John Cloyd House (Additional Documentation) · Photo: rossograph · CC BY-SA 4.0Precipitation in Green Hill tops that of 91% of U.S. towns: 53 inches a year
July afternoons average 89°. Summer afternoons here are warmer than in 74% of U.S. towns. The latest 30-year average runs 0.8° warmer than 1901–2000’s, with February up the most. Radiators earn their keep from November to February, the months that average under 50°.
A year in Green Hill at a glance
Each month’s typical high and low, and what it brings.
What stands out about Green Hill’s climate
Compared with towns across the U.S., with Green Hill’s place in Tennessee beside it.
What a year in Green Hill feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 216 frost-free days a year
In half of years the last 32° night comes by April 1 and the first by November 4. Frost and day counts come from NOAA’s station at Old Hickory Wfo, TN, 1.0 miles from the town’s center, at about the same height.
The 2023 USDA map puts Green Hill’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 8°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 5 inches of snow a winter
Snow, measured at Old Hickory Wfo, TN, falls mostly in January. Precipitation (rain plus melted snow) adds up to 53 inches a year; May is the wettest month and October the driest. Rain or snow falls on about 132 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Green Hill
71% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Old Hickory Wfo, TN.
Living with Green Hill’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
216 frost-free days in zone 7b. The last frost comes by Apr 1 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 4.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Green Hill from natural hazards, river flooding is the largest share (42%); heat waves, cold waves, winter storms and ice storms together are 21%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Green Hill and its neighbors
Every town next door is within a degree of Green Hill in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Green Hill’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Green Hill, TN | 29° | 89° | 53" | 4.6" |
| Suffolk, VA | 30° | 89° | 50" | 4.1" |
| Morganton, NC | 29° | 89° | 50" | 4.5" |
| Lyman, SC | 32° | 89° | 52" | 3.9" |
| Jonesboro, AR | 30° | 90° | 51" | 3.9" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Green Hill averaged 0.8° warmer than the 1900s. The biggest change is in February (+1.9°).
A smaller shift than in 88% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Green Hill compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Green Hill’s place among Tennessee’s.
Green Hill weather by month
Highs, lows and precipitation from NOAA’s grid at Green Hill’s center; snow, wet days and snow on the ground from Old Hickory Wfo, TN. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 48° | 29° | 4.2" | 1.9" | 12 | 1 | 31° – 46° |
| February | 52° | 32° | 4.7" | 1.6" | 11 | 1 | 32° – 50° |
| March | 61° | 39° | 4.9" | 0.5" | 13 | 0 | 43° – 61° |
| April | 71° | 47° | 5.0" | 0.0" | 12 | 0 | 53° – 64° |
| May | 79° | 56° | 5.0" | 0.0" | 12 | 0 | 62° – 74° |
| June | 86° | 65° | 4.4" | 0.0" | 11 | 0 | 71° – 80° |
| July | 89° | 69° | 4.7" | 0.0" | 11 | 0 | 75° – 82° |
| August | 89° | 67° | 4.0" | 0.0" | 10 | 0 | 73° – 85° |
| September | 83° | 60° | 3.9" | 0.0" | 8 | 0 | 67° – 78° |
| October | 72° | 48° | 3.6" | 0.0" | 9 | 0 | 56° – 66° |
| November | 60° | 38° | 3.8" | 0.1" | 10 | 0 | 43° – 54° |
| December | 51° | 32° | 4.8" | 0.5" | 12 | 0 | 30° – 53° |
| Year | 70° | 48° | 53.0" | 4.6" | 132 | 3 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 30° to 53°. July is the most reliable, staying within 7°.
Where Green Hill’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Green Hill’s center.
- Snow: Old Hickory Wfo, TN (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Old Hickory Wfo, TN, 1.0 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Green Hill’s climate
What is the weather like in Green Hill?
A typical July afternoon reaches 89°, a January night drops to 29°, and about 5 inches of snow falls in a normal winter. Milder January nights than 71% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Green Hill in winter?
January nights average 29°. About 69 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.
How much snow does Green Hill get?
About 4.6 inches in a normal winter at Old Hickory Wfo, TN, most of it in January, with snow on the ground about 3 days a year.
How hot does it get in Green Hill?
July, with a typical high of 89° and a low of 69°. About 42 days a year reach 90° (Old Hickory Wfo, TN).
When is the first and last frost in Green Hill?
In half of years the last spring frost (32°) comes by April 1 and the first fall frost by November 4, about 216 frost-free days, at Old Hickory Wfo, TN.
What growing zone is Green Hill in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 8°.
What is the best time of year to visit Green Hill?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Green Hill getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Green Hill.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.