Brentwood, Tennessee climate: Normal weather by month, frost dates and records
Brentwood's normal year runs from 26°F January nights to 90°F July afternoons, with 54.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.4°C, January lows of −3°C, July highs of 32°C, 1,380 mm of precipitation a year.
- NOAA stationBrentwood
- Station IDUSC00401039
- Location35.99°N 86.78°W
- Elevation707 ft (216 m)
- From the centerunder 1 mile
- Population45,525
On October 8, the normal high in Brentwood is 76°F and the normal low 49°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Brentwood.
- Jan 48° 26°
- Feb 53° 28°
- Mar 61° 35°
- Apr 71° 44°
- May 79° 53°
- Jun 87° 63°
- Jul 90° 66°
- Aug 89° 64°
- Sep 84° 57°
- Oct 73° 45°
- Nov 61° 34°
- 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 Brentwood each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 26°F. The most precipitation falls in May (5.68 in), the least in October (3.50 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 48°F | 26°F | 37.1°F | 4.65 | – | <1 | 24 | 10 h |
| February | 53°F | 28°F | 40.5°F | 4.74 | – | <1 | 21 | 10 h 50 min |
| March | 61°F | 35°F | 48.0°F | 5.46 | – | <1 | 13 | 11 h 50 min |
| April | 71°F | 44°F | 57.4°F | 4.92 | – | <1 | 4 | 13 h |
| May | 79°F | 53°F | 65.9°F | 5.68 | – | 1 | <1 | 14 h |
| June | 87°F | 63°F | 74.6°F | 4.37 | – | 11 | <1 | 14 h 40 min |
| July | 90°F | 66°F | 77.9°F | 4.53 | – | 16 | <1 | 14 h 20 min |
| August | 89°F | 64°F | 76.5°F | 3.67 | – | 16 | <1 | 13 h 30 min |
| September | 84°F | 57°F | 70.2°F | 4.00 | – | 6 | <1 | 12 h 30 min |
| October | 73°F | 45°F | 59.2°F | 3.50 | – | <1 | 3 | 11 h 20 min |
| November | 61°F | 34°F | 47.4°F | 3.96 | – | <1 | 14 | 10 h 20 min |
| December | 51°F | 29°F | 40.2°F | 4.87 | – | <1 | 20 | 9 h 40 min |
| Year (annual) | 71°F | 45°F | 57.9°F | 54.35 | – | 51 | 98 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 9°C | −3°C | 2.8°C | 118 mm |
| February | 12°C | −2°C | 4.7°C | 120 mm |
| March | 16°C | 1°C | 8.9°C | 139 mm |
| April | 22°C | 7°C | 14.1°C | 125 mm |
| May | 26°C | 11°C | 18.8°C | 144 mm |
| June | 30°C | 17°C | 23.7°C | 111 mm |
| July | 32°C | 19°C | 25.5°C | 115 mm |
| August | 32°C | 18°C | 24.7°C | 93 mm |
| September | 29°C | 14°C | 21.2°C | 102 mm |
| October | 23°C | 7°C | 15.1°C | 89 mm |
| November | 16°C | 1°C | 8.6°C | 101 mm |
| December | 11°C | −2°C | 4.6°C | 124 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Franklin (6 miles away), gets 2 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00401039; 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 Brentwood?
Normal highs sit between 65°F and 85°F in April, May, September and October.
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 USC00401039.
When is the last frost in Brentwood?
In Brentwood, the last spring frost (32°F) comes after April 15 in half of years and after May 4 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 13 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 151 year in 10 after May 4; 9 in 10 after March 31
- First autumn frost, half of years before
- October 261 year in 10 before October 13; 9 in 10 before November 5
NOAA puts the median frost-free season at 193 days, and the season without a hard freeze (28°F) at 215 days.
A hard freeze (28°F) comes after April 2 in half of springs and before November 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Brentwood in zone 7b in ZIP code 37027.
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00401039; 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 Brentwood?
In a normal year in Brentwood, 51 days a year reach 90°F (2 of them 100°F or more) and 98 nights fall to 32°F or colder.
- Days at 90°F or more
- 51a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 98a normal year
- Days that stay below freezing
- 8high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00401039.
How sunny is Brentwood?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Brentwood, 4.3 kWh per square metre a day. June is the sunniest month (80%) and February the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 2.3 |
| February | 63% | 2.9 |
| March | 68% | 4.0 |
| April | 75% | 5.3 |
| May | 76% | 5.9 |
| June | 80% | 6.4 |
| July | 79% | 6.1 |
| August | 80% | 5.5 |
| September | 79% | 4.8 |
| October | 76% | 3.7 |
| November | 75% | 2.8 |
| 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 Brentwood need?
A normal year in Brentwood brings 3,983 heating degree days, 26% fewer than the median U.S. place (5,373), and 1,421 cooling degree days, 57% 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 4,336 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 866 | 0 |
| February | 687 | 1 |
| March | 532 | 5 |
| April | 260 | 30 |
| May | 83 | 110 |
| June | 4 | 292 |
| July | 0 | 398 |
| August | 2 | 358 |
| September | 30 | 187 |
| October | 219 | 38 |
| November | 530 | 2 |
| December | 771 | 0 |
| Year (annual) | 3,983 | 1,421 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00401039. 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.
How does Brentwood's climate compare?
Brentwood is warmer than 40 of the other 115 places with their own NOAA record in Tennessee, and wetter than 32. Across the 7,247 U.S. stations with normals, its annual mean of 57.9°F is warmer than 69%.
In the Köppen classification computed from these normals, Brentwood 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 Brentwood 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.
- Nolensville, TN15,809 people · 6 mi E
- Oak Hill, TN4,485 people · 5 mi N
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 Brentwood's climate
What is the coldest month in Brentwood?
January, with a normal high of 48°F and a normal low of 26°F. The warmest is July (90°F by day, 66°F at night).
Does it snow in Brentwood?
Yes. NOAA publishes no 1991-2020 snowfall normal for Brentwood's NOAA station; the nearest record that keeps one, Franklin (6 miles away), records 2 inches of snow in a normal year.
What is the rainiest month in Brentwood?
May, with 5.68 in of precipitation in a normal year; the driest is October with 3.50 in.
What plant hardiness zone is Brentwood in?
The USDA's 2023 map puts Brentwood in zone 7b in ZIP code 37027.
How late can frost come in Brentwood?
In half of years the last 32°F night comes after April 15; in one year in ten it comes after May 4. Waiting until May 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Tennessee climateThe statewide normals and every place in the state
- Franklin, TN6 miles from this station, 59.7°F a year
- Warner Park, TN9 miles from this station, 58.6°F a year
- Nashville, TN10 miles from this station, 60.8°F a year
- Shelby Bottoms Nature, TN12 miles from this station, 59.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made