Photo: Eric Polk(Epolk) · Public domainWet weather: 54 inches of rain and melted snow a year in Lebanon, more than in 92% of U.S. towns
July afternoons average 89°. Rain is spread evenly through the year: the wettest month, April, gets little more than the driest, October. Summer afternoons here are warmer than in 73% of U.S. towns. Picnics, hikes and garden evenings suit April, May, September and October, with highs of 71–83°.
A year in Lebanon at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lebanon’s climate
Compared with towns across the U.S., with Lebanon’s place in Tennessee beside it.
What a year in Lebanon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 206 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by October 28. Frost and day counts come from NOAA’s station at Lebanon, TN, 2.6 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Lebanon’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 7°. 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 54 inches a year; April 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 Lebanon
69% 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 Lebanon, TN.
Living with Lebanon’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
206 frost-free days in zone 7b. The last frost comes by Apr 6 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 28.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 2.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lebanon from natural hazards, river flooding is the largest share (45%); heat waves, cold waves, winter storms and ice storms together are 18%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lebanon and its neighbors
Every town next door is within a degree of Lebanon in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lebanon’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 |
|---|---|---|---|---|
| Lebanon, TN | 29° | 89° | 54" | 4.6" |
| Morganton, NC | 29° | 89° | 50" | 4.5" |
| Kennesaw, GA | 32° | 89° | 53" | 3.8" |
| Lyman, SC | 32° | 89° | 52" | 3.9" |
| Suffolk, VA | 30° | 89° | 50" | 4.1" |
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 Lebanon averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.8°).
A smaller shift than in 94% 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 Lebanon compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lebanon’s place among Tennessee’s.
Lebanon weather by month
Highs, lows and precipitation from NOAA’s grid at Lebanon’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° | 4.4" | 1.9" | 12 | 1 | 31° – 46° |
| February | 52° | 32° | 4.8" | 1.6" | 11 | 1 | 32° – 50° |
| March | 61° | 38° | 5.0" | 0.5" | 13 | 0 | 43° – 60° |
| April | 71° | 46° | 5.1" | 0.0" | 12 | 0 | 53° – 63° |
| May | 79° | 56° | 5.1" | 0.0" | 12 | 0 | 62° – 73° |
| June | 86° | 64° | 4.5" | 0.0" | 11 | 0 | 71° – 80° |
| July | 89° | 68° | 4.8" | 0.0" | 11 | 0 | 75° – 82° |
| August | 89° | 66° | 4.0" | 0.0" | 10 | 0 | 73° – 85° |
| September | 83° | 59° | 3.8" | 0.0" | 8 | 0 | 67° – 77° |
| October | 72° | 48° | 3.6" | 0.0" | 9 | 0 | 56° – 65° |
| November | 60° | 37° | 3.8" | 0.1" | 10 | 0 | 43° – 54° |
| December | 51° | 32° | 5.1" | 0.5" | 12 | 0 | 31° – 52° |
| Year | 70° | 48° | 53.8" | 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 31° to 52°. July is the most reliable, staying within 7°.
Where Lebanon’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 Lebanon’s center.
- Snow: Old Hickory Wfo, TN.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lebanon, TN, 2.6 miles from the city’s center point, 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 Lebanon’s climate
What is the weather like in Lebanon?
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 73% of U.S. towns.
How cold does it get in Lebanon in winter?
January nights average 29°. About 91 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.
How much snow does Lebanon 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 Lebanon?
July, with a typical high of 89° and a low of 68°. About 56 days a year reach 90° and 2 reach 100° (Lebanon, TN).
When is the first and last frost in Lebanon?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by October 28, about 206 frost-free days, at Lebanon, TN.
What growing zone is Lebanon in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 7°.
What is the best time of year to visit Lebanon?
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 Lebanon getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 94% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lebanon.
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.