Brentwood climate — normals and trends
Brentwood (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.1 °C and it receives 1,247 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (26.0 °C on average) and the coldest is January (3.2 °C). Rainfall peaks in March.
Brentwood averages 60 frost days, 70 hot days (≥ 30 °C) and 126 rainy days per year.
Brentwood has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 68 to 52 per year over the period.
The hottest day of the period reached 41.5 °C (on 29 June 2012) and the coldest -25.1 °C (on 24 January 1963).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BrentwoodTennessee
- coords
- 36.03°, -86.78°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.1°C
Average daily high
20.4°C
Average daily low
10.3°C
Annual rainfall
1,247mm
Sunshine / day
8.9h
Mean relative humidity
71%
Average peak wind
14.4km/h
Seasonal range
22.8°C
Frost days (< 0 °C)
60 d/yr
Hot days (≥ 30 °C)
70 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
19.2 cm
Average feels-like high
20.2 °C
Average feels-like low
9.0 °C
Average peak gust
33.8 km/h
Tropical nights (≥ 20 °C)
73 d/yr
Solar radiation
15.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.36 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.5 °C
29 June 2012
Coldest day
-25.1 °C
24 January 1963
Wettest day
121 mm
13 September 1979
Windiest day
43.6 km/h
10 March 1952
Strongest gust
114.5 km/h
10 March 1952
Hottest feels-like
44.7 °C
29 June 2012
Coldest feels-like
-30.3 °C
24 January 1963
Snowiest day
23.5 cm
22 March 1968
Sunniest day
14.1 h
14 June 2019
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 6.6 °C | -1.1 °C | 96 mm | -15 mm |
| Feb | 12.4 °C | +2.1 °C | 140 mm | +23 mm |
| Mar | 19.4 °C | +4.2 °C | 151 mm | +19 mm |
| Apr | 23.1 °C | +2.4 °C | 151 mm | +33 mm |
| May | 23.8 °C | -1.5 °C | 208 mm | +96 mm |
| Jun | 29.9 °C | +0.2 °C | 181 mm | +91 mm |
| Jul | 32.4 °C | +1.2 °C | 97 mm | -6 mm |
| Aug | 30.9 °C | +0.1 °C | 41 mm | -44 mm |
| Sep | 29.5 °C | +1.9 °C | 118 mm | +32 mm |
| Oct | 22.6 °C | +0.7 °C | 93 mm | +16 mm |
| Nov | 16.8 °C | +1.9 °C | 79 mm | -22 mm |
| Dec | 11.1 °C | +1.3 °C | 69 mm | -47 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Brentwood?
Brentwood has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.1 °C and it receives 1,247 mm of precipitation per year.
What is the hottest day ever recorded in Brentwood?
The hottest day measured in Brentwood between 1940 and 2025 was 29 June 2012, reaching 41.5 °C.
What is the coldest day in Brentwood?
The coldest day measured in Brentwood between 1940 and 2025 was 24 January 1963, at -25.1 °C.
Does it snow in Brentwood?
Yes. Brentwood gets on average 19.2 cm of snow per year and has around 60 frost days.
Has the climate of Brentwood warmed?
Yes: Brentwood warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Brentwood?
The wettest day measured in Brentwood between 1940 and 2025 was 13 September 1979, with 121 mm of rain in 24 hours.
What was the windiest day in Brentwood?
The windiest day measured in Brentwood between 1940 and 2025 was 10 March 1952, with winds reaching 43.6 km/h.
What is the warmest month in Brentwood?
The warmest month in Brentwood is July (26.0 °C on average); the coldest is January (3.2 °C).
How much does it rain in Brentwood?
Brentwood receives on average 1,247 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Brentwood?
Brentwood gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Brentwood?
The heaviest 24-hour snowfall measured in Brentwood between 1940 and 2025 was 22 March 1968, with 23.5 cm.
Are there tropical nights in Brentwood?
Yes: Brentwood has on average 73 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Brentwood?
In Brentwood, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 29 June 2012, and the lowest was -30.3 °C on 24 January 1963.
Compare Brentwood with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Brentwood