Austin climate — normals and trends
Austin (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.9 °C and it receives 839 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 August (29.0 °C on average) and the coldest is January (9.7 °C). Rainfall peaks in May.
Austin averages 13 frost days, 130 hot days (≥ 30 °C) and 96 rainy days per year.
Austin has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.5 °C (on 4 September 2000) and the coldest -17.7 °C (on 31 January 1949).
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
AustinTexas
- coords
- 30.27°, -97.74°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.9°C
Average daily high
25.6°C
Average daily low
14.9°C
Annual rainfall
839mm
Sunshine / day
9.4h
Mean relative humidity
67%
Average peak wind
18.6km/h
Seasonal range
19.3°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
130 d/yr
Rainy days (≥ 1 mm)
96 d/yr
Annual snowfall
1.4 cm
Average feels-like high
25.8 °C
Average feels-like low
14.4 °C
Average peak gust
37.5 km/h
Tropical nights (≥ 20 °C)
135 d/yr
Solar radiation
17.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
42.5 °C
4 September 2000
Coldest day
-17.7 °C
31 January 1949
Wettest day
169 mm
27 August 2017
Windiest day
62.5 km/h
11 September 1961
Strongest gust
116.3 km/h
11 September 1961
Hottest feels-like
45.5 °C
23 July 2018
Coldest feels-like
-22.2 °C
31 January 1949
Snowiest day
9.9 cm
30 January 1949
Sunniest day
13.2 h
3 July 2013
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 | 13.5 °C | -1.9 °C | 55 mm | +0 mm |
| Feb | 18.3 °C | +0.7 °C | 50 mm | -15 mm |
| Mar | 27.1 °C | +5.4 °C | 52 mm | -17 mm |
| Apr | 28.5 °C | +2.9 °C | 63 mm | -34 mm |
| May | 31.3 °C | +2.3 °C | 126 mm | +5 mm |
| Jun | 34.2 °C | +1.7 °C | 78 mm | +8 mm |
| Jul | 33.1 °C | -1.4 °C | 208 mm | +164 mm |
| Aug | 36.1 °C | +1.2 °C | 29 mm | -20 mm |
| Sep | 34.3 °C | +2.8 °C | 31 mm | -41 mm |
| Oct | 31.4 °C | +4.4 °C | 34 mm | -41 mm |
| Nov | 25.3 °C | +4.4 °C | 39 mm | -29 mm |
| Dec | 19.9 °C | +3.0 °C | 12 mm | -45 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 Austin?
Austin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 839 mm of precipitation per year.
What is the hottest day ever recorded in Austin?
The hottest day measured in Austin between 1940 and 2025 was 4 September 2000, reaching 42.5 °C.
What is the coldest day in Austin?
The coldest day measured in Austin between 1940 and 2025 was 31 January 1949, at -17.7 °C.
Does it snow in Austin?
Yes. Austin gets on average 1.4 cm of snow per year and has around 13 frost days.
Has the climate of Austin warmed?
Yes: Austin warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Austin?
The wettest day measured in Austin between 1940 and 2025 was 27 August 2017, with 169 mm of rain in 24 hours.
What was the windiest day in Austin?
The windiest day measured in Austin between 1940 and 2025 was 11 September 1961, with winds reaching 62.5 km/h.
What is the warmest month in Austin?
The warmest month in Austin is August (29.0 °C on average); the coldest is January (9.7 °C).
How much does it rain in Austin?
Austin receives on average 839 mm of precipitation per year, spread over about 96 rainy days.
Is it sunny in Austin?
Austin gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Austin?
The heaviest 24-hour snowfall measured in Austin between 1940 and 2025 was 30 January 1949, with 9.9 cm.
Are there tropical nights in Austin?
Yes: Austin has on average 135 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Austin?
In Austin, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 23 July 2018, and the lowest was -22.2 °C on 31 January 1949.
Compare Austin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Austin