | 3.56 | 6 | <1 | 1 | 13 h |
| May | 84°F | 55°F | 69.1°F | 2.60 | 6 | 4 | <1 | 13 h 50 min |
| June | 89°F | 64°F | 76.6°F | 3.79 | 8 | 13 | <1 | 14 h 20 min |
| July | 92°F | 68°F | 80.1°F | 4.56 | 8 | 20 | <1 | 14 h 10 min |
| August | 91°F | 67°F | 78.9°F | 3.92 | 8 | 17 | <1 | 13 h 30 min |
| September | 86°F | 60°F | 73.1°F | 3.87 | 6 | 8 | <1 | 12 h 30 min |
| October | 78°F | 48°F | 63.0°F | 2.94 | 5 | 1 | 1 | 11 h 20 min |
| November | 68°F | 37°F | 52.6°F | 3.50 | 6 | <1 | 11 | 10 h 30 min |
| December | 60°F | 32°F | 45.9°F | 4.37 | 7 | <1 | 17 | 10 h |
| Year (annual) | 76°F | 48°F | 62.0°F | 46.70 | 82 | 63 | 71 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | −1°C | 6.3°C | 113 mm |
| February | 16°C | 0°C | 8.2°C | 110 mm |
| March | 21°C | 3°C | 12.0°C | 122 mm |
| April | 25°C | 7°C | 16.2°C | 90 mm |
| May | 29°C | 13°C | 20.6°C | 66 mm |
| June | 32°C | 18°C | 24.8°C | 96 mm |
| July | 34°C | 20°C | 26.7°C | 116 mm |
| August | 33°C | 19°C | 26.1°C | 100 mm |
| September | 30°C | 16°C | 22.8°C | 98 mm |
| October | 25°C | 9°C | 17.2°C | 75 mm |
| November | 20°C | 3°C | 11.4°C | 89 mm |
| December | 16°C | 0°C | 7.7°C | 111 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00095988; 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 Monticello?
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 USC00095988.
When is the last frost in Monticello?
In Monticello, the last spring frost (32°F) comes after April 4 in half of years and after April 20 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 20 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 20; 9 in 10 after March 18
- First autumn frost, half of years before
- November 11 year in 10 before October 20; 9 in 10 before November 16
NOAA puts the median frost-free season at 211 days, and the season without a hard freeze (28°F) at 234 days.
A hard freeze (28°F) comes after March 24 in half of springs and before November 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Monticello in zone 8b in ZIP code 31064, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Monticello's NOAA station is in zone 8a: the coldest night of a typical year reaches 14°F (18 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Georgia · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00095988; 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 Monticello?
In a normal year in Monticello, 63 days a year reach 90°F (1 of them 100°F or more), 71 nights fall to 32°F or colder and 82 days bring measurable precipitation.
- Days at 90°F or more
- 63a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 71a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 82a normal year
The highest temperature in this station's record (since 1891) is 109°F, on July 12, 1930; the lowest is 0°F, on January 24, 1963.
The wettest calendar year on that record is 1964, with 64.75 in; the snowiest season is 1982–83, with 5.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00095988; records: ACIS (NOAA Regional Climate Centers), station USC00095988. Records use complete months only; a month missing more than three days is left out.
How sunny is Monticello?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Monticello, 4.6 kWh per square metre a day. July is the sunniest month (81%) and February the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.8 |
| February | 71% | 3.4 |
| March | 74% | 4.5 |
| April | 79% | 5.6 |
| May | 80% | 6.2 |
| June | 81% | 6.3 |
| July | 81% | 6.1 |
| August | 80% | 5.5 |
| September | 79% | 4.8 |
| October | 80% | 4.0 |
| November | 79% | 3.1 |
| December | 72% | 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 Monticello need?
A normal year in Monticello brings 2,838 heating degree days, 47% fewer than the median U.S. place (5,373), and 1,779 cooling degree days, 96% 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 5,118 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 671 | 0 |
| February | 514 | 1 |
| March | 361 | 8 |
| April | 156 | 38 |
| May | 33 | 162 |
| June | 1 | 347 |
| July | 0 | 470 |
| August | 0 | 432 |
| September | 9 | 253 |
| October | 123 | 61 |
| November | 378 | 6 |
| December | 591 | 1 |
| Year (annual) | 2,838 | 1,779 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00095988. 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 Monticello been warmer than normal lately?
2023 averaged 63.3°F, 1.3°F above the 1991-2020 normal of 62.0°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 63.3°F | +1.3°F | 47.92 |
Over 59 complete years from 1903 to 2023, the station's annual mean temperature rose at a fitted 1.4°F per century (+0.08°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00095988; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Monticello's climate compare?
Monticello is warmer than 35 of the other 100 places with their own NOAA record in Georgia, and wetter than 8. Across the 7,247 U.S. stations with normals, its annual mean of 62.0°F is warmer than 80%.
In the Köppen classification computed from these normals, Monticello 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 Monticello share this climate record?
5 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.
- Eatonton, GA6,641 people · 18 mi E
- Flovilla, GA700 people · 13 mi SW
- Shady Dale, GA296 people · 8 mi NE
- Godfrey, GA169 people · 14 mi NE
- Juliette, GA103 people · 16 mi SW
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 Monticello's climate
What is the coldest month in Monticello?
January, with a normal high of 57°F and a normal low of 29°F. The warmest is July (92°F by day, 68°F at night).
Does it snow in Monticello?
Rarely: NOAA's normal is 0.6 inch a year.
What is the rainiest month in Monticello?
March, with 4.82 in of precipitation in a normal year; the driest is May with 2.60 in.
What plant hardiness zone is Monticello in?
The USDA's 2023 map puts Monticello in zone 8b in ZIP code 31064, the nearest ZIP area. By the same method at Monticello's NOAA station, the coldest night of a typical year reaches 14°F (18 years, 1991-2020): zone 8a.
How late can frost come in Monticello?
In half of years the last 32°F night comes after April 4; in one year in ten it comes after April 20. Waiting until April 20 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Georgia climateThe statewide normals and every place in the state
- Covington, GA20 miles from this station, 62.1°F a year
- McDonough, GA22 miles from this station, 62.0°F a year
- Milledgeville, GA31 miles from this station, 63.9°F a year
- Experiment, GA34 miles from this station, 62.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made