Austin, TX Weather
Austin hourly forecast: next 24 hours
Today's high of 96°F (35°C) is about 6°F (3°C) above the typical September high of 90°F (32°C).
Current conditions in detail
Austin weather tomorrow (Friday, September 18)
Tomorrow in Austin looks overcast, with a high of 96° and an overnight low of 77°. Rain is unlikely (6% chance). Winds top out near 12 mph, and the UV index reaches 9 (very high).
Austin 14-day forecast
About the weather in Austin
Austin records 120 wet days and 9.0 hours of daily sunshine in an average year. Temperatures follow a humid subtropical pattern, running 61°F (16°C) in January up to 96°F (36°C) in August.
Austin weather: quick facts
- Hottest month: August - highs near 96°F (36°C)
- Coldest month: January - highs near 61°F (16°C)
- Decade extremes (2015-2024): 107°F (42°C) high · 4°F (-15°C) low
- Wettest month: May (16 rainy days) · Sunniest: July (12.1 h sun/day)
- Climate type: humid subtropical
- Annual swing: 20°C between the average warmest and coolest month · day to night: 10°C
- Months averaging 30°C or hotter: 4
- Average humidity: 68%
Temperatures through the year
At its warmest, in August, Austin runs to 96°F (36°C) in the afternoon and back to 78°F (25°C) by dawn. January sits at the other end of the year: 61°F (16°C) by day, 42°F (6°C) at night. Sunshine averages 9.0 hours a day over the year, peaking in July at 12.1 hours.
Rain, sun and snow
The wettest month is May (7.6 inches (194 mm) across 16 days) and the driest July. Average highs hold at or above 30°C for 4 months of the year, June through September being the unbroken run. Four of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is February through March. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 107°F (42°C) and the lowest daily minimum 4°F (-15°C).
Season by season
Spring (March through May)
Spring brings comfortable warmth here - highs near 79°F (26°C), nights near 60°F (16°C), and rain falls on around 38 of the 90 days.
Summer (June through August)
Summer in Austin brings serious heat, with daytime highs averaging 94°F (35°C) and nights around 76°F (24°C); expect showers on roughly 28 days across the season. Daylight is generous - around 11.6 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Fall brings hot afternoons here - highs near 81°F (27°C), nights near 63°F (17°C), and expect showers on roughly 27 days across the season.
Winter (December through February)
Through winter, Austin is crisp but comfortable: 63°F (17°C) by day, 45°F (7°C) after dark, and expect showers on roughly 26 days across the season.
Average temperatures in Austin by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 61° | 42° | 9 | 2.9 in | 7.3 h/day | 67% |
| February | 65° | 46° | 9 | 3.2 in | 6.9 h/day | 69% |
| March | 73° | 54° | 10 | 3.3 in | 7.7 h/day | 69% |
| April | 79° | 60° | 12 | 5.2 in | 8.7 h/day | 69% |
| May | 85° | 68° | 16 | 7.6 in | 9.3 h/day | 75% |
| June | 91° | 74° | 11 | 4.1 in | 11.3 h/day | 71% |
| July | 95° | 77° | 8 | 2.5 in | 12.1 h/day | 64% |
| August | 96° | 78° | 8 | 4.7 in | 11.5 h/day | 62% |
| September | 90° | 73° | 9 | 4.1 in | 10.2 h/day | 66% |
| October | 82° | 63° | 9 | 4.4 in | 9.0 h/day | 63% |
| November | 70° | 53° | 9 | 3.3 in | 7.1 h/day | 71% |
| December | 65° | 47° | 8 | 3.4 in | 6.6 h/day | 71% |