Greeneville, Tennessee climate: Normal weather by month, frost dates and records
Greeneville's normal year runs from 26°F January nights to 87°F July afternoons, with 46.4 inches of precipitation and 8 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.7°C, January lows of −4°C, July highs of 31°C, 1,178 mm of precipitation a year.
- NOAA stationGreeneville Experiment Station
- Station IDUSC00403679
- Location36.11°N 82.84°W
- Elevation1,320 ft (402 m)
- Population15,979
On October 14, the normal high in Greeneville is 73°F and the normal low 44°F, and the chance of measurable rain or snow is 30%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Greeneville.
- Jan 48° 26°
- Feb 52° 28°
- Mar 60° 34°
- Apr 70° 42°
- May 78° 52°
- Jun 84° 61°
- Jul 87° 65°
- Aug 87° 63°
- Sep 82° 56°
- Oct 72° 44°
- Nov 60° 33°
- Dec 51° 29°
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 Greeneville each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 26°F. The most precipitation falls in July (4.96 in), the least in October (2.70 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. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 48°F | 26°F | 36.6°F | 3.52 | 2.2 | 12 | <1 | 24 | 10 h |
| February | 52°F | 28°F | 40.0°F | 3.80 | 2.9 | 12 | <1 | 21 | 10 h 50 min |
| March | 60°F | 34°F | 47.1°F | 3.96 | 1.4 | 13 | <1 | 16 | 11 h 50 min |
| April | 70°F | 42°F | 55.9°F | 4.36 | 0.0 | 12 | <1 | 7 | 13 h |
| May | 78°F | 52°F | 64.8°F | 4.34 | 0.0 | 13 | <1 | 1 | 14 h |
| June | 84°F | 61°F | 72.5°F | 4.26 | 0.0 | 12 | 6 | <1 | 14 h 40 min |
| July | 87°F | 65°F | 76.1°F | 4.96 | 0.0 | 13 | 11 | <1 | 14 h 20 min |
| August | 87°F | 63°F | 74.9°F | 4.44 | 0.0 | 11 | 10 | <1 | 13 h 30 min |
| September | 82°F | 56°F | 69.1°F | 3.04 | 0.0 | 9 | 5 | <1 | 12 h 30 min |
| October | 72°F | 44°F | 57.7°F | 2.70 | 0.0 | 9 | <1 | 5 | 11 h 20 min |
| November | 60°F | 33°F | 46.6°F | 2.95 | 0.2 | 10 | <1 | 18 | 10 h 20 min |
| December | 51°F | 29°F | 39.7°F | 4.06 | 1.0 | 13 | <1 | 22 | 9 h 40 min |
| Year (annual) | 69°F | 44°F | 56.7°F | 46.39 | 7.7 | 140 | 32 | 113 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 9°C | −4°C | 2.6°C | 89 mm | 6 cm |
| February | 11°C | −2°C | 4.4°C | 97 mm | 7 cm |
| March | 16°C | 1°C | 8.4°C | 101 mm | 4 cm |
| April | 21°C | 6°C | 13.3°C | 111 mm | 0 cm |
| May | 25°C | 11°C | 18.2°C | 110 mm | 0 cm |
| June | 29°C | 16°C | 22.5°C | 108 mm | 0 cm |
| July | 31°C | 18°C | 24.5°C | 126 mm | 0 cm |
| August | 30°C | 17°C | 23.8°C | 113 mm | 0 cm |
| September | 28°C | 13°C | 20.6°C | 77 mm | 0 cm |
| October | 22°C | 6°C | 14.3°C | 69 mm | 0 cm |
| November | 16°C | 1°C | 8.1°C | 75 mm | 1 cm |
| December | 10°C | −2°C | 4.3°C | 103 mm | 3 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00403679; 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 Greeneville?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, October has the fewest days with rain (9).
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 USC00403679.
When is the last frost in Greeneville?
In Greeneville, the last spring frost (32°F) comes after April 20 in half of years and after May 8 in one year in ten; the first autumn frost comes before October 22 in half of years and before October 8 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 201 year in 10 after May 8; 9 in 10 after April 4
- First autumn frost, half of years before
- October 221 year in 10 before October 8; 9 in 10 before November 3
NOAA puts the median frost-free season at 185 days, and the season without a hard freeze (28°F) at 207 days.
A hard freeze (28°F) comes after April 6 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Greeneville in zone 7a in ZIP code 37616, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Greeneville's NOAA station is in zone 7a: the coldest night of a typical year reaches 2°F (28 complete years).
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00403679; 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 Greeneville?
In a normal year in Greeneville, 32 days a year reach 90°F, 113 nights fall to 32°F or colder and 140 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
- 113a normal year
- Days that stay below freezing
- 6high of 32°F or less
- Days with 0.01 inch of precipitation
- 140a normal year
- Days with 1 inch of snow or more
- 3a normal year
The highest temperature in this station's record (since 1890) is 104°F, on July 2, 2012; the lowest is −29°F, on January 22, 1985.
The wettest calendar year on that record is 2020, with 60.48 in; the snowiest season is 1986–87, with 29.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00403679; records: ACIS (NOAA Regional Climate Centers), station USC00403679. Records use complete months only; a month missing more than three days is left out.
How sunny is Greeneville?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Greeneville, 4.2 kWh per square metre a day. August is the sunniest month (78%) and February the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 2.2 |
| February | 62% | 2.8 |
| March | 68% | 4.0 |
| April | 73% | 5.2 |
| May | 73% | 5.8 |
| June | 76% | 6.2 |
| July | 75% | 5.9 |
| August | 78% | 5.5 |
| September | 77% | 4.7 |
| October | 75% | 3.6 |
| November | 74% | 2.7 |
| December | 65% | 2.0 |
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 Greeneville need?
A normal year in Greeneville brings 4,165 heating degree days, 22% fewer than the median U.S. place (5,373), and 1,182 cooling degree days, 30% 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 3,996 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 882 | 0 |
| February | 700 | 0 |
| March | 558 | 2 |
| April | 290 | 17 |
| May | 97 | 90 |
| June | 9 | 232 |
| July | 0 | 344 |
| August | 1 | 308 |
| September | 35 | 159 |
| October | 254 | 27 |
| November | 555 | 2 |
| December | 785 | 0 |
| Year (annual) | 4,165 | 1,182 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00403679. 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 Greeneville been warmer than normal lately?
2025 averaged 56.9°F, 0.2°F above the 1991-2020 normal of 56.7°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 56.7°F | at normal | 49.00 | 6.7 |
| 2022 | 56.6°F | −0.1°F | 41.74 | 12.5 |
| 2023 | 57.4°F | +0.7°F | 51.39 | 0.0 |
| 2024 | 58.2°F | +1.5°F | 52.16 | 1.0 |
| 2025 | 56.9°F | +0.2°F | 48.14 | 7.0 |
Over 78 complete years from 1934 to 2024, the station's annual mean temperature rose at a fitted 2.1°F per century (+0.12°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00403679; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Greeneville's climate compare?
Greeneville is warmer than 19 of the other 115 places with their own NOAA record in Tennessee, and wetter than 2. Across the 7,247 U.S. stations with normals, its annual mean of 56.7°F is warmer than 66%.
In the Köppen classification computed from these normals, Greeneville 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 Greeneville 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.
- Tusculum, TN3,394 people · 7 mi NE
- Mosheim, TN2,560 people · 9 mi NW
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 Greeneville's climate
What is the coldest month in Greeneville?
January, with a normal high of 48°F and a normal low of 26°F. The warmest is July (87°F by day, 65°F at night).
Does it snow in Greeneville?
Yes: 8 inches in a normal year, falling on 6 days with 0.1 inch or more, the most in February (2.9 inches).
What is the rainiest month in Greeneville?
July, with 4.96 in of precipitation in a normal year; the driest is October with 2.70 in.
What plant hardiness zone is Greeneville in?
The USDA's 2023 map puts Greeneville in zone 7a in ZIP code 37616, the nearest ZIP area. By the same method at Greeneville's NOAA station, the coldest night of a typical year reaches 2°F (28 years, 1991-2020): zone 7a.
How late can frost come in Greeneville?
In half of years the last 32°F night comes after April 20; in one year in ten it comes after May 8. Waiting until May 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Greeneville in OctoberThis month day by day, its records and recent years
- Tennessee climateThe statewide normals and every place in the state
- Hot Springs, NC14 miles from this station, 58.0°F a year
- Newport, TN22 miles from this station, 58.7°F a year
- Rogersville, TN23 miles from this station, 56.3°F a year
- Marshall, NC23 miles from this station, 54.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made